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

Figs 1e, f , 2c , 3c , 4g-i , 5g-i

Diagnosis.

Mesopleuron mostly brown, except upper 1/2 of anepisternum yellow; wing marked with three brown marks and two brown bands; epandrial clasper with a curved finger-shaped projection interiorly; anterior lobe of basal lobe of gonostylus nose-shaped; medial lobe of basal lobe of gonostylus toothbrush-shaped.

Description.

Male. Body length 7.0 mm, wing length 7.0 mm.

Vertex and frons brown; face and clypeus yellow with light 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 light yellow with light yellow hairs. Palpus light yellow with light yellow hairs.

Thorax (Fig. 1e, f ). Pronotum and propleuron light brown. 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; femora yellow with brown ring apically; hairs on legs brown. Wing (Fig. 2c ) 3.8 times as long as wide, subhyaline, marked with three brown marks and two brown bands as follows: one triangular brown mark at base of M, two elliptic brown marks at base of Rs and at midlength of CuA1; median band extending from anterior margin of wing, covering base of R2+3 and r-m, to the bend in distal section of CuA2; subapical band extending from anterior margin of wing, covering tip of R1, R2, and fork of R4+5, to fork of M1+2.Veins brown; Sc ending in C not at level of basal third of R2+3; Rs slightly curved medially, 4.1 times the length of r-m; r-m arise from Rs. Wing with setae over Sc and Rs, at and below fold in cell cua2, and over tip 1/2 of wing (slightly sparse before forks of R4+5 and M1+2). Halter and prehaltere pale yellow with light brown hairs.

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

Male genitalia (Figs 3c , 4g-i , 5g-i ) brown. Epandrium (Fig. 4g ) bilobed, epandrial lobe semicircular; epandrial clasper broad basally, with a curved finger-shaped projection interiorly, finger-shaped projection basally narrow, apically swollen, with uniformly long hairs; epandrial clasper narrowed medially and slightly curved ventrally, slightly swollen and flat apically, with dense long hairs; epiproct triangular, with two papillary projections posteriorly, with short hairs. Gonocoxite (Fig. 4h ) broad, 2 times as long as wide, inner side with a triangular projection medially, with dense hairs; basal apodeme small; apical process of paramere hooked. Gonostylus (Fig. 4h ): anterior lobe of basal lobe of gonostylus nose-shaped with several long hairs; medial lobe of basal lobe of gonostylus toothbrush-shaped, with a hairy semilunar lobe basally and a hairy papillary projection medially; apical stylus of gonostylus finger-shaped with short hairs. Hypandrium (Fig. 4i ): basal division of hypandrium triangular, anterior margin with V-shaped concave; terminal division of hypandrium gourd-shaped with dense short hairs. Aedeagus (Fig. 5g-i ): subapical sclerite triangular, apex of subapical sclerite flat; aedeagal sclerites with apex laterally compressed, with dorsal corner extended dorsoanterior, curved sided and convergent, base broad; lateral ejaculatory processes with base straight, 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; Guangdong Province, Ruyuan District, Nanling National Forest Park, Mount Xiaohuangshan ; 24 Aug. 2010; T. Zhang leg.; CAU · 1♂, paratype; same collection data as holotype; CAU .

Distribution.

China (Guangdong).

Etymology.

Specific name Ptychoptera xiaohuangshana (adjective, feminine) referring to the type locality, Mount Xiaohuangshan.

Remarks.

This new species is similar to P. bellula from China but can be separated from the latter by the 2nd tergum light brown with middle 1/3 yellow, the epandrial clasper with a curved finger-shaped projection interiorly, the epiproct with two papillary projections posteriorly, and the medial lobe of basal lobe of gonostylus toothbrush-shaped. In P. bellula , the 2nd tergum is black with base yellow, the epandrial clasper does not have a curved finger-shaped projection interiorly, the epiproct have a strongly haired papillary projection posteriorly, and the medial lobe of basal lobe of gonostylus is semilunar ( Alexander 1937; Krzeminski and Zwick 1993).

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).