Chelonus catulus
authorMarshall 1885
synonyms
body
shapelength 1.5 lin (≈ 3.3 mm). 3.5mm [S1]. 3.0 - 3.5mm [H2].
colorBody black, dull, minutely and thickly punctulate, almost granulated [M].
head
shapeHead transverso-cubical, not contracted behind the eyes, cheeks dilated, frontal fovea large, geminated [M]. Head almost cubical [S1]. The head is large, almost cubic, not narrowed posteriorly [Te1].
sculptureFace beset with whitish pubescence, Temple striolated [M]. The face is covered with white hair [Te1].
colorPalpi blackish, tips of mandibles reddish [M].
antenna
shape ♀
shape ♂32 segments, 1/4 longer than the body, setaceous [M]. Antennae much longer than body, bristle-shaped, 32-segmented [Te1].
color
mesosoma
shapePropodeum short, transverse, with two pointed teeth [M].
sculptureMesonotum somewhat shining, thickly punctulate, subreticulated with confluent punctures before the scutellum, which is also thickly punctulate, and not margined. Propodeum coarsely reticulated [M].
color
legs
shape
sculpture
colorFore legs orange-brown, 2/3 of their femora black. Mid and hind legs black, mid tibiae at both ends, hind tibiae at the base only orange-brown. Tarsi darkish, darker at the tips [M]. The legs are black; the fore tibia is entirely reddish, the hind tibia at the base [Te1].
wings
shapeMarginal cell shorter and broader than the pterostigma; SR1 straight; radius of hind wings nearly so. Wings 2 3/4 lin. [M].
colorWings slightyly dark, stigma, parastigma, costa, and veins blackish, only M+CU1 somewhat reddish; tegulae black [M].
metasoma
shapeMetasoma longer than the mesosoma, ovato-cylindrical, depressed at the base and with rounded apex. No basal carinae [M].
sculptureMetasoma striated with oblong reticulations becoming finer posteriorly [M].
colorMetasoma immaculate, sparingly covered with grey pubescence [M].
♀ ovipositor
♂ apertureNo [M].
other info
distribution
remarksAscogaster varipes Wesmael, 1835 (= Chelonus catulus Marshall, 1885, syn. n.)[P5].
hosts
type description
10. Chelonus catulus, n. s.
Niger, abdomine iminaculato; palpis nigricantibus, mandibularum apicc rufo. Pedes antici rufo-testacei, femorum basi latius nigra; posteriores nigri, tibiarum intermediarum basi et apice, posticarum basi tantum, troclianteribus inferis omnibus, rufotestaceis ; tarsi fusci, apice potius nigro. Alae subfuscae stigmate, costa, parastigmate, nervis nigricantibus, prfebrachiali modo subrufescente, squamulis nigris; areola radialis stigmate brevior, latior; abscissa 3tia recta; alarum inferiorum radius subrectus. Corpus opacum, subtiliter confcrtim punctulatum fere coriaceum. Genre dilatae, unde caput subcubicum, pone oculos non contractum ; facies albido-pubescens; fovea frontalis ampla, geminata; orbitae cum genis striolatae. Maris antennae 32-articulatae, corpore longiores. Mesothorax punctulatus, prope scutellum subreticulatus ; hoc immarginatum. Metathorax brevis, crasse reticulatus, acute bidenticulatus. Abdomen thorace longius, cano-pubescens, more solito subtilius scabratuni, carinis basalibus nullis, ano imperforate.
Black ; abdomen immaculate ; palpi blackish ; tips of mandibles rufous; fore legs info-testaceous, 2/3 of their femora black; 4 posterior legs black, intermediate tibiae at both ends, hind tibiae at the base only, and all the lower trochanters, rufo-testaceous; tarsi fuscous, darker at the tips. Wings subfuscous, stigma, parastigma, costa, and nervures blackish, only the praebrachial nervure subrufescent; squamulae black; radial areolet shorter and broader than the stigma ; 3d abscissa straight; radius of hind wings nearly so. Body dull, minutely and thickly punctulate, almost granulated ; head trans verso-cubical, not contracted behind the eyes, cheeks dilated ; face beset with whitish pubescence; frontal fovea ample, geminated; cheeks and orbits striolated. Antennae ♂ 32-jointed, 1/4 longer than the body, setaceous. Prothorax not produced. Mesothorax somewhat shining, thickly punctulate, subreticulated with confluent punctures before the scutellum, which is also thickly punctulate, and not margined. Metathorax short, transverse, coarsely reticulated, acutely bidenticulate. Abdomen longer than the thorax, sparingly covered with grey pubescence, ovato-cylindrical, depressed at the base and striated with oblong reticulations becoming finer posteriorly to the rounded apex ; basal carinae none; anus not perforated. ♂. Length, 1 1/2; wings 2 3/4 lin.
