Copulatory linking of male and female genitalic structures in 11 Neotropical species of Chrysomelidae and one species of Megalopodidae was studied by freezing and then dissecting pairs of beetles in copula. In Megalopus armatus (Megalopodidae) the male has a long endophallus with complex membranous protuberances and a terminal flagellum that probably reaches the spermatheca. In the subfamily Eu...

this report is part of a national project for gathering and classifying the arthropod seed feeders in different provinces of iran between 2008–2014. in this paper, nineteen host species with their areas of distribution are presented for twelve species of seed beetles (chrysomelidae: bruchinae). most of the identified host plants (84%) belong to the family fabaceae (leguminosae). in addition, al...

Emergence phenology and fitness attributes of several Colorado potato beetle, Leptinotarsa decemlineata (Say), populations were measured under field and greenhouse conditions. Anecdotal observations by producers and pest managers in many locations of the upper Midwest increasingly suggested that select populations of Colorado potato beetle were emerging over a longer period in the spring and we...

Inundative releases of beneficial insects are frequently used to suppress pest insects but not commonly attempted as a method of weed biological control because of the difficulty in obtaining the required large numbers of insects. The successful establishment of a flea beetle complex, mixed Aphthona lacertosa (Rosenhauer) and Aphthona nigriscutus Foundras (87 and 13%, respectively), for the con...

The genus Taiwanaenidea Kimoto, 1984 is a little-known galerucine genus known only with original description, which lacks illustrations. A number of specimens belonging to this genus are now available for study with effective collection made by Taiwan Chrysomelid Research Team. Two new species, T. cheni Lee and Beenen sp. nov. and T. jungchangi Lee and Beenen sp. nov. are here described. The ot...

The cottonwood leaf beetle, Chrysomela scripta F., is the most serious defoliator of young plantation-grown Populus in the eastern United States, yet there is a paucity of data on larval feedingperformance acrossPopulus clones used in treebreeding. Field experimentswere conducted in 1998 and 1999 to determine the overall feeding performance of larval C. scripta on 8 Populus selections from a pe...

The leaf beetle Diorhabda elongata Brullé subspecies deserticola Chen, collected in northwestern China, has been released in the western United States to control tamarisk (Tamarix spp.). While beetle establishment and saltcedar defoliation have been noted at northern study sites, this species has not established at latitudes south of the 38th parallel. Critical daylength for diapause induction ...

An Orientalflea beetle genus Jacobyana Maulik, 1926 including 7 species from India, Nepal, Vietnam and Sri Lanka, is reported in the Afrotropical Region for the first time. It is represented there by three new species, Jacobyana bezdekisp. n., Jacobyana centrafricanasp. n., and Jacobyana sudafricanasp. n. Micrographs of male and female genitalia, scanning electron micrographs of some diagnostic...