Morellia (P.) semimarginata ( Stein, 1918 )

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 : 103-105

7. Morellia (P.) semimarginata ( Stein, 1918) , subgen. comb. nov.

( Figs 195–197 )

Pyrellia semimarginata Stein, 1918: 206 . Type localities: PERU, Callanga; BOLIVIA, San Antonio. Syntypes: ♀♀ (unspecified number, “mehrere Weibchen”) , HNHM (destroyed 1956); 2 ♀♀, ZMHB ( Pont & Werner 2006: 94; seen).

Redescription. Female. Colour. Black, with violet reflections. Frontal vitta and fronto-orbital plate shining black, with weak pruinosity laterally on lower fronto-orbital plate; face, parafacial and gena brown, yellowish on borders; parafacial with a silver pruinose patch on middle third; antenna brown with grey pruinosity, pedicel yellow, basal half of arista yellow; palpus yellow; mesonotum metallic black with a slight violet reflection and with one silverdusted central vitta in front of the acrostichals; legs brown with tarsi yellow; haltere yellow; calypters brown, upper calypter on outer half white and opaque; wing yellowish, with dark markings from base to tip of R1 and on r-m cross-vein. Abdomen without pruinosity.

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

Head. Eyes bare, separated at level of anterior ocellus by about 0.34–0.41 of head width; frons parallel towards lunule; ocellar triangle with a pair of setae and a few setulae; 12–14 pairs of weak frontal setae; fronto-orbital plate with 8 proclinate but no reclinate setulae; postpedicel 1.4–1.8 times the length of pedicel; pedicel with 2 weak setae and a few short setulae; arista plumose, with 12–14 cilia, bare apicad, and with some secondary plumes as far as level of 1st cilium; vibrissa much shorter than arista; 1 supravibrissal seta, less than half the length of vibrissa, and a few setulae extending to level of middle of postpedicel; 5 weak subvibrissal setae followed by 7 genal setae. Palpus expanded at apex.

Thorax. Acrostichals 0+1; dorsocentrals 0+2; intra-alars 1+1; presutural 1; prealar 1, strong, with 2 other setae below it; supra-alars 2; postpronotals 3; notopleuron with 2 long, subequal setae and covered with ground-setulae; postalars 2; no intrapostalar; scutellum with 1 basal, 1 subapical, and 1 apical pairs of setae, and latero-ventrally with many setae, the basalmost ones downcurved; postalar wall and suprasquamal ridge with short pile; proepisternal depression bare; proepimeron with about 4 long setae; prosternum broad and setulose; anepisternum with a posterior row of about 12 setae, without upcurved setae on upper-anterior corner, and covered with long setulae; katepisternals 0+1; anepimeron extensively setulose; katepimeron with some setulae; anatergite bare; katatergite setulose. Legs: fore femur with a complete posterodorsal row of weak setae, and a posteroventral row of setae on apical two-thirds becoming shorter basad; fore tibia with an anterodorsal row of short and weak setae, 1 dorsal preapical seta, 1 posteroventral apical seta, and ventral surface with a ctenidium of golden setulae; fore tarsus with a golden ctenidium and some long setae on basal segment; mid femur without a tubercle, with 3 posterior to posterodorsal preapical setae; mid tibia with an anterior row of very short setae, a dorsal row of very strong and short setulae, with 3 strong posteroventral setae on basal two-thirds, 1 anterodorsal, 1 dorsal and 1 posterodorsal preapical setae, and 1 anteroventral, 2 anterior and 2 ventral apical setae; hind femur with an anteroventral row of weak setae, of which 4–5 on apical third are stronger, an anterodorsal row of setae, and no posteroventral setae; hind tibia with 2 anterodorsal setae on middle third, a dorsal row of short but strong setulae, 1 weak but long posterior seta on middle third, 1 dorsal and 1 anterodorsal preapical setae, no apical setae, and a posterior brush-like ctenidium; hind tarsus with strong setae ventrally. Wing with a uniform covering of microtrichia; dm-cu almost straight; stem-vein bare before, and with 5 short setulae after, humeral cross-vein on dorsal surface, and ventrally with about 4 short setulae before humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 setulose from base to beyond r-m on dorsal surface and at base on ventral surface; 1 strong seta on basicosta.

Abdomen. With a lateral tuft of setulae on syntergite 1+2, tergites 4 and 5 with a few setae apically; tergites 3– 5 with a few setae laterally; sternite 1 setulose.

Ovipositor. Tergite 6 shaped as 2 golf-club-like rods, posteriorly with some small setae; tergite 7 as 2 rods, posteriorly with 2 plates with spinose setae; tergite 8 as 2 rods, anteriorly enlarged, posteriorly with 2 plates with spines; sternite 6 with 4 spines; sternite 7 as 2 plates with setae; sternite 8 as 2 small rods, posteriorly with 2 small plates with setae; enlarged spicules on intersegmental membrane between segments 7 and 8; epiproct with about 6 setae; hypoproct with setae; cercus cylindrical and long ( Figs 195–196 ).

Egg as in Fig. 197 .

Male. Unknown.

Material examined. PERU: Callanga, no further data, 2 ♀ syntypes ( ZMHB).

Distribution. NEOTROPICAL: Cuba, Peru, Bolivia.

Figures

FIGURES 195 – 197. Morellia (P.) semimarginata (Stein), female syntype. 195. Ovipositor, dorsal view. 196. Ovipositor and spermathecae, ventral view. 197. Egg.