Lathrolestes fissus Reshchikov

Reshchikov, Alexey V., Soper, Anna & Van, Roy G., 2010, Review and key to Nearctic Lathrolestes Förster (Hymenoptera: Ichneumonidae), with special reference to species attacking leaf mining tenthredinid sawflies in Betula Linnaeus (Betulaceae), Zootaxa 2614, pp. 1-17 : 10

publication ID	https://doi.org/ 10.5281/zenodo.197875
DOI	https://doi.org/10.5281/zenodo.6210088
persistent identifier	https://treatment.plazi.org/id/A654FF3B-FFF7-D97E-0D8C-FD93C32CCC45
treatment provided by	Plazi
scientific name	Lathrolestes fissus Reshchikov
status	sp. nov.

Treatment

Lathrolestes fissus Reshchikov sp. nov.

Description. Female. Body length 5.0 mm. Antennal flagellum with 26–31 articles. Width to length ratio of scapus 0.33. Head narrowed behind the eyes, mat. Maximal length of temple to transverse eye diameter ratio 0.8; minimal length of temple to transverse eye diameter ratio 0.48. Face almost as wide as longitudinal eye diameter, their ratio 1.07; in profile convex, with bulge. Clypeus separated from face by transverse impression; at apex projecting slightly anteriorly; apical margin of clypeus moderately thick. Clypeal foveae small. Malar space as wide as 0.33 of basal mandible width ( Fig. 55 View FIGURES 53 – 58 a). Occipital carina complete, not interrupted above. Lower mandible tooth longer than upper.

Mesosoma . Notaulus absent. Mesopleuron without punctures, mat, shagreen. Tarsal claws short, strongly curved at apex, with basal lobe ( Fig. 43 View FIGURE 41 – 52. 41 – 50 ). Hind tarsus article length ratio: 5.0:2.0:1.6:1.0:1.7. Forewing with areolet petiolate. Second recurrent vein with a single bulla. Nervellus intercepted below middle. Nervulus interstitial. Propodeal carinae partly complete ( Fig. 33 View FIGURE 21 – 40. 21 – 30 ). Costula absent.

Metasoma. Partly shiny, pubescent with white hairs. First metasomal tergum width to length ratio 0.8; without shallow median longitudinal impression; bordered by lateral longitudinal carinae; median longitudinal carinae absent; with shiny area at base separate from punctate part, with median longitudinal groove ( Fig. 37 View FIGURE 21 – 40. 21 – 30 ). 2nd metasomal tergum transverse. Ovipositor straight, thin, very gradually tapered from base to apex, without notch ( Fig. 3 View FIGURES 1 – 20 ). Apical margin of male subgenital plate notched ( Fig. 40 View FIGURE 21 – 40. 21 – 30 ). Male genitalia with parameres not surpassing apex of metasoma.

Color. Female. Body yellow-reddish; fore coxae and trochanters yellow; antennae and ovipositor sheath dark. Male. Face yellow. Otherwise as in female ( Fig. 55 View FIGURES 53 – 58 a, b).

Comments. The species differs from the closely related L. thomsoni Reshchikov sp. nov. by its mostly yellowish body ( Fig. 55 View FIGURES 53 – 58 b); costula absent ( Fig. 33 View FIGURE 21 – 40. 21 – 30 ); face with bulge; lower part of mesopleuron shagreen; first metasomal tergum without projections at spiracles. Hind tibia uniformly colored as distinct from European L. albicinctus (Habermehl, 1922) . Tarsal claws short, strongly curved at apex, with preapical teeth ( Fig. 43 View FIGURE 41 – 52. 41 – 50 )

Variation. Body of some specimens darker than type specimens.

Etymology. The species epithet, fissus , refers to structure of first metasomal tergum.

Host. Unknown

Distribution. USA: NC, GA, FL

Type material examined. Holotype, female, GA, Forsyth, 12–16.vi.1970, F.T. Naumann, ( AEI); Paratypes ( AEI): 1 female, FL, Gainesville, SW 34th St., Malaise Trap, 2.x.1985, Brambila; 1 male, Tall Timbers, 2–12.vi.1971, R.H. Arnett; 1 female, NC, Highlands, vi.1977, H&M Townes; 1 female, GA, Forsyth, 28.v.–9.vi.1970, F.T. Naumann