Hexaploid and decaploid races of the parthenogenetic Japanese weevil Catapionus gracilicornis Roelofs (Coleoptera: Curculionidae).

AntennAl sensillA of pArthenogenetic And bisexuAl Lissorhoptrus oryzophiLus (coleopterA: curculionidAe)

Antennal sensilla were compared in parthenogenetic females and bisexual adults of rice water weevil, Lissorhoptrus oryzophilus Kuschel (coleoptera: curculionidae), using scanning electron micrographs. the antenna of parthenogenetic females and of both sexes of bisexual reproductive weevils consisted of the scape, pedicel, and 6 flagellar segments. females, regardless of mode of reproduction, ha...

Estimating dispersal rate of the silky cane weevil (Coleoptera: Curculionidae)*

The objective of this study was to estimate the silky cane weevil rate of dispersal under near-natural conditions inside a screened enclosure where an array of buckets was baited with cut sugarcane stalks. One hundred weevils were released and weevils inside the buckets were counted hourly for 8 h, and then 24 and 48 h after release. A passive diffusion model was used to estimate the weevil’s d...

A reclassification of the weevil subfamily Cyclominae (Coleoptera: Curculionidae)

.............................................................................................................................................................................. 2 Introduction ......................................................................................................................................................................... 2 Material and methods .................

Sunflower Resistance to the Red Sunflower Seed Weevil (Coleoptera: Curculionidae)

Size-dependent feeding and reproduction by boll weevil (Coleoptera: Curculionidae).

The considerable variation in adult size of the boll weevil, Anthonomus grandis grandis Boheman, has been well documented, but the influences of adult size on reproductive rate are not known. We examined the relationship between the size of boll weevils and their feeding and oviposition. Weevils weighed to the nearest milligram were grouped into five categories based on pupal weight: < or =5, 6...