| howardula dominicki n. sp. infesting the tobacco flea bettle in north carolina. | howardula dominicki n. sp. is described from specimens collected from the tobacco flea beetle, epitrix hirtipennis (melsheimer), at oxford, north carolina , and is distinguished from other members of the genus . parasitism by h. dominicki sterilized female flea beetles and often led to the death of larvae. | 1977 | 19305620 |
| biological activity of acyl glucose esters from datura wrightii glandular trichomes against three native insect herbivores. | datura wrightii is dimorphic for leaf trichome type in southern california. "sticky" plants produce glandular trichomes that secrete acylsugars, whereas velvety plants produce nonglandular trichomes. glandular trichomes confer resistance to some potential insect herbivores and are associated with reduced feeding in the field by two native coleopteran herbivores: the tobacco flea beetle, epitrix hirtipennis, and a weevil, trichobaris compacta. in contrast, another native beetle, lema daturaphila, ... | 2005 | 16222787 |
| analysis of 2,4,6-nonatrienal geometrical isomers from male flea beetles, epitrix hirtipennis and e. fuscula. | geometrical isomers of 2,4,6-nonatrienal have been reported from a variety of food- and insect-related sources. it was discovered recently that the eggplant flea beetle, epitrix fuscula, uses the (2 e,4 e,6 z) and (2 e,4 e,6 e) isomers as components of its male-produced aggregation pheromone. here, we learned that the related species, e. hirtipennis, also emits a blend of 2,4,6-nonatrienals, including isomers not previously characterized. patterns in emission and response suggest a pheromonal fu ... | 2008 | 18553913 |
| integrated pest management practices reduce insecticide applications, preserve beneficial insects, and decrease pesticide residues in flue-cured tobacco production. | integrated pest management (ipm) recommendations, including scouting and economic thresholds (ets), are available for north carolina flue-cured tobacco growers, although ets for key pests have not been updated in several decades. moreover, reported ipm adoption rates by flue-cured tobacco growers remain low, at < 40%, according to nc cooperative extension surveys conducted during the last four years. previous research has suggested that timing insecticide treatments using currently available ets ... | 2016 | 27660424 |
| molecular identification of epitrix potato flea beetles (coleoptera: chrysomelidae) in europe and north america. | epitrix species (coleoptera: chrysomelidae) feed mostly on plants from the family solanaceae and some of them are major pests of potato crops. all epitrix species are morphologically highly similar, which makes them difficult to identify and limits their study and management. identification of species is mostly based on the observation of the genitalia and requires a high level of expertise. here, we propose a tool to reliably identify all developmental stages of the most economically important ... | 2013 | 23448201 |
| updated checklist of balearic leaf beetles (coleoptera: chrysomelidae). | the first updated checklist of balearic leaf beetles (chrysomelidae) since 1960 is presented here, evincing the presence of 118 species. this estimation is clearly lower than the 141 species reported in the only list available to date (jolivet, 1953), and the dissimilarity is even more pronounced if we take into account that 22 new species have been added during this period. the possible explanations for these differences are discussed. the main island in the archipelago holds most of the specie ... | 2017 | 28610289 |