Lymaenon, Walker, 1846

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 : 80-81

LYMAENON Walker, 1846

( Figs 181–185 )

Lymaenon Walker, 1846: 49 . Type species: Lymaenon acuminatus Walker, 1846 , by subsequent designation by Gahan & Fagan, 1923: 82. See Huber et al. (2020) for generic synonyms and their type species.

Diagnosis. Lymaenon is distinguished from the other genera of Gonatocerini by the following combination: ocellar triangle with 3 or, rarely, 4 setae between lateral ocelli ( Fig. 181b ); pronotal lobes separated by a usually membranous gap ( Fig. 184 ); mesothoracic spiracle much larger than propodeal spiracle ( Fig. 184 ); dorsellum strap-like, with anterior and posterior margins parallel ( Fig. 184 ); stigmal vein with apex truncate ( Fig. 183 ); propodeum with parallel or slightly converging submedian lines ( Fig. 184 ), often with spicules between them.

Remarks. Lymaenon belongs to the Gonatocerus group of genera, treated formally as Gonatocerini ( Huber 2015a) . The metanotum with straight and parallel anterior and posterior margins is characteristic though a few species of Cosmocomoidea have the metanotum narrow, with almost parallel anterior and posterior margins.

Neotropical hosts. Unknown.

Important references. Huber (2015a), Triapitsyn et al. (2015).

Figures

FIGURES 181–183. Lymaenon. 181a, head, anterior; 181b, head, posterior; 182, antenna; 183, wings.

FIGURES 184, 185. Lymaenon. 184, mesosoma, dorsal; 185a, metasoma, dorsal; 185b, metasoma, ventral.