The grapevine leaffolder, Desmia funeralis Hübner, is considered a secondary pest, but there have been economic infestations of this lepidopteran in the United States. During March-November 2016, natural parasitism and predation of this leaffolder in commercial vineyards, Vitis vinifera L., were recorded at Parras, Coahuila, Mexico. Samples were collected using direct, drop sheet-knockdown, and sweep net collection, to obtain larvae and pupae that were kept in laboratory until adults hatched from the leaffolder or parasitoids. Parasitoids detected were Nemorilla pyste Walker 1849 (Diptera: Tachinidae), Bracon cushmani Fabricius 1805 (Hymenoptera: Braconidae) and Brachymeria ovata Say 1824 (Hymenoptera: Chalcididae). Total leaffolders parasitized were 83%, with 42.9% parasitized by N. pyste, 17.6% by B. cushmani, and 4.2% by B. ovata. Regression analysis of parasitism data indicated that there was a direct, positive relationship between D. funeralis abundance and percent parasitism. The spider Enoplognatha ovata (Clerck, 1757) was a predator on larvae and adults of D. funeralis.
How to translate text using browser tools
25 September 2020
Parasitoids and Predators of Desmia funeralis Hübner 1796 in Grape Vineyards at Parras, Coahuila, Mexico
Lizeth Almendra-Paxtian,
Oswaldo García-Martínez,
Sergio R. Sánchez-Peña,
Daniel Muñóz-Muñíz
ACCESS THE FULL ARTICLE
Southwestern Entomologist
Vol. 45 • No. 3
September 2020
Vol. 45 • No. 3
September 2020