Tag: Brazil

The Shellowship of the Ring: two new snail species named after Tolkien characters

“You fool. No man can kill me,” said the Witch-king of Angmar.

“I am no man!” Éowyn replied, “I am a newly discovered freshwater snail species from Brazil!”

Okay, maybe that isn’t exactly how it goes – but it’s our way of letting you know that two newly discovered snail species have been named in honour of Éowyn and Meriadoc from The Lord of the Rings.

Described in the open-access journal Zoosystematics and Evolution, Idiopyrgus eowynae and Idiopyrgus meriadoci were named by fans of J.R.R. Tolkien’s iconic series (who happen to also be successful researchers).

Multiple scientific photographs of a snail shell with thorn-like protrusions. — *Idiopyrgus* *eowynae*.

Explaining the name Idiopyrgus eowynae, they said: “Éowyn exemplifies courage, resilience, and resistance against darkness, both internal and external, standing against Gríma Wormtongue and the Witch-king of Angmar.”

The discovered species are troglobitic and were found in a single limestone cave in the Serra do Ramalho karst area of Bahia state, northeastern Brazil. The gastropods belong to the family Tomichiidae, a group previously known for inhabiting surface freshwater environments but now shown to have adapted to subterranean ecosystems.

Both snails have unique periostracal hairs—thorn-like structures—on their shells, a feature uncommon among Brazilian freshwater snails. Their cave-specific adaptations include reduced pigmentation, fragile shells, and small size.

Photographs of a fprest area and a cave entrance. — The Gruna do Pedro Cassiano cave, area and entrance.

The Gruna do Pedro Cassiano cave, where the snails were discovered, is a fragile ecosystem threatened by water extraction, deforestation, and climate change. Due to the species’ limited habitat and environmental threats to their subterranean ecosystem, the authors recommend a ‘Vulnerable’ classification. The findings highlight the importance of protecting Brazil’s subterranean biodiversity and raise concerns about the impact of human activities on these delicate ecosystems.

These concerns played a part in the naming of Idiopyrgus meriadoci, as the researchers state: “Besides standing with Éowyn against the Witch-king in the Battle of the Pelennor Fields, Merry is also an example of the fight for nature conservation in Middle-earth, pushing the Ents into action and ultimately ending Saruman’s threat to Fangorn Forest.”

Multiple scientific photographs of a translucent snail shell. — *Idiopyrgus* *meriadoci*.

On his choice of Tolkien-inspired names for the new species, lead author Dr Rodrigo B. Salvador of the Finnish Museum of Natural History said: “I tend to use lots of pop culture references in my species names—from books, comics, Dungeons & Dragons, and video games. If we think about it, there is a long-standing tradition in taxonomy of using names from mythology and literature to name species.

“Granted, in the old days, those names mostly came from Greek and Roman myths and Shakespeare. Today, we have newer mythologies and literature classics, so in a way, we’re just continuing that tradition.”

Salvador was also resposible for naming a land snail after Shar of Dungeons and Dragons, and more recently Baldur’s Gate, fame. Read about it below!

Species new to science named after a ‘Dungeons & Dragons’ character

Original source

Salvador RB, Bichuette ME (2024) Idiopyrgus Pilsbry, 1911 (Gastropoda, Tomichiidae): a relict genus radiating into subterranean environments. Zoosystematics and Evolution 100(4): 1543-1556. https://doi.org/10.3897/zse.100.136428

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Eight years of ruin: the legacy of the Mariana dam disaster

Researchers explore the ongoing devastation caused by Brazil’s worst environmental disaster.

Eight years since the collapse of the Fundão tailings dam in Mariana, Brazil, researchers have highlighted ongoing environmental and social devastation caused by the disaster.

A paper published in our open-access journal Nature Conservation underscores the persistent and growing impacts of the collapse, which ranks as one of the world’s most significant environmental tragedies.

Several dead fish on a muddy river bank with a forest in the background. — Dead fish in Marliéria, Minas Gerais, Brazil, about 200 km downstream from the Fundão tailings dam. Photo credit: Elvira Nascimento.

