Aerumnosa bituberculata, Vilkamaa & Rudzinski & Burdíková & Ševčík, 2018

Vilkamaa, Pekka, Rudzinski, Hans-Georg, Burdíková, Nikola & Ševčík, Jan, 2018, Phylogenetic position of Aerumnosa Mohrig (Diptera, Sciaridae) as revealed by multigene analysis, with the description of four new Oriental species, Zootaxa 4399 (2), pp. 248-260 : 252-253

Aerumnosa bituberculata sp. n.

( Fig. 2 A )

Material studied. Holotype male. INDIA, Arunachal Pradesh, Etalin , 700 m, 12–25.V.2012, L. Dembický (in MMBC) . Paratype. The same data as holotype (in MMBC) .

Description. Male. Head. Brown, antenna concolorouS with face, maxillary palpuS Very pale brown. Eye bridge 2– 3 facetS wide, medially conStricted. Face with 6–7 Setae. ClypeuS non-SetoSe. MouthpartS Strongly reduced. Maxillary palpuS with one Segment in two partS Separated by a Suture, baSal part (1St Segment) with 3–4 Sharp Setae and a Small dorSal patch of SenSilla, apical part (2nd Segment) with 8 Short truncate SenSilla. Antenna broken in the Specimen Studied. Body of 3rd antennal flagellomere 1.2x aS long aS wide, the longeSt Setae longer than the width of flagellomere, neck Shorter than broad. Thorax. UnicolorouS dark brown, Setae pale. Anterior pronotum with 6 Setae. ProepiSternum with 3 Setae. Scutellum with 4 moderately long and many Short Setae. Wing. FumoSe brown, frontally darker. Length 3.3 mm. Width/length 0.45. Anal lobe rather large. VeinS diStinct, eSpecially M and CuA. R1/R 1.0. c/ w 0.80 –0.85. bM much Shorter than r-m, StM longer than fork of M. StCuA aS long aS bM. R4+5 without Ventral Setae, M, CuA, bM and StCuA non-SetoSe, r-m with 4 Setae. Haltere pale brown, Stem Short. Legs. Brown. Coxal Setae pale. Tibiae without SpinoSe Setae. Fore tibial organ with large patch of dark Setae in Shallow depreSSion. Fore tibial Spur aS long aS tibial width. Abdomen. Brown, Setae dark, long and rather fine.

Hypopygium, Fig. 2 A . Brown, darker than abdomen, broad. Gonocoxa much Shorter than gonoStyluS. Gonocoxae fuSed, the intercoxal area long, baSomedially without intercoxal lobe but with a group of Setae; baSal Sclerotized rim of hypopygium extended apicad medially, Ventromedial margin of gonocoxa diStinct, of Shallow V-Shape, baSally with denSe and Short SetoSity, other partS of gonocoxa with SparSe SetoSity, Some Setae on the membrane, apicoVentral Seta poorly differentiated. GonoStyluS elongated, Subtriangular, Strongly impreSSed medially, with Short SetoSity, with large apical tooth with apical channel inSide; with a medial and a baSoVentral lobe, lobeS with 4–7 megaSetae, megaSetae Slightly curVed; with 2 long Setae apicad of the medial lobe. Tegmen longer than broad, narrowed towardS apex, apically hyalinouS, laterally Strongly Sclerotized, with two Subapical Sclerotized StripeS, aedeagal teeth Very Small, partly in groupS. Aedeagal apodeme long.

Female. Unknown.

Etymology. The name iS deriVed form the Latin wordS bi-, two, and tuberculum, Swelling, referring to the two lobeS of the gonoStyluS.

DNA sequences. DNA SequenceS of 16S, 18S, and 28S gene regionS taken from the holotype are depoSited in the GenBank. Their acceSSion numberS are proVided in Table 2.

Discussion. By itS tapering gonoStyluS towardS the apex, Aerumnosa bituberculata sp. n. reSembleS A. horrifica , but differS in haVing the apical tooth much Shorter, and in haVing two, not one, medial lobeS with megaSetae.

Figures

FIGURE 2. A, C. Hypopygium, ventral. B. Maxillary palpus, dorsolateral. A: Aerumnosa bituberculata sp. n. (paratype). B, C: A. gemmifera sp. n. (holotype). Scale for A 0.25 mm, for B 0.10 mm, forC 0.20 mm.