Ptychoptera hekouensis Kang, Gao & Zhang, 2022

Kang, Zehui, Gao, Gang, Zhang, Xiao, Yang, Ding & Wang, Junping, 2022, Three new fold-winged crane flies of the genus Ptychoptera Meigen, 1803 (Diptera, Ptychopteridae) from southern China, ZooKeys 1122, pp. 159-172 : 159

Ptychoptera hekouensis Kang, Gao & Zhang sp. nov.

Figs 1a, b , 2a , 3a , 4a-c , 5a-c

Diagnosis.

Scutellum mostly brownish black, middle area yellow; wing marked with small brown marks at base of Rs, tip of R1, base of R2+3, fork of R4+5, r-m, and fork of M1+2; epandrial clasper tapering and slightly curved distally to the middle, inner side with two papillary projections; medial lobe of basal lobe of gonostylus ear-shaped.

Description.

Male. Body length 8.0 mm, wing length 9.0 mm.

Vertex and frons black; face and clypeus yellow with brown hairs; gena yellow with a black elliptical spot medially, hairs on gena dark brown; occiput yellow. Compound eyes black without pubescence. Scape, pedicel and basal 1/2 of 1st flagellomere yellow, remaining flagellomeres dark brown; hairs dark brown. Proboscis yellow with brown hairs. Palpus yellow with last segment gradually darked apically, hairs brown.

Thorax (Fig. 1a, b ). Pronotum and propleuron yellow. Prescutum mostly brownish black, anterior margin with lateral area yellow; scutum and paratergite mostly brownish black, posterior margin yellow; scutellum mostly brownish black, middle area yellow with a patch of dense brown hairs; postnotum yellow. Mesopleuron uniformly yellow. Coxae and trochanters yellow. Wing (Fig. 2a ) 3.3 times as long as wide, subhyaline, apical 1/2 slightly brown, marked with small brown marks at base of Rs, tip of R1, base of R2+3, fork of R4+5, r-m, and fork of M1+2. Veins brown; Sc ending in C exceeding basal 1/3 of R2+3; Rs straight, 4 times the length of r-m; r-m arise from Rs. Wing with setae below fold in cell cua2, and over tip 1/3 of wing. Halter and prehaltere pale yellow with brown hairs.

Abdomen. First tergum yellow with caudal 1/3 brownish black, 2nd tergum brownish black with middle area yellow, 3rd tergum yellow with caudal 1/3 brownish black, 4th tergum yellow with caudal 1/2 black, 5th to 7th terga black; first to 4th sterna yellow, 5th to 7th sterna black; hairs on abdomen yellow.

Male genitalia (Figs 3a , 4a-c , 5a-c ) black except caudal 1/2 of epandrial clasper brownish yellow. Epandrium (Fig. 4a ) bilobed, epandrial lobe narrow, epandrial clasper tapering and slightly curved distally to the middle, inner side with two papillary projections, with brown long hairs; epiproct V-shaped, with short hairs. Gonocoxite (Fig. 4b ) long and stout, 2 times as long as wide, basal apodeme small; apical process of paramere triangular, apex semilunar. Gonostylus (Fig. 4b ): anterior lobe of basal lobe of gonostylus elliptic with dense short hairs; medial lobe of basal lobe of gonostylus ear-shaped with dense short hairs; secondary lobe of apical stylus of gonostylus finger-shaped, slightly curved distally with several long hairs; tertiary lobe of apical stylus of gonostylus triangular, pointed apically; apical stylus of gonostylus finger-shaped, swollen distally with long hairs. Hypandrium (Fig. 4c ): basal division of hypandrium dumbbell-shaped basally with dense long hairs posteriorly; spathate lobe of hypandrium triangular with several long hairs; lateral extension of terminal division of hypandrium elliptic with dense long hairs on posterior 1/2; terminal division of hypandrium papillary. Aedeagus (Fig. 5a-c ): subapical sclerite tongue-shaped, apex of subapical sclerite round; aedeagal sclerites with apex laterally compressed, with dorsal corner extended dorsoanterior, curved sided and convergent; lateral ejaculatory processes with base narrow, extended anterolaterally; sperm sac subspherical; ejaculatory apodeme flag-like, closely associated with aedeagal sclerites, larger than sperm sac, paralleling anterior margin of sperm sac.

