Neochauliodes, Van Der Weele

Liu, Xingyue & Hayashi, Fumio, 2019, A new species of the fishfly genus Neochauliodes van der Weele (Megaloptera Corydalidae) from India, Zootaxa 4652 (1), pp. 183-188 : 184

Key to species of Neochauliodes from India and adjacent regions in South Asia (Updated from the key in Liu et al. 2010c)

1. Posterior two branches of RP strongly curved posteriad ( Liu et al. 2010c: fig. 7).................. N. truncatus Kimmins

– All branches of RP without distinct curve or slightly curved posteriad ( Liu et al. 2010c: figs 1-6)...................... 2

2. Background of wings dark with several small transparent spots ( Liu et al. 2010c: fig. 4); female fused gonocoxites 8 with posterior margin acutely produced ( Liu et al. 2010c: fig. 24).................................. N. obscurus van der Weele

– Background of wings transparent with some dark markings; female fused gonocoxites 8 with roundly convex posterior margin................................................................................................. 3

3. Fore- and hindwings medially with a broad dark transverse band ( Liu et al. 2010c: fig. 6)....... N. subfasciatus (Westwood)

– Fore- and hindwings medially with one or more narrow dark transverse bands, or without dark transverse band........... 4

4. Male tergum 9 broadened ventrally, forming sinuate posterior margin in lateral view ( Liu et al. 2010c: figs 15, 20); lateral arms of male fused gonocoxites 10 fused with median plate not via a narrow bar ( Liu et al. 2010c: figs 14, 19); female gonocoxite 9 much shorter than ectoproct ( Liu et al. 2010c: figs 16, 21)..................................................... 5

– Male tergum 9 narrowed and produced posteroventrad ( Liu et al. 2010c: figs 8, 25, 30, 35); lateral arms of male fused gonocoxites 10 connected with median plate by a narrow bar ( Liu et al. 2010c: figs 9, 26, 31, 36); female gonocoxite 9 subequal in length to or slightly longer than ectoproct.................................................................. 6

5. Forewing with markings on proximal half of costal space punctuate and clearly isolated from each other ( Liu et al. 2010c: fig. 3); male ectoproct with distal-median surface rounded in dorsal view ( Liu et al. 2010c: fig. 18)................................................................................................ N. nepalensis Liu, Hayashi & Yang

– Forewing with markings on proximal half of costal space nearly rectangular ( Liu et al. 2010c: fig. 2); male ectoproct with distal-median surface angulate ( Liu et al. 2010c: fig. 13).................................. N. indicus (van der Weele)

6. Fore- and hindwings with distinct dark markings ( Figs 1–2 ); male ectoproct anteroventrally with a setose tubercular process ( Fig. 4 ); median plate of male fused gonocoxites 10 slightly bulged on apex ( Fig. 4 ).................... N. flinti sp. nov.

– Fore- and hindwings almost immaculate, only with a few indistinct markings; male ectoproct anteroventrally without any process; median plate of male fused gonocoxites 10 slightly narrowed on apex....................................... 7

7. Forewing length 28–34 mm in male and 38–40 mm in female; male fused gonocoxites 10 with median plate slightly broadened medially and laterally with a pair of elevated ridges in ventral view ( Liu et al. 2010c: fig. 9).......... N. fletcheri Kimmins

– Forewing length 27 mm in male and 29–33 mm in female; male fused gonocoxites 10 with median plate gradually narrowed posteriad and laterally without distinct ridges in ventral view ( Liu et al. 2010c: fig. 26)............... N. simplex (Walker)

Figures

FIGURES 1–2. Habitus images of Neochauliodes flinti sp. nov. 1. Holotype male; 2. Paratype female. Scale bars = 5.0 mm.

FIGURES 3–7. Neochauliodes flinti sp. nov. 3. Male genitalia, lateral view; 4. Male genitalia, with sternum 9 removed, ventral view; 5. Male ectoproct, dorsal view; 6. Female genitalia, lateral view; 7. Female fused gonocoxites 8, ventral view. cc: callus cercus; e: ectoproct; gs: gonostylus; gx: gonocoxite; S: sternum; T: tergum. Scale bars = 1.0 mm.