Ascogaster quadridentata
A review of insect parasitoids associated with Lobesiabotrana (Denis & Schiffermueller, 1775) in Italy. 1. DipteraTachinidae and HymenopteraBraconidae (Lepidoptera, Tortricidae)
Scaramozzino, Pier Luigi
Loni, Augusto
Lucchi, Andrea
ZooKeys
2017
647
67
100
H89W
Wesmael, 1835
Wesmael
1835
Insecta
Braconidae
Ascogaster
CoL
Animalia
Ascogaster quadridentata
Hymenoptera
12
79
Arthropoda
species
quadridentata
Ascogasterquadridentata Luciano et al. 1988, Marchesini and Dalla Monta1992, 1994, 1998, Coscolla1997, Marchesini et al. 2006, Bagnoli and Lucchi 2006.
Italian distribution of reared parasitoids. Sardinia: Luciano et al. 1988 Tuscany: Bagnoli and Lucchi 2006 Veneto: Marchesini and Dalla Monta1992, 1994, 1998, Marchesini et al. 2006
Distribution. The species is present in Europe and North Africa; in Asia it is recorded up to Japan (for more details see: Yu 1997-2012 and Cabi 2016a). Ascogaster quadridentatawas introduced in North America and New Zealand for the biological control of Cydia pomonellaL. ( Lepidoptera, Tortricidae).
Host range. This koinobiont egg-larval endophagous parasitoid feeds on various species of economically important moths, especially belonging to the family Tortricidae. Yu et al. (2012)provide a list of sixty-seven host species. In the vineyards it has been also associated to Paralobesia viteanaand Eupoecilia ambiguella.
Ecological role. As already highlighted by Bagnoli and Lucchi (2006), in Tuscany this parasitoid is usually present at low density in all the three generations of Lobesia botrana. In Veneto it has never been obtained by larvae of the first generation, but reached a maximum rate of parasitism of 4.4% in the second generation and 2.7% in the third generation. In Sardinia it was obtained only from first generation larvae of EGVM living on Daphne gnidium, with a parasitism rate of 3.7%. Figure 3. Ascogaster quadridentataWesmael 1835. A habitus male, lateral view B head male, anterior view C head and mesosoma, dorsal view D wings, male E metasoma male, dorsal view F metasoma female lateral view.