shapeMaxillary palpi short, mouthparts not produced into proboscis [T4]. Head distally somewhat contracted [H2]. The head is rounded and narrowed behind the eyes. Temples equal to the transverse diameter of the eye. POL is 4 times the diameter of an ocellus. The longitudinal diameter of the eye is twice the height of the malar space. The width of the face is twice its height [T14].The head is transverse, not strongly, roundly narrowed posteriorly. The face is twice as wide as high; malar space 0.5 times longitudinal diameter of the eye; temples equal to the width of the eye. The ocelli are small; the distance between them and the eyes is 4 times the diameter of the ocellus [Te1]. The eyes are small and not much protruding [S4].
sculptureThe head is softly rugose, the clypeus is smooth and shiny, ♂ face with straight, parallel striae [T14]. Head gently rugose, matt. Clypeus smooth, shiny [Te1]. Clypeus punctated [S4].
colorTips of mandibles red [S4].
antenna
shape ♀16 segments, apical segments distinct, ovate [N]. 16 segments, all elongated and not very tight [W]. Antenna short, strongly widened beyond middle, pre-apical segments almost square [H2]. Antennae slightly longer than head and mesosoma combined; length of preapical segments equal to or slightly greater than their width [T14]. 16 segments [Te1].
shape ♂26-28 segments, a little shorter than the body [W][M2]. 20 segments [S2]. Antennae equal to body length, 20 segments [Te1]. 22 segments, scapus flat, side compressed [S4]
color
mesosoma
shapeThe length of the mesosoma is about 1.4 times its height. Propodeum with transverse carina and pointed lateral teeth [T14]. Propodeum with a transverse carina in the middle and with 2 short teeth on the sides [Te1].
sculptureMesosoma weakly rugose [H2]. Mesonotum rugose; sides of mesosoma and propodeum more coarsely rugose [T14]. Mesonotum clearly rugose, notauli not distinct. The sides of the mesosoma more coarsely rugose. Scutellum smooth in the middle [Te1]
color
legs
shapeHind femur 3 - 3.5 times as long as wide [T14].
sculpture
colorBlack, tip of fore femora and fore tibiae fully reddish-brown. Hind legs completely black, tibiae towards the base a little reddish. Tarsi darkish [N]. Tibiae in middle somewhat reddish [S2]. Legs are black; tibiae of all legs more or less reddish [Te1]. Legs black, tips of femora, fore tibiae and tarsi, mid of mid tibiae, a ring on the hind tibae and the base of the metatarsi are red [S4].
wings
shapeMarginal cell as long as stigma [H2]. The marginal cell of the fore wing is twice as large as the 2nd submarginal cell; 1-R1 is equal to or slightly shorter than the length of the pterostigma. ♂ 1-R1 is equal to the length of the pterostigma [T14]. Vein r is equal to 3-SR. r-m shorter than 3-SR, SR1 straight, almost three times longer than 3-SR. 2-SR 1.5 times 3-SR. 1-R1 shorter than pterostigma, 1-CU1 = 0.5 times 2-CU1 [Te1]. SR1 straight [S4].
colorWings dark transparent [N]. Light wings [T14]. The wings are light; the pterostigma is brown [Te1]. Wing brownish [S4].
metasoma
shapeApex rounded [N]. Metasoma less than 2 limes as long as wide, usually 1.6 -1.8 times [T4]. Metasoma oval, slightly bent apically forward, 1.6–1.7 times as long as wide. ♂ Metasoma oval, 1.6–1.8 times as long as wide. [T14]. Metasoma elongated, as long as head and mesosoma. Basal carinae weak [S4].
sculptureNo coarse rugae on metasoma, all of metasoma uniformly finely rugulose, coriaceous. Base of metasoma with 2 carinae [S2]. Metasoma weakly rugose [H2]. Longitudinal rugae on metasoma weak (♀) or absent (♂) (fig. 1) [T4]. Metasoma with weak longitudinal rugae, mainly in its basal half [T14]. Metasoma rugose, but without sharp longitudinal rugae [Te1].
color♂: metasoma black [T4]
♀ ovipositorThe ovipositor is usually hidden under the carapace of the metasoma [T14].
♂ apertureMale aperture small, semi-circular and with shiny borders [S2]. Aperture on apex of abdominal shield rounded or slightly wide, its width not more than 1.5 times its height [T4]. The middle process of the aperture occupies about a third of its height [T14]. Aperture small, rounded [Te1]. Aperture twice as wide as high, upper border ciliated [S4].
other info
distributionWestern Europe [T4].
remarksThrough the compressed scapus distinct from similar Chelonus species [S4].
Synon. Sigalphus contractus N. ab E. Berl. Mag. VII. p. 274. n.33.
Long. lin. 1 1/2. Statura omnino praecedentis, a quo praesertim antennarum structura, sculpturaque corporis subtiliore recedit. Antennae ratione reliqui corporis validi, septemdecimarticulati, articulis extremis discretis, ovatis. Color corporis niger, opacus. Anus rotundatus. Pedes nigri, femoribus anterioribus apice, tibiisque iisdem tolis rufo-piceis; postici fere toti nigri, tibiis tamen basin versus parum rufescentibus. Tarsi subfusci. Alae obscure hyalinae.
Habitat Berolini (Museum Klugianum). Marem non vidi.
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):
(2.3) 2.3 - 4 (4.2)
(2.3) 2.3 - 4 (4.2)
number of antennal segments:
16
(20) 20 - 26 (28)
head, dorsal view
Head width : length
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---
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
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---
Excavation of head
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---
head, lateral view
Head height : length
---
---
Eye height : length
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---
Temple length : eye length
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---
head, frontal view
Head width : height
---
---
Face width : height
wide
wide
Eyes converging ventrally
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---
EH : MSL
short
short
Clypeus width : height
---
---
Clypeus extending above bottom of eyes
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---
Tentorial pits
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---
Shape of lower margin clypeus
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---
antennae
Antennal shape
---
filiform, not widened
Segment 3 length : width
---
---
Penultimate segment length : width
short
---
Length of antenna : length of body
2: short, 3: long
3: long, 4: very long
mesosoma, lateral view
Length : height
---
---
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
short, medium
short, medium
Hind tibia length : hind tarsus length ratio
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---
Hind tibia (longest) spur length : metatars length ratio
