Lepidiella limicornis, Jaume-Schinkel & Kvifte, 2022

Jaume-Schinkel, Santiago & Kvifte, Gunnar Mikalsen, 2022, First record of Lepidiella Enderlein, 1937 from the Oriental Region (Diptera, Psychodidae), ZooKeys 1115, pp. 73-79 : 73

Lepidiella limicornis sp. nov.

Figs 1-5

Examined material.

Holotype, ♂, slide mounted,. " Lepidiella limicornis #m // HOLOTYPE // Thailand: Chiang Mai, // Doi Pui Mong village , // waterfall/pond, // 18.8163°N, 98.8831°E // 9.IV.1991, (hand net) // J. Kjaerandsen leg. // ZMBN #:", [ZMBN], paratype, ♂, slide mounted, same label information [ZMBN].

Differential diagnosis.

This species can be easily differentiated from all the species in Lepidiella by the combination of the following characters: eyes separated by 4 facet diameters, interocular suture as inverted U, second flagellomere asymmetrical, and hypopods with four tenacula.

Type locality.

Thailand, Chiang Mai, Doi Pui Mong village (18.8163°N, 98.8831°E).

Description.

Measurements in mm (n = 2). Wing length 1.81, width 0.68; head length 0.45, width 0.34; Antennal segments, scape: 0.19, pedicel: 0.07, flagellomere 1: 0.08, flagellomere 2: 0.08, flagellomeres 3-9: 0.06; Palpomeres 1: 0.08, 2: 0.12, 3: 0.12, 4: 0.16.

Male. Holotype. Head 2 × longer than wide, with a pair of 3-branched cornicula, eyes separated by approximately 4 facet diameters; eye bridge with four facet rows; interocular suture as an inverted U, extending towards middle of vertex, a little longer than eye bridge width. Antenna with scape about 4 × longer than its width, about 3 × length of pedicel, cylindrical, tapered at base, and broadening at apex; first flagellomere cylindrical, symmetrical, about ½ width of scape, second flagellomere asymmetrical with a protuberance on inner margin, subsequent flagellomeres symmetrical, cylindrical, about ½ width of first and second flagellomeres. Total number of flagellomeres unknown as apical flagellomeres are missing in examined specimens; maximum number of flagellomeres = 7. Palps extending to flagellomere 6, palpal proportions, 1.0:1.5:1.5:2.

Wing 2.7 × longer than wide, hyaline except costal cell which is brownish; Sc not reaching C but extending to junction of R2+3+R5; R4 ending at wing apex, CuA reaching wing margin.

Terminalia. Hypandrium narrow, with rounded margin, seems partially fused with gonocoxites; length of gonocoxites 0.60 length of gonostyli, about 2 × longer than wide; gonostyli narrow, tapered towards apex, with alveoli in outer basal ⅓; gonocoxal apodemes triangular, medial extension connected to base of aedeagus; aedeagus symmetrical, bifurcated; paramere narrow, well sclerotized; ejaculatory apodeme dorsoventrally flattened, rounded at anterior margin and tapering towards aedeagus; epandrium about same length and width; basal margin concave around entire length, apical margin strongly concave at middle; hypopods about 1.75 × length of gonocoxites, narrow with apical margin rounded; 4 apical tenacula on each; tenacula apex rounded, concave; epiproct triangular with apical margin rounded, covered in micropilosity.

Female. Unknown.

Etymology.

From Latin līmus = oblique + cornus = horns, making references to the oblique shape of the fourth antennal segment (second flagellomere).

Distribution.

Only known from the type locality.

Figures

Figures 1 - 5. Lepidiella limicornis sp. nov., male holotype. 1 head 2 first antennal segments 3 wing 4 hypandrium, gonocoxites, gonostyli, aedeagus 5 epandrium and surstyli. Abbreviations: aed = aedeagus, cor = corniculi, eja = ejaculatory apodeme, ep = epandrium, fla = flagellomere, gns = gonostylus, gnx = gonocoxites, scp = scape, hpd = hypopod. Scale bars in millimeters.