In Heteroptera, the division of sex chromosomes is well defined as post-reductional for most of species, i.e., the first meiotic division is equational and the second is reductional. However, in some species pre-reductional division has been observed, whereby the first meiotic division is reductional and the second is equational. These include Anisops fieberi (Notonectidae), Ectrychotes dispara...

cheilosia (convocheila) cumanica szilady is recorded for the first time from iran. this species is similar to c. laticornis rondani morphologically; however, is distinguished from this close species in male by hairy eyes (bare in c. laticornis) and in female by longer third antennal segment that is three times longer than the second segment (less than 2.5 times in c. laticornis). this finding i...

Yumtaax Boucher (Coleoptera: Passalidae) is an endemic genus from the temperate sierras of Mexico and includes six narrowly distributed species. Yumtaax species have been assigned to several genera of Passalidae throughout history, and a phylogenetic approach is necessary to understand species delimitation and interspecific relationships. This study reconstructed the molecular phylogeny of six ...

The corn leafhopper Dalbulus maidis (Hemiptera: Cicadellidae), is an important corn pest in most of tropical and subtropical America. This leafhopper has a rich natural enemy complex of which parasitoids and pathogens are the most studied; knowledge on its predators is limited. We noted the presence of the native assassin bug Zelus obscuridorsis (Hemiptera: Reduviidae) predating diverse motile ...

Criocerine leaf beetles found in Nepal feeding on Dioscorea bulbifera (L.), an invasive weed of Asian origin, were identified as Lilioceris cheni Gressitt and Kimoto based on a synopsis of the Oriental Lilioceris species and review of the Lilioceris impressa species group. All the continental, Oriental species included in the group are diagnosed and illustrated, and a key for their identificati...

The New World assassin bug genus Zelus Fabricius, 1803 (Insecta: Hemiptera: Heteroptera: Reduviidae: Harpactorinae: Harpactorini) is revised based on more than 10,000 specimens. Seventy-one species are recognized and twenty-four described as new: Zelus aithaleos sp. n., Zelus amblycephalus sp. n., Zelus antiguensis sp. n., Zelus auralanus sp. n., Zelus bahiaensis sp. n., Zelus banksi sp. n., Ze...

The species of Stenothemus Bourgeois, 1907 from Southwest China are reviewed. Three transferred to this genus, S. davidi (Pic, 1926) comb. nov. (from Malthacus Kirby, 1837), minutissimus 1933) Micropodabrus Pic, 1920) and singularicollis Lycocerus Gorham, 1895). Two new synonyms suggested, dinshuiensis Švihla, 2011 syn. is synonymized with melleus 2005 singularicollis. shaanxiensis 2004 stat. r...