A review of the Colaspis suilla species group, with description of three new species from Florida (Coleoptera: Chrysomelidae: Eumolpinae) Author Riley, Edward G. Department of Entomology, Texas A & M University, College Station, Texas 77843 - 2475 USA text Insecta Mundi 2020 2020-12-25 2020 830 1 21 journal article 10.5281/zenodo.5353844 1942-1354 5353844 CA3621AC-1E54-464E-8096-5A17F605F67E Key to species of the Colaspis suilla species group 1. Pronotum dark red without strong metallic reflection, contrasting with dark metallic elytra ( Fig. 9–10 ); primary intervals of elytral disc flat, only interval VIII and those at extreme elytral apex costate................................................................ C . thomasi Riley , n. sp . — Pronotum metallic green or blackish-green, ranging to brownish with weak aeneous reflection ( Fig. 1–8 ); primary intervals of elytral disc with partially or completely developed costae............ 2 2(1). Dorsum unicolorous, entirely blackish-green, pronotal color not contrasting with color of elytra costae ( Fig. 5–6 ).......................................................... C . ansa Riley , n. sp. — Dorsum multicolored, pronotal color contrasting with pale color of elytral costate ( Fig. 1–4 , 7–8 )... 3 3(2). Primary elytral costae well developed and pale throughout, nearly as wide as intervening strial areas ( Fig. 3–4 ); body of male more elongate (as in Fig. 3 )......................... C . costipennis Crotch — Primary elytral costae well developed or some unequally developed or incomplete, if all are well developed, then much narrower than intervening strial areas ( Fig. 1–2 , 7–8 ); body of male shorter (as in Fig. 1 , 7 )............................................................................ 4 4(3). Costae of primary elytral intervals equally developed; elytral color generally pale or (rarely) suffuse with dark aeneous reflections; costae uniform in color, pale, not strongly contrasting with color of strial areas (most specimens) ( Fig. 1–2 ); apex of median lobe of male genitalia drawn-out, post-orificial length long ( Fig. 39 ); spermatheca bulbous distally, gradually tapering to duct connection (Fig. 47–48)............................................................... C . suilla Fabricius — Costae on primary intervals unevenly developed; elytral color generally dark greenish with costae on intervals II and VIII (and rarely IV) pale, sharply contrasting in color with strial areas ( Fig. 7–8 ); apex of median lobe of male genitalia broadly rounded with distinct nodule, post-orificial length short ( Fig. 35 ); spermatheca uniformly narrow, cylindric, with abrupt duct connection (Fig. 52).................................................................... C . skelleyi Riley , n. sp.