Tag: caddisfly

Potamophylax kosovaensis, a new insect species from Kosovo that is already endangered

The country’s natural wealth is under threat by manmade pressures such as water pollution, littering, and the construction of hydropower plants.

Over the last few years, professor Halil Ibrahimi from Kosovo and his team have described several new species of aquatic insects revered as bioindicators of freshwater ecosystems. However, the celebration of these discoveries is tempered by alarming concerns: the newfound species are often already considered endangered, as per the criteria set forth by the International Union for Conservation of Nature (IUCN), as soon as they are described. This classification underscores the urgent need for conservation efforts to safeguard their existence.

The research team just discovered a new species, named Potamophylax kosovaensis, in the spring area of the Llap River, nestled within the Ibër River Basin. The region, known for its ecological significance, serves as a critical habitat for numerous aquatic organisms like newly discovered insect species.

Unfortunately, these freshwater insects are facing unprecedented threats in Kosovo and the broader Balkans region. Anthropogenic pressures, such as water pollution, littering, and the construction of hydropower plants, pose imminent risks to their survival. The degradation of their habitats not only jeopardizes their existence, but also undermines the health and integrity of entire freshwater ecosystems.

Spring area of the Llap river in Kosovo. — Spring area of the Llap river, from where the new species, *Potamophylax kosovaensis* was found.

Professor Ibrahimi emphasizes on the importance of urgent action to mitigate these threats and conserve this delicate balance of freshwater biodiversity. “The discovery of Potamophylax kosovaensis serves as a stark reminder of the fragility of our freshwater ecosystems,” he states. “We must prioritize efforts to protect these habitats and the invaluable species they harbor.”

A polluted waterway in Kosovo. — Anthropogenic pressures in freshwater ecosystems in Kosovo endangering rich aquatic biodiversity.

A polluted natural area in Kosovo. — Anthropogenic pressures in freshwater ecosystems in Kosovo endangering rich aquatic biodiversity.

The study was financed by the Integrated Water Resource Management in Kosovo (IWRM-K) and was conducted in the Laboratory of Zoology-Department of Biology of the University of Prishtina. It was published in the open-access, peer-reviewed Biodiversity Data Journal.

Research article:

Ibrahimi H, Bilalli A, Geci D, Grapci Kotori L (2024) Potamophylax kosovaensis sp. nov. (Trichoptera, Limnephilidae), a new species of the Potamophylax winneguthi species cluster from the Ibër River Basin in Kosovo. Biodiversity Data Journal 12: e121454. https://doi.org/10.3897/BDJ.12.e121454

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Two newly recorded species join Thailand’s aquatic insect fauna

In Thailand, more than 1,000 caddisfly species occur, and a recent study shows that their diversity in the country is even greater than previously suggested.

Caddisflies are an order of aquatic insects with high diversity. In Thailand, more than 1,000 caddisfly species are known to occur, and a recent study in the journal Check Listshows that their diversity in the country is even greater than previously suggested.

Scientists Rungnapa Somnark from Khon Kaen University and Narumon Sangpradub from the Center of Biodiversity Excellence, Chulalongkorn University recorded, for the first time, two caddisfly species that were previously not documented as part of Thailand’s fauna. They were able to catch the insects using black-light traps set up along water streams. The field study took place in the summer of 2017 at Thap Lan National Park, which is a part of Dong Phayayen–Khao Yai Forest Complex, a Natural World Heritage site in the north-eastern Thailand.

The two newly-recorded caddisfly species are Diplectrona erinya, a brown insect previously only known from Tam Dao in Vietnam, and Diplectrona extrema, yellowish-brown in colour and distributed in Borneo, Sumatra, and Java.

They both belong to the genus Diplectrona, which now has 10 documented representatives in Thailand.

The researchers suggest they are probably rare in the country.

“Our study suggests that two newly reported species occur at low densities, which highlights the continuing need for efforts to conserve the [Thap Lan National] park and to conduct more studies on the caddisfly fauna,” they say in conclusion.

Research article:

Somnark R, Sangpradub N (2023) New records of the caddisflies Diplectrona erinya Malicky, 2002 and Diplectrona extrema Banks, 1920 (Trichoptera, Hydropsychidae) from Thailand. Check List 19(1): 13-20. https://doi.org/10.15560/19.1.13

Homo sapiens or insapiens? A new insect species from Kosovo cries for help

A new insect species from Kosovo challenges the idea of the intelligence and cleverness of humankind, compared to other organisms, with its scientific name.

