Figure

Fig. 20.17. Tribe Coelostomatini, adults of Australian species (A–P) and larvae of Australian and non-Australian species (a–r). A–D, ventral morphology (A, Coelostoma fabricii (Montrouzier); B, Dactylosternum abdominale (Fabricius); C, D. hydrophiloides (MacLeay); D, D. marginale (Sharp)). E–F, head in dorsal and lateral views (E, Coelostoma fabricii; F, Dactylosternum abdominale; G, D. dytiscoides (Fabricius); H, D. marginale). I–J, antenna (I, Coelostoma fabricii; J, Dactylosternum abdominale; K, D. marginale). L–N, elytron (L, Coelostoma fabricii; M, Dactylosternum marginale; N, D. hydrophiloides). O–P, body in lateral view (O, Dactylosternum abdominale; P, D. marginale). a–c, anterior margin of larval head (a, Coelostoma orbiculare (Fabricius); b, Dactylosternum dytiscoides; c, D. cacti (LeConte)). d–e, habitus (d, Coelostoma orbiculare; e, Dactylosternum abdominale). f–h, Coelostoma orbiculare (f, head; g, mandibles; h, labium). i–l, larvae of Dactylosternum (i, head of D. abdominale; j, head of D. dytiscoides; k, mandibles of D. abdominale; l, mandibles of D. dytiscoides). m–o, antenna (m, Dactylosternum sp. B; n, Coelostoma orbiculare; o, Dactylosternum cacti). p–q, labium of Dactylosternum (p, D. sp. B; q, D. cacti). r, maxilla of Dactylosternum sp. B. c, m, o, p–r from Archangelsky (1997); e, i, k adapted from De Marzo (2000).