shapeHead 1.1 times as wide as mesoscutum, roundly narrowing behind eyes [T7][T14]. Length of temples 0.3 times [T7] to 0.5 times [T14] transverse eye diameter. POL 4 times ocellus diameter. OOL shorter than base of ocellar triangle by ocellus diameter. Eyes large, shortly oval, longitudinal eye diameter 1.3 times transverse one, 0.6 [T14] - 0.8 [T7] times face width. Face height 0.6 times its width, 1.3 times clypeus height. Malar height 0.4 times longitudinal eye diameter [T7][T14]. The width of the ocellar triangle by the diameter of the ocellus [?] is greater than OOL [T14].
sculptureHead densely rugose-punctate, temples with vertical rugae, vertex with obsolete transverse rugae; face with vertical rugae laterally and several transverse rugae in the middle [T7].
color
antenna
shape ♀Antennae slightly shorter than head and mesosoma combined; 3rd segment 2.5 times as long as wide, apical segments as long as wide [T7][T14]. Several apical segments as long as wide [T14].
shape ♂
color♀ Antennae brown in basal half. ♂ Antennal scape dark [T7].
mesosoma
shapeLength of mesosoma 1.4 times its height. Propodeum with weak transverse carina and small lateral teeth [T7][T14].
sculptureMesosoma rather coarsely rugose-punctate; mesoscutum covered with depressed punctures; before scutellum, alveolate, with predominance of longitudinal rugae [T7].
color
legs
shapeLength of hind femur 3 times its width. Hind tibia thickened/flattened, its length 4.3 times its width. Inner spur of hind tibia 0.3 times as long as 1st segment of hind tarsus, 5th segment of hind tarsus as long as 2nd segment, longer than 3rd [T7].
sculpture
colorLegs reddish brown, apices of fore femur and tibia yellowish, middle of hind tibia with obsolete yellowish band [T7][T14]. Hind tibia sometimes entirely brown [T14].
wings
shape♀:vein r straight. marginal cell 3 times as large as 2nd submarginal cell; 1-R1 0.7 times as Iong as pterostigma;SR1 5 times as long as 3-SR, 3 times as long as r [T7]. ♂ 1-R1 0.6 times as long as pterostigma [T7]. ♂ 1-R1 0.6 times length of pterostigma.
colorWings pale, veins yellowish in basal half of wing and brownish, in apical one [T7].
metasoma
shapeMetasoma oval, its length 1.7 times its width, 2.5 times its height; carapace apically reflexed along 0.1 of its length. Male metasoma pointed apically, 1.8 times as long as wide [T7].
sculptureMetasoma with rather coarse, strongly undulate, anastomozing longitudinal rugae nearly reaching its apex [T7].
colorBand in basal third of metasoma yellow (♀) or whitish yellow (♂) [T7]. ♀ with whitish-yellow basal band, ♂ with whitish basal band [T14].
♀ ovipositor
♂ apertureAperture large, nearly round, occupying about a third of metasoma width, its median process cariniform, far protruding. Width slightly exceeding its height [T7].
other info
distributionCzech Republic [T7].
remarks
hosts
figures
fig. 1: part of fore wing (Tobias 2001a)
fig. 2: ♀ metasoma, dorsal view (Tobias 2001a)
fig. 3: ♀ metasoma, lateral view (Tobias 2001a)
fig. 4: ♂ metasoma, dorsal view (Tobias 2001a)
fig. 5: ♂ apex of metasoma, lateral view (Tobias 2001a)
♀Gena height 0.4 times longitudinal eye diameter. First abscissa of radial vein straight. Propodeum with low transverse carina and small lateral teeth. Antennae brown in basal half.—Head 1.1 times as wide as mesoscutum, roundly narrowing behind eyes. Length of temples 0.3 times transverse eye diameter. POL 4 times ocellus diameter. OOL shorter than base of ocellar triangle by ocellus diameter. Eyes large, shortly oval, longitudinal eye diameter 1.3 times transverse one, 0.8 times face width. Face height 0.6 times its width, 1.3 times clypeus height. Antennae slightly shorter than head and mesosoma combined; 1st flagellar segment 2.5 times as long as wide, apical segments as long as wide. Length of mesosoma 1.4 times its height. Radial cell 3 times as large as 2nd radiomedial cell; its anterior margin 0.7 times as long as pterostigma; 3rd abscissa of radial vein 5 times as long as 2nd, 3 times as long as 1st radiomedial vein. Length of hind femur 3 times its width. Hind tibia thickened, its length 4.3 times its width. Inner spur of hind tibia 0.3 times as long as 1 st segment of hind tarsus, 5th segment of hind tarsus as long as 2nd segment, longer than 3rd. metasoma oval, its length 1.7 times its width, 2.5 times its height; carapace apically reflexed along 0.1 of its length. Head densely rugose-punctate, temples with ver-tical rugae, vertex with obsolete transverse rugae; face with vertical rugae laterally and several transverse rugae in the middle. mesosoma rather coarsely rugose-punctate; mesoscutum covered with depressed punctures; before scutellum, alveolate, with predominance of longitudinal rugae. metasoma with rather coarse, strongly undulate, anastomozing longitudinal rugae nearly reaching its apex. Legs reddish brown, apices of fore femur and tibia yellowish, middle of hind tibia with obsolete yellowish band. Band in basal third of metasoma yellow. Wings pale, veins yellowish in basal half of wing and brownish, in apical one. (Male metasoma pointed apically. AAO large, nearly round, occupying about third of metasoma width, its median process cariniform, far protruding). 2.8 mm. (Fig. 6, 4-6).
