Sphenometopa (Tarsaraba) luridimacula Chao & Zhang, 1988a : 281

Zhang, Dong, Zhang, Ming, Li, Zijuan & Pape, Thomas, 2015, The Sarcophagidae (Insecta: Diptera) described by Chien-ming Chao and Xue-zhong Zhang, Zootaxa 3946 (4), pp. 451-509 : 472-475

Sphenometopa (Tarsaraba) luridimacula Chao & Zhang, 1988a: 281 . China, Xinjiang, Baicheng, Akeqisu.

Originally included specimens: Described from three males and one female.

Name-bearing type: Holotype ♂: Xinjiang, Baicheng/ Akeqisu/ Chinese Academy of Sciences [white label, in black print, in Chinese]// 2400M./ 1978. V.18 / Collected by X.Z. Zhang [“2400M./ 1978. V.18 ” handwritten in black ink, remaining in black print, in Chinese]// HOLOTYPE [red label, in black print]// IOZ(E)216074 [blue label, in black print]// ♂ [white label, in black print]// Sphenometopa / (Tarsaraba) / luridimacula / Zhao & Zhang [white label, in black print]// Sphenometopa / (Intermedia)/ luridimacula Chao et Zhang / Identified by C.M. Chao [“Identified by C.M. Chao” in black print, in Chinese, remaining handwritten in black ink].

Holotype slightly dusty and with some small tears along the anterior wing margin, but otherwise in good condition. Terminalia in situ; left hind tarsus and right hind tarsomeres 2–5 missing.

Current identity: Sphenometopa stackelbergiana Rohdendorf, 1967 , as treated by Rohdendorf (1967, 1971) and here proposed as a senior synonym of Sphenometopa luridimacula Chao & Zhang, 1988 , syn. n.

Additional specimens: Sphenometopa luridimacula Chao & Zhang : Allotype ♀: China: Xinjiang, Baicheng, Akeqisu, alt. 2400m, 17.V.1978, Coll. by X.Z. Zhang ( NZMC). Paratypes 2♂♂: China: Xinjiang, Baicheng, Akeqisu, 2400m, 18.V.1978, Coll. by X.Z. Zhang ( NZMC). Sphenometopa stackelbergiana Rohdendorf : Paratype 1♂: Pamir, river Vostochnyj Pshart [Eastern Pshart], 11.VI.1964, Coll. by L. Pritykina ( ZMUC); 1♂: Mongolia: Kobdosskij aimak, river Ulyastajn-Gol, 25 km S of Bulgan, 31.VII.1970, Coll. by [V.F.] Zaitsev ( ZMUC).

Remarks: Comparing the holotype of S. luridimacula with a paratype of S. stackelbergiana , we could not find difference in the shape and setosity of the fore first tarsomere, the extent of the wing patterns or in the male genitalia. Therefore, we have synonymized S. luridimacula under S. stackelbergiana as mentioned above. Sphenometopa stackelbergiana is herewith reported from China for the first time.

Redescription of Male: Body length 5.0–7.0 mm ( Fig. 12 A). Eye bare, deep red. Fronto-orbital plate, parafacial and postocular strip black with silvery pollinosity; parafacial bristles slightly in two rows, parafacial 1.4× as broad as fronto-orbital plate. Frontal vitta black, 2.1× as broad as fronto-orbital plate in median part; frons at vertex 0.35× head width ( Fig. 12 C); frontal row of 8 or 9 bristles; outer vertical bristle differentiated from postocular bristles, proclinate orbital bristles two. Gena ground color black with black bristles, height 0.22–0.29× eye height in lateral view ( Fig. 12 B). First antennal flagellomere gray, not reaching the level of vibrissal insertion, 2.4× as long as pedicel and 2.5× as broad as pedicel ( Fig. 12 C, D); arista bare, basal 5/7 swollen; postocular bristles in 5 or 6 rows; vibrissa developed; facial ridge with bristles in basal 2/3. Palpus black, slightly expanded in distal part.

Thorax ground color black with grayish white pollinosity. Chaetotaxy: acrostichals 0+1, dorsocentrals 2+3, intra-alars 0+2, supra-alars 1, postpronotals 2, notopleurals 2, scutellum with 1 apical, 1 subapical, 1 basal and 1 discal bristles. Pleuron with meropleurals 6, katepisternal bristles 1: 1, prosternum, metasternum, proepisternum and postalar wall bare.

Wing hyaline with three faint spots, the apical one obvious large ( Fig. 12 F); subcostal sclerite yellow, bare; tegula black; basicosta blackish brown, bare; costal spine not differentiated; vein R1 bare, two ventral and two dorsal bristles at node of R2+3-R4+5; lower calypter white.

Legs black; fore femur with long and dense bristles along posterodorsal, posterior, posteroventral and ventral margins, fore tibia with one apical dorsal and one sub-median posterior bristles, one row of slender posterodorsal bristles, fore first tarsomere enlarged and compressed ( Fig. 12 G), with elongated ventral bristles in distal half ( Fig. 12 G, H); mid femur with one row of anterior bristles (about 8), one row of fine posteroventral bristles and one row of ventral bristles (about 15), mid tibia with one apical dorsal, one sub-median ventral, two anterodorsal and three posterodorsal bristles; hind femur with long bristles along anterodorsal, anterior, anteroventral and ventral margins, hind tibia with one row of anterodorsal bristles (about 13) and one row of ventral bristles (about 5), three posterodorsal bristles.

Abdomen long oval; tergites 1+2, tergites 3 and 4 each with one pair of strong median marginal bristles, tergite 5 with complete row of marginal bristles; tergites 1+2 black, tergites 3 and 4 with posterior margin black and median stripes connected, tergite 5 with posterior half black ( Fig. 12 E).

Redescription of Female: Body length 5.4 mm ( Fig. 13 A). Parafacial about as broad as fronto-orbital plate. Frontal vitta black with yellow pollinosity and dense bristles in aterior part; frons at vertex 0.45× head width ( Fig. 13 C); frontal row of 7 bristles; one upper orbital and three proclinate orbital bristles. Postocular bristles in three rows. Wing without dark spots ( Fig. 13 A). Fore tibia without posterior bristles, fore first tarsomere without specific structure; mid femur with three median anterior bristles, mid tibia with three anterodorsal and four posterodorsal bristles; hind tibia with one row of ventral bristles (about 5). Abdomen with yellowish gray pollinosity; tergites 1– 4 with strong median marginal bristles, tergites 3 and 4 with posterior margin black and median stripes not connected ( Fig. 13 E). Other morphological characteristics are similar to those of the male.

Figures

FIGURE 12. Sphenometopa (Tarsaraba) luridimacula Chao & Zhang, 1988 [= Sphenometopa stackelbergiana Rohdendorf, 1967], male, holotype. A. Body, lateral view. B. Head, lateral view. C. Head, anterior view. D. Head, anterolateral view. E. Abdomen, dorsal view. F. Right wing, ventral view. G. Right fore tarsus, anterior view. H. Right fore tarsus, dorsal view, showing the first and second tarsomere. I. Labels. Scales: A = 2.00 mm, B – F = 1.00 mm, G & H = 0.50 mm.

FIGURE 13. Sphenometopa (Tarsaraba) luridimacula Chao & Zhang, 1988 [= Sphenometopa stackelbergiana Rohdendorf, 1967], female, allotype. A. Body, lateral view. B. Head, lateral view. C. Head, anterior view. D. Head, anterolateral view. E. Abdomen, dorsal view. F. Labels. Scales: A = 2.00 mm, B & D = 0.50 mm, C & E = 1.00 mm.