Eurygarka helicis Dyar 1929
Creators: name: Curler, Gregory R.
name: Moulton, John K.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Psychodidae
Eurygarka
Eurygarka helicis

description: Eurygarka helicis (Dyar 1929)
(Figs. 7–8, 10)
Diagnosis. Larva: Unknown. Pupa: Unknown. Adult: Male eye bridge divided by less than 1 facet diameter. Female eye bridge divided by nearly 2 facet diameters. Male ascoids: medial anterior branches with 6, and lateral anterior branches with 5 longitudinal veins. Male palpi with palpomere 2 slightly laterally expanded. Male terminalia: gonocoxites with a posteromedial lobe bearing 5 setiform sensilla; gonostyles tapering progressively from base to apex, not curved apically, with a bulge dorsobasally; bulge covered with setiform sensilla; aedeagus furcate apically; sternal bridge quadrate; ventral extensions of parameres sinuous; cercopods cylindrical, retinacula length greater than 1/2 length of cercopod. Female terminalia: hypovalvae digitiform, with apex rounded.
Description. Larva: Unknown.
Pupa: Unknown.
Adult Male (Figs. 7–8, 10): Measurements, (N = 2) head width 0.43 mm, head length 0.37 mm, wing length 1.67 mm (1.63–1.70), wing width 0.67 mm, palpomere proportion: 1–1.6–2.4–3.4. Eye bridge divided by less than 1 facet diameter. Frontal scar patch subquadrate anteriorly, bilobed posteriorly, with a median spur. Antennal flagellum typical of Eurygarka. Ascoids: medial anterior branches with 6, and lateral anterior branches with 5 longitudinal veins. Palpi with palpomere 2 slightly laterally expanded. Mouthparts slightly laterally compressed. Wing: radial and medial forks at same level, arising basal to apex of CuA2; base of M2 complete. Terminalia: gonocoxites with posteromedial lobe bearing 5 setiform sensilla; gonostyles tapering progressively from base to apex, not curved apically, with dorsobasally bulge covered with setiform sensilla. Aedeagus furcate apically; sternal bridge quadrate, with knob-like projections laterally; ventral extensions of parameres sinuous; cercopods cylindrical, retinacula length greater than 1/2 length of cercopod.
Adult Female: Eyebridge divided by 1 facet diameter. Frontal scar patch as in male. Antenna typical of Eurygarka. Palpi typical of Eurygarka. Mouthparts as in male. Wing venation as in male, but with 2 breaks at base of costa. Terminalia: Cerci as long as broad. Subgenital plate with hypovalvae digitiform, with apex rounded.
Type material. Holotype [adult male]: CUBA. Jaronú, 26.ix.1927, reared from snails, H. K. Plank. Type deposited at U.S. N.M.
Other Records. U.S.A. FLORIDA: Atlantic Beach, 1.v.1945, coll. A.E. Pritchard. ALABAMA: Auburn, 29.viii.1948, coll. J. Robinson.
Distribution. Known from two locations in the southeastern United States, and a single location in Cuba.
Remarks. Adults of E. helicis are unique among known species of Eurygarka, and can be readily distinguished by the divided eye bridge and shape of the gonostyles in the male and the shape of the subgenital plate in the female.
description: Published as part of Curler, Gregory R. & Moulton, John K., 2008, A review of the Nearctic species of the genus Eurygarka Quate (Diptera: Psychodidae), pp. 28-36 in Zootaxa 1740 on page 31, DOI: 10.5281/zenodo.181477