Caused by the Samarco mining company, the 2015 collapse released approximately 50 million cubic meters of toxic mud, burying the village of Bento Rodrigues and severely contaminating over 600 kilometres of river channels and coastal habitats. More than 1 million people across 35 cities were affected, leading to 19 deaths, widespread health issues, and the displacement of hundreds of residents.

A village, destroyed by the Mariana dam disaster, covered in mud. — The village of Bento Rodrigues after the disaster. Photo credit: Rogério Alves/TV Senado.

According to researchers, the environmental damage has only intensified over the years. High levels of heavy metals continue to threaten human and wildlife health, with significant bioaccumulation observed in endangered species like the Franciscana dolphin. Additionally, the disaster caused the introduction of numerous invasive species, further destabilising the ecosystem.

The paper, led by Dr Cássio Cardoso Pereira and Fernando Goulart of Universidade Federal de Minas Gerais, criticises the slow and controversial response by the Reno v a Foundation, an entity created by the responsible companies to address the disaster’s aftermath. While some compensation and restoration efforts have been made, the researchers argue that these actions are insufficient and often inadequate.

A Brief History of: The Mariana Disaster by Plainly Difficult.

One of the most concerning findings, they say, is the ongoing risk posed by similar structures across Brazil, where hundreds of dams remain in poor condition. The study advocates for the replacement of these dangerous dams with safer alternatives like dry mining, which significantly reduces the risk of future collapses.

“Urgent, science-based public policies are needed that prioritise the restoration of the Rio Doce basin, in addition to comprehensive compensation for affected communities. To achieve this, we need collaborations involving local and government oversight and independent scientific expertise to prevent further ecological and human disasters.”
Dr Cássio Cardoso Pereira.

Has climate change hijacked the environmental agenda?

Read a guest blog post by Dr Cássio Cardoso Pereira exploring whether biodiversity loss is being overlooked because of climate change.

As the region continues to face the compounded effects of climate change, with increasing cyclones and heavy rains worsening the spread of pollutants, the paper reminds us that the legacy of the Fundão disaster is far from over.

Original source

Pereira CC, Fernandes S, Fernandes GW, Goulart FF (2024) Eight years after the Fundão tailings dam collapse: chaos on the muddy banks. Nature Conservation 56: 77-82. https://doi.org/10.3897/natureconservation.56.133441

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New special issue of Neotropical Biodiversity and Conservation pays homage to the Unisinos Postgraduate Program in Biology

The program, which birthed the NBC journal, was discontinued in 2022 for financial reasons.

Today, a special issue of Neotropical Biodiversity and Conservation has been released in tribute to the discontinued Postgraduate Program in Biology (PPG Biologia Unisinos) of the Universidade do Vale do Rio dos Sinos (Unisinos), Brazil.

Diversity and Wildlife Management: The legacy of PPG Biologia Unisinos was edited by former professors and students of PPG Biologia Unisinos, and features eight articles focused on the Neotropical region. Each study was conducted by the research teams of the program, or was only made possible with their help. It serves as a testament to the importance of the program.

On 21 July 2022, Unisinos, a private institution in southern Brazil, announced that it would discontinue 12 of its postgraduate programs, including PPG Biologia Unisinos. The program specialised in diversity and wildlife management and was the birthplace of the journal Neotropical Biology and Conservation in 2006.

Cover image for Diversity and Wildlife Management: The legacy of PPG Biologia Unisinos.

The closure of the programs was explained by Unisinos as a measure to maintain the university’s financial stability. However, this decision is widely seen as a significant setback for Brazilian research. It has disrupted the work of many professors and graduate students and is expected to have a noticeable negative impact on Brazilian research in the coming years.

“PPG Biologia Unisinos was a resilient postgraduate program with amazing professors that always did their best to keep the high quality of their research even when facing adversities such as budget cuts.

“We hope that this special issue helps raise awareness on the importance of biological research and encourages researchers from other institutions to defend their programs and advocate for more investment in biological research.”
Piter Boll, Neotropical Biology and Conservation’s editor-in-chief and former student of PPG Biologia Unisinos

Notable research featured in the issue includes a review of the management effectiveness of nature conservation units in southern Brazil, and a paper discussing the consequences of the program’s closure.

