Review of the genus Hylcalosia Fischer (Hymenoptera, Braconidae, Alysiinae), with description of four new species from China
Author
Zhu, Jiachen
Author
Achterberg, Cornelis Van
Author
Chen, Xue-Xin
text
Zootaxa
2018
2018-08-29
4462
4
547
565
journal article
29383
10.11646/zootaxa.4462.4.7
604d73e2-d3e2-4673-a31d-8da79bc6d6c2
1175-5326
1441855
FFE1C5A9-E523-4027-A63C-76C487A3B1AF
Hylcalosia poricrenalata
sp. nov.
Figs. 5–6
Type
material
.
Holotype
,
♀
(
ZJUH
), “
[SE.
China
:]
Zhejiang
,
Longquan
,
Mt. Fengyang
, 22–24.?.1982,
Song Qisheng, No.
826585”
.
Paratype
:
1♀
(
ZJUH
),
Fujian
,
Mt. Meihua
,
1100–1400 m
, 23–24.?.1988,
Fan Xiangjiang, No.
886654.
Diagnosis.
Body (except head) black (
Fig. 5A
); head transverse and head reddish-yellow; eye 1.2 × longer than temple in dorsal view (
Fig.
6I
); eye in lateral view 1.1 × higher than wide (
Fig. 6K
); frons mainly smooth, rugulose near antennal sockets and densely punctate laterally (
Fig.
6I
); vertex and temple smooth (
Fig.
6I
); face rather convex medially, densely and coarsely rugose-reticulate with transverse striation laterally (
Fig. 6J
); clypeus subtriangular, protruding forward, densely and finely reticulate-punctate (
Fig. 6J
); mandible rugose and with 4 teeth or lobes (
Fig. 6J
); notauli crenulated, distinctly impressed on disc, but absent posteriorly (
Fig. 6C
); mesoscutum smooth and with sparse setae anteriorly; medio-posterior depression short, densely crenulated (
Fig. 6C
); precoxal sulcus crenulate (
Fig. 6D
); metapleuron with dense punctures (
Fig. 6D
); surface of propodeum reticulate-rugose, areola absent (
Fig. 6E
); length of pterostigma 5.4 × as long as its maximum width (
Fig. 6A
); hind coxa finely punctate (
Fig. 5A
); metasoma longitudinally striate and some reticulate-rugosity between striae, length of first tergite 0.85 × its apical width (
Fig. 6F
); setose part of ovipositor sheath 0.6 × as long as fore wing (total visible sheath 0.7 ×), and 1.5 × as long as hind tibia (
Fig. 6H
).
Description.
♀
, length of body
8.2 mm
, of fore wing
7.7 mm
.
Head. Transverse, width of head 1.7 × its lateral length (
Fig.
6I
), and 1.5 × wider than mesoscutum; antenna incomplete, with 18 remaining segments, third segment (including annellus) 0.8 × longer than fourth segment, length of third and fourth segments 2.0 and 3.3 × their width, respectively (
Fig. 6G
); length of maxillary palp 1.4 × height of head; eye in dorsal view 1.2 × as long as temple (
Fig.
6I
); eye in lateral view 1.1 × higher than wide (
Fig. 6K
); frons mainly smooth, rugulose near antennal sockets and densely punctate laterally (
Fig.
6I
); vertex and temple smooth (
Fig.
6I
); OOL:diameter of ocellus:POL= 18:7:3; face 2.7 × wider than high, rather convex medially, densely and coarsely rugose-reticulate with transverse striation laterally (
Fig. 6J
); clypeus small, subtriangular, protruding forward, densely and finely reticulate-punctate (
Fig. 6J
); malar space absent; mandible with 4 teeth or lobes, enlarged apically, dorsal tooth enlarged, lobe-shaped (
Fig. 6L
), ventral tooth medium-sized and lobe-shaped, ventral carina protruding, middle tooth curved (
Fig. 6M
), medial length of mandible 1.7 × its maximum width.
FIGURE 5.
Hylcalosia poricrenulata
sp. nov.
, ♀, holotype, habitus, lateral aspect.
