Mesembrinella epandrioaurantia Whitworth

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: 60-64

publication ID

https://doi.org/10.11646/zootaxa.4659.1.1

publication LSID

lsid:zoobank.org:pub:57309E14-0330-4ED7-BCDA-355EE6618215

DOI

http://doi.org/10.5281/zenodo.5587009

persistent identifier

http://treatment.plazi.org/id/03DA87E6-0F01-FFEA-FF19-B8263672FED4

treatment provided by

Plazi

scientific name

Mesembrinella epandrioaurantia Whitworth
status

sp. nov.

Mesembrinella epandrioaurantia Whitworth   , sp. nov.

( Figs 31–32 View FIGURES 27–32 , 121–122 View FIGURES 115–124 , 203 View FIGURES 202–208 , 247 View FIGURES 239–251 , 291 View FIGURES 288–293 , 335 View FIGURES 326–349 , 420 View FIGURES 411–423 , 460 View FIGURES 460–464 , 488 View FIGURE 488 , 492 View FIGURES 489–497 )

Diagnosis. A small blue-black fly averaging 9.2 mm (8–11/5) in length. Abdomen with distinctive orange area on tip of T 5 in both sexes ( Fig. 492 View FIGURES 489–497 ) vs. tip of T5 and epandrium shiny blue in M. woodorum   sp. nov. Male with ST5 of distinctive shape ( Fig. 247 View FIGURES 239–251 ); epandrium, cerci and surstyli of distinctive shape ( Figs 31–32 View FIGURES 27–32 ).

Description. Male. Head. Frons 0.045 (0.04–0.05/5) of head width at narrowest, about equal to width of frontoorbital; fronto-orbital narrow and silvery; frontal vitta brown, significantly narrowed midway; frontal setae ascending about 60% of distance to vertex; parafacial bluish with silvery tomentum; gena and postgena bluish with silvery tomentum, most of gena with black setae, lower edge with pale setae; postgena entirely with pale setae; occiput with silvery tomentum and pale silky setae; median occipital sclerite shiny orange; palpus typical; antenna: pedicel and first flagellomere brown with whitish tomentum, setae on pedicel dark brown; eye facets small, median facets slightly larger than lateral facets; ocellar triangle medium-sized, anterior ocellus slightly larger than posterior ocelli; frontal ridge with only 2–3 stout supravibrissal setae at base.

Thorax. Dorsum and pleura bluish with pale tomentum forming faint stripes; chaetotaxy: ac 0:0, dc 1:2, ia 0, ph 1, ppn 2x 2, kat 1:1, meral setae typical, 1 crossed ap, 1 stout bas, 0 disc, usually no other setae on scutellum; subscutellum weakly developed; spiracles medium-sized and brown; anterior spiracular opening long and narrow, gradually widening above ( Fig. 6 View FIGURES 1–8 ); legs entirely brown except femora orange distally; tarsal claws brown with black tips, pads white. Wing hyaline with narrow yellowish area in costal cell near costa; basal cells and veins darkened; subcostal sclerite with pubescence only; basicosta and tegula brown; section IV 0.16 of section III; upper and lower calypters with rim and disc tan, small area of upper calypter whitish; rim of upper calypter with short reddish-brown setae, rim of lower calypter with long reddish-brown setae.

Abdomen bluish with white tomentum except tip of T5; disc of T5 with only weak, fine setae. Terminalia bright orange ( Fig. 492 View FIGURES 489–497 ); in posterior view, epandrium with broad suture midway ( Fig. 32 View FIGURES 27–32 ); epandrium, cerci and surstyli very unusual in shape; in lateral view surstylus long and slender, extending forward under epandrium and curving down and slightly backward; cercus short, slender and straight, widely separated from surstylus ( Figs 31–32 View FIGURES 27–32 ); phallus in lateral view with long, slender epiphallus gently curved backward ( Fig. 121 View FIGURES 115–124 ); in dorsal view with narrow hypophallic lobes ( Fig. 122 View FIGURES 115–124 ); T6, STS7+8, pre- and postgonite, ejaculatory sclerite and ST6 as in Fig. 203 View FIGURES 202–208 ; sternites unusual: ST3–4 small, ST 5 of unusual shape ( Fig. 247 View FIGURES 239–251 ).

Female. Similar to male except frons 0.186 (0.18–0.20/3) of head width at narrowest. T6 of OU shape, recessed posteriorly midway; T7 unusually wide, weakened midway; T8 as separate sclerites ( Fig. 291 View FIGURES 288–293 ); ST6–8 and hypoproct as in Fig. 335 View FIGURES 326–349 ; ST1–5 with ST2 large about 3x sclerite ST3 ( Fig. 420 View FIGURES 411–423 ).

Type material. HOLOTYPE ♂* ( Venezuela, Yaracuy; MJMO; Fig. 460 View FIGURES 460–464 ), labeled: Venezuela. Yaracuy / Cocorote Sector El / Candelo. 1650 m / 4–10/XI/2002 / 10°36ʹ886ʺN 68°82ʹ628ʺW; Cols: R. Briceño; A. / Chacón; J. Clavijo; F. / Díaz; R. Paz.; E. Arcaya; / L. Joly / Proyecto S 1-2000000479   ; HOLOTYPE / Mesembrinella   / epandrioaurantia / T.L. Whitworth.

ALLOTYPE ♀ ♦* ( TLW309): same data as holotype except 17–20.x.2001 ( MJMO).  

PARATYPES: Venezuela, Yaracuy. 1 ♂*, 2 ♂♂♦ ( TLW307, 310)   , 1 ♀, Cocorote , Sector El Candelo, 10°36ʹ886ʺN 66°82ʹ628ʺW, 1600 m, 4–10.xi.2002, R. Briceño et al. ( MJMO)   ; 2 ♂♂, 1 ♀ ♦* ( TLW308)   , same data except 17–20.x.2001 ( MJMO)   ; 1 ♂ ♦ ( TLW306)   , same data except 15–21.x.2001 ( MJMO)   ; 2 ♂♂, 1 ♀ *, Aragua, Colonia Tovar , 22.xii.1985, P. Kovarik ( TAMU)   ; 1 ♂, 2 ♀♀, same data except 2300 m, 10.iii.1996, sweep, steep forest trail, S.A. Marshall ( UGG)   .

Distribution. Venezuela.

Remarks. Five specimens ( TLW 306–310) were barcoded, and they all grouped together in our analysis ( Fig. 488 View FIGURE 488 ).

Etymology. The species name epandrioaurantia   refers to the bright orange tip of the abdomen in both sexes, especially distinctive in males, where the whole epandrium is orange. The name is a combination of the word epandrium and the Latin aurantium (orange).

OU

Fossil Catalgoue in the Geology Museum

MJMO

Universidad Centro Occidental, Decanato de Agronomia

TAMU

Texas A&M University

UGG

University of Guam