Mesembrinella lara ( Bonatto, 2005 )

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: 79-80

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Mesembrinella lara ( Bonatto, 2005 )


Mesembrinella lara ( Bonatto, 2005) 

( Figs 41–42View FIGURES 41–46, 131–132View FIGURES 125–134, 208View FIGURES 202–208, 251View FIGURES 239–251, 294View FIGURES 294–299, 338View FIGURES 326–349, 380View FIGURES 370–400, 423View FIGURES 411–423, 463View FIGURES 460–464, 488View FIGURE 488)

Huascaromusca lara Bonatto in Bonatto & Marinoni, 2005: 888  . Holotype male (USNM), examined. Type locality: Yacambu National Park , Lara, Venezuela.

Huascaromusca lara: Kosmann et al. (2013: 77)  ; Wolff et al. (2017: 253); Marinho et al. (2017: tab. 1); Velásquez et al. (2017: 108).

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

Diagnosis. A small fly, averaging 8.75 mm (8–9/4) in length; thorax subshining blue with heavy whitish tomentum; abdomen brighter, shiny blue with faint whitish tomentum. Postpronotal lobe 2x 2; subcostal sclerite bare; outer posthumeral present; acrostichal setae 0:0; pleural area of thorax blue-black.

Redescription. Male. Head. Frons broad, 0.06/1 of head width at narrowest [only holotype male was available to measure]; fronto-orbital and parafacial golden when viewed from above, orange when viewed from below; frontal vitta orange, obliterated by broad fronto-orbitals about 1/3 of way up frons; gena orange with faint whitish tomentum and single row of stout setae from postgena through to bottom of parafacial; postgena orange with white tomentum and fine yellow setae; occiput with pale tomentum and weak yellow setae; median occipital sclerite shiny dark orange; palpus typical; pedicel and first flagellomere orange with pale tomentum, arista dark brown; eye with median facets about 2x size of lateral facets; frontal setae ascending about halfway to vertex; ocellar triangle medium-sized; facial ridge with just a few black supravibrissal setae in short row below.

Thorax. Dorsum with pale bluish tomentum and a pair of narrow tomentose stripes aligned with dorsocentral setae; pleural area like dorsum; chaetotaxy: ac 0:0, dc 2:2, ia 0, ph 1, ppn 2x 2, kat 2:1, meral setae long and slender, as an inverted L with horizontal portion very short, composed of one or two setae, 1 pair converging ap, 1 stout bas, 1 disc, no other setae; subscutellum weakly developed; spiracles yellow-orange; legs: femora orange, tibiae mostly brown, tarsi darker brown. Wings hyaline; disc of upper calypter pale with brown rim and fringe of brown setae; disc and rim of lower calypter pale, rim with long pale setae; subcostal sclerite orange and bare; basicosta and tegula orange; section IV 0.15 of section III.

Abdomen bright shiny blue with faint whitish tomentum. T1–5 each with a pair of stout lateral marginal setae, T4 and T5 with rows of stout setae on posterior margins; disc of T5 with mid-dorsal horizontal row of stout setae, rest of disc with sparse, fine setae. Terminalia. Lateral view: surstylus parallel-sided with slight forward curve, cercus with apical hook, epandrium large ( Fig. 41View FIGURES 41–46); in posterior view, base of cerci broad, distal 1/3 gradually narrowing to fine tip ( Fig. 42View FIGURES 41–46); phallus in lateral view with epiphallus of medium width and with moderate backward curve ( Fig. 131View FIGURES 125–134); in dorsal view, hypophallic lobes narrow ( Fig. 132View FIGURES 125–134); T6, STS7+8, pre- and postgonite and ejaculatory sclerite as in Fig. 208View FIGURES 202–208; ST5 as in Fig. 251View FIGURES 239–251.

Female. Similar to male except frons 0.245 (0.23–0.25/4) of head width. T6 of RV shape with suture midway; T7 divided midway; T8 as two separate sclerites ( Fig. 294View FIGURES 294–299); ST6–8 and hypoproct as in Fig. 338View FIGURES 326–349; spermathecae filiform ( Fig. 380View FIGURES 370–400); ST1–5 as in Fig. 423View FIGURES 411–423.

Type material examined. HOLOTYPE ♂* ( Venezuela , Lara; USNM; Fig. 463View FIGURES 460–464), labeled: VENEZUELA: Lara, / Parque Nac. / Yacambu / 6 – 8 – IV – 1981; A.S. Menke / L. Hollenberg / Collectors  ; HOLOTYPE / Huascaromusca lara  . / S.R. Bonatto det. [red label]; USNMENT01288293.

Remarks. Bonatto & Marinoni (2005) provided added locality data for the specimen: 7°16ʹN 68°24ʹW. The specimen is in fairly good condition and is typical of other material examined in this study. It had been dissected by Bonatto; the rear half of T4 and all of T5 were removed and the terminalia were separated and placed in a vial under the specimen (except rear part of T4, which is missing).

PARATYPE: Venezuela. 1 ♂, Parque Nac. Yacambu, 6–8.iv.1981, A.S. Menke & L. Hollenberg ( USNM)  .

Additional material examined. Venezuela, Miranda. 1 ♀ ♦* ( TLW270)  , San Antonio de los Altos, IV, IC, 10°24ʹN 66°58ʹW, 1680 m, iv.2003, Y. Velásquez ( MIZA)GoogleMaps  ; 1 ♀, El Hatillo, Las Marías , 1350 m, 26.v.1976, F. Kaletta ( MIZA)  ; 1 ♀, Falcon Curimagus , 1640 m, 22.III.1987, cloud forest, R. Miller & R.L. Stange ( FSCA)  .

Distribution. Venezuela.

Remarks. A single specimen ( TLW 270) was barcoded; it was recovered in a distinct group close to M. uniseta  and M. bullata  ( Fig. 488View FIGURE 488). More specimens are needed to fully resolve relationships within this group.


Collection of Leptospira Strains


Smithsonian Institution, National Museum of Natural History


Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez


Florida State Collection of Arthropods, The Museum of Entomology














Mesembrinella lara ( Bonatto, 2005 )

Whitworth, Terry L. & Yusseff-Vanegas, Sohath 2019

Huascaromusca lara Bonatto in Bonatto & Marinoni, 2005: 888

Bonatto, S. R. & Marinoni, L. 2005: 888

Huascaromusca lara: Kosmann et al. (2013: 77)

Wolff, M. & Ramos-Pastrana, Y. & Marinho, M. A. T. & Amorim, D. 2017: 253
Velasquez, Y. & Martinez-Sanchez, A. I. & Thomas, A. & Rojo, S. 2017: 108
Kosmann, C. & Pinto de Mello, R. & Harterreiten-Souza, E. S. & Pujol-Luz, J. R. 2013: 77