Ptychoptera longa 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 longa Kang, Gao & Zhang sp. nov.

Figs 1c, d , 2b , 3b , 4d-f , 5d-f

Diagnosis.

Mesopleuron mostly brown, except upper 1/2 of anepisternum yellow; wing marked with four brown marks and one brown band; epandrium not bilobed, epandrial lobe rectangle; epandrial clasper finger-shaped, merged basally, basal 1/2 broad and rectangle, apical 1/2 narrowing bilaterally; secondary lobe of apical stylus of gonostylus sickle-shaped; terminal division of hypandrium elliptic.

Description.

Male. Body length 7.5 mm, wing length 7.5 mm.

Vertex and frons brown; face and clypeus yellow with brown hairs; gena yellow with a black elliptical spot medially, hairs on gena brown; occiput yellow. Compound eyes black without pubescence. Scape and pedicel yellow, flagellomeres light yellow; hairs on antenna brown. Proboscis yellow with brown hairs. Palpus yellow with brown hairs.

Thorax (Fig. 1c, d ). Pronotum light brown; propleuron yellow. Prescutum, scutum and paratergite uniformly brown; scutellum mostly brown, middle area yellowish brown; postnotum brown, laterotergite with a patch of dense brown hairs. Mesopleuron mostly brown, except upper ½ of anepisternum yellow. Coxae and trochanters yellow. Wing (Fig. 2b ) 3.8 times as long as wide, subhyaline, marked with four brown marks and one brown band as follows: four elliptic brown marks at base of cell R, tip of R1, fork of R4+5, and fork of M1+2; one brown band extending from anterior margin of wing, covering base of R2+3 and r-m, to the bend in distal section of CuA2. Veins brown; Sc ending in C at level of basal 1/3 of R2+3; Rs straight, 2 times the length of r-m; r-m arise from R4+5. Wing with setae over Sc and Rs, at and below fold in cell cua2, and over tip 1/2 of wing (sparse before forks of R4+5 and M1+2). Halter and prehaltere pale yellow with light brown hairs.

Abdomen. First tergum brown with basal 1/3 yellow, 2nd tergum brown with middle 1/3 yellow, 3rd tergum yellow with caudal 1/3 brown, 4th to 6th terga brown, 7th tergum brown with posterior margin yellow; first to 3rd sterna yellow, 4th to 6th sterna brown with posterior margin yellow, 7th sternum yellow; hairs on abdomen brown.

Male genitalia (Figs 3b , 4d-f , 5d-f ) yellow. Epandrium (Fig. 4d ) not bilobed, epandrial lobe rectangle, posterior margin with U-shaped concave; epandrial clasper finger-shaped, merged basally, basal 1/2 broad and rectangle, apical 1/2 narrowing bilaterally, with short brown hairs; epiproct triangular with short hairs. Gonocoxite (Fig. 4e ) short and stout, 1.5 times as long as wide, basal apodeme small; apical process of paramere papillary, apex with hooked projection. Gonostylus (Fig. 4e ): basal lobe of gonostylus ear-shaped with dense short hairs on inner side; secondary lobe of apical stylus of gonostylus sickle-shaped with short hairs; tertiary lobe of apical stylus of gonostylus triangular, round apically; apical stylus of gonostylus long and slender, finger-shaped with short hairs. Hypandrium (Fig. 4f ): basal division of hypandrium trapeziform, anterior margin with V-shaped concave, posterior margin with dense long hairs; membranous window of terminal division circular; terminal division of hypandrium elliptic. Aedeagus (Fig. 5d-f ): subapical sclerite rectangular, apex of subapical sclerite slightly concave; aedeagal sclerites with apex laterally compressed, with dorsal corner extended dorsoanterior, curved sided and convergent, base broad; lateral ejaculatory processes with base straight, narrow, extended straight 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; Guizhou Province, Suiyang District, Kuankuoshui National Nature Reserve ; 11 Aug. 2010; S. Liu leg.; CAU · 1♂, paratype; same collection data as holotype; CAU .

Distribution.

China (Guizhou).

Etymology.

Specific name from Latin Ptychoptera longa (adjective, feminine, meaning “long”), referring to the long epandrial clasper.

Remarks.

This new species is similar to P. yankovskiana from China and Korea but can be separated from the latter by first tergum brown with basal 1/3 yellow, the epandrium not bilobed, and the epandrial claspers merged basally. In P. yankovskiana , the first tergum is uniformly dark brown, the epandrium is bilobed and the epandrial claspers is not merged basally ( Kang et al. 2019).

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).