Two new species of Zatypota (Hymenoptera: Ichneumonidae, Pimplinae) sharing the same host spider in Northeast Brazil.

 Some polysphinctine wasps of the genus Zatypota complete their life cycles upon theridiid host spiders. The host range of these wasps is usually species-specific, although in some less common associations more than one wasp species interacts with the same host spider. Here we describe and illustrate the polysphinctine wasps Zatypota baezae sp.

The wasp Flacopimpla varelae Gauld (Ichneumonidae: Pimplinae), parasitoid of the spider Achaearanea tingo Levi (Theridiidae: Theridiinae), with description of the male wasp.

Parasitoid organisms can manipulate the morphology, physiology and/or behavior of their hosts to increase their own survival (Moore 2002; Korenko et al. 2015a). Wasps of the Polysphincta genus-group sensu Gauld Dubois, 2006 (hereafter polysphinctine wasps) are well known to act exclusively as koinobiont ectoparasitoids of spiders (Gauld Dubois 2006).

Parasitism of Gauld (Hymenoptera: Ichneumonidae: Pimplinae) on Agnarsson (Araneae: Theridiidae) in northeast Brazil, with a description of the male.

Ichneumonid wasps of the Polysphincta genus-group (Polysphinctini sensu Townes hereafter "polysphinctine wasps") are exclusively koinobiont ectoparasitoids of spiders (Fitton et al. 1987; Gauld 2006). Since the first report of a spider's behavior being manipulated by a polysphinctine wasp (Eberhard 2000), several studies have since focused on unravelling the mechanisms and evolution of this association (e.