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Why we shouldn’t blame women for gender disparity in science: Perspectives of women in zoology

A Brazilian network of female zoologists aims to oppose gender disparity in science

Guest blog post by Veronica Slobodian

Scientists are part of a rather sexist society and, therefore, ruled by a rather sexist social conduct. Nevertheless, women scientists attempt to thrive despite all setbacks provided by structural sexism (both explicit and implicit).

Sadly, female scientists are more likely to suffer from harassment, be deprived from recognition for their work, and be more overburdened with household chores compared to their male counterparts. All these situations are being reinforced by social gender stereotypes.

As a result, many women leave academia because of these hindrances and prejudice in a phenomenon known as “leaking pipeline”. To properly address those setbacks, we must first recognize the structural inequalities in academia, and then provide strategies to recruit, retain and promote students and faculty from underrepresented groups.

In a rebuttal to an article published in Nature Communications (AlShebli et al. 2020, now retracted), which suggested that female protégés reap more benefits when mentored by men and, therefore, policies to promote female mentors need to be revisited, our group of female zoologists wrote the opinion paper “Why we shouldn’t blame women for gender disparity in academia: Perspectives of Women in Zoology“, now published in the open-access scientific journal Zoologia. Quickly supported by over 500 signatories from all around the world, the piece soon grew into the Women in Zoology network, which brings together zoologists from underrepresented people in the scientific field groups, especially women.

In this reply, we pointed to the methodological flaws and addressed the inherently problematic conclusions of AlShebli et al. (2020). We also demonstrated the gendered academic settings that systematically prejudices women and presented how some of the current diversity policies are positively changing the zoological field in Brazil. While writing our response, we realized these challenges and aches were in fact much more common in the field, so we decided to broaden the network to encompass all female zoologists who want a more fair and diverse Zoology. So, with the “Women in Zoology” network, our aim is to promote female zoologists, investigate their underrepresentation in Brazilian zoology, and propose policies to balance the situation.

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Original article:

Slobodian V, Soares KDA, Falaschi RL, Prado LR, Camelier P, Guedes TB, Leal LC, Hsiou AS, Del-Rio G, Costa ER, Pereira KRC, D’Angiolella AB, de A Sousa S, Diele-Viegas LM (2021) Why we shouldn’t blame women for gender disparity in academia: perspectives of women in zoology. Zoologia 38: 1-9. https://doi.org/10.3897/zoologia.38.e61968

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Find more information about the “Women in Zoology” network on Instagram: @mulheresnazoologia.

Second of its kind ‘sharpshooter’ leafhopper from Brazil ‘strikes’ with its colouration

When, in 2014, Brazilian researchers stumbled across a never-before-seen red-eyed leafhopper feeding inside the rosettes of bromeliads, growing in the restingas of southeastern Brazil, they were certain it was a one-of-a-kind discovery. Described as new-to-science species, as well as genus (Cavichiana bromelicola) and added to the sharpshooter tribe Cicadellini, it became the first known case of a leafhopper feeding on otherwise nutrition-poor bromeliads in their natural habitat.

Newly described sharpshooter species *Cavichiana alpina* (left) and the only other leafhopper (*Cavichiana bromelicola*, right) known to feed on bromeliads
Photo by Gabriel Mejdalani

Several years later, however, a team of entomologists from Universidade Federal do Rio de Janeiro carried out fieldwork in a mountainous area of southeastern Brazil and, as a result, another bromelicolous leafhopper species of the genus was discovered: Cavichiana alpina. Only, the new one appeared even more spectacular.

The new species, described and illustrated in the open-access journal Zoologia, is known from Itatiaia National Park (southeastern Brazil), where it can be found at altitudes above 1,800 m a.s.l. In fact, its characteristic mountainous habitat came to determine its species name (alpina). In contrast, its relative was originally described exclusively from sea level regions, even though the latest field trips have recorded it from a site located at 1,250 m a.s.l.

