Genus Eurygaster Laporte, 1833

Eurygaster Laporte, 1833: 68. Type species by subsequent designation (Anonymous, 1838: 295): Cimex hottentotta Fabricius, 1775.

Description. Body wide oval, moderately convex, without vestiture, with dense black, brown or pale punctures. Abdominal punctures small, hardly visible. Dorsum usually brownish to pale yellow, rarely grey, varying from pale to very dark, with more or less distinct marble-like pattern (Figs. 56–104, 108).

Melanist forms occur among specimens of E. austriaca, E. integriceps, E. maura, and E. testudinaria (Figs. 61, 74, 83 and 90). Studied material of E. dilaticollis and E. laeviuscula did not include black specimens (Figs. 62–65).

Head large, more or less triangular when viewed from above, pointed or rounded apically and slightly tilted down (Figs. 13–25). Head 1.5–2.7 times as wide as long. Mandibular plates same length with clypeus (E. integriceps, E. maura and E. dilaticollis) or slightly extended (E. testudinaria, Fig. 25). Mandibular plates in E. austriaca and E. laeviuscula, longer than clypeus and often closed in front of clypeus (Figs. 19, 20 and 23). Lateral margins of mandibular plates straight or slightly convex. Antennae thin, second segment slightly curved.

Pronotum 2.1–2.7 times as wide as long. Anterolateral margins of pronotum prominently convex, straight or slightly concave. Anterior lobes of prothorax broad, extending forward and covering base of antennae. Scutellum tongue-shaped with straight parallel lateral margins, covering most of abdomen and extending beyond its tip. Visible part of corium narrow, with costal margin more or less widely concave at middle. Legs short, covered with short sharp setae. Tibiae shorter than respective femora.

Abdomen at widest point usually wider than pronotum, ventrally convex, dorso-ventrally flattened at sides. Connexivum mostly visible from above. Aedeagus with one to four pairs of conjunctival appendages. Crown of paramere divided into thorn and blade (Fig. 11). Lateral edge of paramere more or less convex and covered with setae. Shape of conjunctival appendages (Figs. 32–37, 38–49 A–C), parameres (Figs. 38–49 D–F) and postgenital segments of females (Figs. 50–55) more or less vary within each studied species.