Ascogaster quadridentata Wesmael, 1835

Scaramozzino, Pier Luigi, Loni, Augusto & Lucchi, Andrea, 2017, A review of insect parasitoids associated with Lobesiabotrana (Denis & Schiffermueller, 1775) in Italy. 1. DipteraTachinidae and HymenopteraBraconidae (Lepidoptera, Tortricidae), ZooKeys 647, pp. 67-100: 79-81

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Ascogaster quadridentata Wesmael, 1835


Ascogaster quadridentata Wesmael, 1835  Fig. 3

Ascogaster quadridentata  Luciano et al. 1988, Marchesini and Dalla Montà 1992, 1994, 1998, Coscollá 1997, 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 Montà 1992, 1994, 1998, Marchesini et al. 2006


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 quadridentata  was introduced in North America and New Zealand for the biological control of Cydia pomonella  L. ( 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 viteana  and 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%.