Slightly larger than the previously known C. bromelicola and similarly red-eyed, what most remarkably sets apart the newly-described species is its colouration. Rather than a single large yellow blotch contrasting against the dark-brown to black back of the insect, this sharpshooter sports a motley amalgam of red and blue covering most of its upper side.

In conclusion, the researchers explain that the peculiarity of the two known Cavichiana species is best attributed to a putative common ancestor that had likely once been widely distributed in southeastern and southern Brazil. Later, they speculate, a vicariant event, such as the uplift of the southeastern Brazilian mountain ranges during the latest Eocene and Oligocene, might have caused its diversification into two separate species.

Newly described sharpshooter species *Cavichiana alpina* (top) and the only other leafhopper (*Cavichiana bromelicola*, bottom) known to feed on bromeliads in their natural habitat
Photo by Gabriel Mejdalani

Original source:
Quintas V, Takiya DM, Côrte I, Mejdalani G (2020) A remarkable new species of Cavichiana (Hemiptera: Cicadellidae: Cicadellinae) from southeastern Brazil. Zoologia 37: 1-8. https://doi.org/10.3897/zoologia.37.e38783

Human impact on the activities and social behaviour of urban capuchin monkeys

To better understand how primates modify their behaviour to adapt to the increasing presence of humans, a research team monitored 17 robust capuchin monkeys for a year and a half.

Confined to a small green area, surrounded by houses and small corn and soy plantations in the municipality of Foz do Iguaçu (Brazil), the primates were frequented by both city government officers and casual visitors. It was found that the monkeys spent more time roaming around in search for food, but less in feeding, resting and socialising. This is considered to be the result of a diet comprising predominantly of human-provided food and restriction of dispersal due to a fragmented habitat.

The study, conducted by the Brazilian team of Janaína Back and Dr Lucas Aguiar, both affiliated with the Federal University for Latin American Integration and Adriane Suzin of the Federal University of Uberlândia, is published in the open-access journal Zoologia.

Adult female of *Sapajus sp*. finds oranges (*Citrus sp.*) provided by humans in a green urban area in Foz do Iguaçu, southern Brazil.

Capuchin monkeys are omnivorous primates with flexible social and feeding behaviour inhabiting Central and South America. Living in multi-male, multi-female groups of 3 to 30 individuals, they are heavily dependent on their social interactions, both agonistic and affiliative (grooming, social play, alloparental carrying etc.) However, they allocate their time according to many factors, including season, daytime, social status, sex and age. Their pronounced adaptability is also seen in their behavioural repertoire, which can rapidly increase in response to new stimuli in the environment.

In late 2011, the researchers began their study by spending three months familiarising the monkeys to the presence of human observers. Then, they conducted regular visits between January 2012 and June 2013, when they would monitor the population for a total of 10 hours a day. Thus, they obtained 15,208 behavioural records and noted 2,538 events of social interaction.

While the monkeys were seen to feed on the fruits of the native and exotic trees present in the habitat, as well as food provided by the city government officers and the passers-by, according to the data, their diet comprised 71% human-provided food, mostly given by casual visitors. The monkeys seemed to have accepted the scattered and unpredictable nature of their primary source, resulting in more time spent in searching for food (80%), when compared to populations in larger fragments and continuous forest. It could also be that the animals were spending extra time travelling to explore the many objects left behind by people.

Naturally, more time spent in searching for food results in less time left for social interactions. Additionally, roaming animals are staying apart from each other for longer periods of time.

On the other hand, the monkeys were reported to spend less time eating, which is considered to be a consequence of the human-provided food being much higher in energy content and availability, thus satisfying individual demands with less effort and smaller amounts.

To the surprise of the researchers, the capuchins were not found to spend more time resting, which is a commonly observed phenomenon in animals regularly fed by humans. The team attributes the deviation to pedestrians frequently disturbing the monkeys by using the forest patch as shortcuts.

As a result of food abundance, the monkeys were rarely seen to act in a hostile manner with each other. Alternatively, it could be that the population favours affiliative and cooperative social interactions since the fragmented habitat had led to well-pronounced kinship in the group.

