Euagathis Szépligeti,1900

(Fig. 10 C)

Euagathis Szépligeti,1900: 62 . Type species: Euagathis bifasciata Szépligeti, 1900, by subsequent designation Viereck, 1914: 32; Shenefelt, 1970b: 408 [catalogue]; Bhat & Gupta, 1977: 183 [key, description]; Chou & Sharkey, 1989: 186 [key, description]; Simbolotti & Achterberg, 1990: 3 [key, description]; Sharkey, 1992: 441 [in tribe Disophrini]; Simbolotti & Achterberg, 1995: 6 [key, description]; Sharkey, 1996:21 [key, description]; Achterberg & Chen, 2002: 311 [key, description]; Achterberg, 2004: 2 [key, description]; Yu et al., 2005 [catalogue]; Sharkey et al., 2006: 558 [notes, phylogeny, in tribe Disophrini]; Sharkey et al., 2009: 42 [key, description].

Chromomicrodus Ashmead, 1900: 129. Type species: Chromomicrodus abbotti Ashmead, 1900, by monotypy; Baltazar, 1961: 391 [synonym of Euagathis]; Shenefelt, 1970b: 409 [synonym of Euagathis].

Holcotroticus Cameron, 1902: 41. Type species: Holcotroticus ruficollis Cameron, 1902, by monotypy; Shenefelt, 1970b: 417 [catalogue]; Sharkey, 1992: 441 [in tribe Disophrini]; Simbolotti & Achterberg, 1995: 6 [synonym of Euagathis].

Balcemena Cameron, 1903: 130. Type species: Balcemena longicollis Cameron, 1903, by monotypy; Shenefelt, 1970b: 368 [catalogue]: Bhat & Gupta, 1977: 173 [catalogue]; Sharkey, 1992: 441 [in tribe Disophrini]; Achterberg & Chen, 2002: 313 [synonym of Euagathis].

Diagnosis. Length: 5–12 mm; colour: commonly yellow and dark brown; inter–antennal region with paired carinae present (e.g., Figs 6 B and 7B); frons without lateral carinae; notauli present, with (e.g., Fig. 3 B) or without sculpturing, often complete or only present anteriorly; tarsal claws cleft, but base not pectinate (e.g., Fig. 2 A); mid tibial preapical spines absent; fore tibial spur short, not exceeding 0.75 length of basitarsus (e.g., Fig. 2 F); hind trochantellus without longitudinal carinae; fore wing cell 1–RS always present and sessile, vein 2–RS2 absent or basal sector only present; ovipositor short, length less than 0.5 metasoma length (e.g., Fig. 10 D).

Comments. Euagathis species display the characteristic yellow and dark brown colour pattern associated with a putative mimicry complex that also includes species of Cremnops and Disophrys . Euagathis is closely related to Coccygidium and Hypsostypos (Sharkey et al. 2006) but can be distinguished from both genera by the absence of longitudinal carinae on the hind trochantellus.

Species richness and distribution. Euagathis is represented in Australia with about five species, only one of which is described. The genus occurs in the Torresian and northern Kosciuskan regions of the continent.