Microleptes Gravenhorst 1829
Creators: name: Ranjith, Avunjikkattu P.
name: Humala, Andrei E.
name: Priyadarsanan, Dharma Rajan
name: Butcher, Buntika A.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Microleptes

description: Microleptes Gravenhorst, 1829
Microleptes Gravenhorst, 1829. Type species: Microleptes splendidulus Gravenhorst. Monobasic.
Miomeris Förster, 1868. Type species: Miomeris aquisgranensis Förster. Designated by Förster (1871).
Gnathoniella Schmiedeknecht, 1924. Type species: Gnathoniella egregia Schmiedeknecht (= Miomeris rectangulus Thomson). Monobasic.
Diagnosis.
Body robust, in many species somewhat dorsoventrally depressed (Figs 1 A, 3 A, 5 A, 7 A, 9 A, 11 A). Head mostly wider than long (Figs 1 B, 3 B, 5 B, 7 B, 9 B) rarely as long as wide (Fig. 11 B). Face anteriorly usually protruding below antennal sockets (Figs 1 D, 3 A, E, 7 A). Clypeus transverse, weakly separated from face (Figs 1 B, 3 B, 5 B, 7 B, 9 B). Subocular sulcus present (Figs 1 B, 3 B, 5 B, 7 B, 9 B). Mandible mostly with undivided single broad tooth, if divided lower tooth smaller than upper tooth (Figs 1 B, 3 B, C, 5 B, 7 B, 9 B). Temple long (Figs 1 C, D, 3 A, D, E, 5 C, 7 C, 9 C, D, 11 C, D). Occipital carina complete (Figs 1 C, 3 D, 9 C, 11 C). Scape subcylindrical (Figs 1 D, 3 A, E). Antennae with 14–18 flagellomeres. Flagellomeres from longer than wide (Figs 9 A, 11 A) to distinctly transverse (Figs 1 A, 3 A, E, 7 A, C). Male flagellum with tyloids present on flagellomeres 1–2, 1–3 or 5–9 in the form of longitudinal ridges. Epomia absent (Figs 1 F, 4 A, 5 F, 7 E, 9 F, 11 D). Mesoscutum with lateral longitudinal groove (Figs 1 E, 4 B, 5 D, 7 D, 9 E, 11 E). Notauli only impressed anteriorly (Figs 1 E, 4 B, 5 D, 7 D, 9 E, 11 E). Scuto-scutellar groove smooth, undivided, lateral carina of the mesoscutum not crossing scuto-scutellar groove (Figs 1 E, 4 B, 5 D, 7 D, 9 E, 11 E). Epicnemial carina present, extending to subtegular ridge, mostly with a deep groove (Figs 1 F, 4 A, 5 E, 7 E, 9 F, 11 D). Propodeum smooth or sculptured with distinct carination associated with wrinkles or rugosity (Figs 4 C, 5 F, 6 A, 7 F, 10 A, 11 F). Anterior transverse carina (costula) present or absent (Figs 4 C, 5 F, 6 A, 7 F, 10 A, 11 F). Area basalis and area superomedia confluent (Figs 4 C, 5 F, 6 A, 7 F, 10 A, 11 F). Posterior transverse carina usually complete (Figs 4 C, 5 F, 6 A, 7 F, 10 A, 11 F). Hind femur mostly robust (Figs 1 A, 2 C, 3 A, 5 A, 6 A). Hind tibia with apical fringe of dense long setae on inner side. Claw simple, without basal lobe. Fore wing without areolet (vein 3 rs-m absent) (Figs 2 B, 4 F, 6 D, 8 D, 10 F, 12 D); vein 2 m-cu with one bulla (Figs 2 B, 4 F, 6 D, 8 D, 10 F, 12 D); vein M & RS strongly curved (Figs 2 B, 4 F, 6 D, 8 D, 10 F, 12 D); vein 1 cu-a interstitial to postfurcal (Figs 2 B, 4 F, 6 D, 8 D, 10 F, 12 D). First metasomal tergite without glymma, spiracle situated near mid-length of tergite (Figs 2 C, 4 D, 6 A, 8 A, 10 C). First metasomal sternite extending to mid-length of segment, fused with tergite (Figs 2 C, 4 D, 6 A, 8 A, 10 C). Second metasomal tergite with thyridium (Figs 2 D, 4 E, 6 B, 8 B, 10 D, 12 B). Ovipositor shorter than apical height of metasoma, ovipositor sheath setose (Figs 2 C, 4 D, 6 A, 8 A, 12 A).
Distribution.
Holarctic and Oriental regions.
Biology.
Two species have been reared from Stratiomyidae (Diptera) (Wahl 1986; Schwarz 1991).
description: Published as part of Ranjith, Avunjikkattu P., Humala, Andrei E., Priyadarsanan, Dharma Rajan & Butcher, Buntika A., 2024, Discovery of the subfamily Microleptinae (Hymenoptera, Ichneumonidae) from India and Thailand with the description of five new species, pp. 1257-1284 in Journal of Hymenoptera Research 97 on pages 1257-1284, DOI: 10.3897/jhr.97.131822