the first assess of the haplotypes from coi gene sequences in species of spittlebugs (cicadomorpha: hemiptera) and aquatic true bugs (gerromorpha and nepomorpha: hemiptera) in brazil.we made the first analysis of the coi gene sequences of 22 species of spittlebugs and aquatic true bugs sampled in são paulo state (brazil) and used this information to determine the variability within these groups. considering each codon position, we observed that the third base was the most variable, and the first base was the most conserved. among species, mahanarva fimbriolata and deois flavopicta had the greatest genetic distance (0.181), and notozulia entreriana and mahanarva sp had the sm ...201324301909
warm-season (c4) turfgrass genotypes resistant to spittlebugs (hemiptera: cercopidae).screening for resistance to insect pests is one of the early stages of grass breeding programs. pasture spittlebugs are sap-sucking insects that potentially cause severe damage to turfgrasses, including the loss of functional quality and perenniallity. the brazilian flora has a large number of grass species with wide morphological variability and adaptability to different soil and climate conditions that can potentially be used as lawns. however, no study has screened turfgrass genotypes for res ...201627329631
soil temperature and diapause maintenance in eggs of the spittlebug, deois flavopicta (hemiptera: cercopidae).diapausing eggs of the neotropical pasture pest, deois flavopicta (stal) (hemiptera: cercopidae), were exposed to low overnight temperatures that simulated field conditions during the dry season (23/12, 23/15 and 23/18 degrees c day/night), for different periods (0-60 days). after treatment, eggs were kept at 28 degrees c and contact water (100% humidity) until hatching. a group of diapausing eggs were kept all the time under this last condition as a control treatment. time for hatching (in degr ...200112071316
meiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs deois flavopicta, mahanarva fimbriolata and notozulia entreriana (hemiptera, auchenorrhyncha).spittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical american beef cattle industry. spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for this group of insects. for these reasons, we conducted this work, in which the spermatogenesis and nucleolar behavior of deois flavopicta, mahanarva fimbriolata and notozulia entreriana were studied. the males possessed testes in the shape of a "b ...201021637477
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