Morellia (Parapyrellia) humeralis Stein 1918
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 humeralis

description: 2. Morellia (P.) humeralis (Stein, 1918)
(Figs 174–181)
Pyrellia humeralis Stein, 1918: 204. Type localities: BRAZIL, Teresopólis and Espírito Santo; PERU; BOLIVIA. Syntypes: 2 ƋƋ, 1 ♀, ZMHB (seen); 1 Ƌ, 2 ♀♀, NHMW (seen); 2 ƋƋ, 1 ♀, HNHM (destroyed 1956); none in SMT (Pont 2013: 80).
Redescription. Colour. Black, with blue reflections. Frontal vitta shining black on upper half; lower half of frontal vitta, parafacial, face and inner portion of gena light brown with grey pruinosity; outer portion of gena shining; antenna yellowish with grey pruinosity; pedicel yellow, basal half of arista yellow; palpus yellow; postpronotal lobe yellow; mesonotum with one silver-dusted central vitta along presutural acrostichals and halfway along postsutural acrostichals; legs brown; haltere yellow; calypters brownish, upper calypter on outer half white and opaque; wing yellowish, with dark markings on humeral cross-vein, subcostal apex (connected to a spot on r-m cross-vein), and on the apex of cell r1. Abdomen without pruinosity.
Male. Body length: 5.0–6.0 mm; wing length: 5.0 mm.
Head. Eyes bare, separated at level of anterior ocellus by 0.13–0.18 of head width; frons divergent towards lunule; ocellar triangle with a pair of setae and 2 pairs of setulae; 11 pairs of frontal setae; postpedicel 2.0–2.1 times the length of pedicel; pedicel with 1 seta and a few short setulae; arista plumose, with 14–15 cilia, bare apicad, and with some secondary plumes as far as level of 4th to 5th cilia; vibrissa shorter than arista; 1 supravibrissal seta, less than half the length of vibrissa, and a few setulae that extend to level of apical fourth of postpedicel; 5 subvibrissal setae followed by 8–10 genal setae. Palpus expanded at apex.
Thorax. Acrostichals 0+1; dorsocentrals 0+3; intra-alars 1+1; presutural 1; prealar 2, the second less than half as long as first supra-alar; supra-alars 2; postpronotals 4, the innermost weaker; notopleuron with 2 long, subequal setae and covered with ground-setulae; postalars 2; no intrapostalar; scutellum with 1 basal, 1 latero-discal and 1 apical pairs of strong setae, and latero-ventrally with many setae, the basalmost ones downcurved; postalar wall and suprasquamal ridge bare; proepisternal depression bare; proepimeron with 3 long setae; prosternum broad and bare; anepisternum with a posterior row of about 12 setae, with 2–3 weak setae upcurved on upper-anterior corner, and covered with long setulae; katepisternals 1+2; anepimeron extensively setulose; katepimeron with 1 or 2 setulae; anatergite bare; katatergite setulose. Legs: fore femur with a posterodorsal row of setae, a complete posteroventral row of setae, and a posterior row of setae on apical two-thirds; fore tibia with a dorsal row of very short and strong setulae, 1 dorsal, 1 posterodorsal and 2 posteroventral apical setae, and anterior surface with a ctenidium of golden setulae; fore tarsus with some long setae on basal segment; mid femur without a tubercle, with 2–3 agglutinated short spines at apex that continue as about 3 posterodorsal to posterior setae, and 6–8 ventral setae on basal half; mid tibia with 3 strong posterior setae, 1 on basal third, 1 on middle third and 1 on apical third, with 1 posterodorsal seta on apical third, a row of very short and strong dorsal setulae, and 2 anteroventral, 1 dorsal, 2 posterodorsal, 2 posteroventral and 2 ventral apical setae; hind femur with an anteroventral row of setae, strongest on apical third, an anterodorsal row of setae, a few posteroventral setulae on apical fourth, and 2 posterodorsal preapical setae; hind tibia with many long setae and setulae on anteroventral-posteroventral surfaces, 1 anterodorsal seta on middle third and 1 on apical third, a dorsal row of very short but strong setulae, 1 dorsal, 2 anterior and no anterodorsal preapical setae, 2 anteroventral, 1 ventral and no posteroventral apical setae, and a posterior brush-like ctenidium; hind tarsus with strong setae ventrally. Wing (Fig. 174) with a uniform covering of microtrichia; dm-cu almost straight; stem-vein bare before, and with 4 short setulae after, humeral cross-vein on dorsal surface, and ventrally with about 2 short setulae before, and bare after, humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 setulose from base to just after r-m on dorsal and ventral surfaces; 3 strong setae on basicosta.
Abdomen. With a lateral tuft of setulae on syntergite 1+2, tergites 3–5 with normal setulae; sternite 1 setulose; posterior margin of sternite 5 almost straight and with a few setae laterally (Fig. 175).
Terminalia. Apical third of cercal plate bare; cercal plate ventrally with 2 spinose setae; surstylus with many setulae and 1 seta on apical half (Figs 176–178); aedeagus with many spicules on anterior membrane of distiphallus; gonopod with 1 long and strong seta on basal third; paramere with some setae on apical half (Fig. 179).
Female. Body length: 5.5–6.0 mm; wing length: 5.0 mm.
Similar to male, differing as follows: frontal vitta on upper half and fronto-orbital plate black; lower half of frontal vitta reddish; parafacial, face and gena brownish-yellow; eyes separated at level of anterior ocellus by 0.32– 0.33 of head width; fronto-orbital plate with 3 proclinate and 2 reclinate setulae; mid femur without agglutinated setae but with 3–4 posterodorsal-dorsal setae; hind tibia without many long setae and setulae on anteroventralposteroventral surface.
Ovipositor. Tergite 6 shaped as 2 golf-club-like rods; tergite 7 as 2 rods, posteriorly with 2 plates with some small spines; tergite 8 as 2 broad rods, posteriorly with 2 plates with small spines; sternite 7 as 1 rod, posteriorly with 3 plates with many small spines; sternite 8 as 2 very small plates with very small setulae; epiproct with many small spines; hypoproct with many long setae; cercus cylindrical and long (Figs 180–181).
Material examined. BRAZIL: no further data, 2 Ƌ and 1 ♀ syntypes (NHMW); Espírito Santo, Linhares, v.1972, R.C. Elias, 1 Ƌ, 2 ♀♀ (MNRJ); Rio de Janeiro, Petrópolis, Alto da Mosela, ii.1956 and 1.ii–8.iii.1957, D. Albuquerque, 2 ƋƋ (MNRJ); PERU: Pachiteamündung [mouth of the River Pachitea], 18 & 23.xi.1903, W. Schnuse, 2 Ƌ syntypes (ZMHB); PERU, locality illegible, 22.x.1903, W Schnuse, 1 ♀ syntype (ZMHB).
Distribution. NEOTROPICAL: Peru, Bolivia, Brazil, Paraguay.
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 94-96, DOI: 10.11646/zootaxa.4163.1.1, http://zenodo.org/record/259278