Pselaphomorphus longissimus Vásquez-Vélez, 2016

Vásquez-Vélez, Laura M., 2016, Revision of the genus Pselaphomorphus Motschulsky, 1855 (Staphylinidae, Pselaphinae: Jubini), Zootaxa 4107 (1), pp. 1-48 : 25

Pselaphomorphus longissimus Vásquez-Vélez n. sp.

( Fig. 17 )

Diagnosis. Pselaphomorphus longissimus is characterized by the combination of relatively large body size, very elongate head and very long and slender legs and antennae, similary to P. agametopus . These two species can be differentiated by darker coloration and the aedeagus with only one accessory lobe that surrounds the median lobe in P. longissimus .

Description. Male. Body length 3.0 mm. Body flattened dorsally, amber, with yellowish pilosity. Head elongate (length 1.0 mm, width 0.4 mm), base of antennal tubercle broad, at 1.5 times diameter of eye. Longitudinal sulcus wider between eyes, spindle-shaped. Eyes round (diameter 0.2 mm). Antennal length 2.4 mm. Antennomere length as follows: 1 (0.14 mm), 2 and 3 (0.08 mm), 4 and 5 (0.18 mm), 6 (0.16 mm), 7 to 9 (0.22 mm), 10 (0.2 mm), and 11 (0.32 mm), clava absent. Maxillary palpi amber, with short and even pilosity. Pronotum quadrate (length and width 0.5 mm). Lateral lobes triangular. Antebasal lobe medially depressed, transverse sulcus projected towards pronotal disc. Longitudinal sulci wider towards basal end. Elytra length 0.6 mm, width 0.8 mm. Humeral teeth and elevation present. Sutural fovea transversely elongate and deep, followed by sutural stria. Basal discal fovea rounded. Abdominal segments I–V dorsally with length as follows: 0.55, 0.1, 0.1, 0.15, 0.05 (mm). Ventrally, segment V distally round, segment VI depressed medially, pygidial suture not visible. Genitalia. Phallobase bilobed, with long arms. Median lobe divided into two pieces. Dorsal piece narrow and apically curved towards right; ventral piece flat and medially divided into two short curved arms. One accessory lobe articulated toward left side of phallobase, ventrally surrounding median lobe; right side of accessory lobe broader than left side; left side narrow and long, as long as median lobe ( Figs. 17 B, 17C).

Type material. Holotype (male): “ Panama, Chiriquí Province. 8º44’N, 82º15’W Fortuna. X-26-1978. H. Wolda. U.V. light” ( FMNH); Paratype (1 male): Panama, Veraguas Province, 8 km W. Santa Fe Cerro Tute, 900 m, 08°30’26”N, 81°6’49”W, VII-24/26 -1999, Yellow Pan Trap, J.B. Wooley ( LSAM).

Etymology. Named after its characteristic long legs, head and antennae, the Latin word longissimus meaning ‘the longest’.

Figures

FIGURE 17. Pselaphomorphus longissimus n. sp. A. Dorsal habitus. B. Aedeagus dorsal view. C. Aedeagus lateral view.