shape♀ 3.0 - 3.5 mm, ♂ 3.1 - 3.3 mm. [T5]. ♀: 3.0-3.5, ♂: 3.3 - 3.5 mm [T14].
colorThe body is black [T14].
head
shapeHead 1.4 times as wide as pronotum, behind eyes widened (♂ widened or not widened), width 1.5 times length and 1.2 times height. Temples 1.2 times as long as transverse eye diameter. Base of ocellar triangle greater than distance from it to eye plus one diameter of ocellus. Distance between posterior ocelli 3 times diameter of ocellus. Longitudinal diameter of eye twice transverse diameter and 3 times height of malar space. Height of face 2/3 width and 2/3 longitudinal diameter of eye. Distance between tentorial pits 1.5-1.7 times distance from pit to eye [T5]. Head roundly narrowed behind eyes, 1.4 times as wide as mesonotum, 1.5 times as wide as long, 1.2 times as wide. Temples 1.2 times as long as transverse eye diameter. Base of ocellar triangle larger than OOL plus one ocellus diameter. POL is 3 times the diameter of the ocellus. The longitudinal diameter of the eye is twice the transverse one. Face width 1.5 times its height. The longitudinal diameter of the eye is three times the malar space [T14]. Head behind the eyes with dilated temples [T14, key].
sculpture
color
antenna
shape ♀Antennae 21-22-segmented. Length of 3rd segment 3.5 times width and length of segments in apical half of flagellum equalling their width [T5][T14].
shape ♂Antennae 25-segmented [T5]. Antennae 21-22-segmented; length of segments at apical part of antenna equal to their width [T14].
color
mesosoma
shapeMesosoma length 1.7–1.8 times its height. Propodeum with transverse carina and small rectangular lateral teeth [T5][T14].
sculpture
color
legs
shape
sculpture
color♀: The apices of fore femora, fore tibia entirely, and also basal half of mid femora [tibiae ?] and middle of hind tibia brownish yellow. ♂ Midtibia and hindtibia sometimes totally dark brown [T5]. ♂: The legs are dark-colored for the most part, the hind femora are black [T14]. ♀: The hind femora are [mostly ?] black. Hind tibiae dark-colored [T14 key].
wings
shapeMarginal cell twice as large as 2nd submarginal, 1-R1 slightly shorter than or as long as pterostigma; 3-SR vein as long as r or slightly longer, 0.25-0.29 length of SR1 and 0.4-0.5 length of 2-SR; SR1 with weak sinuate curve [T5].
colorThe wings are slightly darkened [T14].
metasoma
shapeMetasoma oblong-oval, length 2.2 times width and 3.5 times height. Sometimes apex of metasoma (including holotype) with small tooth [T5]. ♂: Metasomal length 2-2.2 times its width [T14].
sculptureMetasoma with rather numerous (at base about 15), sinuate, strongly anastomosing in its basal 1/3, longitudinal rugae, barely extending beyond its middle [T5][T14]
color
♀ ovipositorThe ovipositor is hidden or sometimes protrudes to the length of the hind metatarsus [T14].
♂ apertureAperture oval, occupying about 0.25-0.30 width of metasoma and width twice height. Aperture sometimes reddish. [T5]. Apical aperture is located in the middle of the posterior surface of the metasoma and occupies 0.2-0.3 times the width of the metasoma [T14].
Microchelonus (Stylochelonus) subpedator Tobias, sp. n.
Material. Holotype ♀, Kunashir Id., Sernovodsk, LIX.1976 (Damlovich). Paratypes: 2 ♀ s and 1 ♂ with data as in holotype; 2 ♀ s and 1 ♂, same locality, 27.VIII.1973 (Kasparyan); 1 ♀, Shikotaa. Id., near Malokuril'sk, Mataputan R., 18.V Ill. 1973 (Kasparyan).
Description. ♀. Length of body 3-3.5 mm. Head 1.4 times as wide as pronotum, behind eyes widened, width 1.5 times length and 1.2 times height. Genae 1.2 times as long as eye. Base of ocellar triangle greater than distance from it to eye by diameter of ocellus. Distance between posterior ocelli 3 times diameter of ocellus. Longitudinal diameter of eye twice transverse diameter and 3 times height of cheek. Height of face 2/3 width and 2/3 longitudinal diameter of eye. Distance between tentorial pits 1.5-1.7 times distance from pit to eye. Antennae 21-22-segmented. Length of 1st flagellar segment 3.5 times width and length of segments in apical half of flagellum equalling their width. Length of mesosoma 1.7-1.8 times height. Propodeum with transverse ridge distinct in middle, strongly effaced on sides and with small rectangular protruding teeth. Radial cell twice as large as radiomedial, anterior margin slightly shorter than or as long as pterostigma; 2nd segment of radial vein as long as 1st segment or slightly longer, 0.25-0.29 length of 3rd segment and 0.4-0.5 length of 1st radiomedial vein; 3rd segment of radial vein with weak sinuate curve. metasoma oblong-oval, length 2.2 times width and 3.5 times height. Sometimes apex of metasoma (including holotype) with small tooth. Ovipositor protruding as far as length of 1st tarsal segment, or hidden.
metasoma with rather numerous (at base about 15), sinuate, strongly anastomosing (in its basal 1 / 3) longitudinal rugae barely extending beyond its middle.
