Coriotela Burks & Heraty, 2020

Burks, Roger A. & Heraty, John M., 2020, First described fossil representatives of the parasitoid wasp taxa Asaphesinae n. n. and Eunotinae (Hymenoptera: Chalcidoidea: Pteromalidae sensu lato) from Eocene Baltic amber, Journal of Natural History 54 (9), pp. 801-812 : 803-805

Coriotela Burks & Heraty n. gen.

( Figure 1 (a – c)

Type species: Coriotela lasallei Burks & Heraty n. sp.

http://www.zoobank.org/ urn:lsid:zoobank.org:act:FA0DE480-3731-47ED-A1E4-D01566924A90

Diagnosis

Occipital carina ( Figure 1 (a): occ) present as a weak, uniform arch. Antenna with 1 anellus; toruli located above lower eye margin. Fore wing without speculum (uniformly setose). Prepectus bare. Frenal groove ( Figure 1 (a): frl) complete to frenal arms, indicated medially by row of distinct sculpture. First gastral tergum without long setae basally.

Description. Head with coriaceous sculpture. Antenna with 12 flagellomeres, including a small anellus, 7 funiculars, and 4 clavomeres (including terminal button) ( Figure 1 (b)). Toruli above lower eye margin, slightly below centre of face. Maxilla with 4 palpomeres, labium with 3 palpomeres. Occipital carina weakly indicated as a uniform arch, and without the median peak found in some Asaphesinae. Gena posteriorly carinate near mandibular base.

Mesosoma predominantly with coriaceous sculpture. Mesoscutum with complete notauli. Axillula slightly recessed relative to surrounding areas; frenum indicated by complete frenal groove. Prepectus bare. Fore wing without speculum, uniformly setose; parastigma with constriction and hyaline area immediately beyond one pair of placoid sensilla ( Figure 1 (c)), marginal vein slightly longer than stigmal vein (when measured as indicated by Gibson 1997), slightly over half as long as postmarginal vein. Fore leg with curved, stout, apically cleft fore tibial spur; basitarsal comb oblique, crossing basitarsal notch. Mid tibial spur not enlarged.

Metasoma. Petiole short but with strong carinae dorsally. Gaster dorsally convex; Gt 1 without setae basally; Gs 1 antecostal sulcus crossed by longitudinal carinae, anterior margin of sulcus strongly carinate. Hypopygium reaching to level of Gt 6 midlength. Mt 8+9 united as syntergum.

Etymology. From the Latin words corium = leather, and tela = cloth. Intended to describe the coriaceous sculpture. Gender feminine.

Figures

Figure 1. (a–c) Coriotela lasallei n. gen., n. sp. holotype female: (a) Body, dorso-lateral; (b) Head, mesosoma, and anterior part of metasomal, lateral, frl = frenal groove, occ = occipital carina. (c) Fore wing, clv = clava, clavomeres numbered. (d,e) Butiokeras costae n. gen., n. sp. holotype male: (d) Body, dorso-lateral; (e) Body, ventro-lateral.