Ooctonus Haliday 1833

OOCTONUS Haliday, 1833 (Figs 231–235) Ooctonus Haliday, 1833a: 268, 1833b: 343. Type species: Ooctonus insignis Haliday, 1833, by subsequent designation by Westwood, 1839: 78. See Huber et al. (2020) for the generic synonym and its type species. Diagnosis. Face without subantennal sulcus ventral to each torulus (Fig. 231a); funicle 8-segmented (Fig. 232); pronotum entire (Fig. 234); fore wing with hypochaeta next to proximal macrochaeta (Fig. 233); propodeum with diamond-like pattern of carinae, the incomplete median carina, costulae and plicae, defining a central pentagonal areole and, sublaterally, several (usually 4) submedian areoles (Fig. 234); petiole distinctly longer than wide (Fig. 235a,b). Remarks. Ooctonus belongs to the Ooctonus group of genera. In the Neotropical region it is the only genus in the group. Although Ooctonus was traditionally placed near the Gonatocerus group of genera it superficially resembles several genera in the Polynema group except for the obvious difference in number of funicle and tarsal segments (Huber 2013b). The position of the hypochaeta — close to the proximal macrochaeta — is more similar to members of the Polynema group than to members of the Gonatocerus group. The combination of 8-segmented funicle in females and presence of plicae and costulae on the propodeum are unique. Neotropical hosts. Unknown. Important reference. Huber (2013b).