Morellia (Morellia) longiseta van Emden 1939
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 longiseta

description: 20. Morellia (M.) longiseta van Emden, 1939
(Figs 71–76)
Morellia longiseta van Emden, 1939: 60. Type locality: UGANDA: Ruwenzori Mts, Mobuku Valley, 7300 feet. Syntypes: 1 Ƌ, 1 ♀, BMNH (seen).
Redescription. Colour. Black, with grey pruinosity. Frontal vitta and fronto-orbital plate black; face, parafacial, gena and antenna black with grey pruinosity; edge of face without pruinosity; palpus brown; mesonotum metallic black with one silver dusted central vitta along presutural acrostichals, postpronotal lobe, notopleuron and other pleura silver pruinose; supra-alars and lateral part of scutellum with faint grey pruinosity; fore and mid legs dark brown; haltere yellow, calypters yellowish; upper calypter on outer half white and opaque; wing without dark markings; abdomen with a shifting tessellated pattern and with silver pruinosity on last tergite and ventrally.
Male. Body length: 6.0–7.0 mm; wing length: 6.0–7.0 mm.
Head. Eyes bare, but with the usual minute and scattered hairs, separated at level of anterior ocellus by 0.12– 0.13 of head width; frons divergent towards lunule; ocellar triangle with a pair of setae and a few setulae; 17–18 pairs of frontal setae, some weaker; postpedicel 1.1–1.4 times the length of pedicel; pedicel with 1 seta and few setulae; arista plumose, with 12–14 cilia, bare apicad, and with some secondary plumes as far as level of 3rd or 4th cilia; vibrissa shorter than arista; 1 supravibrissal seta, less than half of vibrissal length, and a few setulae that extend to level of middle of postpedicel; 6–7 subvibrissal setae followed by 8–9 genal setae.
Thorax. Acrostichals 0+1; dorsocentrals 0+2; intra-alars 1+1; presutural 1; prealar 1, less than 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, 1 preapical and 1 apical pairs of setae, and lateroventrally with many setae, the basalmost ones downcurved; postalar wall bare; suprasquamal ridge bare; proepisternal depression bare; proepimeron with about 4 long setae and many setulae; prosternum broad and bare; anepisternum with a posterior row of about 8 setae, with 3 weak setae upcurved on upper-anterior corner, and covered with long setulae; katepisternals 1+2; anepimeron extensively setulose; katepimeron bare; anatergite bare; katatergite setulose. Legs: fore femur with a posterodorsal row of short setae on apical two-thirds, and a complete posteroventral row of setae; fore tibia with a posterodorsal row of short and strong setae on apical two-thirds, 2 long and fine posteroventral setae on middle third, 1 dorsal, 1 posterodorsal and 1 posteroventral preapical setae, and a brush-like ctenidium on ventral surface; mid femur with a tubercle at apex of anterior to posterodorsal surfaces bearing about 5 short spines that continue as 2 strong and 4 fine posterodorsal to posterior setae, all arranged in a U-shape, with 2 anterior setae on middle third, and 2 long and weak ventral setae on basal third; mid tibia with an anterodorsal comb-like row of strong and short setae, the lowermost weaker, a dorsal row of very short and strong setae on basal two-thirds, 4 posterodorsal setae on basal two-thirds, the lower 2 stronger, 1 posterior strong seta on apical third, an excavation on anterior-anterodorsal surfaces, 1 anterodorsal, 1 dorsal and 1 posterodorsal preapical setae and 1 anteroventral, 1 posteroventral 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, a group of posterior setulae at base and few long posteroventral setulae on apical fourth; hind tibia with 5–6 long and weak subequal anteroventral setae on apical two-thirds, an anterodorsal row of short setae on basal two-thirds ending with 2 stronger ones, 1 strong posterodorsal seta on apical third, 3 weak posterior setae on basal third, 1 dorsal and no anterodorsal preapical setae and 1 posteroventral apical seta; 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 5–6 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 and ventral surfaces; 3–4 strong setae on basicosta.
Abdomen. With lateral tuft of setulae on syntergite 1+2; tergites 3 to 5 with setae laterally; sternite 1 setulose; posterior margin of sternite 5 concave and with setae (Fig. 71).
Terminalia. Cercal plate with 2 setae ventrally; surstylus with setae basally and apically (Figs 72–73); aedeagal apodeme short; aedeagus bare; basiphallus long; gonopod with 2 long and strong setae on basal third; paramere with some setae apically (Fig. 74).
Female. Body length: 6.0 mm; wing length: 6.0 mm.
Similar to male, differing as follows: eyes separated at level of anterior ocellus by about 0.33 of head width; fronto-orbital plate with 5 proclinate setae, the uppermost one weaker, and 1 reclinate seta; pedicel with 2 setae and a few setulae; mid femur without a tubercle at anterior to posterodorsal apex, with just 1 or 2 short and fine setae; mid tibia without an anterior comb-like row; hind tibia with 4 long and weak subequal anteroventral setae on apical two-thirds, shorter than in male; hind tarsus with strong setae ventrally.
Ovipositor. Tergite 7 like 2 rods, posteriorly with 2 plates with 4 setae; tergite 8 like 2 rods, posteriorly with 2 plates with long spines; sternite 7 like a single rod, posteriorly with 3 plates with setae; sternite 8 like 2 rods, posteriorly with 2 plates with 4 setae; epiproct longer than broad, anteriorly deeply incised, with 4 setae; hypoproct with many setae; cercus cylindrical and long (Figs 75–76).
Material examined. UGANDA: Ruwenzori Range, Mobuku Valley, 7,300 feet, xii.1934 – i.1935, F.W. Edwards, 1 Ƌ and 1 ♀ syntypes (BMNH); West Ruwenzori, 8,000–9,000 feet, vii.1946, van Someren, 2 ƋƋ (BMNH); West Ruwenzori, 6,000 feet, vii.1945, van Someren, 1 Ƌ (BMNH).
Distribution. AFROTROPICAL: Democratic Republic of Congo, South Africa, Uganda.
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 pages 49-51, DOI: 10.11646/zootaxa.4163.1.1, http://zenodo.org/record/259278