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 : 442

D. kuriphilus dispersion

Current wasp distribution and dispersion pattern is shown in Fig. 1. Its meteoric expansion entails the perfect adaptation of the gall wasp to the Galician climatic conditions. In 2014 D. kuriphilus was detected in 13 out of 314 Galician councils, whereas three years later it is present in 151, almost half of the territory. The highest detection year was 2015, in which 71 new councils were affected. Dispersion data are unequal among the four Galician provinces: Ourense is the most affected (the wasp was detected in 93% of the councils) whilst Pontevedra has only 18%. Lugo and A Coruña have a condition percentage of 51 and 22% respectively. This inequality could be a consequence of the different chestnut tree planted area and density and putative arrival areas of D. kuriphilus .