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 chandleri Vásquez-Vélez n. sp. ( Fig. 12 ) Diagnosis. Pselaphomorphus chandleri is characterized by the combination of small body size (less than 2.0 mm), the strong elytral basal ridge and the presence of humeral teeth. Additionally, male genitalia are apically symmetrical and dorso-ventally constricted in lateral view. Description. Male. Body length 1.6 mm . Body flattened dorsally, yellowish to light brown, with clear pilosity. Head triangular (length 0.5 mm , width 0.3 mm ), base of antennal tubercle short, not longer than diameter of eye. Longitudinal sulcus wider between eyes, spindle-shaped. Eyes kidney-shaped (diameter 0.2 mm ). Antennal length 1.25 mm . Antennomere length as follows: 1 ( 0.1 mm ), 2 ( 0.06 mm ), 3 to 5 ( 0.04 mm ), 6 ( 0.02 mm ), 7 to 10 ( 0.1 mm ), and 11 ( 0.2 mm ), clava conspicuous. Maxillary palpi yellowish, with short and even pilosity. Pronotum transverse (length 0.3 mm , width 0.4 mm ): lateral lobes trapezoidal, basal angle round. Pronotal disc oval, longitudinal, and transverse sulci wider toward edges. Elytra length 0.5 mm , width 0.7 mm . Humeral teeth present. Sutural and basal discal fovea present and evident, basal carina present. Sutural stria present. Abdominal segments I–V dorsally with length as follows: 0.2, 0.06, 0.06, 0.1, 0.06 (mm). Ventrally, segment V distally rounded, segment VI with round depression, pygidial suture present. Genitalia. Phallobase regular, globose, bilobed, symmetrical. Median lobe short, symmetrical, ventrally membranous, with narrow transverse lobe. Accessory lobes absent ( Figs. 12 B, 12C). Type material. Holotype (male): “ Panama , Chiriquí Province, 8°44’N , 62°15’W . Fortuna , N. Wolda UV lt, VII-3-1974 ” ( FMNH ). Paratypes (10): Panama : 1 male , Chiriquí Province, La Fortuna “Hydro trail”, 1150 m ., 08°42’N , 82°14’W , V-9-1995 , flight intercept trap, J. Ashe, R. Brooks ( KSEM ); 7 males , 16 km W Almirante, Bocas de Toro, II-24 / IV-29-1980 , UV light, H. Wolda ( UNHC ); 1 male , Chiriquí, 8.4 km NW Boquete Vocan Baru, 1860 m , 8°48’0”N , 82°28’0”W , VI-16-1995 , dry oak forest litter, R. Anderson ( KSEM ); 1 male , Chiriquí, 20 km N Gualaca, 08°39’N , 82°12’W , V-24 / VI-9-1995 , flight intercept trap J. Ashe, R. Brooks ( KSEM ). Etymology. Patronymic; named after Pselaphinae taxonomist Dr. Donald Chandler (University of New Hampshire) whose strong support is gratefully acknowledged.