Trinycteris, Sanborn, 1949

Simmons, Nancy B. & Voss, Robert S., 1998, The mammals of Paracou, French Guiana, a Neotropical lowland rainforest fauna. Part 1, Bats, Bulletin of the American Museum of Natural History 237, pp. 1-219 : 92

Trinycteris

As discussed in the accounts for Glyphonycteris and Micronycteris (above), we follow Peffley et al. (MS) in elevating Trinycteris to generic rank. As recognized herein, Trinycteris is monotypic, containing only T. nicefori . Although Sanborn (1949) diagnosed Trinycteris , he did not include all of the characters that we consider useful for distinguishing phyllostomine genera. We therefore provide an emended diagnosis below.

EMENDED DIAGNOSIS OF TRINYCTERIS : Dorsal fur tricolored (each hair with dark base, pale median band, and dark tip); ventral fur dark; fur on external surface of leading edge of ear pinna short (≤ 4 mm); pinna pointed (not rounded) with concavity on posterior border near tip; interauricular band absent; ventral margin of narial horseshoe confluent with upper lip (boundary between horseshoe and lip not defined by a ridge or free flap of skin); chin with a pair of dermal pads arranged in a ‘‘V’’ with no central papilla; fourth metacarpal shortest, third longest; second phalanx of wing digits III and IV longer than first phalanx of same digits; calcar markedly shorter than hind foot; rostrum and anterior orbital region not inflated; basisphenoid pits deep; mastoid breadth less than zygomatic breadth; dental formula I 2/2, C 1/1, P 2/3, M 3/3 x 2 = 34; upper canine much less than twice the height of the inner upper incisor; outer upper incisor in normal position between inner incisor and canine, not excluded from occlusion with lower incisors; P3 not molariform, lingual cingulum and cusp absent; P4 lingual cingulum with convex outline and raised edge, lingual cusp small or absent; crown height of P3 less than that of P4; lower incisors trifid; p3 much smaller than p2 or p4; lower premolars aligned in row on mandible, none excluded from toothrow; coronoid process high, with relatively steep slope along upper margin from anterior to posterior.