Four new species of Nadzikambia in Mozambique

Four new species of Nadzikambia in Mozambique

by Alex Negro Neubeschreibungen Science

The South East Africa Montane Archipelago (SEAMA) stretches across northern Mozambique and into southern Malawi. It consists of a chain of around 30 so-called inselbergs, which are completely isolated from one another by valleys. They have long been recognised as biodiversity hotspots. For decades, ongoing unrest made it difficult to conduct herpetological surveys of the insular mountains. And when the opportunity finally arose again, new species of chameleon were promptly discovered – one on each of the insular mountains surveyed to date. The new species have since been studied genetically and morphologically. Four new species of Nadzikambia were described in the process.

Nadzikambia franklinae was named in honour of the British biochemist Rosalind Franklin. The species is found in the Mahno and Ukalini wet forests on Mount Namuli in Mozambique. It has so far been found at altitudes between 1,618 and 1,632 metres. The males have a taller and rounder casque with smoother crests than other Nadzikambia species. The species’ three remaining habitats are each only around 0.67 km² in size and are under massive pressure from land clearance for small-scale farming, such as maize and potato cultivation.

Nadzikambia goodallae was named after the recently deceased chimpanzee researcher Jane Goodall. The species inhabits the wet forest on the western slope of Mount Ribáuè in Mozambique.  It has so far been found at very specific altitudes between 1,052 and 1,142 metres. This species, too, is under severe threat from slash-and-burn farming and deforestation of its habitat. Only 4.8 km² of forest area currently remains. The males of Nadzikambia goodallae have a flat, broad casque with rough scales.

Nadzikambia evanescens was named after the Latin word for transience. This is intended to highlight the species’ critically endangered status. This chameleon species now survives in just a single fragment of wet forest on Mount Inago in Mozambique. Since 2009 alone, 85% of the forest area that existed at that time has been cleared. Currently, just 2.3 km² remains. The small habitat lies at an altitude of 1,235 to 1,281 m. The males of the species have a tall, round casque with smooth crest scales.

Nadzikambia nubila was named after the Latin word for clouds. Its habitat, Mount Chaperone, provides the rainfall essential for the region’s survival through its surrounding cloud formations. To date, only females of Nadzikambia nubila have been recorded; no males have yet been found. The chameleons inhabit wet forest at altitudes between 1,017 and 1,053 metres, although the existing forest area has more than halved since 2009, mainly due to slash-and-burn farming and illegal logging. Currently, only 7 km² remain. Furthermore, the highest elevations of Mount Chaperone, which are less threatened by human activity, appear to be changing from dense woodland to more exposed granite outcrops. The authors suspect that this may be due to climate change.

Unfortunately, the already known species Nadzikambia mlanjensis is just as threatened as the four new species. And this is despite the fact that it occurs at altitudes ranging from 600 to almost 2,000 metres, meaning it inhabits significantly more varied habitats. The forest area that once covered Mount Mlanje in Malawi decades ago now consists only of tiny, isolated forest fragments. In total, perhaps 12 km² remain; the rest has already been cleared. Nor is much left of Ruo Gorge Forest, the site where the species was first discovered. It is not yet clear whether Nadzikambia mlanjensis also occurs on nearby Mount Mchese.

The sixth and final species of the genus, Nadzikambia baylissi, appears to have fared slightly better. The species is found in wet forests at altitudes of between 1,000 and 1,400 metres on Mount Mabu in Mozambique. Here, the forest is still largely intact, even though the forest edges are struggling with slash-and-burn farming. However, it is not entirely clear whether the estimated 48 km² of habitat for this chameleon species is still accurate.

Sky islands of Mozambique harbour cryptic species of chameleons: Description of four new species of sylvan chameleons (Squamat: Chamaeleonidae: Nadzikambia Tilbury, Tolley & Branch, 2006)
Krystal A. Tolley, Werner Conradie
Vertebrate Zoology 76, 2026: 207-246
DOI: 10.3897/vz.76.e178403
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Photos: From top left to bottom right Nadzikambia franklinae, Nadzikambia goodallae, Nadzikambia avanescens and Nadzikambia nubila

The flap-necked chameleon in northern Mozambique

The flap-necked chameleon in northern Mozambique

by Alex Negro Verbreitung Science

Scientists recently searched for reptiles in the municipality of Mocuba in northern Mozambique to compile an inventory of the species found there. They examined a so-called miombo dry forest (a type of sparse forest savannah with hardly any undergrowth) and a nearby granite rock called Mount Morué, which is only 361 metres high.

