Morellia (M.) sinensis Ôuchi, 1942

Pamplona, Denise, Nihei, Silvio S., Couri, Márcia S. & Pont, Adrian C., 2016, Taxonomy of Morellia Robineau-Desvoidy (Diptera: Muscidae): revision of the subgenera Morellia s. str. and Parapyrellia Townsend, Zootaxa 4163 (1), pp. 1-110 : 79-82

36. Morellia (M.) sinensis Ôuchi, 1942

( Figs 144–150 )

Morellia sinensis Ôuchi, 1942: 53 . Type locality: CHINA, Zhejiang, Tienmushan and Mokanshan. Type location: Holotype Ƌ, SIPPE.

Redescription. Colour. Black. Frontal vitta and fronto-orbital plate black; face, parafacial, antenna and gena black with grey-brownish pruinosity; palpus black; mesonotum metallic black with one silver-dusted central vitta along presutural acrostichals, pleura silver pruinose; postpronotal lobe silver pruinose; notopleuron silver or grey pruinose; legs black; haltere yellow; calypters brownish, upper calypter with brownish edge and on outer half white and opaque; wing without dark markings; abdomen black but last tergite and ventrally with silver pruinosity.

Male. Body length: 7.0–8.0 mm; wing length: 6.0 mm.

Head. Eyes bare but with the usual minute and scattered hairs, separated at level of anterior ocellus by 0.20– 0.22 of head width, frons divergent towards lunule; ocellar triangle with 4–5 pairs of setae; 14–16 pairs of frontal setae; pedicel with 2 setae and a few setulae; arista plumose, with 16–22 cilia, bare apicad, and with some secondary plumes as far as level of 5th to 6th cilia; vibrissa as long as arista; 1 strong supravibrissal seta, half as long as vibrissa, and many other setulae that extend to basal fourth level of postpedicel; 4–5 subvibrissal setae followed by 9–10 genal setae.

Thorax. Acrostichals 0+2, the first pair weaker; dorsocentrals 3+4; intra-alars 1+1; presutural 1; prealar 1, half the length of first supra-alar; supra-alars 2; postpronotals 4, the innermost weaker; notopleuron with 2 long, subequal setae and covered with ground-setulae; postalars 2; intrapostalar 1; scutellum with 1 basal, 2 discal and 1 apical pairs of setae, and latero-ventrally with many setae, the basalmost ones downcurved; postalar wall bare; suprasquamal ridge with short pile; proepisternal depression bare; proepimeron with about 5 long setae and a few long setulae; prosternum broad and setulose; anepisternum with a posterior row of about 9 setae, with 3–4 weak setae upcurved on upper-anterior corner, and covered with long setulae; katepisternals 1+2; anepimeron extensively setulose; katepimeron with 1 setula; anatergite bare; katatergite setulose. Legs: fore femur with a posterodorsal row of setae on apical two-thirds becoming shorter basad, and a complete posteroventral row of setae; fore tibia with an anterodorsal row of short and strong setae, a row of strong and very short dorsal setulae, 2– 3 long posteroventral setulae on middle third, many setulae on ventral surface, 1 anteroventral, 1 dorsal, 1 posteroventral and 1 ventral preapical setae, and anterior surface with a brush-like ctenidium of golden setulae; fore tarsus with a golden ctenidium and with some long setae on basal segment; mid femur without a tubercle, with 5–6 ventral setae on basal half, 1 anterior seta at middle third, and 3–4 posterodorsal to posterior preapical setae; mid tibia with an anterodorsal row of very short setae, 3–4 short setae on apical half, 3 strong posterior setae on middle third, a posteroventral row of 4–5 strong setae on basal two-thirds, 1 anterodorsal, 1 dorsal and preapical setae, and 2 anteroventral and 2 ventral apical setae; hind femur with an anteroventral row of setae, strongest on apical third, an anterodorsal row of setae, a ventral row of weak setae on basal half, 2 posterodorsal preapical setae and a few posteroventral setulae on apical fourth; hind tibia with 5–6 subequal anteroventral setae on apical half, an anterodorsal row of short setae of which 2 at middle are longer, a dorsal row of short but strong setulae, a posterior row of weak setae, a long and strong posterodorsal seta on apical third, some long posteroventral to ventral setae on apical half, the basalmost ones longer, 1 anterodorsal, 1 dorsal, 1 anteroventral preapical setae, 1 anteroventral and no posteroventral apical setae, and a posterior brush-like golden ctenidium; hind tarsus with a golden brush ventrally. Wing with a uniform covering of microtrichia; dm-cu sinuous; stem-vein bare on dorsal surface, and ventrally with about 3–5 short setulae before humeral cross-vein and bare after humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 setulose from base to midway to r-m on dorsal surface and at base on ventral surface; 5–6 strong setae on basicosta.

Abdomen. With a lateral tuft of setulae on syntergite 1+2; tergites 3–5 with setae laterally; tergite 4 with setae apically and tergite 5 with a few discal setae; sternite 1 setulose; posterior margin of sternite 5 concave and with setae on membrane ( Fig. 144 ).

Terminalia. Outer margin of cercal plate slightly convex; cercal plate ventrally with one strong spine ( Figs 145–147 ); surstylus with 3 setae basally; aedeagus with spicules on anterior membrane of distiphallus; gonopod with 2 setae on basal half; paramere with a few setulae on apical half ( Fig. 148 ).

Female. Body length: 6.0–7.0 mm; wing length: 6.0–7.0 mm.

Similar to male, differing as follows: calypters yellowish; eyes separated at level of anterior ocellus by about 0.34–0.40 of head width; fronto-orbital plate with 2 proclinate setae, 5 proclinate setulae and 1–2 reclinate setulae; fore tibia without long posteroventral setulae; hind tibia without a row of setae but with 2 posterodorsal setae, 1 on basal third and another on middle third, and without setae on posteroventral to ventral surfaces.

Ovipositor. Tergite 6 as 2 rods; tergite 7 as 2 rods, posteriorly with 2 small round plates with 3–5 very small spines; tergite 8 as 2 rods, posteriorly enlarged; sternite 6 as 1 rod, posteriorly with a few very small setae; sternite 7 as 1 rod, posteriorly with 3 round plates with spines; sternite 8 as 2 very small plates with very small setulae; enlarged spicules on intersegmental membrane between segments 6–7 and 7–8; epiproct longer than wide with about 2 setae and 2 setulae; hypoproct with many setae; cercus flattened and not long ( Figs 149–150 ).

Material examined. TAIWAN: Tsiufeng , 28.v.1972, H.M. Lin, 1 Ƌ, 1 ♀ ( BMNH) ; Shihting , 18.v.1972, R. Kano, 1 ♀ ( BMNH) ; CHINA: Guizhou Province, 1.viii.1984, Wei Lian-meng, 1 Ƌ ( BMNH) .

Distribution. ORIENTAL: Nepal, China (Zhejiang, Guizhou, Henan), Taiwan.

Figures

FIGURES 144 – 150. Morellia (M.) sinensis Ôuchi. 144. Sternite 5, male. 145. Cercal plate, male. 146. Cercal plate, male, ventral view. 147. Left surstylus, male. 148. Phallic complex, lateral view. 149. Ovipositor, dorsal view. 150. Ovipositor and spermathecae, ventral view.