Mesembrinella semihyalina Mello, 1967

Whitworth, Terry L. & Yusseff-Vanegas, Sohath, 2019, A revision of the genera and species of the Neotropical family Mesembrinellidae (Diptera: Oestroidea), Zootaxa 4659 (1), pp. 1-146 : 131-132

publication ID	https://doi.org/ 10.11646/zootaxa.4659.1.1
publication LSID	lsid:zoobank.org:pub:57309E14-0330-4ED7-BCDA-355EE6618215
DOI	https://doi.org/10.5281/zenodo.5587042
persistent identifier	https://treatment.plazi.org/id/03DA87E6-0FB8-FF56-FF19-BBFA3713FE39
treatment provided by	Plazi
scientific name	Mesembrinella semihyalina Mello, 1967
status

Treatment

( Figs 87–88 View FIGURES 87–92 , 177–178 View FIGURES 173–182 , 231 View FIGURES 229–235 , 274 View FIGURES 266–279 , 318 View FIGURES 318–323 , 362 View FIGURES 350–369 , 403 View FIGURES 401–410 , 447 View FIGURES 439–453 , 488 View FIGURE 488 )

Mesembrinella semihyalina Mello, 1967: 73 . Holotype male (FIOC), not examined. Type locality: Parque Sooretama , Espirito Santo, Brazil.

Mesembrinella semihyalina: Toma & Carvalho (1995: 138) ; Kosmann et al. (2013: 78); Wolff (2013: 121); Marinho et al. (2017: tab. 1); Cerretti et al. (2017: tab. 2).

Diagnosis. A medium-sized fly averaging 12.2 mm (11–13/5) in length. Wing infuscated; supravibrissal setae brown; subcostal sclerite setose; wing with section IV 0.23 of section III; male phallus in dorsal view with weak serrations ( Fig. 178 View FIGURES 173–182 ); legs entirely orange. Male frons about 0.06 of head width at narrowest; epandrium, cerci and surstyli as in Figs. 87–88 View FIGURES 87–92 . Female T6 of WU shape ( Fig. 318 View FIGURES 318–323 ).

Redescription. Male. Head. Frons 0.063 (0.06–0.07/3) of head width at narrowest. Fronto-orbital and parafacial pale silvery when viewed from above, pale orange when viewed from below; frontal setae ascending halfway to vertex; frontal vitta dark orange, obliterated midway; gena pale orange with horizontal row of few dark setae anteriorly, otherwise with small dark setae; postgena pale yellow with fine yellow setae; occiput with pale yellow tomentum and yellow setae; median occipital sclerite shiny black; antenna orange, first flagellomere with pale tomentum, arista dark orange; palpus typical; eye with median facets 3x size of lateral facets; ocellar triangle medium-sized, anterior ocellus 2x size of posterior ocelli; short row of tan supravibrissal setae on facial ridge ascending, about 1/6 of distance to antennal base.

Thorax. Dorsum with alternating dark brown areas with yellowish tomentose stripes; pleura dark orange with whitish tomentum; spiracles small, pale orange; chaetotaxy: ac variable, 2:1or 2:2, sometimes one or more setae missing, dc 2:3, ia 1, ph 1, ppn 3x 3, kat 1:1, meral setae typical, 1 pair of parallel ap, sa and lat absent, 1 bas, 1 weak pb, 1 disc; subscutellum moderately developed; spiracles medium-sized, pale yellow; legs entirely orange. Wing faintly infuscated along distal 2/3 of costa through R 2+3 and along veins; basicosta and tegula pale orange; section IV 0.23 of section III; upper calypter with pale disc and dark rim with reddish setae; lower calypter with pale disc and rim, rim with long pale setae.

Abdomen. T1+2 dark orange; T3–T5 shiny blue with patchy white tomentum; rear margins of T4–5 with stout setae; disc of T5 with dense, medium-long, fine setae only. Terminalia in lateral view with surstylus broad, with gradual backward curve, cercus with apical hook ( Fig. 87 View FIGURES 87–92 ); in posterior view, base of cerci broad, relatively short and stout, narrowing apically to chisel-like tip ( Fig. 88 View FIGURES 87–92 ); phallus in lateral view with epiphallus short and stout with slight backward curve ( Fig. 177 View FIGURES 173–182 ); in dorsal view, hypophallic lobes slightly rounded with shallow, moderate serrations ( Fig. 178 View FIGURES 173–182 ). T6, STS7+8, pre- and postgonite, ejaculatory sclerite and ST6 as in Fig. 231 View FIGURES 229–235 ; ST2–5 as in Fig. 274 View FIGURES 266–279 .

Female. Similar to male except frons 0.248 (0.23–0.26/5) of head width at narrowest. T6 of WU shape; T7 continuous; T8 narrowed midway; epiproct divided midway ( Fig. 318 View FIGURES 318–323 ); ST6–8 and hypoproct as in Fig. 362 View FIGURES 350–369 ; spermathecae filiform ( Fig. 403 View FIGURES 401–410 ); ST1–5 as in Fig. 447 View FIGURES 439–453 .

Type material examined. PARATYPE: Brazil, Distrito Federal. 1 ♂, Parque Sooretama (Cupido), E. Santo, L. Travis, H. Travis, II/III-948 ( CNC) .

Additional material examined. Brazil, Alagoas. 1 ♀ ♦ ( TLW392 ) , Murici , 26–30.vii.2012, S.S. Nihei, P.G. Dias, D.M. Alcantara, C.S. Costa ( NHMUK) ; 1 ♂♦, same data except ( TLW392 ) ( NHMUK) . São Paulo. 1 ♂*, 11.ii.1923, L.G. Saunders ( NHMUK) . Rio de Janeiro. 1 ♂*, Angra dos Reis, E. de Rio ( CNC) ; 1 ♀, Angra do Reis , 29.v.1972, H.S. Lopes ( CNC) . Rondônia. 1 ♀ *, 3 ♀♀, Caucalândia, 10°32ʹS 62°48ʹW, 21.x.1991, 1 ♀ ♦ ( TLW432 ) GoogleMaps , J. McDonald ( MEM) ; 1 ♀ *, 62 km, SW Ariquemes nr Fzda. Rancho Grande , 6–15.xii.1990, D.A. Rider, J.E. Eger ( FSCA) .

Distribution. Brazil.

Remarks. Bonatto (2001) argued that this species is a synonym of M. abaca [here considered a synonym of M. socors ], but M. semihyalina has a distinct, dark infuscation in cells r 1 and r 2+3, while M. socors has, at most, a faint yellowing in the r 1 cell along the costa. The known range of M. semihyalina is Brazil, whereas M. socors is known only from Central America. Two specimens of M. semihyalina ( TLW 392 and TLW 432) were barcoded; they clustered together, close to M. anomala and distant from M. socors (genetic distance 12%) ( Fig. 488 View FIGURE 488 ), supporting the morphological differentiation between these two species.

WU	Wayland University
CNC	Canadian National Collection of Insects, Arachnids, and Nematodes
NHMUK	Natural History Museum, London
MEM	University of Memphis
FSCA	Florida State Collection of Arthropods, The Museum of Entomology

Copyright notice

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Taxonomy

Kingdom	Animalia
Phylum	Arthropoda
Class	Insecta
Order	Diptera
Family	Calliphoridae
Genus	Mesembrinella