Colaspis suilla, Fabricius, 1801

Riley, Edward G., 2020, A review of the Colaspis suilla species group, with description of three new species from Florida (Coleoptera: Chrysomelidae: Eumolpinae), Insecta Mundi 2020 (830), pp. 1-21 : 4-5

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.

Figures

Figures 5–10. Habitus of Colaspis species, dorsal and lateral. 5) Male holotype C. ansa n. sp. 6) Female C. ansa n. sp. (Eastpoint, FL). 7) Male holotype C. skelleyi n. sp. 8) Female C. skelleyi n. sp. (Lake Marion Estates, FL). 9) Male holotype C. thomasi n. sp. 10) Female C. thomasi n. sp. (Archbold Biol. Sta., FL). All figures to scale.

Figures 1–4. Habitus of Colaspis species, dorsal and lateral. 1) Male, C. suilla F. (Lake Claiborne St. Pk., LA). 2) Female, C. suilla F. (Lake Claiborne St. Pk., LA). 3) Male, C. costipennis Crotch (Sand Hill St. Forest, SC). 4) Female, C. costipennis Crotch (Sand Hill St. Forest, SC). All figures to scale.

Figures 33–40. Colaspis suilla species group, male median lobe en-face view and male genitalia lateral view. 33) C. ansa n. sp., a. Port St. Joe, FL; b. Eastpoint, FL; c. Port St. Joe, FL. 34) C. ansa n. sp. (Eastpoint, FL). 35) C. skelleyi n. sp., a. Tiger Creek Preserve, FL; b. Lake Marion Estates, FL; c. Hopkins Prairie, FL. 36) C. skelleyi n. sp. (Lake Marion Estates, FL). 37) C. thomasi n. sp., a. Archbold Biol. Sta., FL; b. Lake Jackson, FL. 38) C. thomasi n. sp. (Archbold Biol. Sta., FL). 39) C. suilla F. a. Kirby St. Forest, TX; b Merritt Reservoir, NE; c. Hope Mills, NC; d. Schenectady, NY. 40) C. costipennis Crotch, a. Sand Hill St. Forest, SC; b. Gainesville (airport), FL; c. Gadsden County, FL; d. Gainesville, FL. En-face views (dry preparations) to scale, lateral views (wet preparations) to scale. AS = apical sclerite.