Type locality of the new species. Photo by Halil Ibrahimi

Lying at the center of the Balkan Peninsula, Kosovo harbors a diversity of ecosystems and conditions, which have favored processes leading to the existence of many endemic and rare species. In the past few years, several new species of aquatic insects have been discovered from the small Balkan country, making it unique in terms of biodiversity. Unfortunately, as elsewhere in the Balkans, many of these ecosystems have deteriorated heavily.

A team of scientists from Kosovo, led by Professor Halil Ibrahimi of the University of Prishtina, recently found a new species of aquatic insect, a caddisfly, from the Sharr Mountains in Kosovo, and named it Potamophylax humoinsapiens.

The species epithet humoinsapiens is a combination of two Latin words, “humo”, which in English means “to cover with soil, to bury,” and “insapiens,” meaning “unwise”. The researchers explain this name refers to the unwise and careless treatment of the habitats of the new species: hydropower plant, illegal logging and pollution have greatly degraded the area in the past years. “In some segments, whole parts of the Lepenc River are “buried” in large pipes,” they write in their study, which was published in the open-access Biodiversity Data Journal.

*Potamophylax humoinsapiens*. Photo by Halil Ibrahimi

“The species name ‘humoinsapiens’ ironically sounds like Homo insapiens, and this new species is right in calling us unwise,” thinks Prof. Ibrahimi. “With its actions, humankind has caused the extinction of many species of insects and other organisms during the past decades and has degraded greatly all known ecosystems in the planet. The debate on questioning wise nature of humans is already ongoing.

In the past few years, Professor Halil Ibrahimi and his team have found several new species of aquatic insects from the Balkans, Middle East and North Africa. In an attempt to raise awareness for this group of vulnerable creatures, endangered greatly by human activities, the team of scientists has given their species unique names. One of their previous discoveries was named Potamophylax coronavirus in order to raise the attention to the silent and dangerous “pandemic” humans have caused in freshwater ecosystems in the Balkans.

The research team behind the discovery. Photo by Halil Ibrahimi

“By combining classical taxonomy and modern molecular analysis techniques with the unique names, we are making insect species talk to our collective consciousness. It is in humankind’s capacity to earn the name Homo sapiens again,” the researchers conclude.

The study was financed by the Ministry of Education, Science, Technology and Information of the Republic of Kosovo and was conducted in the Laboratory of Zoology-Department of Biology of the University of Prishtina.

Original source:

Ibrahimi H, Bilalli A, Gashi A, Grapci Kotori L, Slavevska Stamenkovič V, Geci D (2023) Potamophylax humoinsapiens sp. n. (Trichoptera, Limnephilidae), a new species from the Sharr Mountains, Republic of Kosovo. Biodiversity Data Journal 11: e97969. https://doi.org/10.3897/BDJ.11.e97969

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Pandemic-inspired discoveries: New insect species from Kosovo named after the Coronavirus

While the new Coronavirus will, hopefully, be effectively controlled sooner rather than later, its latest namesake is here to stay – a small caddisfly endemic to a national park in Kosovo that is new to science.

The new species *Potamophylax coronavirus*

Potamophylax coronavirus was collected near a stream in the Bjeshkët e Nemuna National Park in Kosovo by a team of scientists, led by Professor Halil Ibrahimi of the University of Prishtina. After molecular and morphological analyses, it was described as a caddisfly species, new to science in the open-access, peer-reviewed Biodiversity Data Journal.

Male and female of the new species *Potamophylax coronavirus,* in copulation. Photo by Halil Ibrahimi

Ironically, the study of this new insect was impacted by the same pandemic that inspired its scientific name. Although it was collected a few years ago, the new species was only described during the global pandemic, caused by SARS-CoV-2. Its name, P. coronavirus, will be an eternal memory of this difficult period.

The locality where P. coronavirus was discovered. Photo by Halil Ibrahimi and Astrit Bilalli

In a broader sense, the authors also wish to bring attention to “another silent pandemic occurring on freshwater organisms in Kosovo’s rivers,” caused by the pollution and degradation of freshwater habitats, as well as the activity increasing in recent years of mismanaged hydropower plants. Particularly, the river basin of the Lumbardhi i Deçanit River, where the new species was discovered, has turned into a ‘battlefield’ for scientists and civil society on one side and the management of the hydropower plant operating on this river on the other.

The small insect order of Trichoptera, where P. coronavirus belongs, is very sensitive to water pollution and habitat deterioration. The authors of the new species argue that it is a small-scale endemic taxon, very sensitive to the ongoing activities in Lumbardhi i Deçanit river. Failure to understand this may drive this and many other species towards extinction.

Interestingly, in the same paper, the authors also identified a few other new species from isolated habitats in the Balkan Peninsula, which are awaiting description upon collection of further specimens. The Western Balkans and especially Kosovo, have proved to be an important hotspot of freshwater biodiversity. Several new insect species have been discovered there in the past few years, most of them being described by Professor Halil Ibrahimi and his team.

