Pseudoaerumnosa awanensis, Vilkamaa & Halenius & Ševčík, 2019

Vilkamaa, Pekka, Halenius, Pentti & Ševčík, Jan, 2019, Review of Pseudoaerumnosa Rudzinski (Diptera, Sciaridae), with the description of twenty-four new species, Zootaxa 4656 (1), pp. 1-42 : 10-12

Pseudoaerumnosa awanensis sp. n.

Fig. 6 B

Material studied. Holotype male. MALAYSIA, Pahang, Genting Highlands, Awana Cable Car Route , Malaise trap, 10–22.III.1997, H. Hippa, M. Jaschhof & B. Viklund (in SMNH) . Paratype. MALAYSIA, same data as holotype, 1 male (in MZH) .

Description. Male. Head. Brown, antenna concolorous with face, maxillary palpus pale brown. Eye bridge 2–4 facets wide. Face with 4 long dark setae. Clypeus non-setose. Mouthparts strongly reduced. Maxillary palpus with one segment, with 2–3 pointed setae, with a large dorsal patch of sensilla. Antenna short, antennal flagellomeres laterally flattened, asymmetrical in relation to their necks, frontal part larger; densely setose, setae curved, body of 4th flagellomere 2x as long as wide, the longest setae much shorter than the width of the flagellomere, neck shorter than wide. Thorax. Brown and unicolorous; setae dark. Anterior pronotum with 2–3 setae. Proepisternum with 3–4 setae. Scutellum with 4 long and many short setae. Wing. Fumose. Length 2.2 mm. Width/length 0.50–0.55. Anal lobe moderate. Hind margin with dorsal setae only. Veins distinct. R1/R 2.20–2.50. c/w 0.65–0.75. bM longer than r-m, stM longer than M-fork, stCu 3x as long as bM. R1 joining c beyond base of M-fork. R1 with dorsal setae, bM, r-m and StCu non-setose. Haltere pale brown. Legs. Yellow. Fore tibial organ unmodified, with some fine setae. Fore tibial spur longer than the tibial width. Abdomen. Pale brown; setae long, dark, and robust. Hypopygium, Fig. 6 B . Brown, like the abdomen, broad; setae dark. Gonocoxa broad, longer than gonostylus. Gonocoxae fused, ventromedial margin distinct, intergonocoxal area broad and short, largely microtrichose, narrowly non-setose medially. Setosity of gonocoxa long and dense, shorter at medial margin. Apicomedial seta poorly differentiated. Gonostylus elongate, impressed dorso- and ventromedially, with short medial lobe, with long and narrow apical tooth with a small megaseta attached to its ventral side, with narrow megaseta subapically, with 2 robust and curved megasetae on the lobe, the apicalmost ventral, the basalmost dorsal, both with distinct basal bodies. Tegmen broader than long, smoothly curved apically and basolaterally, hyalinous, with tiny aedeagal teeth. Aedeagal apodeme distinct and long with short apical fork.

Female. Unknown.

Discussion. Pseudoaerumnosa awanensis sp. n. resembles P. clavidactyla sp. n. in having the gonostylar megasetae in a similar arrangement: with one slender subapical megaseta and two larger medial ones at different vertical levels, and in having a broad, smoothly curved tegmen. Pseudoaerumnosa awanensis differs from P. clavidactyla in having a shorter apical tooth of the gonostylus and in lacking a finger-like process on the tegmen.

Etymology. The species is named after the type locality Awana, Malaysia.

Figures

FIGURE 6. Hypopygium, ventral. A: Pseudoaerumnosa annae sp. n. (holotype). B: P. awanensis sp. n. (holotype). Scale 0.10 mm.