Chrysoctonus, Mathot, 1966

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2024, Illustrated key to the genera and catalogue of Mymaridae (Hymenoptera) in the Neotropical region, Zootaxa 5557 (1), pp. 1-263 : 42-43

CHRYSOCTONUS Mathot, 1966

( Figs 68–74 )

Chrysoctonus Mathot, 1966: 224 . Type species: Chrysoctonus apterus Mathot, 1966 , by monotypy. See Huber et al. (2020) for generic synonyms and their type species.

Diagnosis. Female wingless (Figs, 71, 73, 74); ocelli absent ( Figs 68 , 73, 74 ); funicle variable ( Figs 69, 70 ), with 4– 7 segments; mesosoma short, higher than wide, with pronotum, mesoscutum and scutellum all about equal in length ( Figs 71 , 73, 74 ); petiole shorter than wide, barely visible ( Figs 72a,b ). Male fully winged, with venation extending almost 0.6× fore wing length; flagellum 11-segmented, with each funicle segment several times as long as wide.

Remarks. Huber et al. (2021) placed Chrysoctonus in the Borneomymar group of genera but this is probably wrong. It is tentatively placed here in the Arescon group of genera because the males have a long venation, resembling that of Arescon . The flagellar segments are narrower and longer than in Arescon males. Chrysoctonus is the only genus of the group with wingless females. Males differ from those in the other genera in the group in having the mandible with 3 teeth instead of 4 teeth. Chrysoctonus could perhaps also be placed in the Ooctonus group of genera because of the large gt 1 and mandible with 3 teeth.

Neotropical hosts. Unknown.

Distribution. No named species in the Neotropical region. Luft Albarracin et al. (2014) recorded the genus from Argentina. Specimens examined are from at least 15 countries in Central and South America and the Caribbean islands (CNC, UCRC).

Important references. Huber & Triapitsyn (2015), Huber et al. (2020).

Figures

FIGURE 72. Chrysoctonus. 72a, metasoma, dorsal; 72b, metasoma, ventral.

FIGURES 68–71. Chrysoctonus. 68a; head, anterior; 68b, head posterior; 69–70, antennae; 71, mesosoma, dorsal.

FIGURES 73, 74. Chrysoctonus. 73, habitus, lateral; 74, head + mesosoma, lateral.