Protohermes flavinervus, Liu & Hayashi & Yang, 2009

Liu, Xingyue, Hayashi, Fumio & Yang, Ding, 2009, Systematics of the Protohermes parcus species group (Megaloptera: Corydalidae), with notes on its phylogeny and biogeography, Journal of Natural History 43 (5 - 6), pp. 355-372 : 361-363

Protohermes flavinervus sp. nov.

( Figures 2 , 12–17 )

Etymology

The specific epithet ‘‘ flavinervus ’’ refers to the bright yellow longitudinal veins on the proximal three-quarters of the forewings.

Diagnosis

Head without any markings; pronotum with a pair of black vittae; male ninth sternum medially with a deep longitudinal incision; male tenth tergum with distal half curved inward; male tenth sternum with subuliform lateral lobes.

Type materials

Holotype: male, CHINA, Yunnan, Gongshan, Dulongjiang, Kongdang , 27 ° 529N, 98 ° 209E, 1500 m, 21 May 2007, leg. X.Y. Liu ( CAU) . Paratypes: one male and one female, same data as holotype ( CAU); one male and one female, CHINA, Yunnan, Gongshan, Dulongjiang, Kongdang , 1500 m, 22.V.2007, leg. X.Y. Liu ( CAU) .

Male

Body length 34–39 mm; forewing length 41–45 mm, hindwing length 37–39 mm.

Head. Yellow without any markings; post-ocular spine short. Compound eyes grayish brown; ocelli yellow, medially margined black. Antennae black, with scape and pedicel yellow. Mouthparts yellow; mandible with distal half reddish brown; maxillary and labial palpi with distal two segments brownish.

Prothorax. Yellow; pronotum with a pair of black vittae near lateral margins. Meso- and metathorax pale yellow, each notum with a pair of brownish spots on lateral margins. Thoracic pilosity yellow, much longer on meso- and metathorax. Legs yellow with yellowish short dense setae; tarsal claws reddish brown. Wings hyaline, immaculate; veins mostly pale yellow except for crossveins, usually brownish or blackish; longitudinal veins of forewing bright yellow on proximal three-quarters, except for proximal 1A and 2A blackish. Rs mostly eight-branched, last branch bifurcate or trifurcate; 12–15 crossveins between R 1 and Rs; M 1+2 three- to fivebranched (mostly four-branched), M 3+4 one- to three-branched (mostly twobranched); 1A three-branched.

Abdomen. Reddish brown with yellow venter. Ninth tergum ( Figure 13 ) broad, nearly hexagonal, with a subtrapezoidal anterior incision. Ninth sternum ( Figure 14 ) broadly subquadrate with lateral margins nearly parallel, posterolateral corners moderately pointed, posterior margin medially with a shallowly arched incision, median portion with a deep longitudinal incision. Ninth gonostylus unguiform, about 0.5 times as long as ninth tergum, with tip feebly incurved. Tenth tergum ( Figures 13–14 ) flattened, slightly shorter than ninth tergum, arcuately curved medially, with rounded apex. Tenth sternum ( Figure 15 ) extremely small, dorsomedial process moderately developed; lateral lobes shortly subuliform.

Female

Body length 40–42 mm; forewing length 56–58 mm, hindwing length 50–51 mm. Abdomen. Eighth sternum ( Figures 16–17 ) broad, subtriangular in lateral view, with posterior margin feebly incised medially in ventral view. Ninth gonocoxite broad, posterior portion rounded and slightly incised ventrad, with a small digitiform gonostylus at tip. Tenth tergum short, with posterior margin medially incised, leaving thick, rounded dorsal, and short, semicircular ventral lobes.

Distribution

China (Yunnan).

Remarks

The new species appears to be closely related to P. subparcus in having the similar distinct prothoracic markings and the subuliform lateral lobes of the male tenth sternum, but it can be easily separated from P. subparcus by the pronotum with the black vittae not separated and by the male tenth tergum with distal half arcuately incurved. In P. subparcus , the posterior portions of the prothoracic markings are narrowed and separated into two slender vittae, and the male tenth tergum is straightly directed.

Figures

Figures 1–5. Habitus photographs of the species in P. parcus group. (1) Protohermes congruens sp. nov., male holotype; (2) Protohermes flavinervus sp. nov., male holotype; (3) Protohermes parcus Yang and Yang, male holotype; (4) Protohermes pennyi sp. nov., male holotype; (5) Protohermes subparcus Liu and Yang, male holotype.

Figures 12–17. Protohermes flavinervus sp. nov. (12) Male head and prothorax, dorsal; (13) male genitalia, dorsal view; (14) male genitalia, ventral view; (15) male tenth sternum, ventral view; (16) female abdominal apex, lateral view; (17) female eighth sternum, ventral view.Notes: Li, longitudinal incision. Scale bars: 1 mm.