Synopsis of warty leaf beetle genera of the world (Coleoptera, Chrysomelidae, Cryptocephalinae, Chlamisini) Author Chamorro-Lacayo, Maria National Museum of Natural History, Washington D. C. ,, Author Konstantinov, Alexander Systematic Entomology Laboratory, MRC- 168 Washington, United States of America text ZooKeys 2009 2009-04-28 8 8 63 88 journal article 10.3897/zookeys.8.90 125703f8-ddaa-4f28-9673-97b7c469b05c 1313–2970 576444 Key to genera 1 Head with large laminar projection in occipital region. ( Figs. 6 A, B, D )...... ............................. Kakita Chamorro-Lacayo & Konstantinov , new name – Head without large laminar projection in occipital region .......................... 2 2(1) Legs atypical; femora and tibiae flattened; tarsi reduced, retractile, able to fit into groove along apex of tibia ( Fig. 3 B ) ... Carcinobaena Lacordaire, 1848 – Legs normal and not as above ( Fig. 3 E, H ) ................................................ 3 3(1) Prosternum nearly rectangular, with posterior margin slightly narrower than anterior margin ( Fig. 3 H ). Pronotal and elytral tubercules reduced.............. .................................................................... Melittochlamys Monrós, 1948 – Prosternum varying in shape, triangular, or angulate between mesocoxae, but never rectangular, with posterior margin much narrower than anterior margin ( Figs. 3 A, I ). Pronotal and elytral tubercules well developed ................ 4 4(3) Head with vertex longitudinally impressed. Tarsal claws simple. Body about 10 mm long and longer, bright metallic color. Pronotal and elytral tubercules pronounced ................................................................. Fulcidax Voet, 1806 – Head with vertex entire or convex. Tarsal claws usually appendiculate, if simple, see Exema . Body less than 10 mm long ............................................... 5 5(4) Prosternal process distally widened between midcoxae ( Fig. 3 D ). Metascutellum broadly exposed ( Fig. 1 E ) ........................ Diplacaspis Jacobson, 1924 – Sides of prosternal process convergent or serrate, if slightly widened between mesocoxae, then metascutellum not exposed ( Fig. 1 A ) .............................. 6 6(5) Pronotum with 6 distinct, small, sharp, longitudinal carinae that converge medially near posterior margin (fan). Small size, elongate, uniform hue, generally black ( Figs. 1 A, B ) .............................. Aulacochlamys Monrós, 1952 – Pronotum with or without bumps, but never with 6 longitudinal carinae that converge medially near posterior margin..................................................... 7 7(6) Head not completely retracted into the prothorax; mandibles in males larger than in females ( Fig. 4 K, L ). Prosternum strongly and abruptly constricted beyond anterior margin; prosternal process more than ¾ as long as prosternum. ( Figs. 3 K, L ) ................................. Pseudochlamys Lacordaire, 1848 – Head completely retracted into prothorax; mandibles in males as large as in females ( Fig. 4 A ). Prosternum gradually constricted at about 2/3 of its length ......................................................................................................... 8 8(7) Metasternum anteriorly elongated into deltoid projection ( Fig. 3 G ). Antennae serrate beyond antennomere 5 ...................... Hymetes Lacordaire, 1848 – Metasternum anteriorly concave with two denticles on sides of concavity ( Fig. 3 B ). ................................................................................................... 9 9(8) Body usually metallic in color. Frons on canthus of eye usually with yellow spots, or if without yellow spots, then elytron with two velvety spots. Male ejaculatory guide asymmetrical, with sheath ( Fig. 7 A ).................................. ........................................................................ Neochlamisus Karren, 1972 – Body usually not metallic in color. Frons on canthus of eye usually without yellow spots (if face entirely or partly yellow, with yellow area extending onto canthus, elytra without velvety spots). Male ejaculatory guide symmetrical, without sheath ( Fig. 7 B ) .......................................................................... 10 10(9) Males without spines or spinulae on first ventrite. Fifth antennomere nearly as large as 6 th . Sutural serration of elytra usually incomplete (suture entire immediately following mesoscutellum) ( Fig. 1 D ). Prosternum posteriorly pointed (narrowed), posteriorly much narrower than anterior margin........... ....................................................................... Chlamisus Rafinesque, 1815 – Males with spines or spinulae on first ventrite. Fifth antennomere much smaller than 6 th . Sutural serration of elytra complete ( Fig. 1 F ). Pronotum without longitudinal carinae................................. Exema Lacordaire, 1848