Heteroperreyia hubrichi Malaise (Hymenoptera: Pergidae) try a prehistoric nonstinging wasp indigenous to northern Argentina and you will southeastern Brazil. The brand new biology, environment, and you may host a number of the brand new sawfly H. hubrichi have been examined in Brazil, Florida, and you will Hawaii (Vitorino et al. 2000, Medal mais aussi al. 1999, Hight ainsi que al. 2002, Cuda et al. 2005). This new larval stage on the bug are phytophagous (plant eating). Occupation investigation amassed in Brazil mean this types is actually bivoltine (a few years annually). Gender ratio of the people is roughly 1:1 (men in order to girls) whenever reproduction are bisexual, nevertheless the sawfly including shows arrhenotoky; mated people generate female and unmated girls develop merely men. Within the Brazil, a great pupal diapause several months occurs in the summertime (December to March) and cold temperatures (Summer so you can August).
Abreast of introduction throughout the pupal phase, women companion and you may/otherwise oviposit into the more youthful woody twigs that will be next to the a great deal more sensitive critical propels. So it decisions permits the sawfly to stop the newest dangerous resin well-known from the Brazilian peppertree’s terminal progress. The female uses this lady spotted-for example ovipositor to chop the fresh base tissue and you will submit their egg amongst the thin bark and phloem, the vascular cells you to definitely transfers diet on simply leaves (Profile 3). (далее…)