shapeBody 4.2mm [T4][T6]. Body length 4.3 mm.[T14].
colorBody black [T14].
head
shapeTemples not more than 1.5 times as long as eye, not projecting angularly [T4]. The head is slightly roundly narrowed behind the eyes, its width is twice its length, 1.3 times its height. Temples equal in length to the transverse diameter of the eye. The longitudinal diameter of the eye is 3 times the malar space. The width of the face is twice its height. Proboscis weakly protruding [T14].
sculptureVertex finely striate transversely [T4]. The face is unevenly wrinkled, with rugae extending downward from the upper corners. Vertex finely transversely rugose behind ocelli [T14].
colorLabrum (usually hidden under clypeus) and palpi sometimes pale yellow, but usually dark-colored [T14].
antenna
shape ♀
shape ♂Antennae approximately 25-segmented [T4]. Antennae 27-segmented, equal to the total length of the head, mesosoma, and half of the metasoma [T14].
color
mesosoma
shapeMesosoma 1.5 times as long as high (Fig. 1) [T4][T14]. Propodeum without transverse carina, with very weak but wide lateral teeth [T14].
sculptureMesonotum almost entirely with coarse honeycombed sculpture, without distinct transverse rugae, matt or only weakly lustrous [T4]. Mesoscutum rather coarsely reticulate-rugose, with smoothed cell margins, before scutellum with longitudinal rugae [T14].
color
legs
shapeHind femora 3.5 times as long as wide [T4]. Hind femur 3 times as long as wide. Inner spur of hind tibia 0.4 times as long as 1st segment of hind tarsus. The hind tarsus is shorter than the hind tibia [T14]. Hind femur 3 times as long as wide [T6, key].
sculpture
colorHind tibia with wide yellow band in basal half [T14]. Legs mostly dark-colored, with yellow fore femora and tibiae [T14].
wings
shape1-R1 as long as pterostigma, its apex lying between pterostigma and wing-apex (Fig. 2) [T4]. The marginal cell of the fore wing 2.5 times as long as the 2nd submarginal cell, 1-R1 equal to the length of the pterostigma. 3-SR slightly shorter than r, 6 times shorter than SR1, 3 times shorter than 2-SR [T14]. 2nd submarginal cell short (length about 1.5 times its width), strongly narrowed forwards. 2-SR 3 times as long as 3-SR [T6].
colorBasal vein of forewing somewhat brown [T4]. Wings are slightly darkened [T14].
metasoma
shapeMetasoma with slightly convex lateral sides, with two oblique longitudinal carinae in its basal third, metasomal length twice its width, 2.5 times its height [T14].
sculptureMetasoma in basal half with distinctly wavy, longitudinal rugae [T4]. Metasoma in the basal half with longitudinal, tortuous and anastomosed rugae [T14].
color
♀ ovipositor
♂ apertureAperture oval, occuping not more than half the metasomal width [T4]. Aperture occupies 0.4 times the width of the metasoma; its median process is small, rounded at the apex. The aperture is oval, located below the middle of the metasoma, its height is 4 times less than the height of the metasoma, the width of the aperture is 2.5 times its height [T14]. Aperture occupying about 1/3 of metasoma width, its width 2.0-2.5 times its height [T6, key].
165. Aperture on apex of metasoma much smaller, occupies not more than half abdominal width.
169. Temples much shorter, not projecting angularly. Occiput significantly less emarginate.
181. Aperture on apex of metasoma much larger, oval.
182. Body large, 4—6. Antennae approximately 25-segmented. Vertex finely striate transversely
184. Aperture on apex of metasoma oval. Hind femora 3.5—4 times as long as wide. Mesonotum more distinctly sculptured at least laterally, matte or only weakly lustrous. Temples not more than 1.5 times as long as eye. Basal vein of forewing somewhat brown. Body small, 4—4.5.
185. Mesonotum almost entirely with coarse alveolar sculpture, without distinct transverse rugae. metasoma in basal half with distinctly wavy, longitudinal rugae. mesosoma 1.5 times as long as high (Fig. 196: 16). Hind femora 3.5 times as long as wide. Anterior margin of radial cell as long as stigma, its apex lying between stigma and wing-apex (Fig. 196: 17). Body 4.2. Moldavia ...M. scrobiculatus Tobias, sp. n.
