Revision of Stenetra Masi, 1931 (Hymenoptera: Chalcidoidea: Pteromalidae)
Author
Tselikh, Ekaterina
Author
Burks, Roger
text
Zootaxa
2020
2020-04-02
4759
2
191
208
journal article
10.11646/zootaxa.4759.2.3
819b234f-6385-4412-a51b-d7a82f490ac4
1175-5326
3737407
A2B2B004-8F86-4245-B29F-5FE60C0B2870
Stenetra parvula
Tselikh & Burks
sp. nov.
(
Figs 70–77
)
urn:lsid:zoobank.org:act:
5175E3C6-81BE-4C2C-B772-76B858ABA67B
Description.
Female
. Body length 3.3–
3.2 mm
; fore wing length 1.9–2.0 mm. Head, mesosoma and propodeum black, the propodeum with dark blue metallic lustre, metasoma in dorsal view dark brown, in lateral view black with metallic green and diffuse coppery lustre; scape, pedicel, second and third segments of clava yellowish-brown, F1–F6 and first segment of clava brown; all coxae and hind femur black with dark blue metallic lustre; fore and mid femora brown, all tibiae apically yellowish-brown and basally yellow; all tarsi yellow except last segment brown; fore wing with brownish tint, venation yellowish-brown; ovipositor sheath black. Head in dorsal view 2.4–2.56× as broad as long and 1.22–1.23× as broad as mesoscutum; in frontal view 1.27–1.31× broader than high. POL 1.95–2.0× OOL. Eye height 1.48–1.5× eye length and 1.88–1.92× as long as malar space. Distance between antennal toruli and lower margin of clypeus 0.8× distance between antennal toruli and median ocellus. Clypeus radially striate, its lower margin emarginate. Antenna with scape 0.84–0.88× as long as eye height and 1.26–0.31× as long as eye length, not reaching anterior edge of median ocellus; pedicel 2.1–2.3× as long as broad and 1.1–1.27× as long as F1; combined length of pedicel and flagellum 0.9–0.93× breadth of head; flagellum almost filiform; anelli equal in length; F1 1.32–1.56× as long as broad and as long as F2, with 2 rows of dense sensilla, F2–F6 longer than broad; clava 2.1–2.26× as long as broad. Mesosoma 1.29–1.3× as long as broad. Scutellum finely reticulate, 0.87–0.88× as long as broad. Propodeum medially 0.42–0.45× as long as scutellum; median carina present, plicae absent; nucha short and alutaceous, 0.5× length of propodeum. Fore wing 2.46–2.5× as long as maximum width; basal cell pilose; speculum open; M 1.0–1.04× as long as P and 1.45–1.6× as long as S; stigma with short uncus. Metasoma lanceolate, 1.6–1.66× as long as mesosoma and head; Mt8 2.9–3.5× as long as broad and 1.1–1.35× as long as Mt7. Ovipositor sheath projecting slightly beyond apex of metasoma.
FIGURES 61–69
.
Stenetra miyazakii
Tselikh & Burks
sp. nov.
(♀ holotype).
61,
stigmal vein and stigma of fore wing;
62,
fore wing;
63,
antenna;
64,
head frontal view;
65,
head dorsal view;
66,
propodeum, dorsal view;
67,
metasoma dorsal view;
68,
habitus, dorsal view;
69,
habitus, lateral view.
FIGURES 70–77
.
Stenetra parvula
Tselikh & Burks
sp. nov.
(♀ holotype).
70,
antenna;
71,
fore wing;
72,
head frontal view;
73,
head dorsal view;
74,
propodeum, dorsal view;
75,
metasoma dorsal view;
76,
habitus, dorsal view;
77,
habitus, lateral view.
Material examined.
Holotype
:
♀
,
USA
,
“USA: GA,
McIntosh Co.
,
Sapelo Island
20.VI.-18.VII 1987
BRC Hym. Team, FIT live oak forest”, “
HOLOTYPE
Stenetra parvula
♀
Tselikh, Burks
” (
CNC
).
Paratypes
:
1 ♀
,
USA
, “
USA
: GA,
McIntosh Co.
,
Sapelo Island
20.
VI
.-18.VII 1987
BRC Hym. Team, FIT live oak forest”, “
PARATYPE
Stenetra parvula
♀
Tselikh, Burks
” (
ZISP
)
;
1 ♀
, “
USA
: GA,
McIntosh Co.
,
Sapelo Island
9-21.IX 1987
BRC Hym. Team, FIT live oak forest,
MT
”, “
PARATYPE
Stenetra parvula
♀
Tselikh, Burks
” (
CNC
)
;
1 ♀
, “
USA
: MO,
Wayne Co.
Williamsville
15-30.
VI
.1988
J.
T
. Becker”, “
Stenetra
det.
R
.
A. Burks
2004
”, “
PARA- TYPE
Stenetra parvula
♀
Tselikh, Burks
” (
CNC
)
,
1 ♀
,
MEXICO
,
“
Jacala
, 7
Mi.
NE. 4600’
Hidalgo
,
Mex.
27-VII- 1954
J.G. Chillcott
”, “
Stenetra
det.
R
.
A. Burks
2004
”, “
PARATYPE
Stenetra parvula
♀
Tselikh, Burks
” (
CNC
)
.
Distribution.
USA
(
Georgia
,
Missouri
),
Mexico
.
Etymology.
The name is derived from the Latin word parvus, meaning “small”, referring to the small body sizes of this species.
Comments.
Stenetra parvula
is similar to
S. californica
by females having a pilose basal cell, but differ by having the pedicel longer than F1, Mt8 2.9–3.5× as long as broad, and the head and mesosoma with black coloration. Females of
S. parvula
are also very similar to
S. longuncus
and
S. miyazakii
, the differences between these species given in the key.