Bradysia calicula, Vilkamaa & Suuronen, 2019

Vilkamaa, Pekka & Suuronen, Anna, 2019, Definition of the Bradysia luctifica group (Diptera, Sciaridae), with the description of five new species, Zootaxa 4576 (1), pp. 151-161 : 156-157

Bradysia calicula sp. n.

Fig. 4

Material studied. Holotype male. MALAYSIA, Sabah, Danum Valley , 5°01’N, 117°47’E, lowland mixed dipterocarp forest, Malaise trap, 24.IX–12.X.1987, A.H. Kirk-Spriggs ( NMW Sabah (Borneo) Expedition, NMW.Z.1987.094) (in NMWC).

Description. Male. Head. Face and antenna concolorous pale brown, maxillary palpus pale brown. Eye bridge 2–3 facets wide. Face with 6 short and fine setae. Clypeus with 2 setae. Maxillary palpus with 3 segments; 1 st segment normal, longer than 3 rd segment, 2 nd segment shortes; 1 st segment with 6/7 setae, with indisinctly demarcated dorsal patch of sensilla; surface of antennal flagellomeres smooth, densely setose, body of 4 th flagellomere 1.95x as long as wide, the neck shorter than wide, the longest setae shorter than the width of flagellomere. Thorax. Brown, setae dark. Anterior pronotum with 5 setae. Proepisternum with 2 setae. Setae of scutellum not well detectable in the specimen studied. W ing. Fumose. Length 2.1 mm. Width/length 0.40. Anal lobe moderate. Veins distinct. stM equally long as fork of M. R1/R 0.65. c/ w 0.85. r-m and bM nearly equal in length, both non-setose. Halter yellow, short. Legs. Coxae brown, as thorax. Coxal setae dark. Tibiae and tarsi pale brown. Fore tibiae missing in the specimen studied. Claws without teeth. Abdomen. Brown, slightly paler than thorax, setae dark, rather fine and long. Hypopygium ( Fig. 4 ). Brown, concolorous with abdomen. Intergonocoxal area moderate. Gonocoxae broad, laterally roundish, basally united (U-shaped), much longer than gonostylus, with long setosity, medial margin distinct, slightly sclerotized, sparsely setose, membraneous part with short setae, with areas of microtrichia. Gonostylus strongly narrowed towards apex, strongly curved, richly setose, apex with numerous spine-like setae, with some strong ventral spine-like setae, without apical tooth. Tegmen laterally with membraneous curvature, with strong medial sclerotized structures, dorsally with short hyalinous apical part, with strongly sclerotized, nearly perpendicular basal apodemes, with a large area of strong aedeagal teeth. Aedeagal apodeme moderate.

Discussion. Bradysia calicula sp. n. is most similar to B. luctifica in having a rather similar gonostylus and a long maxillary palpus but differs in having its tegmen more strongly narrowed towards apex, broader gonocoxae with more roundish medial margins and the tegmen with membraneous lateral curvature, stronger sclerotizations and a shorter hyalinous apical process.

Etymology. The name is Latin, calicula , cup, referring to the cup-shaped hypopygium of the species.

Figures

FIGURE 4. Bradysia calicula sp. n. (holotype). Part of hypopygium, ventral. Scale 0.10 mm.