Revision of the genus Pselaphomorphus Motschulsky, 1855 (Staphylinidae, Pselaphinae: Jubini) Author Vásquez-Vélez, Laura M. text Zootaxa 2016 4107 1 1 48 journal article 39180 10.11646/zootaxa.4107.1.1 dcbcfda1-5e9d-4f60-aea6-bcedb6402494 1175-5326 261931 248E86E7-C8D5-4542-81EE-4854276C7CE0 Pselaphomorphus macrommatus Vásquez-Vélez n. sp. ( Fig. 18 ) Diagnosis. Pselaphomorphus macrommatus is characterized by the combination of a small body size (less than 2.0 mm); yellow coloration and large eyes (one third head width). Last five antennomeres form a clava, with antennomeres 7 to 11 at least twice times longer than wide. This species can be differentiated from P. chandleri , P. parki , P. motschulskyi and P. incorum by the shape of male genitalia: in P. m a c rom m at us the base of male genitalia is symmetrical and the entire aedeagus is shorter than 0.5 mm . Description. Male. Body length 1.7 mm . Body flattened dorsally, yellowish to light brown, with clear pilosity. Head triangular (length 0.4 mm , width 0.3 mm ), base of antennal tubercle short, not longer than diameter of eye. Longitudinal sulcus wider between eyes, spindle-shaped. Eyes round (diameter 0.1 mm ). Antennal length 1.0 mm. Antennomere length as follows: 1 ( 0.06 mm ), 2 ( 0.04 mm ), 3 and 4 ( 0.04 mm ), 5 ( 0.06 mm ), 6 ( 0.04 mm ), 7 to 10 ( 0.12 mm ), and 11 ( 0.2 mm ), clava conspicuous. Maxillary palpi yellowish, with short and even pilosity. Pronotum transverse (length 0.3 mm , width 0.35 mm ): lateral lobes trapezoidal, basal angle round. Pronotal disc oval, longitudinal and transverse sulci wider towards edges. Elytra length 0.5 mm ; width 0.6 mm . Humeral teeth present. Sutural and basal discal fovea present and evident, framed by a basal carina. Sutural stria present. Abdominal segments I–V dorsally with length as follows: 0.3, 0.1, 0.1, 0.1, 0.06 (mm). Ventrally, segment V distally round, segment VI round and depressed, pygidial suture present. Genitalia. Phallobase regular, globose and symmetrical. Median lobe short, divided into two small asymmetric arms. Accessory lobes absent ( Figs. 18 B, 18C). Type material. Holotype (male): “ Ecuador , Orellana, Tiputini Biological Station, Flight intercept trap H34. VII-30 to 31-2008 . LSAM team” ( FMNH ). Etymology. The species name is composed of the Greak words macros (meaning ‘large’) and omma (meaning ‘eyes’) ( Brown 1956 ), thus referring to the characteristic large eyes of this species.