Apices of forefemora, foretibia, basal half of midfemora, and middle of hindtibia yellowish brown. Wings weakly darkened, costal vein, pterostigma, and veins in apical half of wing brown and in basal half pale brown
♂. Length of body 3.1-3.3 mm. Head behind eyes widened or not widened. AAO oval, occupying about 0.25-0.30 width of metasoma and height twice width. Antennae 25-segmented. Midtibia and hindtibia sometimes totally dark brown. AAO sometimes reddish
Data used in the multi-access key
These data are collected from the species descriptions and redescriptions, from published figures and photographs and from own measureements and observations. For a description of the different variables and value classes see this pdf.
morphology
basic information
female
male
body length (mm):
(2.9) 2.9 - 3.5 (3.6)
(2.9) 2.9 - 3.5 (3.6)
number of antennal segments:
(20) 20 - 22 (23)
(24) 24 (26)
head, dorsal view
Head width : length
very narrrow
very narrrow
Temples narrowing - widening
parallel, widening
parallel, widening
Eye length : temple length
0.75 - 1.0
0.75 - 1.0
Roundness temple
very strong, strong
very strong, strong
POL : OD
3 - 4, > 4
3 - 4, > 4
Ocellar triangle shape
narrow, wide, very wide
narrow, wide, very wide
Excavation of head
15 - 25%, 25 - 35%
15 - 25%, 25 - 35%
head, lateral view
Head height : length
---
---
Eye height : length
short, long
short, long
Temple length : eye length
---
---
head, frontal view
Head width : height
very narrow, narrow
very narrow, narrow
Face width : height
very narrow, narrow
very narrow, narrow
Eyes converging ventrally
distinctly converging
distinctly converging
EH : MSL
long, very long
long, very long
Clypeus width : height
quadrangular
quadrangular
Clypeus extending above bottom of eyes
above
above
Tentorial pits
large, very large
large, very large
Shape of lower margin clypeus
convex
convex
antennae
Antennal shape
---
filiform, not widened
Segment 3 length : width
medium, long
---
Penultimate segment length : width
short
---
Length of antenna : length of body
---
---
mesosoma, lateral view
Length : height
long
long
transverse carina
present
present
lateral teeth
weak, small, short
weak, small, short
mesosoma, ventral view
Prepectal carina lamelliform
indistinct
indistinct
legs
Hind femur length : width ratio
---
---
Hind tibia length : hind tarsus length ratio
---
---
Hind tibia (longest) spur length : metatars length ratio
wings
Vein 1-R1 length : pterostigma length
medium, long
medium, long
Vein r length : vein 3-SR length
short
short
Shape vein SR1 (straight / concave / convex)
slightly convex, convex
slightly convex, convex
S-shape vein SR1
not S-shaped, apically convex
not S-shaped, apically convex
cell M : cell Sm2
Sm2 medium
Sm2 medium
Pterostigma length : width ratio
long
long
Angle between radial vein (r) : vein 1-R1
blunt
blunt
metasoma, dorsal view
Length : width ratio of metasoma
medium, long
medium, long
Shape of metasoma
widest towards apex, tapering to base
widest towards apex, tapering to base
metasoma, lateral view
Length : height ratio of metasoma
medium, long
medium, long
posterior : anterior height ratio of metasoma
small, medium
small, medium
Position of maximum height
medium-posterior, posterior
medium-posterior, posterior
metasoma, ventral view
Metasoma posteriorly curved forwards
---
---
male apical aperture
Aperture width : metasoma width
no aperture
small, medium
Aperture shape
n. a.
(nearly) round, oval
Median process shape
n. a.
vertical carina
sculpture
head
general coarseness
---
---
clypeus
coarseness punctation
---
---
density punctation
---
---
face
sculpture type
---
---
sculpture direction
---
---
vertex and temple
sculpture type
---
---
mesonotum
sculpture type
---
---
scutellum
middle
---
---
lateral
---
---
metasoma
base - mid sculpture
longitudinally rugose / rugose-striate
longitudinally rugose / rugose-striate
sculpture at apex
rugulose
rugulose
coarse / fine boundary
base (to 50%), mid (50 - 70%)
base (to 50%), mid (50 - 70%)
color
head
mandibles color pattern
---
---
palpi, lightest color
---
---
antennae
scapus, lightest color
black, dark brown
black, dark brown
segment 3 and 4, lightest color
black, dark brown
black, dark brown
legs
fore coxae lightest colour
dark
dark
fore femur lightest colour
medium light
medium light
fore femur color pattern
tip light
tip light
hind femur lightest colour
dark
dark
hind femur color pattern
entirely dark
entirely dark
hind tibia lightest colour
medium light
dark, medium light
hind tibia color pattern
narrow light ring
entirely dark, narrow light ring
hind basitarsus lightest colour
dark
dark
hind tarsus segment 2-3 lightest colour
dark
dark
wings
middle veins lightest colour
medium dark, medium light
medium dark, medium light
basal veins lightest colour
medium light
medium light
metasoma
metasoma colour pattern
entirely dark
entirely dark
metasoma lightest colour
dark
dark
metasoma base, colour pattern
entirely dark
entirely dark
metasoma base, light spots
n.a.
n.a.
metasoma base, light band
n.a.
n.a.
Chelonus subpedator in published keys
T5: Tobias 1995a
A new subgenus and species of the genus microchelonus (hymenoptera, braconidae) with some comments on synonymy.
