A revision of the genera and species of the Neotropical family Mesembrinellidae (Diptera: Oestroidea) Whitworth, Terry L. Yusseff-Vanegas, Sohath Zootaxa 2019 2019-08-26 4659 1 1 146 Whitworth Whitworth & Yusseff-Vanegas 2019 [151,571,693,720] Insecta Calliphoridae Mesembrinella Animalia Diptera 119 120 Arthropoda species bullata sp. nov.  ( Figs 67–68, 157–158, 221, 264, 308, 352, 393, 437, 473, 488)   Diagnosis.A small fly averaging 9.4 mm(9–10/5) in length. Thorax, subshining dark blue and abdomen shiny bluepurple, both covered with whitish tomentum; ppn bluish with 3x3 setae; wing hyaline; disc of T5 with some fairly stout, disorganized setae, more or less at middle of disc. Epandrium, cerci and surstyli distinctive: cerci in posterior view with broad basal half and sharply narrowed in distal half ( Fig. 68). Female terminalia as in Fig. 308.  Description. Male.Head. Frons broad, 0.09 (0.08–0.09/2) of head width at narrowest, almost as broad as width of first flagellomere; fronto-orbital pale with whitish tomentum; lower half of frontal vitta orange, upper half black, frontal vitta significantly narrowed midway; fronto-orbitals broad, frontal setae ascending about 65% of distance to vertex; parafacial pale orange. Gena with horizontal row of 3–4 stout, black setae and a few sparse short setae, anterior 1/2–2/3 of gena orange, posterior 1/2–1/3 with dense silvery tomentum; postgena with silvery tomentum and covered with pale, silky setae; occiput black with silvery tomentumand dense, silky golden setae; median occipital sclerite with silvery tomentum in upper third, lower 2/3 subshining black; palpus typical; pedicel and first flagellomere orange; eye with median facets slightly larger than lateral facets; ocellar triangle small, anterior ocellus 1/3 larger than posterior ocelli; supravibrissal setae dark brown, ascending about 1/5 of distance to antennal base. Thorax. Dorsum and pleural area of thorax dark blue with silvery tomentum, and with faint pale presutural tomentose stripes [some specimens]; chaetotaxy: ac 2:1, dc 2:3, ia 0, ph 1, ppn 3x3, kat 1:1, meral setae in unusual pattern, in straight line, row with slight bend anteriorlyabove, 1 pair of crossed ap, sa absent, 2 lat, 1 stout bas, 1 pb weak, 1 disc; subscutellum weakly developed; spiracles medium-sized, brown to yellow-brown; legs entirely dark brown with tips of femora orange. Wing hyaline, faintly yellow, veins darker at base, basal cells faintly darkened; subcostal sclerite bare; basicosta tan with pale setae, tegula brown; section IV 0.13 of section III; calypters with tan discs and brown rims with brown setae. Abdomen purple, subshining, with pale tomentum; T1+2 and T3 each with a pair of lateral marginal setae; T4 with row of stout, erect marginal setae on posterior margin; T5 disc with some fairly stout, unordered setae together with dense, short, fine setae. Terminaliain lateral view with surstylus very short, slightly curved backward, cercus much longer ( Fig. 67); in posterior view, basal half of cerci bulbous, distal half abruptly narrowing to tip ( Fig. 68); phallus in lateral view: base of epiphallus broad with moderate backward curve ( Fig. 157); in dorsal view, hypophallic lobes narrow ( Fig. 158); T6, STS7+8, pre- and postgonite, ejaculatory sclerite ST6 and hypandrium as in Fig. 221; ST1–5 with broad sclerites ( Fig. 264).  Female.Similar to male except frons 0.234 (0.20–0.26/5) of head width at narrowest. T6 of RVshape; T7 continuous, rear edge recessed midway; T8 as separate sclerites ( Fig. 308); ST6–8 and hypoproct as in Fig. 352; spermathecae filiform ( Fig. 393); ST1–5 as in Fig. 437.  Type material.  HOLOTYPE♂ ♦*( TLW437) (Bolivia, Chapare; CNC; Fig. 473), labeled: BOLIVIA Cbba Chapare/ Villa Turnarí-Cochabamba/ road - km  362 - 1550m/ Pruett& Wood  24 III.95; HOLOTYPE/ Mesembrinella/ bullata / T.L. Whitworth.   ALLOTYPE ♀ ♦* ( TLW438): same data as holotype except km 365,  3–10.xii.1996, G. & M. Wood( CNC).    PARATYPES: Bolivia,  Cochabamba. 2 ♀♀, Chapare, Villa Turnarf-Cochabambaroad, km 362, 1550 m,  24.iii.1995, Pruett& Wood( CNC).   La Paz.1 ♂*, 1 ♀*,  1 ♀, Sud Yungas, Punte Villa, hotel Tamampaya,  4300 ft.,  19–24.v.1989, flight intercept trap, J. Eger( FSCA).   Distribution. Bolivia.  Remarks.The allotype( TLW438) was barcoded and was recovered in a distinct cluster near  M. unisetaand  M. lara( Fig. 488). The terminalia of this species resemble Bonatto’s (2001: fig. 103) sketch of what he called “  xanthorrhina”. In both specimens the base of the cercus is much enlarged, though in Bonatto’s sketch the cercus is sinuous, whereas in  M. bullata  sp. nov.it is gently curved forward ( Fig. 67). The setae on the disc of T 5 in  M. bullatacould be confused with the stout setae on the disc seen in the  M. aeneiventrisspecies-group. However, the setae in  M. bullataare weaker and denser and not in a prominent row. Though the new species groups near two species in the  M. aeneiventrisgroup, its surstylus is distinctly curved backward. For now, we place it in the  M. bicolorgroup pending a more in-depth genetic analysis.  Etymology.The species name  bullata, derived from the Latin bullatus(inflated), refers to the unusual bulbous basal half of the cerci when seen in posterior view ( Fig. 68). 2351006125 1995-03-24 CNC Pruett & Wood Bolivia 956 Cbba Chapare Villa Turnari-Cochabamba 119 120 TLW437 1 holotype 2351006137 [199,1401,1988,2015] 1996-12-03 1996-12-10 1996-12-03 CNC G. & M. Wood Bolivia 956 Cbba Chapare Villa Turnari-Cochabamba 119 120 TLW438 1 1 allotype 2351006117 1995-03-24 CNC Chapare & Villa Turnarf-Cochabamba & Pruett & Wood Bolivia Cochabamba 120 121 2 2 Cochabamba paratype 2351006110 [552,759,188,215] Bolivia La Paz 120 121 1 1 La Paz paratype 2351006102 1989-05-19 1989-05-24 1989-05-19 FSCA Sud Yungas & Punte Villa & Tamampaya & J. Eger Bolivia 1311 120 121 1 1 La Paz paratype