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.

A striking new species of Smith, 1877 (Hymenoptera: Ichneumonidae; Pimplinae) from South America.

Background: Smith, 1877 is a genus of Darwin wasps characterised by their large bodies and long ovipositors, that includes more than 75 species worldwide, 20 of which occur in the Neotropical Region. Due to recent efforts, the number of species of this genus continues to increase in South America.

New Information: A new iridescent species of Pimplinae, sp.

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.

Parasitism of Pádua & Oliveira (Hymenoptera: Ichneumonidae: Pimplinae) on Mello-Leitão (Araneae: Tetragnathidae) in Brazilian Amazonian.

Background: A parasitoid wasp Pádua & Oliveira, 2015 was recorded parasitizing, for the first time, a female spider of Mello-Leitão, 1940 in the Amazon rainforest, Brazil. Images, description of the cocoon and comments about this interaction were added.

New Information: First record of parasitizing with description of cocoon and comments about this interaction.