Taxonomic changes in the genus Diabrotica Chevrolat (Coleoptera: Chrysomelidae: Galerucinae): results of a synopsis of North and Central America Diabrotica species.

Morphological and molecular characterization of a new species of Diabrotica (Coleoptera, Chrysomelidae, Galerucinae)

The new species Diabrotica wartensis Cabrera & Sosa-Gómez was found feeding on roots and leaves of sunflower and soybean in the north of the state of Paraná. A set of characters of diagnostic value: mouthparts, hind wing venation, binding patch, metendosternite, and details of male and female genitalia previously overlooked in the genus was provided. In addition to the morphological characteriz...

Hybridization in Diabrotica barberi Smith and Lawrence and Diabrotica longicornis (Say) (Coleoptera: Chrysomelidae): Biology, behavior, field introgression, and a reevaluation of taxonomic status

A new species of the genus Crepidodera Chevrolat (Coleoptera: Chrysomelidae) from Baltic amber.

A new flea-beetle species, Crepidodera svetlanae sp. nov. (Coleoptera: Chrysomelidae: Galerucinae: Alticini) is described and illustrated from the Baltic amber. The new species is compared with the fossil and recent species of the genus. A key to species of flea beetles known from fossil resin is provided.

Revision of “Phyllobrotica” from Taiwan with description of Jolibrotica gen. n. (Coleoptera, Chrysomelidae, Galerucinae)

All Taiwanese species formerly classified the genus Phyllobrotica Chevrolat, 1836 are revised. Jolibrotica Lee & Bezděk, gen. n., is described for Phyllobrotica sauteri (Chûjô, 1935) (Taiwan, China: Guangxi) and Phyllobrotica chujoi Kimoto, 1969 (Taiwan). Phyllobrotica shirozui Kimoto, 1969 is transferred to the genus Haplosomoides. All species are redescribed and their diagnostic characters il...

Evolution of diabroticite rootworm beetle (Chrysomelidae) receptors for Cucurbita blossom volatiles.

The diabroticite rootworm beetles coevolved with plants of the family Cucurbitaceae as demonstrated by their feeding dependence on the tetracyclic triterpenoid cucurbitacins. These beetles also exhibit strong attraction to phenylpropanoid volatile components of Cucurbita blossoms. A mixture of 1,2,4-trimethoxybenzene, indole, and (E)-cinnamaldehyde, all blossom components, is highly attractive ...