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193 results for “Albertine Rift”
Data from: Phylogeography of the reed frog Hyperolius castaneus (Anura: Hyperoliidae) from the Albertine Rift of Central Africa: implications for taxonomy, biogeography and conservation
We examine the systematics of multiple populations of the Albertine Rift endemic amphibian Hyperolius castaneus, which currently incorporates four subspecies. Standard morphometric data were analyzed with principal components analyses and analyses of covariance. Phylogenetic analyses of two mitochondrial (16S, cyt b) and one nuclear (RAG1) genes were analyzed from 41 samples representing three subspecies. Results indicated some significant morphometric differences between the nominate subspecies H. c. castaneus and the Itombwe Plateau subspecies H. c. constellatus, and phylogenetic analyses of molecular data recovered these taxa as reciprocally monophyletic groups. We recognize these two allopatric populations as recently diverged, but distinct species, H. castaneus and H. constellatus. The subspecies H. c. submarginatus from the Kabobo Plateau is transferred to the synonymy of H. constellatus, but the status of the unsampled subspecies H. c. rhodogaster, described from mid-elevations of the western Itombwe Plateau, remains problematic. The phylogeographic pattern of our study resembles some, but not all, Albertine Rift vertebrates that have been examined with molecular data. Hyperolius constellatus is restricted to the Itombwe and Kabobo plateaus, which are of special conservation concern because of high levels of amphibian diversity and endemism, and multiple threats from deforestation, mining activities and road construction.
FIGURE 8 in 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
FIGURE 8. Rhampholeon hattinghi sp. nov. adult female in stress display with distinctive coloration.
FIGURE 4 in 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
FIGURE 4. Maximum likelihood topology for Kinyongia. Nodes supported by both ML (>70% bootstrap) and Bayesian posterior probabilities (>0.95pp) are denoted with black circles. Node supported by Bayesian only is denoted with a white circle.
FIGURE 10 in 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
FIGURE 10. Comparison of head dimensions of the Holotypes of Kinyongia mulyai sp. nov. (top) and Kinyongia adolfifriderici ZMB 22709 (bottom) showing differences in head length and width. Note the body dimensions of K. mulyai sp. nov. (a male) are snout/vent 44mm and tail length 63mm, whilst that of K. adolfifriderici (a female) are 54mm and 62mm respectively.
FIGURE 9 in 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
FIGURE 9. Rhampholeon hattinghi sp. nov. sulcal and lateral views of the male hemipenes demonstrating a) the inwardly curved apical horns and b) the prominent parasulcal evaginations billowing anteriorly beneath the origin of each horn.
FIGURE 5 in 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
FIGURE 5. Comparison of heads of male Rhampholeon hattinghi sp. nov. (right) and Rhampholeon cf. boulengeri (left).
FIGURE 7 in 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
FIGURE 7. Rhampholeon hattinghi sp. nov., adult male dorsal view showing distinctive white markings on tail.
FIGURE 1 in 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
FIGURE 1. Digital elevation map of the Albertine Rift region with the highest altitudes shaded darkest. Inset: Map of Africa with the region shown on the larger map indicated by the small box. The countries of Mozambique and Malawi are shaded in grey.
FIGURE 3 in The distribution of the Bururi Long-fingered Frog (Cardioglossa cyaneospila, family Arthroleptidae), a poorly known Albertine Rift endemic
FIGURE 3. Habitat at various localities for which C. cyaneospila is recorded. A. Along Rurezi Stream at eastern edge of Bururi Nature Reserve, Burundi (9 December 2011; photo: DCB). B and C from color glass slides deposited at the California Academy of Sciences (San Francisco, CA, USA). B. Luiko, DRC, verbatim information on slide: 'LUIKO 1850 m; 29-VI- 1950' (photo: R.F. Laurent). C. Mwana, DRC, verbatim information on slide: 'MWANA 1650m; 27-VII-50' (photo: R.F. Laurent); note tree ferns of the family Cyatheaceae in C. D. Within Nyungwe Forest National Park, Rwanda (18 June 2016; photo: CB).
FIGURE 2 in The distribution of the Bururi Long-fingered Frog (Cardioglossa cyaneospila, family Arthroleptidae), a poorly known Albertine Rift endemic
FIGURE 2. Four recent records of Cardioglossa cyaneospila. A. Unvouchered individual photographed in June 2009 from near Mubwindi Swamp in Bwindi Impenetrable National Park, Uganda (photo A. Bowley). B. Male (CAS 250950) collected in December 2011 in Bururi Forest Reserve in Burundi (photo: DCB). C. Female (UTEP 21433) collected in November 2015 in Nzovu sector of Kahuzi-Biega National Park in DRC (photo: G. Mitamba). D. Unvouchered individual in June 2016 from Nyungwe Forest National Parik, Rwanda (photo C. Boix).