♂Anterior margin of radial cell 0.6 times as long as pterostigma. Width of AAO slightly exceeding its height. metasoma 1.8 times as long as wide, with whitish yellow basal band. Antennal scape dark. 3 mm. (Fig. 13, 6-8).
Czech Republic.
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):
(2.4) 2.4 - 3.2 (3.4)
(2.4) 2.4 - 3.2 (3.4)
number of antennal segments:
16
---
head, dorsal view
Head width : length
narrow, wide
narrow, wide
Temples narrowing - widening
narrowing, parallel
narrowing, parallel
Eye length : temple length
---
---
Roundness temple
strong, medium, weak
strong, medium, weak
POL : OD
3 - 4, > 4
3 - 4, > 4
Ocellar triangle shape
---
---
Excavation of head
---
---
head, lateral view
Head height : length
---
---
Eye height : length
very short
very short
Temple length : eye length
---
---
head, frontal view
Head width : height
---
---
Face width : height
narrow
narrow
Eyes converging ventrally
---
---
EH : MSL
long
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
short, medium
---
Penultimate segment length : width
short
---
Length of antenna : length of body
1: very short, 2: short
---
mesosoma, lateral view
Length : height
short, medium
short, medium
transverse carina
weak, indistinct
weak, indistinct
lateral teeth
weak, small, short
weak, small, short
mesosoma, ventral view
Prepectal carina lamelliform
indistinct
indistinct
legs
Hind femur length : width ratio
short
short
Hind tibia length : hind tarsus length ratio
---
---
Hind tibia (longest) spur length : metatars length ratio
short
short
wings
Vein 1-R1 length : pterostigma length
short, medium
short, medium
Vein r length : vein 3-SR length
short
short
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
short
short
Angle between radial vein (r) : vein 1-R1
medium, blunt
medium, blunt
metasoma, dorsal view
Length : width ratio of metasoma
short, medium
short, medium
Shape of metasoma
narrowing to apex, widest in middle
narrowing to apex, widest in middle
metasoma, lateral view
Length : height ratio of metasoma
short, medium
medium, long
posterior : anterior height ratio of metasoma
medium, large
medium, large
Position of maximum height
medium-posterior
posterior
metasoma, ventral view
Metasoma posteriorly curved forwards
just/slightly incurved
just/slightly incurved
male apical aperture
Aperture width : metasoma width
no aperture
small, medium
Aperture shape
n. a.
(nearly) round
Median process shape
n. a.
vertical carina
sculpture
head
general coarseness
---
---
clypeus
coarseness punctation
---
---
density punctation
---
---
face
sculpture type
rugose
rugose
sculpture direction
transverse-longitudinal
transverse-longitudinal
vertex and temple
sculpture type
transverse rugulose
transverse rugulose
mesonotum
sculpture type
notauli slightly distinct, notauli indistinct
notauli slightly distinct, notauli indistinct
scutellum
middle
---
---
lateral
---
---
metasoma
base - mid sculpture
longitudinally rugose / rugose-striate
longitudinally rugose / rugose-striate
sculpture at apex
---
---
coarse / fine boundary
mid (50 - 70%), apex (>70%)
mid (50 - 70%), apex (>70%)
color
head
mandibles color pattern
---
---
palpi, lightest color
---
---
antennae
scapus, lightest color
black, dark brown, brown, red
black, dark brown, brown, red
segment 3 and 4, lightest color
brown, red
brown, red
legs
fore coxae lightest colour
dark, medium dark
dark, medium dark
fore femur lightest colour
medium light
medium light
fore femur color pattern
tip light
tip light
hind femur lightest colour
medium dark
medium dark
hind femur color pattern
entirely dark, entirely light
entirely dark, entirely light
hind tibia lightest colour
medium dark, medium light
medium dark, medium light
hind tibia color pattern
narrow light ring
narrow light ring
hind basitarsus lightest colour
medium dark
medium dark
hind tarsus segment 2-3 lightest colour
medium dark
medium dark
wings
middle veins lightest colour
medium dark
medium dark
basal veins lightest colour
medium light
medium light
metasoma
metasoma colour pattern
color only on basal third
color only on basal third
metasoma lightest colour
light
light
metasoma base, colour pattern
light band
1, 2 or 4 spots, light band
metasoma base, light spots
n.a.
n.a., 2 large spots
metasoma base, light band
regular posterior edge
regular posterior edge
Chelonus albomacula in published keys
T14: Tobias, 2010
Palearctic species of Microchelonus Szépligeti (Hymenoptera: Braconidae, Cheloninae): key to species.
T7: Tobias, 2001a
Species of the Genus Microchelonus Szepl. (Hymenoptera, Braconidae) with Yellow Abdominal Spots and Pale Coloration of the Body from the Western Palaearctic Region
