Eurygarka nelderi Curler

Curler, Gregory R. & Moulton, John K., 2008, A review of the Nearctic species of the genus Eurygarka Quate (Diptera: Psychodidae), Zootaxa 1740, pp. 28-36 : 34-35

Eurygarka nelderi Curler n. sp.

( Fig. 9 )

Diagnosis. Larva: Unknown. Pupa: Unknown. Adult: Male eye bridge contiguous. Male ascoids: medial anterior branches with 6, and lateral anterior branches with 6 longitudinal veins. Male terminalia: gonocoxites with a posteromedial lobe bearing 6 setiform sensilla; gonostyles tapering progressively from base to apex, with apices curved slightly, not bent 45° medially; aedeagus acuminate apically; sternal bridge transverse, quadrangular, with triangular projections laterally; ventral extensions of parameres acuminate, arcuate, directed medially, terminating at same point as aedeagus; apices of cercopods tapered, retinacula length about equal to 1/2 length of cercopod.

Description. Larva Unknown.

Pupa Unknown.

Adult Male ( Fig. 9 ): Measurements, (N = 4) head width 0.38 (0.37–0.40) mm, head length 0.36 (0.35– 0.37) mm, wing length 1.64 (1.63–1.67) mm, wing width 0.62 (0.60–0.63) mm, palpomere proportion: 1–1.8– 2.6–3.4. Eye bridge contiguous. Frontal scar patch subquadrate anteriorly, bilobed posteriorly, without median spur. Antennal flagellum typical of Eurygarka ; Ascoids: medial anterior branches with 6, and lateral anterior branches with 6 longitudinal veins. Palpi with palpomeres of subequal width. Mouthparts with labellum slightly laterally compressed. Wing: medial fork placed slightly basal to radial fork, both arising basal to apex of CuA2; R3 and M2 weakened at base. Terminalia: gonocoxites with a posteromedial lobe bearing 6 setiform sensilla; gonostyles tapering progressively from base to apex, with apices curved slightly, not bent 45° medially; aedeagus acuminate apically; sternal bridge transverse, quadrangular, with triangular, lateral projections; ventral extensions of parameres acuminate, arcuate, directed medially, terminating at same point as aedeagus; apices of cercopods tapered, retinacula length about equal to 1/2 length of cercopod.

Adult Female: Unknown.

Type material. Holotype [adult male]: U.S.A. SOUTH CAROLINA: Richland Co: Riverbanks Zoo & Botanical Gardens, 34°00’N 81°04’W, 22.vi.2007, coll. M.P. Nelder, Fay-Prince UV trap; deposited USNM. Specimen dissected, mounted on micro slide. Paratypes [3 adult male (slides)]: same location as holotype, 22.viii.2006, coll. M.P. Nelder, Fay-Prince UV trap. Paratypes deposited in USNM, CUAC and UTK.

ETYMOLOGY. Named for Mark P. Nelder, in recognition of his contribution of numerous specimens for this study.

Distribution. Known from one location in South Carolina.

Remarks. Adult males can be easily recognized by the shape of the gonostyli and parameres, and length of the retinacula.

Figures

FIGURES 7 – 10. Eurygarka helicis (Dyar). 7. Male head, frontal view. 8. Male terminalia, dorsal view. 9. Male antennal flagellomere 8 with ascoids, left antenna, frontal view. Eurygarka nelderi Curler n. sp. 10. Male terminalia, dorsal view. Scale bars = 0.25 mm (7), 0.1 mm (8, 10), 0.05 mm (9).