Genus Dryinus Latreille, 1804

Diagnosis.

Female: macropterous; mandible with 1-4 teeth; occipital carina complete, or incomplete, or absent; antenna without tufts of long hairs on segments 5-10, usually with rhinaria, occasionally without; antennal segment 3 less than five times as long as segment 2; occasionally antennal segment 3 more than five times as long as segment 2 (in this case, notauli occasionally complete and scutum completely sculptured by numerous and parallel longitudinal keels); palpal formula 6/3; pronotal tubercle reaching or not tegula; forewing with three cells enclosed by pigmented veins (costal, median and submedian); protarsus chelate; chela with rudimentary claw; segment 5 of protarsus less than twice as broad as enlarged claw; enlarged claw as long as, or shorter than protibia; tibial spurs 1/1/2, rarely 1/1/1. Male: macropterous; mandible with 1-3 teeth; palpal formula 6/3; occipital carina complete or incomplete; lateral regions of prothorax not continuous with mesopleura; epicnemium visible; mesosternum fused with mesopleura and not distinct; forewing with three cells enclosed by pigmented veins (costal, median and submedian); paramere without dorsal process; tibial spurs 1/1/2.

Distribution.

Worldwide.

Hosts.

Acanaloniidae, Cixiidae, Dictyopharidae, Flatidae, Fulgoridae, Issidae, Lophopidae, Ricaniidae, Tropiduchidae (Guglielmino and Olmi 1997, 2006, 2007)

Species.

Two hundred and seventy-nine.

Remarks.

The Neotropical species of Dryinus are divided into four groups, according to the following key (Olmi 1993):

Key to fossil species of the lamellatus group

Females (males unknown)