Taxonomy of the Rhampholeon boulengeri Complex (Sauria: Chamaeleonidae): Five New Species from Central Africa's Albertine Rift.

In a recent molecular study, the pygmy chameleon Rhampholeon boulengeri Steindachner, 1911 was shown to contain six genetically distinct, but phenotypically cryptic lineages. Phylogenetic analyses of genetic data demonstrated that several well-supported clades occurred in non-overlapping elevational ranges across the Albertine Rift in Central Africa. In order to resolve the taxonomy of the R.

Out of southern Africa: Origins and cryptic speciation in Chamaeleo, the most widespread chameleon genus.

Molecular phylogenetics and the application of species delimitation methods have proven useful in addressing limitations associated with morphology based taxonomy and have highlighted the inconsistencies in the current taxonomy for many groups. For example, the genus Chamaeleo, which comprises 14 species with large distributions across mainland Africa and parts of Eurasia, exhibits relatively minor phenotypic differentiation between species, leading to speculation regarding the presence of cryptic diversity in the genus. Therefore, the aims of the present study were to construct a robust and comprehensive phylogeny of the genus and highlight potential species-level cryptic diversity.

Envenomation by the spotted harlequin snake, Homoroselaps lacteus (Linnaeus) 1754 (Serpentes: Atractaspidinae).

Two cases of envenomation from the small, semi-fossorial, front-fanged colubrid Homoroselaps lacteus are presented and the recent literature reviewed. In addition to local oedema and lymphadenopathy, the development of significant subcutaneous loco-regional bruising suggest that damage to capillary basement membrane and possibly other underlying anti-haemostatic effects may pertain to the clinical syndrome. Although local clinical effects may appear dramatic, due to the small volumes of venom that can be injected, it is considered that envenomation is unlikely to cause life-threatening effects.

A fatal bite from the burrowing asp Atractaspis corpulenta (Hallowell 1854).

Bites from the various species of Atractaspis are a common occurrence in Africa but deaths are very unusual. Of the 19 described species, the clinical effects of the bite of only seven have been described, and in only three (Atractaspis irregularis, Atractaspis microlepidota and Atractaspis engaddensis) have fatalities been documented. A case of envenomation is described following a bite to a finger by Atractaspis corpulenta, which resulted in sudden death approximately two and a half hours later.

Contributions to the herpetofauna of the Albertine Rift: Two new species of chameleon (Sauria: Chamaeleonidae) from an isolated montane forest, south eastern Democratic Republic of Congo.

Two new species of chameleons from the genera Rhampholeon and Kinyongia are described from an isolated montane forest remnant situated toward the southern end of the Albertine Rift bordering Lake Tanganyika. The closest known localities of species from these genera are 200km and 400km to the north respectively, separated by large intervening tracts of lowland savannah and Brachystegia (Miombo) woodland - habitats not normally inhabited by species of these genera. Rhampholeon hattinghi sp.

A phylogenetic review of the African leaf chameleons: genus Rhampholeon (Chamaeleonidae): the role of vicariance and climate change in speciation.

The phylogenetic associations among 13 currently recognized African leaf chameleon species were investigated by making use of mitochondrial and nuclear DNA sequence data (44 taxa and 4145 characters). The gene tree indicates two divergent clades within Rhampholeon; this finding is congruent with previous morphological suggestions. The first clade (I) comprises three taxa (R.

Phylogenetics of the southern African dwarf chameleons, Bradypodion (Squamata: Chamaeleonidae).

The taxonomic relationships within the dwarf chameleons (Bradypodion) of southern Africa have long been controversial. Although informal phenotypic groups have been suggested, the evolutionary relationships among the 15 recognised species in southern Africa have not been previously investigated. To investigate the relationships among species within this genus, fragments of two mitochondrial genes (16S ribosomal RNA and ND2) were sequenced and analysed using maximum parsimony, maximum likelihood and Bayesian inference.