Oxysarcodexia Townsend, 1917 (Diptera: Sarcophagidae) - a centennial conspectus
Author
Souza, Carina Mara De
carina_mara@yahoo.com.br
Author
Pape, Thomas
tpape@snm.ku.dk
Author
Thyssen, Patricia Jacqueline
carina_mara@yahoo.com.br
text
Zootaxa
2020
2020-08-31
4841
1
1
126
journal article
8542
10.11646/zootaxa.4841.1.1
18306272-d3ad-494e-a630-cf9f40132d2f
1175-5326
4405603
F55A3BE7-673C-4D46-9FC4-D5B5C7041DC0
Oxysarcodexia xon
(
Dodge, 1968
)
(
Figs 287–289
)
Xarcophaga xon
Dodge, 1968: 449
;
Panama
,
Canal Zone
,
Barro Colorado Island
.
Holotype
male in UKAL (examined from photographs).
Diagnosis.
[Based on the original description (
Dodge 1968
), on the diagnosis given by
Lopes (1975c)
, and on photographs provided by courtesy of Dr. Michael Engel and Dr. Caroline Chaboo (UKAL).] Male. Length 5.0–6.0 mm. Postocular plate with pale golden pollinosity. Ocellar bristles weakly developed. Thorax and abdomen with silvery pollinosity, although T5 presents yellowish pollinosity, more evident laterally. Three well-differentiated post-sutural dorsocentral bristles. Apical scutellar bristles absent. T3–4 with 1 pair of median marginal bristles. ST5 with deep median V-shaped cleft and short prolongations. Cercus straight (lateral view), with expanded obliquely cut apex. Cercus with bristles ventrally over full length. Pregonite with expanded base and gradual narrowing at apex; unicolorous. Postgonite with expanded base and sudden narrowing at apex; unicolorous. Distiphallus with serrated margin, lateral expansions, rounded apex and slightly sinuous dorsal outline. Vesica symmetrical; distal lobes well developed, with filaments, tapering, membranous, without spines.
Remarks.
Lopes (1975c)
treated
Xarcophaga
as a synonym of
Oxysarcodexia
, but he was undecided whether or not the grouping of species presenting an apical enlargement of the distiphallus, i.e., a distal widening of the juxta, should have status as a valid genus.
Dufek & Mulieri (2017)
also pointed out that species included in this group share more elongate and narrow male cerci, a more elongate phallus, and juxta folded further backwards posteriorly. See remarks under
O. ariozanoi
. Female unknown.
Distribution.
NEOTROPICAL.
Brazil
(
Rio de Janeiro
),
Panama
.
Biology.
Unknown.
Type material examined.
No specimens were examined directly, but photographs of the
holotype
were provided by courtesy of
Dr. Michael Engel
and
Dr. Caroline Chaboo
(
UKAL
)
.