Cerapanorpa baimaensis, Gao & Hua, 2019

Gao, Kai & Hua, Bao-Zhen, 2019, Revision of the genus Cerapanorpa (Mecoptera: Panorpidae) with descriptions of four new species, European Journal of Taxonomy 537, pp. 1-23 : 8-11

Cerapanorpa baimaensis sp. nov.

urn:lsid:zoobank.org:act:262BA55A-63F2-49E7-85DD-BDE0CE2C1F25

Figs 5–6

Diagnosis

The new species can be easily separated from its congeners by the following combination of features: rostrum uniformly darkish brown ( Fig. 5C ); parameres with dense long spines along inner margin, somewhat curved medially, exceeding apex of gonocoxites ( Fig. 6A, D ); female main plate flat and intensely broaden in basal half; ventral basal plates translucent and ridgy at medial base, covering twothirds of the main plate; axis short, slightly extending beyond the main plate ( Fig. 6 F–G).

Etymology

The specific name refers to the type locality, Baima Town.

Type material

Holotype

CHINA • ♂; Sichuan Province, Pingwu County, Baima Town ; 32°44′09′′ N, 104°18′48′′ E; 2000–2200 m a.s.l.; 23 Jul. 2017; Kai Gao & Yuan Hua leg.; NWAU.

Paratypes

CHINA • 1 ♂, 2 ♀♀; same collection data as for holotype; 5 Jun. 2018; Kai Gao & Yu-Ru Yang leg.; NWAU .

Description

Male

HEAD. Frons, vertex and occiput black. Rostrum uniformly darkish brown, mandibles brown; Maxillary and labial palpi brownish and darkening towards apex ( Fig. 5C ). Antennae black, with 40–43 segments. THORAX. Pronotum black, with 8–12 stout setae along anterior margin. Meso- and metanotum entirely black ( Fig. 5D ). Pleura light ivory. Legs pale yellow, with distal tarsomere blackish. Forewing length 13.9– 14.7 mm, width 3.4–3.8 mm. Wing membrane hyaline, only with significantly degenerated pterostigmal band; Hindwing length 12.5–13.8 mm, width 3.3–3.6 mm, similar to forewing in markings ( Fig. 5A ).

ABDOMEN. A1–A5 terga and sterna black. Notal organ on T3 not prominent, a hook-shaped postnotal organ on T4 projecting forward. A6 mostly black, with a yellow finger-like anal horn on its posterior margin. A7 and A8 yellowish brown and elongate; A7 with a narrow groove at base, slightly constricted at basal half and slightly wider toward apices. A8 as long as A7, gradually thickening apically ( Fig. 5E ).

GENITALIA. Genital bulb elliptical and yellowish brown ( Fig. 6 A–D). Epandrium with a deep U-shaped terminal emargination between two finger-like setose lobes, bearing long bristles on distal portion ( Fig. 6C ). Hypovalves slender, bearing neat and dense bristles along inner margin ( Fig. 6A ). Gonocoxite with two small protuberances on ventral submedian margin. Gonostylus much shorter than gonocoxite, with an indistinct middle tooth and a large basal process ( Fig. 6A, D ). Parameres somewhat curved medially, bearing dense long spines along inner margin, slightly exceeding apex of gonocoxite ( Fig. 6D ). Dorsal valves of aedeagus elongate and curved apically, reaching distal border of gonocoxite; ventral valves membranous, weakly developed; lateral process small, from base of dorsal valves ( Fig. 6E ).

Female

HEAD, THORAX AND ABDOMEN. Similar to males in coloration. Forewing length 13.5–15.4 mm, width 3.5–3.9 mm, similar to male in coloration and wing patterns; hindwing length 13.3–15.0 mm, width 3.3–3.6 mm, similar to forewing ( Fig. 5B ).

GENITALIA. Subgenital plate elliptical, shallowly emarginate terminally, bearing long setae on distal portion ( Fig. 6H ). Medigynium small and weakly sclerotized; main plate flat, intensely broadened in basal half ( Fig. 6G ). Paired posterior arms gradually tapering apically, approximately forming a quadrate emargination ( Fig. 6 F–G). Ventral basal plates translucent and ridgy at medial base, covering two-thirds of the main plate ( Fig. 6F ). Paired dorsal basal plates reniform and membranous ( Fig. 6G ). Axis short and poorly developed, extending slightly beyond the main plate ( Fig. 6 F–G).

Distribution

Sichuan Province, China.

Remarks

Cerapanorpa baimaensis sp. nov. resembles C. byersi (Hua & Li, 2007) and C. centralis (Tjeder, 1936) in appearance, but can be easily identified by the specific shape of the male paramere and aedeagus, especially the ridgy ventral basal plates of medigynium in female.

Figures

Fig. 5. Adults of Cerapanorpa baimaensis sp. nov. A. Male habitus in dorsal view. B. Female habitus in dorsal view. C. Male head in frontal view. D. Dorsum of male. E. Male abdomen in lateral view. Abbreviations: ah = anal horn; ms = mesonotum; mt = metanotum; no = notal organ; pno = postnotal organ; pr = pronotum. Scale bars: A–B = 5 mm; C = 0.5 mm; D–E = 1 mm.

Fig. 6. Genitalia of Cerapanorpa baimaensis sp. nov. A–C. Male genital bulb in ventral, lateral, and dorsal views. D. Male genital bulb with hypandrium removed in ventral view. E. Aedeagus in ventral view. F–G. Female medigynium in ventral and dorsal views. H. Female subgenital plate in ventral view. Abbreviations: ax = axis; ce = cercus; dbp = dorsal basal plate; dv = dorsal valve; ep = epandrium; gcx = gonocoxite; gs = gonostylus; hv = hypovalve; lp = lateral process; mp = main plate; pa = posterior arm; pm = paramere; vbp = ventral basal plate; vv = ventral valve. Scale bars: 0.2 mm.