Neochauliodes bowringi

Tu, Yuezheng & Liu, Xingyue, 2021, A new species of the fishfly genus Neochauliodes van der Weele discovered from southwestern China through an integrative approach based on morphological and molecular evidence (Megaloptera: Corydalidae: Chauliodinae), Zootaxa 5016 (2), pp. 196-204 : 199

Key to species of the Neochauliodes bowringi species-group based on male characters

(Updated from the Key in Jiang et al. 2012)

1. Gonocoxite 10 laterally strongly broadened, sometimes bearing a pair of broad subapical processes ( Figs. 3A, C, E )....... 2

- Gonocoxite 10 laterally not or only slightly widened, without subapical processes ( Figs. 3B, D, F )..................... 3

2. Gonocoxite 10 rather narrow in ventral view ( Jiang et al. 2012: Fig. 9), apex strongly curved dorsad, laterally strongly broadened, ovoid, in lateral view ( Fig. 3A )................................................... N. bowringi (McLachlan)

- Gonocoxite 10 with median plate relatively broad in ventral view ( Fig. 2B ), apex straight, directed posteriad, subapical processes subtriangular in lateral view ( Fig. 3E ).............................................. N. triangulatus sp. nov.

3. Ectoproct subquadrate in lateral view ( Jiang et al. 2012: Fig. 3 ); gonocoxite 10 blade-shaped in ventral view, with apex strongly produced ( Fig. 2B ; Jiang et al. 2012: Figs. 8, 9, 11).......................................................... 4

- Ectoproct subtrapezoidal in lateral view ( Jiang et al. 2012: Fig. 5); gonocoxite 10 tongue-shaped in ventral view, with apex rounded or truncate ( Jiang et al. 2012: Figs. 7, 10)........................................................... 5

4. Forewing with dark spots on proximal half fused with adjacent ones ( Jiang et al. 2012: Fig. 2 ); gonocoxite 10 elongated and relatively narrow in ventral view ( Jiang et al. 2012: Fig. 8)........................... N. guixianus Jiang, Wang & Liu

- Forewing with dark spots on proximal half separated from each other ( Liu & Yang 2006: Fig. 4 ); gonocoxite 10 relatively short and broad ( Jiang et al. 2012: Fig. 11)............................................... N. tonkinensis (van der Weele)

5. Ectoproct with oblique dorsal margin in lateral view ( Jiang et al. 2012: Fig. 3 ); gonocoxite 10 with median plate rather narrow and feebly broadened at middle in ventral view ( Jiang et al. 2012: Fig. 7)............. N. cambodianus Jiang, Wang & Liu

- Ectoproct with oblique ventral margin in lateral view ( Liu & Yang 2006: Fig. 14); gonocoxite 10 with median plate rather broad and not broadened at middle in ventral view ( Jiang et al. 2012: Fig. 10)........................... N. moriutii Asahina

Figures

FIGURE 2. Neochauliodes triangulatus sp. nov., line drawing of male genitalia.A. Genitalia, lateral view; B. Ectoproct, dorsal view; C. Gonocoxite 10, ventral view. cc: callus cercus; e: ectoproct; gx: gonocoxite; S: sternum; T: tergum. Arrow indicates subapical processes of gonocoxite 10. Scale bar = 1 mm.

FIGURE 3. Male gonocoxite 10 of Neochauliodes spp., lateral view. A. N. bowringi (McLachlan); B. N. moriutii Asahina; C. N. umbratus Kimmins; D. N. tonkinensis (van der Weele); E. N. triangulatus sp. nov.; F. N. guixianus Jiang, Wang & Liu. Scale bar = 1 mm.

FIGURE 4. Interspecific phylogeny of the Neochauliodes bowringi species-group based on a concatenated dataset. Numbers at nodes are Bayesian posterior probabilities (left) and maximum likelihood bootstrap values (right). “-” at nodes indicate inconsistency in the topologies from the two methods.