Search

The egg parasitoid Anaphes nitens (Hymenoptera: Mymaridae) parasitizes the Eucalyptus snout‐beetle Gonipterus platensis (Coleoptera: Curculionidae), one of the main defoliating beetles of Eucalyptus. Outbreaks of this pest are being recorded in areas with low parasitism rates by A. nitens. Endosymbiont bacteria can affect the reproductive characteristics of host insects increasing or decreasing the parasitism rate. The objectives of this study were to identify the presence, phylogeny and transmission modes of endosymbiont bacteria in A. nitens and G. platensis. Six populations of A. nitens and one of G. platensis were evaluated. Genomic DNA from these populations was extracted and nine genera of cell endosymbionts were searched by PCR. Three species of the Enterobacteriaceae family, Erwinia amylovora, Serratia grimesii, Yersinia massiliensis and the cell endosymbiont Rickettsia belli were identified in all A. nitens populations. Only Serratia grimesii was found in G. platensis. The presence of E. amylovora, Y. massiliensis and R. belli in the F1 and F2 generations indicates vertical transmission in A. nitens, while S. grimesii is vertically transmitted in G. platensis. [ABSTRACT FROM AUTHOR]

Cydianerus latruncularius Perty (Coleoptera: Curculionidae) were observed associated with trumpet trees (Handroanthus spp.) in Brasília, Brazil, in 2019. To contribute with information about their habits and damage, 15 trees (Handroanthus impetiginosus = 7, H. roseoalbus = 4, and Tabebuia rosea = 4) were evaluated and 31 individuals of C. latruncularius were captured, often found within or close to leaf rolls caused by the psyllid Trioza tabebuiae Burckhardt & Santana (Hemiptera: Triozidae). The damage caused by C. latruncularius consists of irregular injuries at the leaves' edges. This is the first report of this beetle occurring on trumpet trees. [ABSTRACT FROM AUTHOR]

This work reports the ocurrence of Dinoderus minutus (Bostrichidae), known as the 'bamboo drill', in the northern state of Mato Grosso, Brasil. The beetles were collected in forest plantations of Eucalyptus urograndis in 2016. Collection was performed using ethanol traps Car valho 47 (adapted). This report highlights the need for further studies, as D. minutus can cause significant economic damage by building galleries inside tree trunks. [ABSTRACT FROM AUTHOR]