Complex diversity in a mainly tropical group of ant parasitoids: Revision of the Orasema stramineipes species group (Hymenoptera: Chalcidoidea: Eucharitidae)
Author
Burks, Roger A.
Author
Heraty, John M.
Author
Dominguez, Chrysalyn
Author
Mottern, Jason L.
text
Zootaxa
2018
2018-03-26
4401
1
1
107
journal article
30421
10.11646/zootaxa.4401.1.1
d89af63d-c093-4908-bd61-2b26133bb7d6
1175-5326
1207463
CE7364CD-1A9E-45F2-ABA1-FB574F03BCBE
Orasema torrensi
Burks, Heraty & Dominguez
n. sp.
urn:lsid:zoobank.org:act:3F693B74-E2BB-41FA-B7C6-AACABF2B3107 (
Figs 235–244
)
Diagnosis.
Coloration dark green. Mesosoma reticulate but clypeus smooth. Petiole areolate-reticulate. Hind femur with dark brown area.
This species differs from other reticulate species in its dark green coloration (
Fig. 235
), but also in having a smooth clypeus (
Fig. 236
).
Description. Female.
Length
3.6–3.7 mm
.
Color:
Head and mesosoma dark green. Scape yellow; pedicel brown; anellus yellowish brown; flagellum brown. Coxae dark green; fore femur mostly brown laterally, yellow medially and apically; fore tibia yellow; mid femur brown basally, yellow apically; mid tibia yellow; hind femur mostly brown, yellow apically; hind tibia yellow. Fore wing hyaline; venation pale brown. Petiole dark green; gaster dark brown.
Head:
Head in frontal view broadly subtriangular; head width:head height 1.2; face reticulate; scrobal depression shallow, laterally rounded, with transverse striae and finely reticulate sculpture; dorsal scrobal depressions absent; longitudinal groove between eye and torulus absent; eyes bare, inter-ocular distance:eye height 1.6; malar space:eye height 0.8; supraclypeal area longer than broad, mostly smooth, weakly sculptured dorsolaterally; clypeus smooth. Flagellum length:head height 1.2–1.3; F2 2.2–2.3× as long as broad, 1.1–1.2× as long as F3; following funiculars subequal in width, successively shorter.
Mesosoma:
Mesosoma length:height 1.2–1.3. Mesoscutal midlobe reticulate, with minute setae; lateral lobe reticulate medially, areolate-reticulate laterally. Axilla reticulate, dorsally rounded; mesoscutellar disc areolatereticulate; frenal line regularly foveate; frenum areolate-reticulate; axillular groove anteriorly narrow, broad and foveate posteriorly; axillula areolate-reticulate. Propodeum with irregular median carina; propodeal disc areolatereticulate; callus reticulate, with a few small setae. Mesepisternum areolate-reticulate to reticulate laterally, smooth ventrally, broadly rounded anterior to mid coxa. Upper mesepimeron smooth to weakly reticulate; lower mesepimeron smooth to weakly reticulate; transepimeral sulcus distinct. Metepisternum laterally reticulate. Hind coxa 1.8–1.9× as long as broad; hind femur 5.1–6.0× as long as broad. Fore wing 2.4–2.5× as long as broad, 2.3– 2.4× as long as mesothorax; stigma with 4 sensilla forming an L-shape. Hind wing costal cell with a broad bare area.
Metasoma:
Petiole cylindrical, linear in profile, 2.4–2.9× as long as broad, 1.1× as long as hind coxa, areolatereticulate, anterior carina strong. Antecostal sulcus crossed by carinae; acrosternite posteriorly angulate.
Male.
Length
2.7 mm
. Head width:head height 1.3; scape pale brown; flagellum length:head height 2.0, F2 2.5× as long as broad. Fore femur basally mostly brown, apically yellowish; fore tibia yellow; mid femur mostly dark brown basally, becoming yellow apically; mid tibia yellow; hind femur mostly brown, tips pale. Hind tibia mostly brown, tips pale. Petiole 7.2× as long as broad, petiole length:hind coxa length 2.4.
Distribution.
Argentina
(
Tucuman
).
FIGURES 235–240.
Orasema torrensi
. Holotype ♀:
235.
Habitus.
236.
Head.
237.
Antenna, with F2 plus pedicel, and F6–F7 inset.
238.
Mesosoma, dorsal view.
239.
Axillula.
240.
Stigma and postmarginal vein.
FIGURES 241–244.
Orasema torrensi
. Holotype ♀:
241.
Propodeum.
242.
Petiole. ♂:
243.
Antenna, with F2 and F6–F7 inset.
244.
Petiole, hind coxa.
Material
examined.
Holotype
:
ARGENTINA
:
Tucuman
:
Los Chorrillos
,
26°18'40"S
,
64°57'55"W
,
27.xi.2004
, P. Fidalgo—J.
Torréns
[
1 ♀
,
UCRCENT00436671
], deposited in
IFML
.
Paratypes
:
Los Chorrillos
,
26°18'40"S
,
64°57'55"W
,
12.xi.2003
, P. Fidalgo—J.
Torréns
[
1 ♀
,
IFML
:
UCRCENT00436661
]
.
Los Chorrillos
,
26°18'40"S
,
64°57'55"W
,
22.i.2004
, P. Fidalgo—J.
Torréns
[
1♂
,
UCRC
:
UCRCENT00169646
]
.
Etymology.
Named after Javier Torréns, an expert on the systematics of
Eucharitidae
.