A revision of the genus Macrolygistopterus Pic, 1929 (Coleoptera, Lycidae, Calochromini) Author Ferreira, Vinicius S. text Zootaxa 2016 4105 4 321 338 journal article 10.11646/zootaxa.4105.4.2 23dcb341-8737-42cb-bef7-7f29437f2788 1175-5326 271306 07266FCB-8D6E-4AEA-9159-ECE7D8D31ED0 Key to the world Calochromini (modified from Green, 1954 ) 1. Head prolonged in rostrum, antenniferous tubercles not developed, mandibles distant when closed never overlapping...... 2 - Head not prolonged in rostrum, antenniferous strongly developed, mandibles when closed overlapping or approximated.... 4 2. Elytral costae well developed and strongly demarcated, some of which partially obliterated, apex of elytra with traces of reticulated cells, specimens medium to big size.......................... Macrolygistopterus Pic, 1929 (Neotropical region) - Elytral costae not developed, not obliterated, without traces of reticulate cells at apex, specimens small to medium size..... 3 3. Labrum completely free, distinctly visible, mandibles curved, more or less connate to labrum, secondary elytral costae absent, dorsal pubescence decumbent, anterior coxae approximated, rostrum of variable shape....................................................... .. Lygistopterus Mulsant, 1838 (Neotropical, Afrotropical, Neartic, Paleartic and Oriental regions) - Labrum suture sometimes indistinct, apparently fused with rostrum, mandibles straight or curved, secondary elytral costae weakly developed, dorsal pubescence long and erected, anterior coxae not approximated, rostrum elongated and stout.............................................................. Lucaina Dugés, 1879 (Nearctic and Neotropical regions) 4. Elytral pubescence sparse, mostly confined to the elytral costae, invervals subglabrous. Anterior coxae distinctly separated................................................................... Caloptognatha Green, 1954 (Nearctic region) - Elytra uniformly pubescent. Anterior coxae contiguous or very approximated...................................... 5 5. Elytra with reticulate cells at apex, with 4 primary elytral costae well defined and 5 secondary costae weakly developed, antennae serrate....................................................... Adoceta Bourgeois, 1882 (Afrotropical region) - Elytra without reticulated cells at apex, with 4 primary elytral costae well defined and secondary usually absent, antennae serrate or flabellate............ Calochromus Guérin-Méneville, 1833 (Nearctic, Afrotropical, Oriental and Australian regions)