FIGURE 1 in The distribution of the Bururi Long-fingered Frog (Cardioglossa cyaneospila, family Arthroleptidae), a poorly known Albertine Rift endemic
FIGURE 1. Distribution of Cardioglossa cyaneospila based on the type locality (star), other published localities (squares), and new records (circles) from either recent field research or various historical records (see Table 1). The environmental niche model (ENM) based on analysis using Maxent is shown in red, representing the fundamental niche (approximately 37,670 km2). Country abbreviations are as follows: BI, Burundi; CD, Democratic Republic of Congo; RW, Rwanda; TZ, Tanzania; UG, Uganda.
Fig. 4 in On the genus Pachygnatha (Araneae, Tetragnathidae) in the Albertine Rift of Burundi, with the description of three new species
Fig. 4. Pachygnatha ventricosa sp. nov. A. Male palp, ventral view. B. Male palp, retrolateral view. C. Male chelicera, frontal view. D. Male chelicera, ventral view. E. Female chelicera, ventral view. F. Female chelicera, frontal view. G. Female abdomen, ventral view. H. Female external genitalia, ventral view. Scale bars: AF, H = 0.1 mm; G = 1 mm.
Fig. 3 in On the genus Pachygnatha (Araneae, Tetragnathidae) in the Albertine Rift of Burundi, with the description of three new species
Fig. 3. Pachygnatha intermedia sp. nov. A. Male palp, ventral view. B. Male palp, retrolateral view. C. Male chelicera, frontal view. D. Male chelicera, ventral view. E. Female chelicera, ventral view. F. Female chelicera, frontal view. G. Female abdomen, ventral view. H. Female external genitalia, ventral view. Scale bars: A – F, H = 0.1 mm; G = 1 mm.
Fig. 2 in On the genus Pachygnatha (Araneae, Tetragnathidae) in the Albertine Rift of Burundi, with the description of three new species
Fig. 2. Pachygnatha bispiralis sp. nov. A. Male left palp, dorsal view. B. Male palp, retrolateral view. C. Male right chelicera, frontal view. D. Male right chelicera, ventral view. Scale bars = 0.1 mm.
Fig. 1. A – C in On the genus Pachygnatha (Araneae, Tetragnathidae) in the Albertine Rift of Burundi, with the description of three new species
Fig. 1. A – C. Pachygnatha bispiralis sp. nov. A. Male habitus, dorsal view. B. Male habitus, ventral view. C. Male habitus, lateral view. D – I. Pachygnatha intermedia sp. nov. D. Male habitus, dorsal view. E. Male habitus, ventral view. F. Male habitus, lateral view. G. Female habitus, dorsal view. H. Female habitus, ventral view. I. Female habitus, lateral view. J – O. Pachygnatha ventricosa sp. nov. J. Male habitus, dorsal view. K. Male habitus, ventral view. L. Male habitus, lateral view. M. Female habitus, dorsal view. N. Female habitus, ventral view. O. Female habitus, lateral view. Scale bars = 2 mm.
Figs 30 - 34 in On the Afrotropical genus Holmelgonia (Araneae, Linyphiidae), with the description of three new species from the Albertine Rift
Figs 30 - 34. Holmelgonia bosnasutus sp. nov. (♂ holotype, ♀ paratype 227507). 30. Palp, ♂, retrolateral view. 31. Palpal tibia, ♂, dorsal view. 32. Palpal tibia, ♂, prolateral view. 33. Embolic division of ♂ palp, ventrolateral view. 34. Epigyne, ventral view. Scale bars = 0.1 mm.
Figs 39 - 40. — 39 in On the Afrotropical genus Holmelgonia (Araneae, Linyphiidae), with the description of three new species from the Albertine Rift
Figs 39 - 40. — 39. Holmelgonia afromontana sp. nov. (♀, 227154). Epigyne, cleared, dorsal view. — 40. Holmelgonia bosnasutus sp. nov. (♀, 227507). Epigyne, cleared, dorsal view. Scale bars = 0.1 mm.
Figs 2 - 3 in On the Afrotropical genus Holmelgonia (Araneae, Linyphiidae), with the description of three new species from the Albertine Rift
Figs 2 - 3. Holmelgonia disconveniens sp. nov. (♂, MRAC 227149). 2. SEM micrographs of chelicerae, lateral view, showing absence of stridulating ridges. 3. Detail of previous. Scale bars = 100 μm.
Fig. 5. A in On the genus Pachygnatha (Araneae, Tetragnathidae) in the Albertine Rift of Burundi, with the description of three new species
Fig. 5. A. Pachygnatha intermedia sp. nov. Female genitalia, cleared, ventral view. B. Pachygnatha ventricosa sp. nov. Female genitalia, cleared, ventral view. Scale bars = 0.1 mm.
Figs 26 - 29 in On the Afrotropical genus Holmelgonia (Araneae, Linyphiidae), with the description of three new species from the Albertine Rift
Figs 26 - 29. Holmelgonia afromontana sp. nov. (♂ holotype, ♀ paratype 227154). 26. Palp, ♂, retrolateral view. 27. Palp, ♂, dorsal view. 28. Epigyne, ventral view. 29. Embolic division of ♂ palp, ventrolateral view. Scale bars = 0.1 mm.
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