Berytidae

Swanson, Daniel R., Taylor, Steven J. & Heads, Sam W., 2017, Nine true bugs (Heteroptera) newly-discovered in Illinois, Zootaxa 4269 (4), pp. 571-585 : 575-576

Key to the Berytidae of Illinois

1 Head long, tylus anteriorly produced into prominent down-curved cylindrical process; scutellum without basal spine or tubercle; ostiolar process short, apically flared and rounded, neither long nor produced into spine-like metasternal process; eyes very distant from base of head; venter strongly punctate; ocelli with teardrop-shaped base; body with appressed sericeous or wooly pubescence, especially on head, pronotum, and along rostral groove ( Berytinae : Neoneides )...... Neoneides muticus

- Head short, tylus not anteriorly produced, although sometimes bearing fine spine or short conical tubercle; ostiolar process produced into tubercle or generally into long canaliculate, twisted, spine-like metasternal process; eyes near to base of head;

venter not punctate; ocelli with round base; body generally without pubescence, at least never on pronotum ( Metacanthinae ).................................................................................................... 2 2 (1') Fourth antennomere shorter than length of head; apex of ostiolar process apically rounded or slightly angulate, lacking a spine; channel of scent gland strongly twisted to run along outer surface basally, then curving sharply to terminate along dorsal surface; size smaller, 4.5–6.5 mm ( Metacanthus ); abdomen frequently with greenish tinge........... Metacanthus multispinus

- Fourth antennomere longer than length of head; apex of ostiolar process ending in sharp to blunt spine; channel of scent gland lying on same side of process for its entire length; size larger, 6.0–10.0 mm ( Jalysus ); abdomen usually testaceous or brownish................................................................................................... 3

3 (2’) Sides of head before and behind eyes with only few scattered punctures, mostly near ventral margin; pygophore with apical transverse depression; parameres somewhat slender, with one small outer process...................... Jalysus spinosus

- Sides of head before and behind eyes strongly punctate; pygophore with median carina, ridges appearing apically T-shaped; parameres thickened, with small outer process and two conspicuous processes at middle of mesal margin... Jalysus wickhami