New caddisfly species discovered in the Balkan biodiversity hotspot of Kosovo

The Republic of Kosovo turns out to be a unique European biodiversity hotspot after a second new species of aquatic insect has been described from the Balkan country. The new caddisfly was discovered by Prof. Halil Ibrahimi from the University of Prishtina, Kosovo, and international research team. They have their finding published in the open-access journal ZooKeys.

The new caddisfly species was found during a field trip, undertaken by the scientists in Sharr National Park in Kosovo. The aquatic insect belongs to the highly diverse genusDrusus, which, unfortunately, is under threat of extinction because of the ongoing pollution activities and mismanagement of freshwater ecosystems.

Called Drusus sharrensis, the new caddisfly has been named after the mountains where it was found. Thus, it is yet another example for a species, either animal or plant, bearing the same combination of names, and highlighting this range of mountains as a highly rich in rare and endemic species.

“Even though just discovered, the species may be already threatened by illegal logging, water extraction from springs, expansion of touristic activities and several other anthropogenic factors,” points out the author, “such as limestone and rock quarries operating in the Sharr Mountains in the vicinity of aquatic ecosystems potentially causing severe siltation.”

“Additionally, recent development of a winter tourism facility at Brezovice, close to the type locality of the new species, may enhance local degradation of terrestrial and, particularly, aquatic ecosystems in the Sharr Mountains,” he further explains. “The Brezovica Touristic Centre Development Project was designed by the Government of the Republic of Kosovo with support from the European Union to promote the touristic appeal and thus, economic importance of the area. This project will impact a total area of roughly 3,700 ha.”

This is the second aquatic insect species discovered from Kosovo for the last twelve months and probably more are to be expected in this highly under-investigated area of the European continent.

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Original source:

Ibrahimi H, Vitecek S, Previši? A, Kučini? M, Waringer J, Graf W, Balint M, Keresztes L, Pauls SU (2016) Drusus sharrensis sp. n. (Trichoptera, Limnephilidae), a new species from Sharr National Park in Kosovo, with molecular and ecological notes. ZooKeys 559: 107-124. doi: 10.3897/zookeys.559.6350

How did the stonefly cross the lake? The mystery of stoneflies recolonising a US island

Massive glaciers once covered an island in one of the Great Lakes, USA, leaving it largely devoid of life. Its subsequent recolonisation by insects triggered the curiosity of entomologist R. Edward DeWalt and graduate student Eric J. South of the Illinois Natural History Survey and Department of Entomology. Not only did they prove there were significantly fewer species, compared to the mainland, but also that smaller stonefly species appeared to be more capable of recolonizing the island. This study was published in the open-access journal ZooKeys .

Isle Royale is a large island and national park in the middle of Lake Superior, isolated from the mainland by 22 — 70 km distance. As recently as 8,000 — 10,000 years ago, glaciers completely covered the island making it almost uninhabitable.

Over the last 10 millennia mammals as large as moose and wolves, swam, floated, flew, or walked on ice bridges to the island. Therefore, it seemed logical that it was the larger size that allowed some species to cross the water. However, as far as stoneflies are concerned, the results turned out quite different.

“We sampled stoneflies (Plecoptera), mayflies (Ephemeroptera), and caddisflies (Trichoptera), because they are important water quality indicators. Our laboratory has expertise in the taxonomy and ecology of these important species and we know that national parks potentially provide us with wilderness quality conditions,” says DeWalt.

Being much better fliers, the mayflies and caddisflies did not show a particular relation between a species’ body size and their ability to recolonise the island. Conversely, stoneflies on the island were considerably smaller than their mainland counterparts.

“Stoneflies are clumsy fliers, especially the larger species. Large ones are not very aerodynamic and because of this they don’t have the energy reserves to cover the distance to the island. Few species of stoneflies can actually live in the lake, so most could not swim to the island,” explains DeWalt. “Mayflies and caddisflies, on the other hand, are known to be better fliers and tolerant of lake conditions, which would allow for more of the mainland species and similarly sized species to reach Isle Royale.

“Smaller stoneflies have probably used updrafts from the mainland and prevailing winds to get to the island,” the scientist suggests. “The wind just held them up until they reached the island.”

Future research is to use molecular techniques to identify the possible mainland origin for several species inhabiting Isle Royale National Park.

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Original source:

DeWalt RE, South EJ (2015) Ephemeroptera, Plecoptera, and Trichoptera on Isle Royale National Park, USA, compared to mainland species pool and size distribution. ZooKeys 532: 137-158.doi: 10.3897/zookeys.532.6478