Revision of Dvivarnus (Scelionidae, Teleasinae)

Abstract

Two new species, Dvivarnus elektrolythron Talamas & Mikó, sp. n. and D. mikuki Talamas & Mikó, sp. n. are described. The genus is redescribed and a key is provided to separate Dvivarnus from other groups in Teleasinae with mesoscutellar spines.

A semantically enriched taxonomic revision of Gryonoides Dodd, 1920 (Hymenoptera, Scelionidae), with a review of the hosts of Teleasinae

“…Eggs and emerging larvae were fixed with 75% ethanol and transferred into a glycerol droplet on concave microscope slides. The reared specimens of Trimorus mandibularis (Ashmead) were identified by comparison with images of the holotype (USNMENT01059227) provided by Talamas et al (2016).…”

“…Gryonoides Dodd, 1920Gryonoides Dodd, 1920 Diagnosis. Gryonoides was diagnosed from two other taxa with lateral mesoscutellar spines, Dvivarnus Rajmohana and Veenakumari and a species in the Trimorus carus group, by Talamas et al (2016). The elongate clypeus and torular triangle of Gryonoides are shared with the undescribed species in the T. carus group, whereas the presence of the proximal projections of cercal plates (pac: Fig.…”

“…Although a few other teleasines also possess lateral mesoscutellar spines (e.g. Dvivarnus), Gryonoides can be readily diagnosed from them via multiple characters (Talamas et al 2016) including the extremely elongate male flagellomeres. Gryonoides is strictly Neotropical in distribution and although rarely represented in historic collections (e.g.…”

Review of Odontoscelio Kieffer, 1905 (Platygastroidea, Scelionidae) with the description of two new species from India

“…Veenakumari et al (2011b) described a third genus, Dvivarnus Rajmohana & Veenakumari, also possessing lateral mesoscutellar spines. Talamas et al (2016) included the Trimorus carus (Nixon, 1936) species group with this character state and provided a key for the three genera -Gryonoides, Dvivarnus and the Trimorus carus species group -all sharing lateral mesoscutellar spines. The lateral spines on the mesosoma in Odontoscelio have now been clarified to be elongations of the axillula, and they are hence axillular spines and not mesoscutellar spine as in Gryonoides, Dvivarnus and Trimorus carus.…”