Pseudoaerumnosa banari, 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 : 12-14

Pseudoaerumnosa banari sp. n.

Figs 2 A , 4 A , 7 A

Material studied. Holotype male. MADAGASCAR, Montagne d’Ambre , 1035 m, close to camp, dark forest, Malaise trap, 10–19.I.2016, P. Baňař (in MMBC) . Paratypes. MADAGASCAR, same data as holotype, 3 males (in MMBC, JSL-OUC and MZH) .

DNA sequences. The DNA sequences of COI barcode region taken from two paratypes are deposited in Gen- Bank. The Accession Numbers are provided in Table 1 .

Description. Male. Head. Brown, antenna concolorous with face, maxillary palpus pale brown. Eye bridge 2–3 facets wide. Face with 14–23 dark long setae. Clypeus non-setose. Mouthparts strongly reduced. Maxillary palpus with one segment, with 3–5 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 1.7–2.1x 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 2–4 setae. Proepisternum with 6–8 setae. Scutellum with rather similar, rather short setae. Wing, Figs 2 A , 4 A . Fumose. Length 2.7–3.0 mm. Width/length 0.45–0.50. Anal lobe small. Hind margin with dorsal and ventral setae. Veins distinct. R1/R 1.85–2.0. c/w 0.60–0.75. bM shorter than r-m, stM longer than M-fork, stCu longer than bM. R1 joining c beyond base of Mfork. 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. Brown; setae long, dark, and robust. Hypopygium, Fig. 7 A . Brown, like the abdomen, broad; setae dark. Gonocoxa broad, as long as gonostylus. Gonocoxae fused, ventromedial margin distinct, intergonocoxal area broad and short, microtrichose, setose medially. Setosity of gonocoxa long and dense. Apicomedial seta poorly differentiated. Gonostylus slightly elongated, rather tumid, strongly impressed dorso- and ventromedially, with indistinct medial lobe, with long and curved apical tooth with a small megaseta attached to its ventral side, with 1 subapical megasetae near the base of the tooth, and 7–8 on the ventral lobe, the megasetae slender, pointed and hyalinous, slightly curved. Tegmen subtriangular, broader than long, slightly curved sub-basally, hyalinous but weakly sclerotized basolaterally, with tiny aedeagal teeth. Aedeagal apodeme distinct and long, with robust apical fork.

Female. Unknown.

Discussion. Pseudoaerumnosa banari sp. n. differs from all other congeneric species in having a nearly triangular tegmen and a wide gonostylus with an indistinct medial lobe bearing pointed megasetae, the basalmost of which are shortest. Furthermore, P. banari sp. n. is distinguished by being dark and large.

Etymology. The species is named after Petr Baňař (Moravian Museum, Brno, Czech Republic), who collected the type material.

Pseudoaerumnosa clavidactyla sp. n.

Fig 1 B, C , 7 B , 11 A

Material studied. Holotype male. MALAYSIA, Sabah, Danum Valley , 5°01’N, 117°47’E, 150 m, Malaise trap, 1–12.X.1987, A.H. Kirk-Spriggs (in NMWC) . Paratypes. MALAYSIA, same data as holotype but 5–10.IX.1987 ,

3 males (2 in NMWC, 1 in MZH); same data as previous but 260 m, 6–12.IX.1987 , 1 male (in MZH); same data as previous but 150 m, 16–24.IX.1987 , 2 males (in NMWC); same data but 260 m, 17–24.IX.1987 , 2 males (in MZH); same data but 150 m, 24.IX–1.X.1987 , 1 male (in NMWC); Sabah, Danum Valley , primary forest, fallen tree, 29.X–2.XI.1986 , P. Eggleton, 2 males (in BMNH); Sabah, Mainline West , 100 m, Malaise trap, 28.IX–14.X.1987 , A.H. Kirk-Spriggs, 6 males (3 in NMWC, 3 in MZH) .

