Morellia (M.) pseudonigrisquama Shinonaga & Tumrasvin, 1978

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 : 75-77

33. Morellia (M.) pseudonigrisquama Shinonaga & Tumrasvin, 1978

( Figs 131–134 )

Morellia pseudonigrisquama Shinonaga & Tumrasvin, 1978: 351 . Type locality: THAILAND, Khao Yai , 30 km south of S. Pak Chong. Holotype Ƌ, NSMT.

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

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

Head. Eyes bare, separated at level of anterior ocellus by 0.18–0.19 of head width; frons divergent towards lunule; ocellar triangle with 1 pair of setae and 2 or 3 long setulae; 15–17 pairs of frontal setae; postpedicel 1.7–2.1 times the length of pedicel; pedicel with 2 setae and a few setulae; arista plumose, with 17–22 cilia, bare apicad, and with some secondary plumes as far as level of 6th to 8th cilia; vibrissa as long as arista; 1 strong supravibrissal seta, half as long as vibrissa, and a few setulae that extend to level of middle of postpedicel; 4 subvibrissal setae followed by 7 genal setae.

Thorax. Acrostichals 0+1; dorsocentrals 2+4; intra-alars 1+1; presutural 1; prealar 1, half the length of first supra-alar; supra-alars 2; postpronotals 3; notopleuron with 2 long, subequal setae and covered with groundsetulae; 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 bare; proepisternal depression bare; proepimeron with about 3–4 long setae and a few setulae; prosternum broad and setulose; anepisternum with a posterior row of about 10 setae, with 2 weak setae upcurved on upper-anterior corner, and covered with short setulae; katepisternals 1+2; anepimeron setulose medially and on subalar ridge; katepimeron with 1 setula; anatergite bare; katatergite setulose. Legs: fore femur with a posterodorsal row of setae on apical two-thirds, and a complete posteroventral row of setae; fore tibia with a posterodorsal row of short setae, many ventral setulae, 3 long and weak ventral setae on apical half, 1 anterodorsal, 1 dorsal and 1 posteroventral setae, and anterior surface with a brush-like ctenidium of golden setulae; fore tarsus with some long setae on basal segment; mid femur without a tubercle, with 1 anterior seta on middle third, 4–5 posteroventral setae on apical half, 2 strong ventral setae on basal third, and 3 posterior to posterodorsal preapical setae; mid tibia with an anterodorsal row of very short setae, a dorsal row of strong setulae, 2 posterior setae on apical half, a posteroventral row of 4–5 strong setae on basal two-thirds, of which 2 on middle third are stronger, 1 anterodorsal, 1 dorsal and 1 posterodorsal preapical setae, and 2 anteroventral and 2 ventral apical setae; hind femur with an anteroventral row of setae on apical half, an anterodorsal row of setae, 3 dorsal setae at base, 2 posterodorsal preapical setae, and a few posteroventral setulae on apical fourth; hind tibia with 2 anteroventral setae on apical third, an anterodorsal row of short setae of which one at middle is longer, a dorsal row of short but strong setulae, a posterior row of setae of which those on basal third and another on apical third are stronger, 4 posteroventral setae on apical fourth, 1 anterior, 1 dorsal, 1 anteroventral and 1 ventral preapical setae, 1 posteroventral apical seta, and a posterior brushlike ctenidium; hind tarsus with a golden brush ventrally. Wing with a uniform covering of microtrichia; dm-cu sinuous; stem-vein bare on dorsal surface, ventrally with about 5–8 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 or twothirds the distance 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 2–5 with a few setae laterally, tergite 5 with setae on disc and apically; sternite 1 setulose; posterior margin of sternite 5 concave and with some setae on membrane ( Fig. 131 ).

Terminalia. Outer middle third of cercal plate convex, ventral surface with one spine; surstylus with setae basally and apically ( Figs 132–133 ); aedeagal apodeme narrowed apically; aedeagus with spicules on anterior membrane of distiphallus; gonopod with 2 setae on middle third; paramere with some setae apically and some on middle third ( Fig. 134 ).

Female. Unknown.

Material examined. THAILAND: Ban Khao Yoi, 30 km south of Pak Chong, 25–26.xii.1975, S. Shinonaga & H. Shima, 2 Ƌ paratypes ( BMNH).

Distribution. ORIENTAL: Thailand.

Figures

FIGURES 131 – 143. Males of Morellia (M.) spp. 131 – 134. Morellia (M.) pseudonigrisquama Shinonaga & Tumrasvin. 131. Sternite 5. 132. Cercal plate. 133. Left surstylus. 134. Phallic complex, lateral view. 135 – 138. Morellia (M.) quadriremis van Emden. 135. Sternite 5. 136. Cercal plate. 137. Left surstylus. 138. Phallic complex, lateral view. 139 – 143. Morellia (M.) setosa Zielke. 139. Sternite 5. 140. Cercal plate. 141. Cercal plate, ventral view. 142. Left surstylus. 143. Phallic complex, lateral view.