Female. Unknown.

Material examined.

China · 1♂, holotype; Yunnan Province, Hekou District, Nanxi Town ; 132 m; 22 May 2009; T. Zhang leg.; CAU · 1♂, paratype; same collection data as holotype; CAU .

Distribution.

China (Yunnan).

Etymology.

Specific name Ptychoptera hekouensis (adjective, feminine) referring to the type locality, Hekou.

Remarks.

This new species is similar to P. wangae from China but can be separated from the latter by the scutellum mostly brownish black with middle area yellow, the 2nd tergum mostly brownish black with middle area yellow, the epandrial clasper with two papillary projections on inner side, and the medial lobe of basal lobe of gonostylus ear-shaped. In P. wangae , the scutellum is uniformly yellow brown, the 2nd tergum is mostly yellow with posterior margin brown, the epandrial clasper does not have papillary projection on inner side, and the medial lobe of basal lobe of gonostylus is semicircular ( Kang et al. 2013).

Figures

Figure 1. Thoraxes of new Ptychoptera species a P. hekouensis, dorsal view b P. hekouensis, lateral view c P. longa, dorsal view d P. longa, lateral view e P. xiaohuangshana, dorsal view f P. xiaohuangshana, lateral view. Scale bars: 0.5 mm.

Figure 2. Wings of new Ptychoptera species a P. hekouensis b P. longa c P. xiaohuangshana. Scale bars: 1.0 mm.

Figure 3. Male genitalia of new Ptychoptera species a P. hekouensis b P. longa c P. xiaohuangshana. Scale bars: 0.5 mm. (ECP = epandrial clasper, EL = epandrial lobe, GCT = gonocoxite, GST = gonostylus, HYPD = hypandrium).

Figure 4. Details of male genitalia of new Ptychoptera species a epandrium of P. hekouensis, dorsal view b gonocoxite and gonostylus of P. hekouensis, dorsal view c hypandrium of P. hekouensis, ventral view d epandrium of P. longa, dorsal view e gonocoxite and gonostylus of P. longa, dorsal view f hypandrium of P. longa, ventral view g epandrium of P. xiaohuangshana, dorsal view h gonocoxite and gonostylus of P. xiaohuangshana, dorsal view i hypandrium of P. xiaohuangshana, ventral view. Scale bars: 0.4 mm. (ECP = epandrial clasper, EL = epandrial lobe, EPI = epiproct, GAS = apical stylus of gonostylus, GBA = anterior lobe of basal lobe of gonostylus, GBL = basal lobe of gonostylus, GBM = medial lobe of basal lobe of gonostylus, GCT = gonocoxite, GSL = secondary lobe of apical stylus of gonostylus, GAT = tertiary lobe of apical stylus of gonostylus, HBD = basal division of hypandrium, HMW = membranous window of terminal division of hypandrium, HSL = spathate lobe of hypandrium, HTD = terminal division of hypandrium, HTE = lateral extension of terminal division of hypandrium, PPA = apical process of paramere).

Figure 5. Aedeagi of new Ptychoptera species a P. hekouensis, dorsal view b P. hekouensis, lateral view c P. hekouensis, ventral view d P. longa, dorsal view e P. longa, lateral view f P. longa, ventral view g P. xiaohuangshana, dorsal view h P. xiaohuangshana, lateral view i P. xiaohuangshana, ventral view. Scale bars: 0.2 mm. (AEA = ejaculatory apodeme, AES = aedeagal sclerite, ALP = lateral ejaculatory process, AS = sperm sac, ASA = subapical sclerite of aedeagus).