Dryocosmus kuriphilus, Yasumatsu, 1951

Pérez-Otero, R., Crespo, D. & Mansilla, J. P., 2017, Dryocosmus kuriphilus Yasumatsu, 1951 (Hymenoptera: Cynipidae) in Galicia (NW Spain): pest dispersion, associated parasitoids and first biological control attempts., Arquivos Entomolóxicos 17, pp. 439-448 : 441

D. kuriphilus phenology and indigenous parasitoids

Galician chestnut buds (sampled in winter) and galls, especially from Central Ourense and from controlled enclosures (see next sections for further explanation) were monthly analyzed and D. kuriphilus phenological stages were recorded. Sampling intensity was variable among different campaigns according to qualified staff availability. Different gall numbers were sampled from 2014 (256, 1428, 14408 and 2768 galls in 2014, 2015, 2016 and 2017 respectively; current sampling campaign is still not closed).

Larvae phenological stages were named according to VIGGIANI & NUGNES (2010). Samples were sliced and studied under magnifier and some parasites were examined right after gall emergency. The occurring parasitoids were identified and recorded as well.