Lispe caesia microchaeta Séguy, 1940

Zhang, Dong, Ge, Ying-Qiang, Li, Xin-Yu, Liu, Xian-Hui, Zhang, Ming & Wang, Rong-Rong, 2016, Review of the Lispe caesia - group (Diptera: Muscidae) from Palaearctic and adjacent regions, with redescriptions and one new synonymy, Zootaxa 4098 (1), pp. 43-72 : 52-54

Lispe caesia microchaeta Séguy, 1940

( Figs. 1 C; 2B; 3C; 4G, I,K; 10; 11; 30B; 31E, F)

Lispa caesia microchaeta Séguy, 1940: 342 ; Hennig, 1960: 424; Pont, 1986: 185; Xue & Zhang, 2005: 119; Zhang et al., 2005: 356

Lispe caesia caesia Meigen : Fan, 1992: 371; Xue & Chao, 1996: 995. [misidentified]

Material examined. 1 female, China: Xinjiang: Mt. Aerjin, 11.VIII.1988, Coll. X.Z. Zhang; 9 males and 2 females, China: Xinjiang: Altay City: Kalamaili Nature Reserve, 14–17.VIII.2009, Coll. D. Zhang; 11 males, China: Liaoning: Jingzhou, 9.VIII.2014, Coll. X.Y. Li. All deposited in MBFU.

Redescription. Male. Body length: 6.0– 6.5 mm. Head ( Figs. 10 C, D, E): Eye bare, facet a little expanded on anterior margin in median part; frons broad in median part, becoming narrow anteriorly, median part about 0.32– 0.35 times of head-width; frontal vitta, frontal triangle and frontal-orbital plate with obvious boundary; frons, face, gena and antenna with silvery pollinosity; upper orbital setae 1, frontal setae 3 and with 1 row of short setae on outer part; parafacial bare, about as wide as postpedicel; facial ridge low, concave; antenna dark brown, postpedicel about 3.2–3.4 times as long as broad (1.6–1.8 times as long as pedicel), arista plumose, the longest setula equal to width of postpedicel; face planate, without facial carina; epistoma not projecting to vibrissal angle; vibrissa weak, shorter than length of distance between them; genal height about 1/7 of eye height; postocular setae 4 rows, posterior 2 rows situated in occiput; postgena with black setulae; proboscis short, labella small, with 2 prestomal teeth on posterior margin; prementum shinning; palpi yellow, compressed, becoming spoon-shaped apically, apical inner surface setulose and outer surface bare, outer surface with silvery pollinosity.

Thorax: Ground color black with dense silver grey pollinosity; acr 0+1 (thin); presutural 5 rows of acrostichal setulae; dc 2+3; ia 0+2, without pra; basal and apical scutellar setae all developed; scutellum bare on lateral surfaces and underneath; notopleuron bare; the median part of anepimeron with numerous bristles; prosternum, meron and katepimeron bare; spiracles brown, posterior one small and with 4 or 5 setae on posterior lower margin; katepisternal setae 1+2.

Wings: Slightly hyaline; veins becoming brown towards apex; tegula brown; basicosta and subcostal sclerite yellow; costal spine unobvious; vein C with ventral setulae; other veins bare; vein R4+5, M and crossvein dm-cu straight; calypteres white; haltere tawny; WIPs with color bands not entirely demarcated (blue, magenta, red and yellow) at posterior part of the wing, of which red band narrow ( Figs. 31 E, F).

Legs: Black except knees yellow, with densely silver grey pollinosity; fore femur with 1 elongated pv row; fore tibia with 1 submedian pv; mid tibia with 1 submedian ad and 1 submedian pv; hind femur with 1 ad row, with 3 elongated v on apical half; hind tibia with 1 apical d; first hind tarsomere dictinctly swollen, becoming spindleshaped ( Fig. 1 B), swollen part with close-set elongated ventral setulae (sword-shaped) ( Fig. 30 B); swollen tarsomere shorter than the summed length of other tarsomeres; tarsi shorter than tibiae; claws and pulvilli small.

Abdomen: Ground color black, oval, with grey pollinosity; tergites silver grey, tergite 3 with small faint patches, tergite 4 dusted with large triangular brown patches on sides, tergite 5 with pair of large brown venteral patches ( Fig. 10 B).

Female. Body length 6.4–6.6 mm. General characters as in male but differing from male in: frons about 0.31 times of head-width at median part; upper orbital setae 2; vibrissa developed; hind femur with 4 elongated setulae on venter; first hind tarsomere not swollen; tergite 4 with larger patches, tergite 5 without patches ( Fig. 11 E), tergite 7 divided medially, fused with sternite 7; sternite 7 stongly sclerotized, with median lobe, sternite 8 absent. Distribution. China (Liaoning Xinjiang), Spanish Sahara.

Figures

FIGURE 1. Swollen and setulose first hind tarsomeres of males from Lispe caesia - group. A, L. aquamarina Shinonaga & Kano, right leg, posteroventral view, from Liaoning, China. B, L. caesia caesia Meigen, right leg, ventral view, from France. C, L. caesia microchaeta Séguy, left leg, posterolateral view, from Xinjiang, China. D, L. candicans Kowarz, left and right legs, posterior view, from France. E, L. flavicornis Stein, right leg, anteroventral view, from Guangdong, China. F, L. halophora Becker, left leg, posteroventral view, from Egypt. G, L. lanceoseta Mou, right leg, anteroventral view, from Shanxi, China. H, L. leucocephala Loew, right leg, ventral view, from Egypt. I, L. palawanensis Shinonaga & Kano, left and right legs, lateral view, from Phillipines. J, L. patellitarsis Bekcer, left leg, posteroventral view, from Zhanjiang, China. Scale bars: A – J = 0.50 mm.

FIGURE 10. Lispe caesia microchaeta Séguy, 1940. Male, from Xinjiang, China [in MBFU]. A, habitus, lateral view. B, head, lateral view. C, head, anterolateral view. D, head, anterior view. E, abdomen, dorsal view. Scale bars: A = 1.00 mm, B – E = 0.5 mm.

FIGURE 11. Lispe caesia microchaeta Séguy, 1940. Female, from Xinjiang, China [in MBFU]. A, habitus, lateral view. B, head, lateral view. C, head, anterolateral view. D, head, anterior view. E, abdomen, dorsal view. Scale bars: A = 1.00 mm, B – E = 0.50 mm.

FIGURE 30. Scanning electron microscope images of male swollen first hind tarsomeres from Lispe caesia - group. A, L. aquamarina Shinonaga & Kano, anteroventral view. B, L. caesia microchaeta Séguy, anteroventral view. C, L. flavicornis Stein, postroventral view. D, dense sword-shaped microsetae on the male swollen first hind tarsomere of L. flavicornis Stein. E, nanogrooves on the microsetae of L. flavicornis Stein. Scale bars:: A – C = 200 µm, D = 15 µm, E = 5 µm. Abbreviations: tar 1 – 5 = the first to fifth tarsomere, ms = microsetae, ng = nanogroove.

FIGURE 31 (to be continued). Wing interference patterns of Lispe caesia - group, dorsal view. A. male of L. aquamarina Shinonaga & Kano. B. female of L. aquamarina Shinonaga & Kano. C. male of L. caesia caesia Meigen. D. female of L. caesia caesia Meigen. E. male of L. caesia microchaeta Séguy. F. female of L. caesia microchaeta Séguy. G. male of L. candicans Kowarz. H. female of L. candicans Kowarz. Scale bars: A – H = 1.00 mm.