The New World ant parasitoid genus Orasema (Hymenoptera: Eucharitidae)
Author
Baker, Austin J.
Author
Heraty, John M.
text
Zootaxa
2020
2020-11-30
4888
1
1
84
journal article
9442
10.11646/zootaxa.4888.1.1
da69a4c8-2962-4d6d-9abf-627b77bb9116
1175-5326
4297699
574A35A5-A551-4A7E-B2BC-481D703B1BE7
Orasema spyrogaster
n. sp.
urn:lsid:zoobank.org:act:
FE10364A-DC30-4644-844F-051495D785A4
(
Fig. 34
)
Diagnosis.
Distinguished from
O. johnsoni
by features given in the key.
FIGURE 34
.
Orasema spyrogaster
. Holotype female (UCRCENT00540573):
A
, habitus, lateral;
B
, head, anterior;
C
, mesosoma, lateral;
D
, antenna;
E
, ovipositor and valvifer, lateral;
F
, mesosoma, dorsal;
G
, propodeum, posterior.
Description. Female.
Length
2.5–3.3 mm
(
Fig. 34A
).
Color.
Scape brown; flagellum dark brown. Coxae brown with iridescence.
Head
(
Fig. 34B
). HW:HH = 1.2–1.3; face smooth; eyes covered in long, erect setae, IOD:EH = 1.3–1.4; MS:EH = 0.6–0.7; malar depression absent. Mandibular formula 3:2. Temples present, angulate. Flagellum with 8 funiculars, FL:HH = 1.6–1.7; anellus disc-shaped; F2L:F2W = 2.3–2.6, F2L:F3L = 1.3–1.4; following funiculars subequal in length, gradually broader (
Fig. 34D
).
Mesosoma
(
Fig. 34C, F
). ML:MH = 1.5–1.8. Mesoscutal midlobe smooth; notauli shallow. Scutoscutellar sulcus narrow; frenal line indistinct; axillular sulcus indicated by a strong longitudinal carina. Propodeal disc broadly rounded (
Fig. 34G
). Prepectus smooth. Mesepisternum weakly areolate laterally, smooth ventrally, nearly straight anterior to mid coxa. HCL:HCW 1.9–2; HFL:HFW 4.5–4.6. FWL:FWW 2.5–2.6, FWL:ML = 2.1–2.2; entirely densely setose. Hind wing costal cell entirely setose.
Metasoma.
PTL:PTW = 1.6–1.8, PTL:HCL = 0.8–1.0, lateral margin rounded. Antecostal sulcus foveate to smooth posteriorly; acrosternite posteriorly rounded.
Male.
Unknown.
Hosts.
Unknown.
Plant associates.
Unknown.
Distribution
(
Fig. 32
).
Brazil
: PA, RR. Collected in April, December.
Material examined.
Holotype
.
BRAZIL
.
Roraima
:
Amajari
,
Serra do Tepequem
,
3
°
44’24”N
,
61
°
45’0”W
,
1-15.iv.2016
, Rafael et al., Malaise [
♀
, deposited in INPA: UCRCENT00504573]
.
Paratype
.
BRAZIL
.
Par
:
Utinga
,
Belem
,
1
°
25’12”S
,
48
°
26’24”W
,
xii.1966
,
S.J. Oliveira
[
1♀
, BLCU: UCRCENT00251376 (former
AEIC
specimen)]
.
Etymology.
From Greek
spyr
meaning “basket and
gaster
meaning “stomach in reference to the odd basketlike structure of the valvifer.
Discussion.
In all other species of
Orasema
the valvifer is invariable, being apically rounded with long thin setae covering the surface (
Fig. 33E
), whereas
O. spyrogaster
uniquely has thick cuticular projections (or digits) at the apex giving it a comb-like appearance, as well as having long thin setae covering the surface (
Fig. 34E
).