Platyfrons, Yoshimoto, 1990

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 : 89

PLATYFRONS Yoshimoto, 1990

( Figs 252–256 )

Platyfrons Yoshimoto, 1990: 79 . Type species: Platyfrons helavai Yoshimoto, 1990 , by original designation.

Diagnosis. Face without subantennal sulcus ventral to each torulus and with a pit medially next to each torulus ( Fig. 252a ); toruli separated by about 2× their own height from transverse trabecula ( Fig. 252a ); propleura narrowly abutting each other anterior to prosternum; scutellum anteriorly with a deep sulcus at level of each notaulus extending from transscutal articulation posteriorly for a short distance ( Fig. 255 ); fore wing usually with a wide dark band beyond venation ( Fig. 254 ); propodeum with widely spaced and diverging submedian carina dorsoanteriorly, separated posteriorly by a transverse carina from the more closely spaced and parallel ventroposterior submedian carinae ( Fig. 255 ); the two sets of carinae form a distinct angle at their junction (best seen in lateral view), petiole apparently attached posteriorly to gt 1 ( Fig. 256 ).

Remarks. Platyfrons belongs to the Polynema group of genera. The only similar genus in configuration of the propodeal carina is Polynemula , which differs in the ovipositor projecting distinctly anteriorly ventral to the mesosoma. The short, deep sulcus on the scutellum posterior to each notaulus does not occur in Polynemula , which suggests that Platyfrons is generically distinct from Polynemula .

Neotropical hosts. Unknown.

Important reference. Yoshimoto (1990).

Figures

FIGURES 252–254. Platyfrons. 252a. head, anterior; 252b, head, posterior; 253, antenna; 254, wings.

FIGURES 255, 256. Platyfrons.255, mesosoma, dorsal; 256, metasoma, lateral.