Tag: angola

Guest blog post by Javier Lobon-Rovira

After the long, hard days of fieldwork in the arid coastal region of southern Angola, Angolan researcher Pedro Vaz Pinto and his enthusiastic son Afonso, found the best spot to spend the night before heading back home. In the area of Carivo, every night was different: after four visits to this unique place, a different gecko species always showed up to add to the growing species list.

On a random night in August 2021, they went for a routine night walks and came across this unique gecko. In shock, Pedro immediately started sharing photos with the coauthors, Werner and Javier. “Guys, I think I found a new Kolekanos” he said.

Kolekanos is a unique and iconic gecko genus in Africa and more specifically only known from southwestern Angola. Kolekanos plumicaudus was described by one of the most recognized herpetologists in Africa, the late Wulf Haacke (1936– 2021).

Feather-tailed Kolekanos was at that point a monotypic genus (only one species in the genus), known only from ~200km south of the new discovery. Immediately, we all knew that what we were looking in that photo was something different from the known K. plumicaudus. “It is a Kolekanos… but, those are spines in the tail, not feathers…” was one of the most common reactions that night. So, we started planning our next trip to the area.

Three months later we were back at Carivo, now focusing on finding more specimens of that unique gecko. After only one hour, we spotted at least six specimens among the semi-dessert vegetations and rocks. At that moment, all doubt went away. The behavior and habitat of the new gecko was completely distinctive in comparison with K. plumicaudus.

Then, with our goal achieved and based on the big success of the first night, we planned to go back through different areas to explore some of the most remote regions in Northern Namibe and southern Benguela provinces. After two days driving on impossible roads, the team reached Ekongo. That night we were tired, so we decided to have a short walk around the camp. And… there it was…! Like a ghost, this small, cryptic, and elusive gecko started showing up in every big rock boulder.

This study, now published in the journal ZooKeys, also highlights how poorly explored and understood some regions of Angola remain, even as it has been considered as an important source of diversification and endemism in West Africa.

A new to science species of tarantula with a peculiar horn-like protuberance sticking out of its back was recently identified from Angola, a largely underexplored country located at the intersection of several Afrotropical ecoregions.

Collected as part of the National Geographic Okavango Wilderness Project, which aims to uncover the undersampled biodiversity in the entire Okavango catchment of Angola, Namibia and Botswana, thereby paving the way for sustainable conservation in the area, the new arachnid is described in a paper published in the open-access journal African Invertebrates by the team of Drs John Midgley and Ian Engelbrecht.

Although the new spider (Ceratogyrus attonitifer sp.n.) belongs to a group known as horned baboon spiders, the peculiar protuberance is not present in all of these species. Moreover, in the other species – where it is – the structure is completely sclerotised, whereas the Angolan specimens demonstrate a soft and characteristically longer ‘horn’. The function of the curious structure remains unknown.

The new tarantula’s extraordinary morphology has also prompted its species name: C. attonitifer, which is derived from the Latin root attonit– (“astonishment” or “fascination”), and the suffix –fer (“bearer of” or “carrier”). It refers to the astonishment of the authors upon the discovery of the remarkable species.

“No other spider in the world possesses a similar foveal protuberance,” comment the authors of the paper.

*Individual of the newly described species in defensive posture in its natural habitat. Photo by Kostadine Luchansky.*

During a series of surveys between 2015 and 2016, the researchers collected several female specimens from the miombo forests of central Angola. To find them, the team would normally spend the day locating burrows, often hidden among grass tufts, but sometimes found in open sand, and excavate specimens during the night. Interestingly, whenever the researchers placed an object in the burrow, the spiders were quick and eager to attack it.

The indigenous people in the region provided additional information about the biology and lifestyle of the baboon spider. While undescribed and unknown to the experts until very recently, the arachnid has long been going by the name “chandachuly” among the local tribes. Thanks to their reports, information about the animal’s behaviour could also be noted. The tarantula tends to prey on insects and the females can be seen enlarging already existing burrows rather than digging their own. Also, the venom of the newly described species is said to not be dangerous to humans, even though there have been some fatalities caused by infected bites gone untreated due to poor medical access.

In conclusion, the researchers note that the discovery of the novel baboon spider from Angola does not only extend substantially the known distributional range of the genus, but can also serve as further evidence of the hugely unreported endemic fauna of the country:

“The general paucity of biodiversity data for Angola is clearly illustrated by this example with theraphosid spiders, highlighting the importance of collecting specimens in biodiversity frontiers.”

Apart from the described species, the survey produced specimens of two other potentially new to science species and range expansions for other genera. However, the available material is so far insufficient to formally diagnose and describe them.

*The newly described baboon spider species (Ceratogyrus attonitifer), showing the peculiar soft and elongated horn-like protuberance sticking out of its back. Photo by Dr Ian Enelbrecht.*

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Original source:

Midgley JM, Engelbrecht I (2019) New collection records for Theraphosidae (Araneae, Mygalomorphae) in Angola, with the description of a remarkable new species of Ceratogyrus. African Invertebrates 60(1): 1-13. https://doi.org/10.3897/afrinvertebr.60.32141

Tag: angola

Leaves and Spines: A new spiny-tailed leaf-toed gecko from the unexplored coastal savanna of Angola

Guest blog post by Javier Lobon-Rovira

New tarantula species from Angola distinct with a one-of-a-kind ‘horn’ on its back

“No other spider in the world possesses a similar foveal protuberance,” comment the authors of the paper.

“The general paucity of biodiversity data for Angola is clearly illustrated by this example with theraphosid spiders, highlighting the importance of collecting specimens in biodiversity frontiers.”