Plagiomerus, Crawford, 1910

Noyes, John Stuart, 2023, ENCYRTIDAE OF COSTA RICA (HYMENOPTERA: CHALCIDOIDEA), 4 Subfamily Encyrtinae: tribes Arrhenophagini, Habrolepidini, Cerapterocerini, Cheiloneurini, Trechnitini, Cercobelini, Polaszekiini, Protyndarichoidini, Gahaniellini and Syrphophagini (part), mainly primary parasitoids and hyperparasitoids of Coccoidea and Psylloidea (Hemiptera), Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 2 (11), pp. 1-921 : 42-43

Key to Costa Rica species of Plagiomerus

(Females)

1. Scutellum ( Figs 47, 49, 50) medially with sculpture composed of uniform, punctate-reticulate cells and with 4 bristle-like or scale-like setae at apex (these conspicuously longer than other setae and suberect, normally slightly angled forwards) .......... 2

- Scutellum ( Figs 59, 65) medially with sculpture composed of non-uniform, longitudinally elongate, polygonal cells and with only one pair of bristle-like or scale-like subapical setae (these conspicuously longer than other setae and suberect, normally slightly angled forwards) ...................................................................... 3

2 (1) Antenna ( Fig. 45) with F3 much smaller than F4 and without linear sensilla; two apical segments of clava paler than basal segment, generally yellowish, occasionally apical segment almost as dark as basal segment ..................................................... ................................................... bangaloriensis Shafee, Alam & Agarwal (p. 43)

- Antenna ( Fig. 53) with F3 subequal to F4 and with linear sensilla; clava unicolorous brown ........................................................................... hospes Timberlake (p. 45)

3 (1) Funicle ( Fig. 56) with F2 clearly larger than F1 and with linear sensilla .......................... ........................................................................................... calabes sp.nov. (p. 49)

- Funicle ( Fig. 62, 63) with F2 slightly smaller than F1 and without linear sensilla ........... ................................................................................... peruviensis (Girault) (p. 51)