| cytogenetics analysis and testis morphology of aquatic species of the families belostomatidae, gelastocoridae, gerridae, notonectidae, and veliidae (heteroptera). | the heteroptera have holocentric chromosomes with kinetic activity restricted to the end of chromosomes. the first meiotic division is reductional for the autosomes and equational for the sexual. only a few species of this suborder have been analyzed. in this study, we observed the morphologies of the testes of the heteroptera species belostoma anurum (herrich-schäffer, 1948), belostoma micantulum (stal, 1858), gelastocoris angulatus (melin, 1929), gelastocoris flavus flavus (guérin-méneville, 1 ... | 2015 | 25797798 |
| a new species of martarega white, 1879, with new distributional records of notonectidae (hemiptera: heteroptera: nepomorpha) from brazil. | a new species of the genus martarega white, 1879 is described based on brachypterous and macropterous specimens, collected in three regions of brazil [north (state of pará), central-west (state of goiás), and southeast (state of minas gerais)]. the new species, martarega nessimiani sp. nov., is very similar to m. brasiliensis truxal, 1949. these species are differentiated by the rounded shape of the patch of thin setae on the male mesotrochanter, and the angular shape of the hemelytral process s ... | 2013 | 25243308 |