Contact with pine processionary caterpillar (Thaumetopoea pityocampa) induces dermatitis usually located in exposed areas through a toxic-irritative mechanism. Over the last few years an immediate hypersensitivity mechanism have mainly been demonstrated in adult patients. However, there are few studies carried out in children. Objective: To evaluate a group of 16 children who experienced allerg...

– The black and red medium-sized parasitoid wasp Bassus brooksi Sharkey n. sp. (Braconidae) is described from wild-caught specimens from dry forest habitats ranging from northern Mexico to the northwestern Costa Rican coastal plain, and from specimens reared from the Area de Conservacion Guanacaste, Costa Rica. The wasp larvae develop in the caterpillars of a relatively unrelated array of at le...

• Certain plant species hyperaccumulate selenium (Se) up to 0.6% of their dry weight. It is not known whether Se hyperaccumulation offers the plants any advantage. In this study the hypothesis was tested that Se can protect plants from invertebrate herbivory or fungal infection. • Indian mustard ( Brassica juncea ) plants grown with or without Se were subjected to herbivory by caterpillars ( Pi...

1. Initial herbivory and induced plant responses can influence subsequent aboveand below-ground herbivore attack. When two life stages of the same herbivore damage different plant parts sequentially, there is strong potential for plants to respond with induced plant defence against the later attacker. Alternatively, the earlier attacker could manipulate the host plant to facilitate the later-fe...

The work highlights the issues of operation a replaceable caterpillar propeller for tractor traction class 5, an analysis design wheeled-caterpillar mobile power facilities is carried out, its positive and negative aspects during are described, detailed justification given in comparison with wheel propellers, definitions normal reactions drawn up equations moments, acting relative to points app...

Nine new species of Itaplectops Townsend (Diptera: Tachinidae) are described from Area de Conservación Guanacaste (ACG), northwestern Costa Rica. All specimens have been reared from -various species of ACG caterpillars in the families Limacodidae and Dalceridae. By combining morphological, photographic, and genetic barcode data we provide clear yet concise descriptions. The following nine new s...

Abstract Outbreaks of defoliating insects in low‐diversity tropical forests occur infrequently but provide valuable insights about outbreak ecology temperate environments and general. We investigated an extensive the endemic koa moth ( Scotorythra paludicola ), which defoliated trees Acacia ) over a third their range on Hawai‘i Island during 2013 2014. At Hakalau Forest National Wildlife Refuge...