Mesembrinella semiflava Aldrich, 1925

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 : 89-90

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.5587028
persistent identifier	https://treatment.plazi.org/id/03DA87E6-0F62-FF8C-FF19-B9F2371AFC5C
treatment provided by	Plazi
scientific name	Mesembrinella semiflava Aldrich, 1925
status

Treatment

( Figs 47–48 View FIGURES 47–52 , 137–138 View FIGURES 135–144 , 211 View FIGURES 209–215 , 254 View FIGURES 252–265 , 297 View FIGURES 294–299 , 341 View FIGURES 326–349 , 383 View FIGURES 370–400 , 426 View FIGURES 424–438 , 466 View FIGURES 465–469 )

Mesembrinella semiflava Aldrich, 1925: 14 . Holotype male (USNM), examined photographically. Type locality: La Suiza de Turrialba, Costa Rica.

Huascaromusca semiflava: Kosmann et al. (2013: 77) ; Wolff & Kosmann (2016: 867) View Cited Treatment ; Wolff et al. (2017: 253) View Cited Treatment ; Marinho et al. (2017: tab. 1).

Mesembrinella semiflava: Cerretti et al. (2017 : tab. 2).

Diagnosis. A medium-sized fly averaging 10.6 mm (9–12/5) in length; ppn with 2x 2 setae; subcostal sclerite bare; outer posthumeral seta absent; wing hyaline; T1+2 and anterior third or more of T3 yellow-orange; femora orange; katepisternum 2:1, often with a second small seta posteriorly.

Redescription. Male. Head. Frons 0.043 (0.04–0.05/3) of head width at narrowest. Fronto-orbital silvery when viewed from above, pale orange when viewed from below; frontal setae ascending about halfway to vertex; frontal vitta orange, obliterated about 40% of distance to vertex; parafacial slender, silvery when viewed from above, orange below; gena pale orange with silvery tomentum and with a few dark setae anteriorly, with pale fine setae posteriorly; postgena yellowish with pale tomentum and golden setae; occiput with shiny black upper edge, remainder with silvery tomentum and fine tan setae; median occipital sclerite shiny black; antenna: pedicel and first flagellomere yellow-orange, arista brown; palpus typical; ocellar triangle medium-sized, anterior ocellus 1.5x size of posterior ocelli; supravibrissal setae weak, clustered at base of facial ridge.

Thorax with whitish tomentose stripes; pleura all orange; chaetotaxy: ac 0:1, dc 2:3, ia 0, ph 0, ppn 2x 2, kat 2:1 [may have an extra weak posterior seta; this condition is variable but fairly common], horizontal portion of meral setae composed of only a couple of setae, 1 pair converging ap, sa absent, 1 lat, 1 stout bas, 1 weak pb, 1 disc; subscutellum weakly developed; spiracles small, yellow-orange; legs: trochanters and femora orange, tibiae and tarsi brown. Wing hyaline, faintly yellowish, slightly darker yellow along costa; subcostal sclerite bare; basicosta yellow, tegula orange; section IV 0.14 of section III; disc of both calypters pale yellow; rim of upper calypter dark with pale setae, rim of lower calypter pale with long golden setae.

Abdomen. T1+2 yellow-orange, anterior 2/3 of T3 yellow-orange, rear 1/3 of T3 darker, often with inverted V pattern mid-dorsally; T4–5 shiny blue-purple with whitish tomentum; T1+2 with cluster of stout lateral marginal setae and single seta posteriorly; T3 with lateral marginal seta; T4–5 each with row of marginal setae; disc of T5 with mid-dorsal horizontal row of stout setae, rest of disc with sparse, fine setae. Terminalia in lateral view with surstylus straight, parallel-sided, cercus with apical hook ( Fig. 47 View FIGURES 47–52 ); in posterior view, cerci broad at base, tapering to tip ( Fig. 48 View FIGURES 47–52 ); phallus in lateral view with short stout epiphallus ( Fig. 137 View FIGURES 135–144 ); in dorsal view, hypophallic lobes slightly expanded with coarse serrations ( Fig. 138 View FIGURES 135–144 ). T6, STS7+8, pre- and postgonite, ejaculatory sclerite and ST6 as in Fig. 211 View FIGURES 209–215 ; ST2–5 as in Fig. 254 View FIGURES 252–265 .

Female. Similar to male except frons 0.194 (0.18–0.20/5) of head width at narrowest and abdomen lacking arrow-like mid-dorsal black area on T3 (found in some males), that area orange. T6 of OV shape; T7 continuous, narrowed midway; T8 thinned and translucent midway; epiproct bilobed ( Fig. 297 View FIGURES 294–299 ); ST6–8 and hypoproct as in Fig. 341 View FIGURES 326–349 ; spermathecae filiform ( Fig. 383 View FIGURES 370–400 ); ST1–5 as in Fig. 426 View FIGURES 424–438 .

Type material examined. HOLOTYPE ♂ ( Costa Rica , Cartago; USNM; examined photographically: Fig. 466 View FIGURES 465–469 ), labeled: COSTA RICA / La Suiza ’23 [= 1923] / Pab. Schild; 16 III [apparently day and month]; AL Melander / Collection / 1961; USNMENT / 01295434; Mesembrinella / semiflava / Ald ..

PARATYPE: Costa Rica. 1 ♀, La Suiza, Pablo Schild , 28.ii.1923, paratype 26799 ( USNM) .

Additional material examined. Costa Rica, Cartago. 1 ♂*, Quebrada Segunda, P.N. Tapanti , 1250 m, iii.1992, L_N_194000 560000, G. Mora ( INBIO) ; 1 ♀ ♦ ( TLW286 ) , Turrialba P.N., Barbilla Cerro Tigre , 1400 m, 16.iv.2002, B. Hernández ( INBIO) ; 1 ♀ ♦ ( TLW287 ) , Pejibaye Estación, Biológica Copal Sendero Garvula, Cima 1090 m, 8.iv.2005, B. Gambon ( INBIO) . Heredia. 1 ♀ *, Sarapiqui P.N., Braulio Carillo Send. El Saino al Rio Peje , 400–500 m, 18.ix.2005, M. Ballestero, A. Peraza ( INBIO) . Puntarenas. 1 ♂*, 1 ♂, San Vito, Rio Jaba , 8°46ʹN 82°57ʹW, 1100 m, 24.i.1998, D.M. Wood ( CNC) GoogleMaps ; 1 ♀, Est. Altamira Sendero al Rio Platanillal , 1100 m, 21.ii–16iii. 1972, R. Villalobos ( INBIO) . Ecuador, Pichincha. 1 ♀, Maguipucuna Biol. Res. , 0.12°N 78°. 63°W, 24–25.ii.1996, P. Hibbs ( LACM) GoogleMaps .

Distribution. Costa Rica, Ecuador.

Remarks. Three specimens were extracted; the DNA recovered was of too low quality to obtain good barcodes, therefore they were not included in the NJ analysis.

USNM	Smithsonian Institution, National Museum of Natural History
CNC	Canadian National Collection of Insects, Arachnids, and Nematodes
LACM	Natural History Museum of Los Angeles County

Copyright notice

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Taxonomy

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