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Cryptus albitarsis (Cresson, 1864)
Ischnus albitarsis

Life   Insecta   Hymenoptera   Ichneumonoidea   Ichneumonidae   Cryptinae   Cryptus

Cryptus albitarsis
Jaime Fuest, University of Georgia · 0
Cryptus albitarsis

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Cryptus albitarsis, male
Jaime Fuest, University of Georgia · 0
Cryptus albitarsis, male
Cryptus albitarsis, female, lateral
Jaime Fuest, University of Georgia · 0
Cryptus albitarsis, female, lateral
Identification
The original species description is presented here in text form and taken driectly from: Cresson, E.T. 1864. Descriptions of North American Hymenoptera in the collection of the Entomological Society of Philadelphia. Proceedings of the Entomological Society of Philadelphia 3:194.

Isch. albitarsis, n. sp.
Very slender, black; most of the face, scutellum and tarsi, whitish; abdomen rufous; wings hyaline.
Male.-Very slender, black, shinging; face: the inner orbits, broad beneath the antennae, a bilobed spot just beneath the antennae, most of the clypeus, a spot on each mandible, and the palpi, whitish; antennae slender, about as long as the body, black, the basal joint beneath with a white spot. Thorax finely punctured; the tegulae, a sutural line before and a short line beneath the fore-wing, the collar above and a spot on each side of the pleura just above the anterior coxa, whitish; scutellum slightly convex, polished, black, with a rather large whitish spot, and a short transverse whitish line behind it; metathorax black, finely and densely punctured, truncate behind, the elevated lines not well defined, the central area rather large, subquadrate, obsoletely defined. Wings hyaline, faintly tinged with fuliginous, slightly iridescent; nervures fuscous, pale at base, stigma black; areolet 5-angular or subtriangular. Legs black, the four anterior coxae and trochanters beneath, their femora, tibiae and tarsi before and the posterior tarsi, except base and extreme apex, whitish. Abdomen elongate, slender, cylindric, polished, rufous, the apex slightly blackish; basal segment linear, with a slight tubercle on each side behind the middle. Length 4.5-5 lines; expanse of wings 6-7 lines.
Hab.-Illinois. Dr. Samuel Lewis.


Names
Trachysphyrus albitarsis

Geographic distribution
Canada (Ontario, Quebec, Nova Scotia, New Brunswick), USA (Connecticut, Indiana, Iowa, Maryland, Massachusetts, Michigan, minnesota, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Vermont, Virginia, Wisconsin)

Natural history
Cryptus albitarsis albitarsis is also a parasitoid of oriental fruit moth (Grapholita molesta), hop-merchant (Polygonia comma), and banded woollybear (Isia isabella) (Fattig, 1950).

References
Cresson, E.T. 1864. Descriptions of North American Hymenoptera in the collection of the Entomological Society of Philadelphia. Proceedings of the Entomological Society of Philadelphia 3:194.

Fattig, P.W. 1950. The Ichneumonidae or Parasitic Hymenoptera of Georgia. Emory University Museum Bulletin no. 9. 78p.

Pratt, H.D. 1945. Taxonomic studies of the Nearctic Cryptini (Ichneumonidae, Hymenoptera). American Midland Naturalist 34: 549-661.


Acknowledgements
The male photographed in lateral view was captured in Yellow Dog Plains (Marquette Co.), Michigan, 28.VI.1961 by H. and M. Townes. I thank Dr. Lars Vilhelmsen and the Zoological Museum, University of Copenhagen for receipt of this specimen loan.

The female specimen photographed in frontal view was captured in a malaise trap in Chapel Hill (Orange Co.), NC on 20-VIII-1975. I thank Dr. B. Blinn and the North Carolina State University Insect Collection for loan of this specimen.


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Updated: 2024-03-28 19:29:31 gmt
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