Revision of the New World subgenus Titanogrypa (Cucullomyia) (Diptera: Sarcophagidae), with a reassessment of diagnostic characters Author Barbosa, Taciano M. Author Mello-Patiu, Cátia A. Author Vasconcelos, Simão D. text Journal of Natural History 2021 2021-06-11 55 5 - 6 305 340 http://dx.doi.org/10.1080/00222933.2021.1902587 journal article 10.1080/00222933.2021.1902587 1464-5262 5473916 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)).