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):
(4) 4 - 4.4 (4.5)
(4) 4 - 4.4 (4.5)
number of antennal segments:
16
(24) 24 - 27 (28)
head, dorsal view
Head width : length
wide
wide
Temples narrowing - widening
narrowing, parallel
narrowing, parallel
Eye length : temple length
---
---
Roundness temple
medium, weak, very weak
medium, weak, very weak
POL : OD
---
---
Ocellar triangle shape
---
---
Excavation of head
---
---
head, lateral view
Head height : length
---
---
Eye height : length
---
---
Temple length : eye length
long, very long
long, very long
head, frontal view
Head width : height
narrow, wide
narrow, wide
Face width : height
wide
wide
Eyes converging ventrally
---
---
EH : MSL
very long
very long
Clypeus width : height
---
---
Clypeus extending above bottom of eyes
---
---
Tentorial pits
---
---
Shape of lower margin clypeus
---
---
antennae
Antennal shape
---
filiform, not widened
Segment 3 length : width
---
---
Penultimate segment length : width
---
---
Length of antenna : length of body
---
---
mesosoma, lateral view
Length : height
medium
medium
transverse carina
absent
absent
lateral teeth
very small, very weak
very small, very weak
mesosoma, ventral view
Prepectal carina lamelliform
indistinct
indistinct
legs
Hind femur length : width ratio
short, medium
short, medium
Hind tibia length : hind tarsus length ratio
long
long
Hind tibia (longest) spur length : metatars length ratio
short
short
wings
Vein 1-R1 length : pterostigma length
long
long
Vein r length : vein 3-SR length
short, long
short, long
Shape vein SR1 (straight / concave / convex)
concave
concave
S-shape vein SR1
not S-shaped
not S-shaped
cell M : cell Sm2
Sm2 small
Sm2 small
Pterostigma length : width ratio
medium, long
medium, long
Angle between radial vein (r) : vein 1-R1
medium
medium
metasoma, dorsal view
Length : width ratio of metasoma
medium, long
medium, long
Shape of metasoma
---
---
metasoma, lateral view
Length : height ratio of metasoma
short, medium
short, medium
posterior : anterior height ratio of metasoma
---
---
Position of maximum height
---
---
metasoma, ventral view
Metasoma posteriorly curved forwards
---
---
male apical aperture
Aperture width : metasoma width
no aperture
small, medium
Aperture shape
n. a.
oval
Median process shape
n. a.
---
sculpture
head
general coarseness
fine
fine
clypeus
coarseness punctation
---
---
density punctation
---
---
face
sculpture type
rugose
rugose
sculpture direction
diagonal/concentric
diagonal/concentric
vertex and temple
sculpture type
striate-rugulose
striate-rugulose
mesonotum
sculpture type
notauli indistinct
notauli indistinct
scutellum
middle
---
---
lateral
---
---
metasoma
base - mid sculpture
longitudinally rugose / rugose-striate
longitudinally rugose / rugose-striate
sculpture at apex
---
---
coarse / fine boundary
base (to 50%)
base (to 50%)
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
light
light
fore femur color pattern
entirely light
entirely light
hind femur lightest colour
dark
dark
hind femur color pattern
entirely dark
entirely dark
hind tibia lightest colour
light
light
hind tibia color pattern
wide light ring
wide light ring
hind basitarsus lightest colour
dark
dark
hind tarsus segment 2-3 lightest colour
dark
dark
wings
middle veins lightest colour
dark
dark
basal veins lightest colour
medium dark
medium dark
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 aggieae in published keys
T6: Tobias 2003
Species of the Genus Microchelonus Szépl. (Hymenoptera, Braconidae) with a Coarse Sculpture of the Head.
T4: Tobias, 1986
Key to the Insects of the European Part of the USSR Volume III. Hymenoptera. Part four. Chapter 16
T14: Tobias, 2010
Palearctic species of Microchelonus Szépligeti (Hymenoptera: Braconidae, Cheloninae): key to species.
