Taxonomy of the Cape Verde endemic weevil genus Dinas (Coleoptera: Curculionidae: Entiminae). Part I: Description of a new subgenus, and two new species from S?o Nicolau Island

Skuhrovec Jiří, Batelka Jan
Acta Entomologica Musei Nationalis Pragae 54(1): 315-336, 2014
Views: 988
Abstract: An extensive material of the Cape Verde endemic weevil genus Dinas Wollaston, 1867 (Curculionidae: Entiminae) is revised. Two subgenera are recognized based on the external morphology and biology of adults. Microspina subgen. nov. is established for the group with smaller-sized adults which are flower-eaters adapted to habitats with Macaronesian endemic flora; 10 species are transferred to the subgenus: D. (M.) angusticeps Roudier, 1957, D. (M.) angustula Wollaston, 1867, D. (M.) elliptipennis Wollaston, 1867, D. (M.) heckeli Geisthardt, 1995, D. (M.) micans Roudier, 1957, D. (M.) obsita Wollaston, 1867, D. (M.)  pallipes Roudier, 1957, D. (M.) punctipennis Roudier, 1957, D. (M.)  sitonaeformis Wollaston, 1867, and D. (M.) viridisquamea Roudier, 1957. Contrary, adults of Dinas s. str. were found on the ground and under stones only. The Dinas fauna of S?o Nicolau Island is studied in detail. Dinas (Microspina) afonsoi sp. nov. and D. (Dinas) strakai sp. nov. are described from the eastern part of the island. The types and new material of the remaining two species from the western part of the island, D. (Microspina) angusticeps and D. (Microspina) sitonaeformis, are reviewed, and lectotype for the latter is designated. An identification key to all species known from S?o Nicolau is provided. The origin of Dinas and its biogeographic affinities are discussed. Distributional pattern of the genus within the archipelago, particularly in S?o Nicolau are commented. An updated list of all known Dinas species is provided.
Key words: Coleoptera; Curculionidae; Entiminae; Dinas; new subgenus; new species; new combination; check-list; adaptive radiation; insularity; Macaronesia; Cape Verde Islands
Papers
Chewing lice (Phthiraptera: Amblycera et Ischnocera) from wrens (Passeriformes: Troglodytidae), with description of a new species of MyrsideaA new species of Eremiothrips from Iran (Thysanoptera: Thripidae)Preimaginal stages and biology of Bactericera lyrata (Hemiptera: Psylloidea: Triozidae)Notes on the tribe Tongini, with description of a new species of the genus Orthophana from northern Vietnam (Hemiptera: Fulgoroidea: Nogodinidae)A new species of Cofana associated with grasses from India (Hemiptera: Cicadellidae: Cicadellinae)Taxonomic revision of the Neotropical genus Oiovelia (Hemiptera: Heteroptera: Veliidae)Revision of the genus Tachytatus (Heteroptera: Lygaeoidea: Rhyparochromidae)Afromenotes hirsuta, a new genus and species of Eumenotini from the Democratic Republic of the Congo (Hemiptera: Heteroptera: Dinidoridae)A revision of the genus Amblycara (Hemiptera: Heteroptera: Pentatomidae)Taxonomy and biology of the bromeliad-inhabiting genus Lachnodacnum (Coleoptera: Hydrophilidae: Sphaeridiinae)New species and subspecies  of Octavius from South Africa, with a key and additional distribution records (Coleoptera: Staphylinidae: Euaesthetinae)Batrisceniola fengtingae sp. nov., the first record of the genus in China (Coleoptera: Staphylinidae: Pselaphinae)A new Callosides species from Ecuador with uniquely built membranous mandibles (Coleoptera: Hybosoridae: Anaidinae)New data about 'nalassoid' genera from south-eastern Anatolia with description of a new species of Zophohelops (Coleoptera: Tenebrionidae)A new species of the genus Callomecyna from Taiwan (Coleoptera: Cerambycidae)Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae)Taxonomy of the Cape Verde endemic weevil genus Dinas (Coleoptera: Curculionidae: Entiminae). Part I: Description of a new subgenus, and two new species from S?o Nicolau IslandBiology and morphology of immature stages of Coniocleonus nigrosuturatus (Coleoptera: Curculionidae: Lixinae)Two new species of Austrolimnophila from the Mediterranean (Diptera: Limoniidae)Cladistic analysis of Rheochlus and related genera, with description of a new species (Diptera: Chironomidae: Podonominae)A new species of Feuerborniella (Diptera: Psychodidae) from the paramo of ColombiaThe identity and family affiliation of Scelomyza hirticornis (Diptera: Opomyzidae, Anthomyzidae), with a new checklist of Afrotropical AnthomyzidaeCatalogue of the type specimens deposited in the Department of Entomology, National Museum, Prague, Czech Republic. Polyneoptera