Nepaletricha

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

Key to the species of Nepaletricha

1 Tergite 9 dorsally at posterior margin with a pair of non-setose lobes. ........................... 2

– Tergite 9 dorsally at posterior margin with a pair, three, or two pairs of setose lobes, the setosity widely distributed on the lobes or represented by 3–4 apical megasetae. .......... 3

2 The lobes at the posterior margin of tergite 9 short, in dorsal or ventral view subquadrangular, as long as broad, scutum without acrostichal setae ( HIPPA et al. 2009: Figs 3 A, B ). ......................................................................... N. furcata Hippa, Chandler & Papp, 2009

– The lobes at the posterior margin of tergite 9 long, in dorsal or ventral view attenuating, more than twice longer than broad, scutum with acrostichal setae ( CHANDLER 2002: Fig. 55). ................................................................................... N. mystica Chandler, 2002

3 Tergite 9 with three setose lobes at the posterior margin, a strong dorsomedial one and a pair of weaker ones in a lateral position at the base of the former ( HIPPA et al. 2009: Figs 4 A,B ). ......................................................... N. montana Hippa, Chandler & Papp, 2009

– Tergite 9 with one or two pairs of setose lobes at posterior margin. ............................... 4

4 Tergite 9 with two pairs of setose lobes at the posterior margin ( Fig. 3A ), both lobes with a number of setae. ........................................................................... N. dembickyi sp. nov.

– Tergite 9 with one pair of lobes at the posterior margin, the lobes with 3–4 apical megasetae only. ........................................................................................................................ 5

5 The lobes at the posterior margin of tergite 9 short and robust, ca. 5 times longer than broad, with 4 apical megasetae, gonocoxa without a long sigmoid lobe posterodorsally ( Fig. 4 A ). ............................................................................................. N. lobosa sp. nov.

– The lobes at the posterior margin of tergite 9 long and slender, more than 10 times longer than broad, with 3 apical megasetae, gonocoxa with a long, sigmoid lobe posterodorsally ( Fig. 5C ). .............................................................................................. N. sigma sp. nov.

Figures

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. 4. Nepaletricha lobosa sp. nov. (holotype). A – Hypopygium, lateral view. B – Tergite 9 with associated parts, ventral view. C – Part of gonocoxa with associated parts, dorsal view. D – Aedeagus and tegmen, dorsal view. Scale 0.1 mm. 1 – tergite 9, 2 – apical megasetae of the lobe at the posterior margin of tergite 9, 3 – gonocoxa, 4 – gonocoxal lobe, 5 – gonocoxal apodeme, 6 – gonostylus, 7 – aedeagal apodemes, 8 – apex of aedeagus, 9 – lateral lobe of aedeagus, 10 – tegmen, 11 – lobe of tegmen, 12 – apodemes of tegmen (parameral apodeme), 13 – seta of cercus, 14 – seta of sternite 10.

Fig. 5. Nepaletricha sigma sp. nov. A – Tergite 9 with associated parts, lateral view (holotype). B – Tergite 9 with associated parts, ventral view. C – Gonocoxa with associated parts, lateral view. D – Abdominal segment 8, dorsal view. Scale 0.1 mm. 1 – posterodorsal sigmoid lobe of gonocoxa, 2 – posteroventral plate-like lobe of gonocoxa, 3 – gonocoxal apodeme, 4 – gonostylus, 5 – aedeagus + tegmen.