Rhinolophus truncatus Peters 1871
Creators: name: Andersen, Knud
Publisher: name: Zenodo
Year: 1905
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Rhinolophidae
Rhinolophus
Rhinolophus truncatus

description: <b>3.</b> Rhinolophus Peters. <i>Rhinolophus truncatus</i> Peters, MB. Akad. Berlin, 1871, p. 307. <i>Rhinolophus meqaphyllus</i> (non Gray), var. <i>a,</i> Dobson, Cat. Cliir. Brit. Mus. (1878) p.. <i>Diagnosis.</i> to <i>Rh. simpleX.</i> more slightly at middle. Summit of sella square-cut, or even concave. Base of fur almost blackish. Forearm 44 <i>’</i> 7-46 <b>’</b> 8 mm. <i>Details.</i> In this species the sella * is not of the shape characteristic of <i>Rh. simpleX</i> and <i>megaphyllus.</i> It is narrower, not considerably broader at the base than at the summit, and the constriction at the middle is less distinct. This points decidedly away from <i>simpleX,</i> and towards <i>nanus, celebensis,</i> and <i>borneensis.</i> The square-cut (or concave) summit of the sella seems to be a. rather common feature in those forms of the present section of the group which are inhabitants of small islands (cf. <i>Rh. megaphyllus monachus, Rh. nanus, Rh. borneensis spadiX).</i> Lancet long and cuneate. Wing-structure and proportionate length of tail as in <i>simpleX.</i> Plagiopatagium inserted on tarsus. <i>Colour</i> (six skins; adult individuals, but teeth quite, or almost, unworn). Very peculiar. General impression: a very dark brown. Details: hairs of upper side “ broccoli-brown <i>”</i> at tip; below the tip, for a broad space, almost <i>“</i> clove-brown <i>”</i> (more exactly: an exceedingly dark shade of “ hair-brown, <i>”</i> very much approaching clove-brown); the extreme base of the hairs, immediately at the skin, again somewhat lighter. Individual hairs of the under side much of the same colour, but the tips more brightly broccolibrown, giving the under side a somewhat lighter appearance. All the specimens are exactly alike in colour. <i>Skull.</i> Essential characters as in <i>Rh. simpleX.</i> Nasal swellings narrow. <i>Dentition.</i> p3 is, if anything, a little more reduced than in <i>simpleX.</i> In two skulls I find it placed in the tooth-row, but slightly towards the external side; in a third, on the one side half external, on the other external; in a fourth, external on both sides, and the interspace between p, and p4 therefore very narrow. p2 is always in the tooth-row; its cusp rather well developed, though somewhat smaller than in <i>simpleX.</i> No interspace between p2 and p1. <i>Measurements.</i> On p. 84. <i>Distribution.</i> Batchian. <i>Technical name.</i> One of the two typical specimens (in the Berlin Museum) was collected on Batchian by A. R. Wallace and forwarded to Prof. Peters by Tomes. The whole series in the British Museum is from the same island and the same collector, and <b>four</b> of the examples belong to the <i>recently</i> acquired Tomes Collection; they are therefore practically (though not technically) co-types. <i>Remarks.</i> The dentition of <i>Rh.</i> truncatus proves it to be on a slightly higher level than <i>simpleX;</i> the interspace between the upper canine and p4 is a little narrower, p2 a little more reduced. The vacillation in the position of p3 gives evidence of the same tendency as in <i>simpleX</i>: towards the more advanced members of the group. In the shape of the nose-leaves it has taken a course pointing towards <i>borneensis.</i> In its coloration it seems to stand alone. K.
description: Published as part of <i>Andersen, Knud, 1905, On some Bats of the Genus Rhinolophus, with Remarks on their Mutual Affinities, and Descriptions of Twenty-six new Forms., pp. 75-145 in Proceedings of the Zoological Society of London 2</i> on pages 80-81, DOI: 10.5281/zenodo.3757451