Epicnemis dorsalis, Gonzalez & Häggqvist, 2020

Gonzalez, Lisa & Häggqvist, Sibylle, 2020, Revision of the Oriental Region genus Epicnemis Borgmeier (Diptera: Phoridae), Zootaxa 4803 (1), pp. 103-124 : 109

Epicnemis dorsalis new species

Figures 7 , 22 .

Diagnosis. This species is recognizable by the globose genitalia and the phallus with its four separate dark elements.

Description. Body 2.1 mm long. Frons light brown and relatively narrow; frontal width.047 head width. Frontal ratio 1. Twelve large frontal setae present, including one pair of supra-antennal setae. Ventral interfrontal setae same width apart as dorsal interfrontal setae. Ocellar triangle dark brown and strongly separated from rest of frons, with rounded posterior margin. Lateroventral part of frons with white triangular region with thin black line. Scutum yellowish-brown. Scutellum brown, short, broad, with four subequal setae. Pleuron yellowish-brown dorsally to whitish ventrally. Foretibia with anterodorsal row of several differentiated setae, decreasing in size apically. Midtibia with one posterodorsal seta near base, one slightly more apical anterodorsal seta present, and one anterodorsal seta at or above midlength; dorsally with setal palisade extending from base to midlength, more apically with transverse rows of fine setulae; few posterodorsal setae slightly enlarged apically. Hind tibia with 3–4 scattered medium-sized anterodorsal setae; dorsally with complete setal palisade, with row of small posterodorsal setulae closely parallel, followed more posteriorly by bare space before regular setulation. Wing large; mean costal length 0.54 wing length. Costal sector ratios 3.4:1. Halter knob yellowish-brown. Abdominal tergite 1 yellow, large, and extending laterally on segment. Tergite 2 yellow except more brown laterally; tergites 3–6 brown. Shape of epandrium ovoid with strongly rounded dorsum; length of epandrium greater than depth. Setae on posteroventral margin of epandrium approximately twice length of setae on cercus. Phallus sharply curved at base with slight separation in sclerites. Apex of phallus broad with weakly sclerotized ventral process.

Distribution. Malaysia, Indonesia.

Etymology. Named for the rounded dorsum of the epandrium.

HOLOTYPE. ♂. MALAYSIA: Sabah: Maliau Basin , 4.74°N, 116.97°E, 254m, 6–11.xii.2007, B.Viklund, N.Jonsson, Malaise trap VKBS 20070-03 [ LACM ENT 383597 ] ( SMNH).

PARATYPES. INDONESIA: Java: Diatos Padang , 1♂, 8–12.vii.1992, K.Snyder, ( LACM) . MALAYSIA: Sabah: Maliau Basin , 4.74°N, 116.97°E, 254 m, 1♂, 6–11.xii.2007, B.Viklund, N.Jonsson, Malaise trap VKBS 20070-03 ( LACM) , Riparian Nature Trail , 4.74°N, 116.97°E, 254 m, 1♂, 11–15.xii.2007, B.Viklund, N.Jonsson, Malaise trap VKBS 20070-034 ( LACM) .

Figures

FIGURES 3–11. Male genitalia of Epicnemis species, left lateral.

FIGURES 18–23. Heads, Epicnemis species, males, anterior view.