Most like C. secutor, sp. 13, but differing in the imperforate anus, short prothorax, darker wings, and longer antennae.
Taken at Nunton, near Salisbury, in an osier-ground.
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): | --- | --- |
| number of antennal segments: | --- | --- |
| head, dorsal view |
| Head width : length | --- | --- |
| Temples narrowing - widening | --- | --- |
| Eye length : temple length | --- | --- |
| Roundness temple | --- | --- |
| POL : OD | --- | --- |
| Ocellar triangle shape | --- | --- |
| Excavation of head | --- | --- |
| head, lateral view |
| Head height : length | --- | --- |
| Eye height : length | --- | --- |
| Temple length : eye length | --- | --- |
| head, frontal view |
| Head width : height | --- | --- |
| Face width : height | --- | --- |
| Eyes converging ventrally | --- | --- |
| EH : MSL | --- | --- |
| Clypeus width : height | --- | --- |
| Clypeus extending above bottom of eyes | --- | --- |
| Tentorial pits | --- | --- |
| Shape of lower margin clypeus | --- | --- |
| antennae |
| Antennal shape | --- | --- |
| Segment 3 length : width | --- | --- |
| Penultimate segment length : width | --- | --- |
| Length of antenna : length of body | --- | --- |
| mesosoma, lateral view |
| Length : height | --- | --- |
| transverse carina | --- | --- |
| lateral teeth | --- | --- |
| mesosoma, ventral view |
| Prepectal carina lamelliform | --- | --- |
| 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 | --- | --- |
| Vein r length : vein 3-SR length | --- | --- |
| Shape vein SR1 (straight / concave / convex) | --- | --- |
| S-shape vein SR1 | --- | --- |
| cell M : cell Sm2 | --- | --- |
| Pterostigma length : width ratio | --- | --- |
| Angle between radial vein (r) : vein 1-R1 | --- | --- |
| metasoma, dorsal view |
| Length : width ratio of metasoma | --- | --- |
| Shape of metasoma | --- | --- |
| metasoma, lateral view |
| Length : height ratio of metasoma | --- | --- |
| posterior : anterior height ratio of metasoma | --- | --- |
| Position of maximum height | --- | --- |
| metasoma, ventral view |
| Metasoma posteriorly curved forwards | --- | --- |
| male apical aperture |
| Aperture width : metasoma width | --- | --- |
| Aperture shape | --- | --- |
| Median process shape | --- | --- |
| 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 | --- | --- |
| sculpture at apex | --- | --- |
| coarse / fine boundary | --- | --- |
| color |
| head |
| mandibles color pattern | --- | --- |
| palpi, lightest color | --- | --- |
| antennae |
| scapus, lightest color | --- | --- |
| segment 3 and 4, lightest color | --- | --- |
| legs |
| fore coxae lightest colour | --- | --- |
| fore femur lightest colour | --- | --- |
| fore femur color pattern | --- | --- |
| hind femur lightest colour | --- | --- |
| hind femur color pattern | --- | --- |
| hind tibia lightest colour | --- | --- |
| hind tibia color pattern | --- | --- |
| hind basitarsus lightest colour | --- | --- |
| hind tarsus segment 2-3 lightest colour | --- | --- |
| wings |
| middle veins lightest colour | --- | --- |
| basal veins lightest colour | --- | --- |
| metasoma |
| metasoma colour pattern | --- | --- |
| metasoma lightest colour | --- | --- |
| metasoma base, colour pattern | --- | --- |
| metasoma base, light spots | --- | --- |
| metasoma base, light band | --- | --- |
Chelonus catulus in published keys