Nepaletricha dembickyi, Hippa & ŠEVýÍK, 2014

Hippa, Heikki & ŠEVýÍK, Jan, 2014, Notes on Nepaletricha (Diptera: Sciaroidea incertae sedis), with description of three new species from India and Vietnam, Acta Entomologica Musei Nationalis Pragae 54 (2), pp. 729-739 : 732-735

Nepaletricha dembickyi sp. nov.

( Figs 2A, 2D , 3A–C )

Type material. HOLOTYPE: J, NE INDIA: ARUNACHAL PRADESH: Hunli vicinity, 1300± 100m, 28°19´32´´N, 95°57’ 31´´E, 26.v.–1.vi.2012, L. Dembický leg., AP 4 / 2012, MZM Expedition ( MMBC).

Description. Male. Head. Distal part of antennae lost beyond flagellomere 9 or 11 in the single specimen. Colour of head brown, antenna slightly paler beyond the middle of flagello-

mere 1. Face with two setae medioventrally. Maxillary palpus, Fig. 2A,D : palpomere 2 with dome-like sensilla mesially on distal part, palpomere 3 with a patch of close to each other placed hyaline sensilla ventrolaterally. Antenna similar to N. montana ( HIPPA et al. 2009: Figs 1 B,E ): scapus with two setae, flagellomere 1 6.4 times longer than broad, flagellomere 4 3.4 times longer than broad. Thorax. Brown. Scutum with 8–10 lateral setae, ca. 10 dorsocentral setae and with 0 acrostichal setae, scutellum with 4 setae and prothoracic epimeron with 5 setae. Wing length 2.2 (2.5) mm. Legs. Femur, tibia and tarsus of leg 1 lost on both sides. Colour of the remaining parts brown. Coxae similar to N. furcata ( HIPPA et al. 2009: Fig. 1A ).

Wing. Similar to N. furcata ( HIPPA et al. 2009: Fig. 2B ): Sc setose dorsally, R and R 1 setose dorsally, R 1 distally setose on both sides, R 4+5 setose dorsally and ventrally, stM, M 1 and M 2 setose dorsally and ventrally, CuA 1 and CuA 2 setose dorsally and A 1 setose dorsally and ventrally; wing membrane setose dorsally and ventrally. Colour of wing and halter brownish.

Abdomen. Brown. Segment 8, Fig. 3C : note the totally non-setose sternite. Hypopygium, Figs 3A,B : Tergite 9 with two pairs of setose plate-like lobes posteriorly. Gonocoxa deeply cut into two large posterolateral setose lobes, the more dorsal one of these further bearing a curved posterodorsal lobe, a plate-like posteroventral lobe and a richly setose lobe on its mesial side, near the attachment of gonostylus. Gonostylus sickle-shaped with one long and a few shorter setae at apex (dorsal end). Aedeagus and parameres not seen in detail in the mount ( Fig. 3A ). Cerci large, roundish, with several long setae. Sternite 10 medially divided into two halves, with 1 long setae posteriorly on each half.

Female. Unknown.

Etymology. The species is named after Luboš Dembický, the collector of the type material of the present species and that of Nepaletricha sigma .

Discussion. Nepaletricha dembickyi sp. nov. is greatly similar to N. montana . Both differ from other Nepaletricha by having the lateral side of gonocoxa divided into a dorsal and ventral lobe by a very deep cleft so that the lobes are posteriorly only narrowly connected. Nepaletricha dembickyi is distinguished from N. montana by having two pairs of setose lobes at the posterior margin of tergite 9, in N. montana there is one setose medial lobe and a pair of inconspicuous setose lobes at its base. Further, N. dembickyi differs from N. montana by having the wing vein A 1 setose on both sides instead of being non-setose. Both the discussed species resemble N. mystica by having the palpomere 5 short, not much longer than palpomere 4.

Figures

Fig. 2. Maxillary palpus, dorsal view (A, B, C) and palpomere 3, ventral view (D). A, D – Nepaletricha dembickyi sp. nov. (holotype). B – N. sigma sp. nov. (holotype). C – N. lobosa sp. nov. (holotype). Scale 0.1 mm.

Fig. 3. Nepaeltricha dembickyi sp. nov.(holotype).A – Hypopygium, lateral view. B – Left side dorsal gonocoxal lobe with associated parts, lateral view. C – Abdominal segment 8, ventral view. Scale 0.1 mm. 1 – tergite 9, 2 – lobes at posterior margin of tergite 9, 3 – gonocoxa, 4 – posterodorsal lobe of gonocoxa, 5 – posteroventral lobe of gonocoxa, 6 – gonocoxal apodeme, 7 – gonostylus, 8 – setae of cercus, 9 – sternite 10, 10 – aedeagal apodemes, 11 – tegmen, 12 – sublobe on the mesial side of the larger dorsal gonocoxal lobe, 13 – tergite 8, 14 – sternite 8.

Fig. 1. Nepaletricha lobosa sp. nov. (paratype). Habitus.