Pseudoaerumnosa filispicata, 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 : 24

Pseudoaerumnosa filispicata sp. n.

Fig. 12 B

Material studied. Holotype male. PHILIPPINES, Mindanao, Davao City Prov., Mt. Malambo , Busay resort, 1200 m, 7°28’83’’N, 125°15’43’’E, 15–28.II.2017, Damaška, Hiřman, Šípek & Vondráček (in NMPC).

Description. Male. Head. Brown, antenna concolorous with face, maxillary palpus pale brown. Eye bridge 3 facets wide. Face with 6 dark long setae. Clypeus non-setose. Mouthparts strongly reduced. Maxillary palpus with one segment, with 5 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 1.4x 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 3 setae. Proepisternum with 3 setae. Scutellum with 2 long and many short setae. Wing. Fumose. Length 2.6 mm. Width/length 0.50. Anal lobe moderate. Hind margin with dorsal setae only. Veins distinct. R1/R 1.50. c/w 0.85. bM, r-m and stCu subequal in length, stM longer than M-fork. R1 joining c before base of M-fork. R1 with dorsal and ventral 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 dark, long and robust. Hypopygium, Fig. 12 B . Brown, like the abdomen, broad; setae dark. Gonocoxa broad, longer than gonostylus. Gonocoxae fused, ventromedial margin distinct, intergonocoxal area broad and moderate, sparsely microtrichose, broadly non-setose medially. Setosity of gonocoxa dense, shorter at medial margin. Apicomedial seta well differentiated. Gonostylus elongated, evenly broad, slightly narrowed apically, impressed, with small apical tooth with a small megaseta attached to its ventral side, with some elongated subapical setae and 6 subapical-medial megasetae, the megasetae slender, short and hyalinous, curved. Tegmen semicircular, hyalinous but weakly sclerotized basolaterally, with tiny aedeagal teeth. Aedeagal apodeme indistinct and short with robust apical fork.

Female. Unknown.

Discussion. Pseudoaerumnosa filispicata sp. n. resembles P. pilicaudata sp. n. in having a broad gonocoxa, an evenly wide gonostylus with a tumid apex and a small apical tooth of the gonostylus. Pseudoaerumnosa filispicata differs in having an apically and laterally roundish tegmen and a more slender gonostylus with some distinct pointed subapical setae.

Etymology. The name is derived from the Latin words filum, thread, and spica, point, referring to the pointed setae on the gonostylus.

Figures

FIGURE 12. Hypopygium, ventral. A: Pseudoaerumnosa exacuta sp. n. (holotype). B: P. filispicata sp. n. (holotype). Scale 0.10 mm.