Over several months during the rainy and dry seasons, both habitats were searched for seven days at a time (42 days in total). The scientists used pitfall traps and searched with the naked eye during the day along predetermined transects. Reptiles were identified using existing field guides and with the help of experts. In addition, some animals were killed and added to the Zambezi University collection.

A total of 23 different reptile species were observed. Chamaeleo dilepis was found six times. All chameleons were found in the Miombo woodland and not a single chameleon was found on the granite rock of Mount Morué. Two chameleons were hunting for prey, while two others were still in a sleeping position when found early in the morning. Another lappet chameleon had ended up in a pit trap. The species is already known from many finds in Mozambique. However, no finds had been made in Mocuba until now.

Beyond the asymptote: a near-complete reptile inventory in the Miombo woodland and on Mount Morué, Mocuba Municipality, with a major range extension for the lizard Nucras boulengeri Neumann, 1900
Avelino R. Miguel, Berta I. Sitole, Nando A.M. Calonga, Celso H. Duarte, Dolescêncio Armando, Célia J.A. Nanvonamuquitxo, Hinrich Kaiser
Herpetology Notes 18: 1051-1071.
DOI: not available
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Photo: Chamaeleo dilepis in the Miombo Woodlands, photographed by Miguel Avelino

New distribution data of Rieppeleon brachyurus in Mozambique

New distribution data of Rieppeleon brachyurus in Mozambique

by Alex Negro Beobachtungen Verbreitung Science

Rieppeleon brachyurus is a small stump-tailed chameleon species, first described at the end of the 19th century from the Shire Highlands south of Lake Malawi. The species has since been found in Malawi, Tanzania and Mozambique. In Mozambique, it was previously known from rainforests and gallery forests, known as miombo forests. Miombo forests are very open dry forests with sparse grass cover, giving them a savannah-like appearance (hence the term ‘forest savannah’). The Zambezi River, which runs across Mozambique, was previously considered the natural boundary for the occurrence of Rieppeleon brachyurus.

Herpetologists have now discovered that the species also occurs south of the river. They found two juvenile individuals and two adult females of the species in Coutada 11, a 5000 km² hunting concession in the heart of Mozambique. The animals were found there in a sand forest, a rare type of tropical forest on sand dunes, right next to a shallow wetland. These observations extend the previously known range of the species by about 250 km further south.

The authors also report two further new locations where Rieppeleon brachyurus has been found, in Taratibu and Montepuez Rubi Mining Concession, both of which are located north of the Zambezi River. In both observations, the ground chameleons were found in miombo forest at altitudes between 250 and 400 m.

Rieppeleon brachyurus (Günther, 1893) Beardless Pygmy Chameleon First records south of the Zambezi River
W. Conradie, D. Botma, C. Nanvonnamuquitxo
African Herp News 88, 2025: 28-33
DOI: not available
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Photo: Juvenile Rieppeleon brachyurus in Mozambique, photographed by Delport Botma, from the above-mentioned publication

The largest chameleon

The largest chameleon

by Alex Negro Internationaler Chamäleontag

The largest chameleon in the world – well, actually several species are fighting for the title. There are three contenders: the Meller’s chameleon (Trioceros melleri) from mainland Africa, the Parson’s Chameleon (Calumma parsonii parsonii) from Madagascar and the Madagascar giant chameleon (Furcifer oustaleti).

The Meller’s chameleon is found in the mountains of Tanzania, northern Mozambique and Malawi. The main distribution area is known to be Mount Zomba. The largest chameleon of this species measured to date is said to have measured 76 cm from the tip of its nose to the tip of its tail and weighed 600 g. The Parson’s chameleon, on the other hand, is found in various places on the central and southern east coast of Madagascar. Here, the largest chameleon measured so far is said to have been 72 cm long, but there are even measurements of over 700 g in weight. The Parson’s Chameleon is therefore definitely heavier, and the size of some animals comes close to that of the Meller’s chameleon. That leaves the Madagascar Giant Chameleon. It reaches almost 70 cm and, despite its sometimes impressive size, it almost always weighs less than 500 g. So despite its name, it will probably have to make do with third place.

#show your colours #internationalchameleonday #chameleonday #chameleondayMay9 #agchamaeleons

Pictures:
Trioceros melleri,  Creative Commons Attribution 4.0 International, photographed by John Lyakurwa
Calumma parsonii parsonii, Creative Commons Attribution-Share Alike 4.0 International, photographed by von Jialiang Gao
Furcifer oustaleti, Creative Commons Attribution-Share Alike 4.0 International, photographed by Sharp Photography