Rhinolophus robinsoni K. Andersen 1918
Creators: name: Burgin, Connor
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Rhinolophidae
Rhinolophus
Rhinolophus robinsoni

description: 57. Robinson’s Horseshoe <b>Bat</b> <i>Rhinolophus robinsoni</i> <b>French:</b> <i>Rhinolophe</i> de Robinson <i>I</i> <b>German:</b> Robinson-Hufeisennase <i>I</i> <b>Spanish:</b> Herradura de Robinson <b>Other common names:</b> <i>Peninsular</i> Horseshoe Bat <b>Taxonomy.</b> <i>Rhinolophus robinsoni</i> K. Andersen, 1918, “ Kao Nawng, Bandon [Surat Thani <i>Province</i>], Lower Siam [= Thailand].” Included in the <i>megaphyllus</i> species group, and appears to be sister to a clade that includes <i>A philippinensis, R megaphyllus,</i> <i>R celebensis,</i> and A virgo, based on limited genetic data. <i>A robinsoni</i> has often been treated as a subspecies or synonym of A <i>megaphyllus,</i> but morphological and genetic data support their specific separation. In addition to the two subspecies recognized here, a third, <i>thaianus.</i> described from northern and western Thailand by J. E. Hill in 1992 (originally named <i>siamensis</i> by D. <i>A</i>. McFarlane and B. R. Blood in 1986 but this name is preoccupied) is commonly recognized; however, it this name is probably a synonym of <i>A chaseni</i> which is presently accepted as monotypic. Two subspecies recognized. <b>Subspecies and Distribution.</b> A <i>r. robinsoni</i> K. Andersen, 1918 - Malay Peninsula. <i>A r. klossi</i> K. Andersen, 1918 - Tioman, Pemanggil, and Aur Is off SE Malay Peninsula. Descriptive <b>notes.</b> Head-body 47-55 mm, tail 19-29 mm, ear 16-23 mm, hindfoot 9 mm, forearm 40-46 mm; weight 6-13 g. Dorsal pelage is dark brown to reddish brown, whereas ventral pelage is slightly paler. Ears are of medium length. Noseleaf has long, broadly triangular lancet that is practically straight with pointed tip; connecting <i>process</i> is high and rounded; sella is broad basally and gets slightly wider in middle before narrowing abruptly before squared-off tip; horseshoe is wide, at 8-3— 9- 2 mm, nearly covers muzzle, has small but noticeable median emargination, and has lateral leaflets that are mostly covered by horseshoe. Lower lip has three mental grooves. Skull is of medium build; anterior nasal swellings are moderately developed and globular; sagittal crest is low and braincase is elongate; frontal depression is longer than it is wide, and is clearly defined; supraorbital crests join sagittal <i>crest</i> more or less behind mid-orbit; rostrum is elongated. P2 is small with well-developed cusp and is within tooth row labially, separating <i>C</i> 1 and P4 widely; P3 is partially or completely displaced labially. <b>Habitat.</b> Known from mixed deciduous forest and lowland dipterocarp forest in Thailand and from lowland and hill forest in Malaysia. <b>Food and</b> Feeding. No information. Breeding. No information. <b>Activity patterns.</b> Robinson’s Horseshoe Bat is nocturnal. It has been reported roosting in <i>crevices</i> in rocks and in palms in the understory, in Malaysia. Call shape is FM/CF/ FM with a F of 64-68 kHz. <b>Movements, Home range and Social</b> organization. Robinson’s Horseshoe <b>Bat</b> probably roosts in small colonies. <b>Status and Conservation.</b> Classified as Near Threatened on <i>The IUCN Red List</i> Robinson’s Horseshoe Bat is considered rare throughout its <i>relatively</i> restricted range (as currently known). It is <i>likely</i> threatened by deforestation for logging, agriculture, and fires. <i>Very</i> little is known of its <i>ecology</i> or potential threats, and further research is needed. <b>Bibliography.</b> Bumrungsri &amp; Csorba (2008), <i>Corbet</i> &amp; Hill (1992), Csorba et al. (2003), Kingston et al. (2006), McFarlane &amp; Blood (1986), Robinson et al. (1995), Zhang Lin et al. (2018).
description: Published as part of <i>Burgin, Connor, 2019, Rhinolophidae, pp. 280-332 in Handbook of the Mammals of the World – Volume 9 Bats, Barcelona :Lynx Edicions</i> on pages 308-309, DOI: 10.5281/zenodo.3748525