Revising Spider Egg-predating Fly Records (Diptera: Sarcophagidae): New Insights on Prey, Taxonomy, and Distribution of () Hall in Southern South America.

Flesh flies (Diptera: Sarcophagidae) exhibit a wide range of feeding habits including necrophagy, coprophagy, kleptoparasitism, parasitism, and predation. Among them are species of Meigen belonging to the subgenera Lopes and Enderlein that are specialized predators of spider eggs. These flies hover around spider webs and lay their larvae on the spider egg sac.

A New Darwin Wasp (Hymenoptera: Ichneumonidae) and New Records of Behavioral Manipulation of the Host Spider Leucauge volupis (Araneae: Tetragnathidae).

Some ichneumonid wasps of the Polysphincta group of genera (Hymenoptera: Ichneumonidae: Pimplinae) induce behavioral modifications in their host spiders during a specific moment of their development, resulting in the construction of webs that differ in several aspects from those constructed by unparasitized individuals. In this study, we describe the parasitoid wasp Hymenoepimecis pinheirensis sp. n.

Seven new species of spider-attacking Viereck (Hymenoptera, Ichneumonidae, Pimplinae) from Ecuador, French Guiana, and Peru, with an identification key to the world species.

Seven new species of Viereck are described from Peruvian Andes and Amazonia, French Guiana and Ecuador: Pádua & Sääksjärvi, , Pádua & Sääksjärvi, , Pádua & Sääksjärvi, , Pádua & Sääksjärvi, , Pádua & Sääksjärvi, , Pádua & Sääksjärvi, , and Pádua & Sääksjärvi, In addition, the male of the Pádua & Sobczak, 2015 is described, new faunistic records for the genus provided, as well as an illustrated identification key to all known species of the genus.

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.