A revision of the genera and species of the Neotropical family Mesembrinellidae (Diptera: Oestroidea)
Author
Whitworth, Terry L.
Author
Yusseff-Vanegas, Sohath
text
Zootaxa
2019
2019-08-26
4659
1
1
146
journal article
25918
10.11646/zootaxa.4659.1.1
0cbe0b8e-2019-4f5a-8336-2d4d9fcd8bf6
1175-5326
3377239
57309E14-0330-4ED7-BCDA-355EE6618215
Mesembrinella brunnipes
Surcouf, 1919
(
Figs 65–66
,
155–156
,
220
,
263
,
307
,
351
,
392
,
436
,
488
)
Mesembrinella brunnipes
Surcouf, 1919: 78
.
Lectotype
female (MNHN), not examined. Type locality:
Bolivia
. [NB:
Guimar
„es (1977) noted that
Surcouf
did not select a
holotype
, so he designated a
lectotype
from one of three conspecific female
syntypes
from
Bolivia
.]
Mesembrinella brunnipes
:
Peris & Mariluis (1984: 260)
;
Kosmann
et al.
(2013: 78)
; Wolff (2013: 121);
Marinho
et al
. (2017
: tab. 1);
Cerretti
et al.
(2017
: tab. 2).
Diagnosis.
A fairly large brown fly averaging
12 mm
(11–13/3) in length. Postpronotal lobe
3x
3; stem vein bare dorsally; wing infuscated; dorsum of abdomen without pits; supravibrissal setae dark brown or black; subcostal sclerite setose; section IV of wing 0.31 of section III; mid and hind femora with basal 1/4–1/2 brown, apical 1/2–3/4 orange; whitish tomentum on abdomen uniform on T1+2–4 vs. the similar
M. townsendi
, which has pale tomentum in oblique streaks. This species resembles
M. bicolor
, but has wing with strong, dark infuscated area along costa to R
2+3
instead of wing hyaline with yellowish area along costa.
Redescription.
Male.
Head. Frons 0.02/1 of head width at narrowest. Fronto-orbital and parafacial pale orange with pale tomentum, frontal seta ascending about 1/3 of distance to vertex; frontal vitta orange, obliterated in upper 2/3; gena: anterior half orange with pale orange tomentum, posterior half orange with silvery tomentum; postgena orange with silvery tomentum; gena and postgena with dark setae, except rear edge of postgena with pale setae; occiput with pale gold tomentum and pale gold setae; median occipital sclerite shiny dark orange; antenna dark orange; palpus typical; eye with median facets about
3x
size of lateral facets; ocellar triangle small with ocelli about equal in size; supravibrissal setae dark, ascending about 1/5 of distance to antennal base.
Thorax. Dorsum shiny brown with pale tomentose stripes; pleura dark reddish with pale tomentum; chaetotaxy: ac 2:3, anteriormost postsutural setae may be lacking on one side, dc 2:3, ia 1, ph 1, ppn
3x
3, kat 1:1 or 2:1, meral setae typical, 1 ap converging slightly, sa absent, 2 very weak lat, 1 stout bas, 1 weak pb, 1 disc; subscutellum moderately developed; spiracles medium, pale yellow; legs brown except mid and hind femora with apical 1/4–1/2 orange. Wing heavily infuscated along anterior edge from costa to R
2+3
; subcostal sclerite with dark setae; basicosta and tegula orange; section IV 0.31 (
0.303
–0.313
/3) of section III; discs of calypters light tan; rim of upper calypter light tan with short reddish setae; rim of lower calypter yellow with long pale-yellow setae.
Abdomen. T1+2 yellow-brown, T3–5 purple-blue with pale tomentum, row of marginal setae on T4; T5 without marginal setae.
Terminalia
in lateral view with surstylus moderately curved backward (
Fig. 65
); in posterior view cerci short and stout (
Fig. 66
); phallus in lateral view with tiny, short epiphallus (
Fig. 155
); in dorsal view, hypophallic lobes rectangular with prominent coarse serrations along edge (
Fig. 156
); T6, STS7+8, pre- and postgonite, ejaculatory sclerite, ST6 and hypandrium as in
Fig. 220
; ST1–5 broad, as in
Fig. 263
.
Female.
Similar to male except frons 0.27 (0.26–0.28/2) of head width at narrowest. T6 of WV shape; T7 slen- der, divided midway; T8 as separate sclerites (
Fig. 307
); ST6–8 and hypoproct as in
Fig. 351
; spermathecae filiform (
Fig. 392
); ST1–5 as in
Fig. 436
.
Type material examined.
PARALECTOTYPE
:
Bolivia
.
♀
*,
“
Bolivien
,” [only country listed] (
USNM
)
.
Additional material examined.
Bolivia
,
La Paz
.
1 ♂♦* (
TLW430
)
,
Sud Yungas
,
Puente Villa
,
Hotel
Tamam- paya,
4300 ft
, 19–24–1989,
Flight intercept trap
,
J.E. Eger
(
FSCA
)
;
Peru
,
Cusco
.
1 ♀
♦* (
TLW429
)
,
Paucatambo
,
Puente
,
San Pedro
50 km
NW
Pilocapata
,
3.ix.1988
,
1600 m
,
A. Freidberg
(
LACM
)
;
1♀
, Cock-of-the
Rock Lodge
,
Loop Trail
,
13°3ʹ21ʺW
71°32ʹ46ʺW
,
1450 m
,
6.xii.2011
, dung bait, debu00340874,
S.A. Marshall
(
UGG
)
.
Distribution.
Bolivia
,
Peru
.
Remarks.
Two specimens (
TLW
429–430) were barcoded, and clustered together (
Fig. 488
).