“In conclusion, we found deviations in activity budget and social interactions of capuchins living in the studied small urban fragment, possibly influenced by the availability of anthropic food and the restrictions for dispersion imposed by the urban matrix,” say the scientists.

“These kind of studies are very important in Primate Conservation Biology, because we have an urgent demand to understand how primates adapt around human beings, as the contact between human and nonhuman primates are an inescapable aspect today.”

Adult female and juvenile of *Sapajus sp.* consuming watermelon (*Citrullus lanatus*) provided by humans in a green urban area in Foz do Iguaçu, southern Brazil.

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Original source:

Back JP, Suzin A, Aguiar LM (2019) Activity Budget and Social Behavior of Urban Capuchin Monkeys (Sapajus sp.) (Primates, Cebidae). Zoologia 36: 1-10. https://doi.org/10.3897/zoologia.36.e30845

Wildlife on the highway to hell: Roadkill in the largest wetland, Pantanal region, Brazil

*Adult individual of Erythrolamprus aesculapii captured in roadside habitats of BR-262. Photo by Michel Passos*

Scientists provide crucial data to prompt further conservation and safety measures at the notorious BR-262 highway

Having systematically monitored wild animals killed on the Brazilian federal highway BR-262, which passes through the Pantanal region, a research team from the Federal University of Mato Grosso do Sul, Brazil, published their data concerning birds and reptiles in the open access journal Check List.

Apart from information crucial for future conservation activities, the paper provides new and unexpected roadkill records, including the Black-and-white hawk-eagle.

Authored by Wagner Fischer and his colleagues Raquel Faria de Godoi and Antonio Conceição Paranhos Filho, the article is part of the first dataset of vertebrate mortality in the region. A separate paper of theirs is planned to present the data concerning mammals gathered during the same survey, which took place between 1996 and 2000.

*An adult individual of Xenodon matogrossensis captured in roadside habitats of BR-262. Photo by Cyntia Santos.*

Having mapped bird and reptile roadkill on the highway between the cities of Campo Grande and Corumbá in the Brazilian savannah, the team reports a total of 930 animals representing 29 reptile and 47 bird species. In addition, the data provide the first regional geographic record of the colubrid snake Hydrodynastes bicinctus.

The researchers conclude that the species richness observed in the road-killed animals clearly confirms earlier concerns about wildlife-vehicle collisions in the Pantanal region. Such accidents lead to long-term and chronic impact on both wildlife and road safety.

“Mitigation of wildlife-vehicle collisions on this road continues to claim urgency for biodiversity conservation and for human and animal safety and care,” say the authors.

“For managers, the main goal should be to determine target species of greatest concern, focusing on those vulnerable to local extinction or those which represent major risks of serious accidents.”

In the past, the team’s dataset had already been used as a guide to road fauna management. In particular, it was used by government road managers when planning animal overpassess and underpassess equipped with roadside fences as part of the long-term project Programa Estrada Viva: BR-262. So far, however, only some of the less efficient safety methods, such as road signs and lowered speed limits, have been applied at the most critical points.

Over the past several years, a few independent studies have been conducted to monitor roadkill in a similar manner. Two of them (2010 and 2017) looked into mammal-vehicle collisions, while the third recorded reptiles and birds as well. All of them serve to demonstrate that BR-262 continues to be a major cause for the regional wildlife mortality, which in turn increases the risks of serious accidents.

“BR-262 keeps its inglorious fame as a highway to hell for human and wild lives,” points out lead author Wagner Fischer.

*Roadkill on the BR-262 highway, Pantanal region, Brazil. Photos by Ricardo Fraga and Wagner Fischer.*

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Original source:

Fischer W, Godoi RF, Filho ACP (2018) Roadkill records of reptiles and birds in Cerrado and Pantanal landscapes. Check List 14(5): 845-876. https://doi.org/10.15560/14.5.845

How did the guppy cross the ocean: An unexpected fish appears on a volcanic archipelago

While people tend to describe tropical oceanic islands as ‘paradises on Earth’ and associate them with calm beaches, transparent warm waters and marvellous landscapes, archipelagos are often the product of a fierce natural force – volcanoes which erupt at the bottom of the sea.

