. Bonn zoological bulletin. Zoology. Fig. 7. Mt. Hanang from Katesh, SSW side of the mountain. Bonn zoological Bulletin 57 (1): 19-29 es. (males: SVL = 72,30 mm, N = 9 / females: SVL = 75,52 mm, N = 14). No significant differences in relative tail length (TL) between sexes could be observed (males: TL = 66,22 mm / females: TL = 62,71 mm). Distribution. Only known from Mt. Hanang Catchment Forest Reserve (4° 25' to 4° 35' S and 35° 20' to 35° 25' E) situated about 4 km from the district capital Katesh and 70 km from the town Babati in the administrative region of Arusha. The new species is name
. Bonn zoological bulletin. Zoology. Fig. 7. Mt. Hanang from Katesh, SSW side of the mountain. Bonn zoological Bulletin 57 (1): 19-29 es. (males: SVL = 72,30 mm, N = 9 / females: SVL = 75,52 mm, N = 14). No significant differences in relative tail length (TL) between sexes could be observed (males: TL = 66,22 mm / females: TL = 62,71 mm). Distribution. Only known from Mt. Hanang Catchment Forest Reserve (4° 25' to 4° 35' S and 35° 20' to 35° 25' E) situated about 4 km from the district capital Katesh and 70 km from the town Babati in the administrative region of Arusha. The new species is named after the type-local- ity Mount Hanang. Ecological remarks and habitat preference.: T. hanan- gensis n. sp. was found in upland moorland at 2800 m on the moister north-eastern side of Mt. Hanang. Despite a prevaling semi-arid climate with 750-1500 mm annual rainfall, a pronounced mist effect on the eastern and north- eastern slopes is leading to a maximum of 2000 mm pre- cipitation per year at the higher regions of the mountain. The sampled specimens where observed during daytime in bushy highland vegetation (with Hypericum sp., Myr- sine africana, Protea sp.) near the source of the river Him- it, roosting on twigs at a height ranging from 100-150 cm from the ground. Phylogenetic affinities. In order to infer the phylogenet- ic relationships between the different members of the bitaeniatus group on the basis of molecular data maximum parsimony (MP), maximum likelihood (ML) and Bayesian analyses (PP) were conducted. Maximum likelihood analysis was conducted with a reduced dataset, due to computational constraints. Sequences obtained from the combined 16S+12S rRNA mitochondrial genes were analysed together with gene-fragments of Trioceros sternfeldi, T. rudis, T. ellioti, T. hoehnelii, T. bitaeniatus, T. narraoica, T. werneri, T. jacksonii, T. deremensis and T. johnstoni. The two included specimens of T. hanangen- sis n. sp. were found in a well supported clade in the MP an
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