Odontochrydium Brauns, 1928

Rosa, Paolo, 2018, Review of Odontochrydium Brauns (Hymenoptera, Chrysididae) with description of two species from the Palaearctic and Oriental regions, Zootaxa 4450 (4), pp. 445-457 : 446

Genus Odontochrydium Brauns, 1928

Odontochrydium Brauns, 1928: 389 . Type species: Odontochrydium trautmanni Brauns, 1928: 389 (= Chrysis irregularis Mocsáry, 1914 ). Kimsey & Bohart 1991: 517; Madl & Rosa 2012: 107.

Diagnosis. Clypeus and scapal basin elongate; midocellus lidded; TFC with branches encircling mid-ocellar area; lower mesopleuron tetradentate, posterior tooth digitate close to metapleuron; apical margin of metasomal tergite 3 tridentate; small black spots on sternite 2 widely separated ( Kimsey & Bohart 1991); large species with robust, broad, convex habitus ( Fig. 1 ).

Description. Head subquadrate in frontal view (l/w = 1), scapal basin elongate, transversely microridged ( Figs 2B , 4B , 5B , 6B ); F1 1.5 × as long as broad in female, 1.3 × in male; subantennal space 1.8–2.0 × MOD; malar space 1.0–1.5 × MOD; genal carina full developed, running under eye to mandibular joint; subgenal area faint; TFC nearly straight, with branches encircling mid-ocellar area; mid-ocellus lidded; pronotum with dorsal surface ending abruptly, medially narrow (almost half than pronotal length measured at sides), sides apically convergent, anterior angles acute ( Fig. 2B ); lateral lobes of mesoscutum broadened over part of tegulae; metanotum simple, without metanotal projection; mesopleuron with ventral margin tridentate, and with fourth digitate tooth positioned posteriorly on mesopleuron, close to metapleuron; posterior propodeal projection (= propodeal angle) large, incurved behind; tergites broad, metasomal tergite 2 with shallow longitudinal carina; metasomal tergite 3 apically tridentate; metasomal tergite 3 lateral edge biconvex; black spots on metasomal sternite 2 rounded to sub-oval, almost connected to lateral margin of metasomal sternite 2 and medially well separated.

Distribution. South and East Sub-Saharan Africa, Saudi Arabia and southern India.

Figures

FIGURE 1. A. Odontochrydium xui sp. nov., holotype female. B. O. bicristatum sp. nov., female; C. O. bicristatum sp. nov., holotype male; D. O. irregulare (Mocsáry), male from Zimbabwe; E. O. irregulare, female from South Africa, lateral view.

FIGURE 2. Odontochrydium irregulare (Mocsáry), holotype female. A. Habitus, dorsal view; B. head, frontal view; C. Mesosoma, lateral view; D. Mesosoma, frontal view; E. Metasoma, lateral view; F. Metasomal tergite 3, posterior view. Photo courtesy of The Natural History Museum, London ©.

FIGURE 4. Odontochrydium irregulare (Mocsáry), female. A. Metasoma, dorso-lateral view; B. Head, frontal view; C. Mesosoma, lateral view; D. Mesosoma, dorsal view; E. Metasoma, postero-lateral view; F. Metasomal tergite 3, posterior view.

FIGURE 5. Odontochrydium irregulare (Mocsáry), male. A. Metasoma, dorso-lateral view; B. Head, frontal view; C. Mesosoma, lateral view; D. Mesosoma, dorsal view; E. Metasoma, postero-lateral view; F. Metasomal tergite 3, posterior view.

FIGURE 6. Odontochrydium bicristatum sp. nov., holotype male. A. Metasoma, dorso-lateral view; B. Head, frontal view; C. Mesosoma, lateral view; D. Mesosoma, detail; E. Metasoma, lateral view; F. Metasomal tergite 3, posterior view.