Because of their origin, these islands have never been connected to the mainland, thereby it is extremely difficult for species to cross the ocean and populate them.

One such species – the South American guppy (Poecilia vivipara) – is a small freshwater fish which looks nowhere equipped to cross the distance between the mainland and the Fernando de Noronha oceanic archipelago in Northeast Brazil.

Nevertheless, the research team of PhD student Waldir M. Berbel-Filho and his professor Dr. Sergio Lima from Universidade Federal do Rio Grande do Norte recorded the species from a local mangrove on the island. The question that immediately sprang to the minds of the scientists was: ‘Where did the guppies come from and how did they get to Fernando de Noronha?’

To answer these questions, the scientists sequenced a gene of the guppies’ DNA to analyze potential signatures of the island colonization left in the fish DNA. As a result, they concluded that the isolated population was in fact closely related to the fish inhabiting the closest continental drainages.

However, this evidence was not enough to explain how the species turned up on the island in the first place. Was it natural colonization, or rather human introduction?

The most likely scenario, according to the team, leads back to about 60 years ago when the American military had their WWII bases positioned at both Fernando de Noronha and Natal – the closest continental city. Indeed, the soldiers suggested to bring guppies to the island in an attempt to control mosquito population (in this region, guppies are commonly placed in water reservoirs to eat mosquito larvae).

On the other hand, natural dispersion cannot be completely excluded. The biologists remind that, apart for their exuberant colours and shapes, the guppies are well known for their capacity to resist to a wide range of environmental conditions. It could be that a set of circumstances occurring together, such as a favourable sea current, physiological adaptation and a bit of luck, might have brought the guppies to the archipelago.

“Regardless of their means of transportation,” argue the authors, “this guppy population represents a valuable lesson on how small populations manage to colonize and thrive in isolated environments.”

“Despite being visited by thousands of people every year, some of the most intriguing secrets of tropical islands may still be hidden in the DNA of their inhabitants,” they conclude. “These ‘paradises on Earth’ are capable of simultaneously filling our hearts with beauty and our minds – with knowledge.”

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Original source:

Berbel-Filho WM, Barros-Neto LF, Dias RM, Mendes LF, Figueiredo CAA, Torres RA, Lima SMQ (2018) Poecilia vivipara Bloch & Schneider, 1801 (Cyprinodontiformes, Poeciliidae), a guppy in an oceanic archipelago: from where did it come? ZooKeys 746: 91-104. https://doi.org/10.3897/zookeys.746.20960

New ‘big-armed fly’ species named after former California governor Arnold Schwarzenegger

New species can be named for all types of attributes, but Natural History Museum of Los Angeles County entomologist Brian Brown knew exactly what name to give a bizarre new fly species he discovered in the Brazilian Amazon.

“As soon as I saw those bulging legs, I knew I had to name this one after Arnold,” says Brown. “Not only is he a major cultural icon and an important person in the political realm, his autobiography gave me some hope that I could improve my body as a skinny teenager.” For these reasons, Brown says, the former governor deserves to have the new fly named in his honor.

His research article is published in the open access Biodiversity Data Journal.

The fly is impressive in other ways, Brown explains. “It is known only from one female specimen that we almost overlooked because it is so incredibly small.”

In fact, it is the world’s smallest known fly, according to Brown, who should know, since he had previously described what was formerly the world’s smallest fly, at 0.400 mm in body length. The new fly, named Megapropodiphora arnoldi, is just a fraction smaller, coming in at 0.395 mm.

However, unlike the enlarged forelegs that prompted the naming, the mid- and hind legs appear to be highly reduced, and the wings reduced to tiny stubs.

Even though the fly has not been observed in the wild, Brown concludes that it is clearly a parasitoid, probably of ants or termites, based on its pointed, sharp ovipositor. He further speculates that these flies probably grab onto the hosts and “hold on for dear life” until they reach a nest or colony where they can parasitize their victims more effectively.