Description. Male. Head. Brown, antenna concolorous with face, maxillary palpus pale brown. Eye bridge 1–3 facets wide. Face with 4–8 long dark setae (or non-setose). Clypeus non-setose. Mouthparts strongly reduced. Maxillary palpus with one segment, with 1–3 pointed setae, with a large dorsal patch of sensilla. Antenna ( Fig. 1 B, C ) short, antennal flagellomeres laterally flattened, asymmetrical in relation to their necks, frontal part larger; densely setose, setae curved, body of 4th flagellomere 1.6–1.9x 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 2–5 setae. Proepisternum with 1–4 setae. Scutellum with 4 long and many short setae. Wing. Fumose. Length 1.5–1.7 mm. Width/length 0.50–0.55. Anal lobe rather large. Hind margin with dorsal setae only. Veins distinct. R1/R 1.7–2.65. c/w 0.65–0.85 bM longer or as long as r-m, stM longer or shorter than M-fork. stCu much longer than bM. R5 joining c at about 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 long, dark, and robust. Hypopygium, Figs 7 B , 11 A . Brown, like the abdomen, broad. Gonocoxa slightly longer than gonostylus. Gonocoxae fused, intergonocoxal area broad and short, microtrichose, narrowly non-setose medially, ventromedial margin roundish and basally distinct. Setosity of gonocoxa long and dense, shorter at medial margin. Apicomedial seta poorly differentiated. Gonostylus elongated, impressed dorso- and ventromedially, with short medial lobe, with long and narrow apical tooth with a small megaseta attached to its ventral side, with a narrow megaseta subapically, with 2 megasetae on the lobe, the apicalmost ventral, the basalmost dorsal, the latter megasetae robust and curved, with distinct basal bodies. Tegmen broader than long, roundishly curved laterally, hyalinous but sclerotized basolaterally, with a sclerotized apical rim, with an apicodorsal finger-like projection, with tiny aedeagal teeth. Aedeagal apodeme narrow, with distinct apical fork.

Female. Unknown.

Discussion. In having an apical finger-like process of tegmen, Pseudoaerumnosa clavidactyla sp. n. resembles P. cryptoloba sp. n. and P. eminula sp. n. but differs in having the process long and club-like, not short and only slightly broadened towards apex. By its gonostylus, P. clavidactyla resembles P. awanensis sp. n., see above.

Etymology. The name is derived from the Latin words clavus, club, and dactylus, finger, referring to the apically widened finger-like projection of the tegmen.

Figures

FIGURE 1. A. Apical part of fore tibia, prolateral. B. 4 th antennal flagellomere, frontal. C. 4th antennal flagellomere, lateral. A: Pseudoaerumnosa obovata sp. n. (paratype from Ladan). B, C: P. clavidactyla sp. n. (paratypes from Danum Valley). Scale 0.10 mm.

FIGURE 2. Wing, dorsal.A: Pseudoaerumnosa banari sp. n. (paratype). B: P. eminula sp. n. (paratype from Ulu Temburong). C: P. fragilis sp. n. (holotype). D: P. tenuidens sp. n. (holotype). E: P. consuota sp. n. (paratype). F: P. junciseta sp. n. (paratype). Scale 1.0 mm.

FIGURE 4. Intergonocoxal area, ventral. A: Pseudoaerumnosa banari sp. n. (holotype). B: P. consuota sp. n. (holotype). C: P. fragilis sp. n. (holotype). D: P. tenuidens sp. n. (paratype from Sabah, Mainline West). Scale 0.10 mm.

FIGURE 7. Hypopygium, ventral. A: Pseudoaerumnosa banari sp. n. (holotype). B: P. clavidactyla sp. n. (holotype). Scale 0.10 mm.

FIGURE 11. Gonostylus, ventral. A: Pseudoaerumnosa clavidactyla sp. n. (holotype). B: P. collicola sp. n. (paratype). C: P. cryptoloba sp. n. (holotype). D: P. eminula sp. n. (paratype from Ulu Temburong). Scale 0.10 mm.