Titanogrypa (Cucullomyia) alvarengai
Creators: name: Barbosa, Taciano M.
name: Mello-Patiu, Cátia A.
name: Vasconcelos, Simão D.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Titanogrypa
Titanogrypa alvarengai

description: Titanogrypa (Cucullomyia) alvarengai (Lopes, 1976)   
(Figure 3)  
 Cucullomyia alvarengai Lopes, 1976b:752. Type locality: Brazil, Roraima, Surumu. Titanogrypa (Cucullomyia) alvarengai; Pape 1996: 431. (catalogue).   
 Type-material examined. HOLOTYPE ♂: BRAZIL, Roraima, Surumu, ix.1966, M. Alvarenga leg. (MNRJ) [lost].   
 Diagnosis. Scutellum with a lateral patch of whitish hair-like setulae; vesica with a proximal membranous portion as a low and short projection with a bilobed end in profile and sclerotised portion with squamose ornamentation (Figure 3 (e)); juxta with narrower distal portion, in lateral view (Figure 3 (e)); median stylus long with base broad and bilobed, and without apical spines; lateral styli with base slightly wider than the apex, with spines in the apical half (Figure 3 (d,e)).   
 Redescription. MALE (n = 1). Body length = 10.0 mm.   
 Head. Parafacial and fronto-orbital plates with golden pruinosity; fronto-orbital plate with sparse setulae; parafacial plate with row of setulae close to eye and measuring about 0.65 of distance between vibrissae; frons about 0.23 head width at level of ocellar triangle; frontal vitta entirely blackish; rows of frontal setae parallel except anteriormost 2 slightly divergent, 6–7 well-developed frontal setae reaching level of base of pedicel, the uppermost one shorter than the others; reclinate orbital seta present, proclinate orbital setae absent; outer vertical setae 0.5x inner vertical setae and divergent; ocellar setae as developed as upper frontals; ocellar triangle dark brown; postocellar and paravertical setae present; postocular area with golden pruinosity; gena with golden pruinosity at the top and silver at the bottom, black setae in anterior part and whitish setae close to occiput; postgena with silvery pruinosity and numerous whitish setae; face with silvery pruinosity; facial ridge black with silvery pruinosity, with short setulae in lower half; antenna dark brown, total length 0.84 of distance from insertion to vibrissal level, first flagellomere brown with grey pruinosity and approximately 2.5x longer than pedicel; arista long plumose on basal 2/3; palpus blackish.   
 Thorax. Black with silvery-grey pruinosity, postpronotum, notopleuron, anepisternum, anepimeron, and katepisternum with slightly yellowish pruinosity; chaetotaxy: acrostichals 0 + 1, dorsocentrals 3 (poorly differentiated) + 4 (2 anteriormost poorly differentiated, 2 posteriormost well developed), intra-alars 1 + 2, supra-alars 2 + 3, postpronotals 3, notopleurals 4; katepisternals 3; postalar wall setulose; postalar callus with 2 setae; scutellum with a patch of whitish hair-like setulae on lateral margin and reaching ventral part, pairs of basal, lateral and subapical setae (lateral pair shorter), a pair of preapical discal setae, and no apical setae; meral setae 8–9; proepisternum bare; prosternum setulose. Wing. Hyaline, with dark brown veins; tegula dark brown; basicosta yellowish; vein R1 bare; vein R4+5 with setulae dorsally on 1/2 of distance to crossvein r-m; cell r4+5 open at wing margin; third costal sector bare ventrally. Legs. Blackish-brown with silvery pruinosity, pulvilli yellowish-brown; mid femur with a row of 3 − 4 median anterior setae, 3 median anteroventral setae, 2 preapical posterior setae, 2 median setae and a ctenidium of 8 spiniform setae on posteroventral surface; mid tibia with 2 median anterodorsal, 1 basal and 1 median posterior setae, and 2 median posterodorsal setae; hind femur with a row of anterodorsal setae, a row of anterior setae in the proximal half, 1 apical dorsal and 1 apical posterodorsal seta, and rows of anteroventral and posteroventral setae; hind tibia with 1 median anterior seta, 1 basal, 1 median and 1 apical seta in the same position on the anterodorsal and posterodorsal surfaces, additionally 1 basal and 1 median anterodorsal seta; hind coxa and trochanter with normal setae.   
 Abdomen. Dark brown, except T4− T5 reddish brown, with golden pruinosity on lateral and dorsal spots; T1 + 2− T4 with lateral marginal setae; T3− T5 with a set of long setae wavy apex on the ventral surface, more numerous on T5; T4 with a pair of median marginal setae; T5 with a complete row of marginal setae (ca. 12); ST2-4 rectangular with long setae in distal half; ST5 deeply cleft with short base, long and narrow arms, longer setae at base and at arm apex (Figure 3 (a)).   
 Terminalia. Reddish brown, syntergosternite 7 + 8, epandrium and surstylus yellowish brown; epandrium with a pair of developed dorsal setae; surstylus short and clavate, with a slight swelling of the posterior margin and apical setae (Figure 3 (b)); cercal prongs narrow and parallel in posterior view, with distal end slightly enlarged and rounded in profile (Figure 3 (b)); pregonite long and broad, with spatulate apex (Figure 3 (c)); postgonite 0.5x the pregonite, with a long median setae and small setulae (Figure 3 (c)); basiphallus about 4x paraphallus length, paraphallus with 2 dorsal keels (Figure 3 (c)); vesica with a proximal membranous portion as a low and short projection with a bilobed end in profile and sclerotised portion with squamose ornamentation (Figure 3 (e)); juxta as two lobes, with narrower distal portion, in lateral view (Figure 3 (e)); median stylus long with broad base and bilobed, and without apical spines; lateral styli with base slightly wider than the apex, with spines in the distal half (Figure 3 (d,e)).   
FEMALE. Described and illustrated in Lopes (1976).  
  Distribution (Neotropical).  Brazil (Roraima).   
 Comments. Titanogrypa (C.) alvarengai closely resembles T. (C.) pedunculata in the shape of vesica, pregonite and surstylus (Figures 1 (b,c,e), 3(b,c,e)), as detailed under T. (C.) pedunculata. This species differs from other congeneric species mainly by the unique shape and ornamentation of the vesica and the shape of the juxtal lobes (Figure 3 (e)).
description: Published as part of Barbosa, Taciano M., Mello-Patiu, Cátia A. & Vasconcelos, Simão D., 2021, Revision of the New World subgenus Titanogrypa (Cucullomyia) (Diptera: Sarcophagidae), with a reassessment of diagnostic characters, pp. 305-340 in Journal of Natural History 55 (5 - 6) on pages 323-325, DOI: 10.1080/00222933.2021.1902587, http://zenodo.org/record/5473916