JHR 60: 111–118An (2017) alternative host of Hymenoepimecis japi (Hymenoptera, Ichneumonidae)... 111 doi: 10.3897/jhr.60.14817 RESEARCH ARTICLE http://jhr.pensoft.net An alternative host of Hymenoepimecis japi (Hymenoptera, Ichneumonidae) on a novel family (Araneae, Araneidae), with notes on behavioral manipulations Yuri F. Messas1, Jober F. Sobczak2, João Vasconcellos-Neto1 1 Departamento de Biologia Animal, Instituto de Biologia, Caixa Postal: 6109, Universidade de Campinas – UNICAMP, 13083-970, Campinas, SP, Brazil 2 Instituto de Ciências Exatas e da Natureza, Universidade da Integração Internacional da Lusofonia Afrobrasileira – UNILAB, Rod. 060, Acarape, CE, Brazil Corresponding author: Yuri F. Messas (
[email protected]) Academic editor: Mark Shaw | Received 30 June 2017 | Accepted 20 September 2017 | Published 30 October 2017 http://zoobank.org/07A24004-1195-4DA3-9191-77765C1683A6 Citation: Messas YF, Sobczak JF, Vasconcellos-Neto J (2017) An alternative host of Hymenoepimecis japi (Hymenoptera, Ichneumonidae) on a novel family (Araneae, Araneidae), with notes on behavioral manipulations. Journal of Hymenoptera Research 60: 111–118. https://doi.org/10.3897/jhr.60.14817 Abstract Polysphinctine wasps of the genus Hymenoepimecis act as koinobiont ectoparasitoids of orb-weaver spi- ders. Hymenoepimecis japi is already known to parasitize the tetragnathid spider Leucauge roseosignata. Here, we record the dome-weaver spider Mecynogea biggiba as a second host for H. japi, as well as the behavioral manipulations induced by the parasitoid. We found that H. japi alters the web construction behavior of M. biggiba, resulting in a complex three-dimensional cocoon web. This modified web differs from that of L. roseosignata, which is a simpler structure composed of a few support threads.