Morellia (Morellia) affixa Walker 1856
Creators: name: Pamplona, Denise
name: Nihei, Silvio S.
name: Couri, Márcia S.
name: Pont, Adrian C.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Muscidae
Morellia
Morellia affixa

description: 3. Morellia (M.) affixa (Walker, 1856)
(Figs 13–18)
Musca affixa Walker, 1856: 27. Type locality: MALAYSIA, Mount Ophir. Holotype ♂, BMNH (van Emden 1965: 113; seen).
Redescription. Colour. Black, with grey pruinosity. Frontal vitta and fronto-orbital plate black; face, parafacial and gena black with silver pruinosity; antenna dark brown with grey pruinosity; palpus brown; mesonotum black with one silver dusted central vitta; postpronotal lobe, notopleuron and other pleura silver pruinose; scutellum silver laterally; legs dark brown; haltere yellow; calypters yellow, the upper one with brownish edge; wing without dark markings; abdomen with weak grey pruinosity but last tergite with silver pruinosity.
Male. Body length: 10.0 mm; wing length: 10.0 mm.
Head. Eyes bare, separated at level of anterior ocellus by about 0.18 of head width; frons divergent towards lunule; ocellar triangle with a pair of setae and few setulae; 12 pairs of frontal setae, the second and the third much shorter than the others; postpedicel about 1.4 times the length of pedicel; pedicel with 2 setae; arista plumose, with 19–22 cilia, bare apicad, 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 many other setulae that extend to level of middle of postpedicel; 4 subvibrissal setae followed by 4 genal setae and other shorter ones.
Thorax. Acrostichals 0+1; dorsocentrals 3+4; intra-alars 1+1; presutural 1; prealar 1; supra-alars 2; postpronotals 4 (the inner weak); notopleuron with 2 long, subequal setae and long ground-setulae that are closer to the posterior setae; postalars 2; intrapostalar 1; scutellum with 1 basal, 2 latero-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 2 long setae (the uppermost longer) and many setulae; prosternum broad and setulose; anepisternum with a posterior row of about 9 setae, with 2, upcurved weak setae on upperanterior corner, and covered with short setulae; katepisternals 1+2; anepimeron setulose only on subalar ridge; katepimeron bare; anatergite and katatergite bare. Legs: fore femur with a posterodorsal row of setae on apical half, a complete posteroventral row of setae and 4–5 setulae on anterior basal fourth; fore tibia with a dorsal preapical seta; mid femur without a tubercle, with 3–4 anteroventral setulae and 3 posterior to posterodorsal preapical setae; mid tibia with a row of 4 dorsal setae, the median ones stronger, and a posterodorsal row of setae on apical third, 1 dorsal preapical seta and 2 anteroventral, 1 posteroventral and 2 ventral apical setae; hind femur with a complete anterodorsal row of setae and with an anteroventral row of setae, strongest in apical half, and a few posteroventral setulae on apical fourth; hind tibia with 5–6 short anteroventral setae on apical half, ending preapically, 1 short seta at middle of anterior surface, one dorsal row of very short and strong setae, 1 dorsal and no anterodorsal preapical setae, 2 posterior setae on basal third and on apical third, both weak, 2–3 posteroventral preapical setulae1 anteroventral and 1 posteroventral apical setae; hind tarsus with a golden brush ventrally. Wing with a uniform covering of microtrichia; dm-cu almost straight; stem-vein bare on dorsal surface, and ventrally with about 4 short setulae before humeral cross-vein and bare after humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 with setulae on dorsal and ventral surfaces from base to midway to r-m; 3 strong setae on basicosta.
Abdomen. Tergites with lateral tufts of setulae; sternite 1 setulose; sternite 5 with many setae, bare on basal third, posterior margin deeply concave with many setulae (Fig. 13).
Terminalia. Cercal plate and surstyli as in Fig. 14; surstylus with few cilia and a seta on apical third (Fig. 15); aedeagal apodeme not enlarged apically; basiphallus short; aedeagus bare; gonopod with a long and strong seta and enlarged basally; paramere with many setae on apical half (Fig. 16).
Female. Body length: 8.0 mm; wing length: 8.0 mm.
Similar to male, differing as follows: eyes separated at level of anterior ocellus by about 0.31 of head width; fronto-orbital plate with 3 proclinate setae and 1 reclinate seta; proepimerals weaker; hind tibia without 2–3 posteroventral preapical setulae; hind tarsus without modifications in shape or bristling.
Ovipositor. Tergite 6 rod-like; tergite 7 rod-like, with 2 small plates each with 3 small spines; tergite 8 broadly and sinuously rod-like; sternite 6 rod-like, posteriorly with 3 groups of very small spines, sternite 7 rod-like, posteriorly with 3 small plates with spines, sternite 8 as very small plates with 2 small setulae (Fig. 18); epiproct large, with 4 small spines, cercus flattened and not long (Fig. 17).
Material examined. MALAYSIA: Mt Ophir, A.R. Wallace, holotype Ƌ (BMNH); BORNEO: Sarawak, 1909, C.J. Brooks, 1 ♀ (BMNH).
Distribution. ORIENTAL: Thailand, Malaysia and the island of Borneo (Sabah, Sarawak).
description: Published as part of 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, pp. 1-110 in Zootaxa 4163 (1) on page 18, DOI: 10.11646/zootaxa.4163.1.1, http://zenodo.org/record/259278