Mesosoma. Length of mesosoma 1.6 × its height (
Fig. 6D
); pronope round and deep; medio-anteriorly and posteriorly pronotum distinctly crenulate (
Fig. 6D
); epicnemial area widely crenulate; precoxal sulcus long and crenulated, nearly complete but not reaching middle coxa; pleural sulcus crenulated ventrally; episternal scrobe medium-sized and round; metapleuron densely punctate (
Fig. 6D
); notauli crenulated, distinctly impressed on disc; mesoscutum smooth and with sparse setae anteriorly; medio-posterior depression short, densely crenulated; scutellar sulcus deep and narrow, with 5 short carinae, sulcus 4 × wider than its maximum length; scutellum smooth and rather flat, with long setose (
Fig. 6C
); surface of propodeum densely and coarsely reticulate-rugose, areola absent (
Fig. 6E
).
Wings (
Figs 6
A-B). Pterostigma 5.4 × as long as its maximum width, r:3-SR:SR1 = 5:13:30; 1-SR+M slightly sinuate; SR1 straight;
r nearly
equal to the width of pterostigma; cu-a weakly antefurcal; 1-CU1:2-CU1 = 1: 20; 3- CU1 longer than CU1b; 2-SR:3-SR:r-m = 28:19:12; m-cu slightly postfurcal, sinuate and converging to 1-M posteriorly; first subdiscal cell 2.9 × as long as wide; M+CU1 sclerotized. Hind wing: M+CU: 1-M:1r-m = 30:16:13; m-cu weakly antefurcal.
FIGURE 6
.
Hylcalosia poricrenulata
sp. nov.
, ♀, holotype.
A
, fore wing; B, hind wing;
C
, mesosoma, dorsal aspect;
D
, mesosoma, lateral aspect;
E
, propodeum and first metasomal tergite, dorsal aspect;
F
, propodeum and metasoma, dorsal aspect;
G
, basal segments of antenna, lateral aspect;
H
, apex of ovipositor, lateral aspect;
I
, head, dorsal aspect;
J
, head, anterior aspect;
K
, head and palpi, lateral aspect;
L
, mandible, full view on first and second teeth;
M
, mandible, full view on third and fourth teeth;
N
, outer hind femur, hind tibia and hind tarsal claw, lateral aspect.
Legs. Hind coxa finely punctate, without ventro-basal tubercle; tarsal claws moderately robust, longer than arolium (
Fig. 6N
); length of femur, tibia and basitarsus of hind leg 4.5, 6.5 and 5.0 × their width, respectively; apical appendages of hind tarsal segments absent, segments ventrally with dense bristles (
Fig. 6N
).
Metasoma. First tergite moderately widened from base to apex, its apical width 1.7 × its basal width, length of first tergite 0.85 × its apical width, with distinct dorsal carinae fused in basal half, medially convex (
Fig. 6E
); dorsope present (
Fig. 6E
); median length of second tergite 0.75 × its basal width, 0.65 × its maximum posterior width, 1.07 × length of third tergite (
Fig. 6F
); combined length of second and third tergites 1.3 × maximum width; setose part of ovipositor sheath 0.6 × as long as fore wing (total visible sheath 0.7 ×), and 1.5 × as long as hind tibia (
Fig. 6H
).
Colour. Black (
Fig. 5
); head reddish yellow; pterostigma and veins brown; wing membrane slightly infuscated.
Variation. Body length:
6.1–8.2 mm
, length of fore wing
5.8–7.7 mm
.
Comparative diagnosis.
This species is similar to
H. hymaenei
Belokobylskij
, but differs by having a short and densely crenulated medio-posterior depression of mesoscutum (
versus
simple and long in
H. hymaenei
); vein cu-a of fore wing antefurcal (
versus
postfurcal); second tergite of metasoma 1.1 × as long as third tergite (
versus
distinct longer than third tergite); and hind coxa densely punctate (
versus
smooth).
Etymology
. Named “
poricrenulata
” because of the crenulated medio-posterior depression: “porus” is Latin for “pit” and “crena” is Latin for “notch”.