Brown has had considerable success finding new species of tiny flies, which he says are “the continuing frontier for insect discovery.”

Some of the more obvious, larger insects might have already been described, but by looking at smaller specimens, especially from remote, tropical sites, the entomologist finds that almost everything is new.

Even in his home city of Los Angeles, Brown and collaborators found that almost half of the phorid flies were previously unknown.

For example, it was last year that they finally figured why a secretive fly had been observed around mushrooms with no clear explanation for nearly 30 years. The revelation occurred when L.A. Bed & Breakfast owners Patsy Carter and Lisa Carter-Davis decided to alert entomologists about a phenomenon happening in their yard.

Back in 2016, Brian and his team described at once a total of twelve scuttle fly species new to science after ‘field’ trips in the backyards of houses around the city of angels.

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Original source:

Citation: Brown B (2018) A second contender for “world’s smallest fly” (Diptera: Phoridae). Biodiversity Data Journal 6: e22396. https://doi.org/10.3897/BDJ.6.e22396

An overlooked and rare new gall-inducing micromoth from Brazil

A new species and genus (Cecidonius pampeanus) of primitive monotrysian micromoth from the Brazilian Pampa biome has been recently discovered to induce scarcely noticeable galls under the swollen stems of the Uruguayan pepper tree.

Gall-inducing moths lay their eggs in the tree bark, where the larvae form the characteristic roundish swellings as they grow larger. In their turn, these galls attract various parasitoids and inquiline wasps – wasps that have lost the ability to form galls for their own eggs – and so they take advantage of the galls of other species, while under development. The inquilines modify the galls into larger ones which subsequently last longer and attract even more attention. As a result, even though abundant as young, the new moth’s larvae rarely survive and their density in the field later in life is low.

While free-living gall moths are generally rare, the studied genus pupates on the ground, resulting in its being overlooked for over a century. Furthermore, the galls fall to the ground where the last instar larvae undergo a period of suspended development for months. They stay motionless within their gall until pupation and emerge as adults in the next growing season.

After all this time, this species has finally been recognised in the open access journal ZooKeys by an international research team, led by Dr. Gilson Moreira, Universidade Federal do Rio Grande do Sul, Brazil. In their paper, the scientists describe the gall, immature stages and adults of the moth. They also provide information on its natural history in conjunction with one of the associated parasitoid and inquiline wasps.

“It took several years to obtain a small number of C. pampeanus pupae and adults to use for the description,” say the authors.

“The existence of these galls has been known for more than a century. However, biologists believed they are induced by the inquiline wasps,” they explain. “Consequently, it turned out that the wasps do not induce galls, but rather modify them early in development into large and colourful, visually appealing galls.”

The study also provides strong evidence that the species is under threat of extinction and the scientists suggest that protective measures need to be taken to conserve it.

In fact, they found strikingly low levels of gene flow amongst populations of C. pampeanus. In their paper, the team also emphasises that, in case of extinction of the primary gall inducer, a whole insect community associated with their galls will follow. This could happen even before science becomes familiar with all of these species.

Open savannahs of southern Brazil, where populations of the new moth’s host plant (the Uruguayan pepper tree) are found, have been suffering from anthropic impact for decades, mostly caused by agriculture and cattle ranching.

Curiously, the present study is the first in Brazil to suggest that a micromoth and its associated fauna should be subjected to conservation measures.

Extant populations of the new species are distant and isolated from each other, being restricted to a small geographic area in the northeast Southern Brazilian “Campos” (= Pampean savannah), a neglected biome from a nature preservation perspective. Most of the moths have retreated to higher elevations, such as hilltops and hill slopes interspersed with small bushes, where they get shelter from the anthropic influence.

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Original source:

Moreira GRP, Eltz RP, Pase RB, Silva GT, Bordignon SAL, Mey W, Gonçalves GL (2017) Cecidonius pampeanus, gen. et sp. n.: an overlooked and rare, new gall-inducing micromoth associated with Schinus in southern Brazil (Lepidoptera, Cecidosidae). ZooKeys 695: 37-74. https://doi.org/10.3897/zookeys.695.13320