Lathrolestes barroni 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 : 7-10

publication ID	https://doi.org/ 10.5281/zenodo.197875
DOI	https://doi.org/10.5281/zenodo.6210086
persistent identifier	https://treatment.plazi.org/id/A654FF3B-FFF8-D97E-0D8C-FAFBC512C95D
treatment provided by	Plazi
scientific name	Lathrolestes barroni Reshchikov
status	sp. nov.

Treatment

Lathrolestes barroni Reshchikov sp. nov.

Description. Female. Body length 4.0–5.0 mm. Antennal flagellum with 27 articles. Width to length ratio of scapus 0.53. Head narrowed behind the eyes, mat. Maximal length of temple to transverse eye diameter ratio 0.63; minimal length of temple to transverse eye diameter ratio 0.43. Face as wide as longitudinal eye diameter; 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 0.27 of basal mandible width ( Fig. 54 View FIGURES 53 – 58 a). Occipital carina complete, not interrupted above. Lower mandible tooth longer than upper.

Mesosoma . Notaulus shallow, impressed at base. Mesosoma very wide, protruding laterally. Lower part of mesopleuron without punctures, mat, meshed. Tarsal claws pectinate ( Fig. 42 View FIGURE 41 – 52. 41 – 50 ). Hind tarsus article length ratio: 9:4:3:2:3. Forewing with areolet petiolate. Second recurrent vein with a single bulla. Nervellus intercepted below middle. Nervulus interstitial or slightly postfurcal. Propodeal carinae complete ( Fig. 32 View FIGURE 21 – 40. 21 – 30 ). Area superomedia as long as wide.

Metasoma. Shiny. First metasomal tergum width to length ratio 0.7; with shallow median longitudinal impression; bordered by lateral and median longitudinal carinae. Ovipositor straight, stout dorsally, without notch ( Fig. 2 View FIGURES 1 – 20 ).

Color. Face, malar space, temple, base of antenna ( Fig. 54 View FIGURES 53 – 58 a), tegulae, edges of propleuron and lower part of mesopleuron, scutellum, fore and middle legs, hind coxa and femur, hind margin of metasomal tergum, metasomal tergum 3–6 laterally, 8th metasomal tergit yellow ( Fig. 54 View FIGURES 53 – 58 b). Remainder black.

Comments. This species differs from the closely related L. syringe Reshchikov sp. nov. by ovipositor being stout dorsally ( Fig. 2 View FIGURES 1 – 20 ); mesosoma rather wider, with projecting mesopleuron; area superomedia as long as wide ( Fig. 32 View FIGURE 21 – 40. 21 – 30 ); 2nd metasomal tergum transverse, with smooth and shiny surface. Ovipositor without notch ( Fig. 2 View FIGURES 1 – 20 ) as distinct from L. scutellatus ( Ashmead, 1890) .

Etymology. Named in honor of John Barron, Canadian researcher, who described many species of the family Ichneumonidae and previously revised the genus Lathrolestes .

Host. Unknown

Distribution. Canada: Quebec, Ontario

Type material examined. Holotype, female, Hull, Quebec, Canada, 10.viii.1965, ( CNC); Paratypes: female, St. Lawrence Is. Nat. Park Ontario, Canada, 01.ix.1976, A. Carter ( CNC).