New Species of Entypus (Hymenoptera: Pompilidae) and notes on the natural history of some Atlantic Forest spider wasps Author Lopez, Vinicius M. Graduate Program in Entomology, Department of Biology, University of São Paulo (USP), Ribeirão Preto 14040 - 901, Brazil. Lestes Lab, Department of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil. Author Cardoso, Renan Kobal De Oliveira Alves Author Cezário, Rodrigo R. Graduate Program in Entomology, Department of Biology, University of São Paulo (USP), Ribeirão Preto 14040 - 901, Brazil. Lestes Lab, Department of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil. Author Guillermo-Ferreira, Rhainer Graduate Program in Entomology, Department of Biology, University of São Paulo (USP), Ribeirão Preto 14040 - 901, Brazil. Lestes Lab, Department of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil. Author Dos Santos, Eduardo F. São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences, São José do Rio Preto, SP, Brazil. Corresponding author. mutillidaebr @ gmail. com text Zootaxa 2021 2021-11-04 5061 2 361 368 journal article 3582 10.11646/zootaxa.5061.2.8 40d3084e-f2a5-483c-8497-724c72414a59 1175-5326 5649663 E90E2628-4491-4AEA-A106-D4A7E6EB45FC Poecilopompilus On two occasions, a female Poecilopompilus sp. was observed transporting an adult female of an undetermined species of crab spider ( Misumenops sp. ) (Video 3). The wasp dragged the paralyzed crab spider with its dorsal side upwards. The wasp carried her host by grasping a foreleg with the mandibles and deposited the spider near the nest entrance (approx. 1m ). After depositing the host (see from 05sec in Video 4), the wasp probably started to search for the nest entrance. This behavior continued for 2min05sec (Video 4). When the wasp located the nest, it entered and left the nest, possibly inspecting it. In sequence, the wasp returned to the site where the paralyzed host was left, grasped it again (i.e., in the same manner as described above) and carried it directly into the nest. The nest was simple, a 16 cm tunnel angled downwards ~45° in relation to the surface, with 2 cm diameter. The nest was located on the edge of low vegetation (i.e., grass) ( Figs 13–14 ) surrounding the trail. There was no construction of a temporary closure to protect the nest during the hunting period. However, throughout the permanent closure, the wasp filled the nest with soil from the previous excavation, using the forelegs, and compacted the soil by pressing the pygidial plate against the burrow walls (Video 5). In the final step, the wasp started biting the edge of the burrow with the mandibles to remove loose soil. The wasp also manipulated the soil with its forelegs and compacted it with the pygidium. We did not find egg laying on the spider. Finally, the recorded ethological sequence can be categorized as VPTC.