Protohermes basiflavus Yan

Liu, Xingyue, Hayashi, Fumio & Yang, Ding, 2007, Systematics of the Protohermes costalis species-group (Megaloptera: Corydalidae), Zootaxa 1439, pp. 1-46 : 18-19

Protohermes basiflavus Yan g

( Figs. 8 , 38–44 )

Protohermes basiflavus Yang et al., 2004 . Insects from Mt. Shiwandashan Area of Guangxi, p. 265. Type locality: Guangxi (Fangcheng, Napo).

Diagnosis. Head without any dark markings; pronotum with two large blackish vittae on each side; male ninth sternum with rather shallow trapezoidal posterior incision.

Body length 28–34 mm (male) and 45 mm (female); forewing length 45–48 mm (male) and 55 mm (female), hindwing length 40–43 mm (male) and 52 mm (female).

Head ( Fig. 38 ) yellowish brown, without post-ocular spine; vertex without markings. Compound eyes pale brown; ocelli yellow, darkly margined medially. Antennae dark, with yellow scapes and brown pedicel. Mouthparts yellow; mandible with distal half dark.

Prothorax yellow; pronotum ( Fig. 38 ) with two pairs of large blackish markings on each side. Meso- and metathorax yellowish brown, each with one pair of brownish markings laterally. Thoracic pilosity yellow, longer on meso- and metathorax. Legs yellow with dense, yellowish, short setae; tibiae and tarsi black, with narrow bases of fore and middle tarsi and basal 1/3 of hind tarsi yellowish brown; tarsal claws reddish brown. Forewings ( Fig. 8 ) pale smoky brown, with 1 large yellowish marking at base, 3–4 mostly connected yellowish markings at middle and 1 round yellowish marking on apical 1/3; costal cellules with distinct brown stripes. Hindwings much paler than forewings, respectively with 1 round yellowish marking at middle and apical 1/3. Veins dark except veins in yellowish markings yellow. Rs 10-branched, last branch trifurcate; 10– 11 crossveins between R1 and Rs; M1+2 6-branched, M3+4 4-branched; 1A 3-branched.

Abdomen pale brown with yellowish short setae. Male ninth tergum ( Fig. 39 ) subquadrate, with trapezoidal anterior margin and truncate or sightly incised posterior margin. Ninth sternum ( Fig. 40 ) broad with arched lateral margin, posterior margin with rather shallow trapezoidal incision, forming two blunt posterior processes; central portion apparently inflated. Ninth gonostylus ( Fig. 41 ) unguiform and slightly curved dorsomedially, sometimes with an additional dent near tip. Tenth tergum ( Figs. 39–40 ) short and subcylindrical, ventrally with one well developed tufted tubercle at posteromedial corner; posterolateral corner distinctly and acutely produced; tip slightly incised and densely setose. Tenth sternum ( Fig. 42 ) arched, anteriorly slightly elevated at middle; posterior incision extremely small and V-shaped, forming two papillated processes; lateral lobes digitiform and slightly incurved. Female eighth sternum ( Figs. 43–44 ) strongly sclerotized, subtriangular in lateral view, posterior margin distinctly elevated with distinct median incision, forming pair of obtuse processes; ninth segment ( Fig. 43 ) laterally inflated in one pair of large subquadrate sac-like lobes; ninth gonocoxite valvate and membranous with one digitiform process at tip; tenth tergum short, with posterior margin medially incised, leaving one subtriangular upper and one semicircular lower lobe.

Material examined. Holotype ɗ, CHINA: Guangxi, Fangcheng, Fulong, 500 m, 24–25.V.1999, Dajun Liu & Xuezhong Zhang ( IZCAS). Paratypes: Ψ, CHINA: same data as holotype ( IZCAS); ɗ, CHINA: Guangxi, Napo, Defu, 1350 m, 18.VI.2000, Jun Chen ( IZCAS); ɗ, CHINA: Guangxi, Napo, Beidou, 500 m, 22.VI.2000, Jun Chen ( IZCAS). ɗ, CHINA: Guangxi, Shiwandashan, 19.V. 2006, Kuiyan Zhang ( CAU); ɗ, CHINA: Yunnan, Funing, 800 m, 18.V.1979, Yaoxuan Yin ( CAU); ɗ, BURMA: Dawna, Sud-qst, 25.XI.1997, Fumio Hayashi ( CAU).

Distribution. Burma (Dawna); China (Guangxi, Yunnan).

Remarks. This species appears to be closely related to P. c o s t a l i s in having similar immaculate head and wing patterns, but can be easily separated by the rather shallow posterior incision of the male ninth sternum. In P. costalis , the posterior incision of the male ninth sternum is deep.

Figures

FIGURES 6 – 15. Habitus of the species in the P. costalis group. 6. P. acutatus sp. nov. (Holotype), male. 7. P. arunachalensis Ghosh, male. 8. P. basiflavus Yang (Holotype), male. 9. P. basimaculatus sp. nov. (Holotype), male. 10. P. c o s t a l i s (Walker), male. 11. P. disjunctus sp. nov. (Holotype), male. 12. P. fujianensis Yang & Yang (Holotype), male. 13. P. gutianensis Yang & Yang (Holotype), male. 14. P. hunanensis Yang & Yang (Holotype), male. 15. P. lii sp. nov. (Holotype), male. Scale bars = 5 mm.

FIGURES 38 – 44. Protohermes basiflavus Yang. 38. Male head and pronotum, dorsal view. 39. Male genitalia, dorsal view. 40. Male genitalia, ventral view. 41. Male ninth gonostylus, caudal view. 42. Male tenth sternum, ventral view. 43. Female genitalia, lateral view. 44. Female eighth sternum, ventral view. Scale lines = 1.0 mm.