Co-infestation with <i>Drosophila suzukii</i> and <i>Zaprionus indianus</i> (Diptera: Drosophilidae): a threat for berry crops in Morelos, Mexico

Abstract Drosophila suzukii (Matsumura) and Zaprionus indianus (Gupta) (Diptera: Drosophilidae) are invasive pests affecting berry crops in México. Z. indianus benefit from fruit damage caused by D. suzukii larvae, worsening infestations. Morelos state ranks eighth in Mexico for blackberry production, but these pests had not been previously reported in its berry crops. This study aimed to survey raspberry and blackberry crops in Morelos for coinfestations. Twelve multi-hole transparent traps baited with fermented juice were placed in raspberry and blackberry crops to capture flies. Additionally, 32 fruits per crop were collected, and emerging specimens were identified. The captured specimens were: 62.4 % D. suzukii , 2.4 % Z. indianus , 20.8 % Drosophila melanogaster (Meigen), other Diptera (12.3 %), Coleoptera (1 %), Hymenoptera (0.6 %), arachnids (0.3 %), Thysanoptera (0.1 %), and Hemiptera (0.1 %). From the collected blackberries, 23 male and 25 female D. suzukii , three Z. indianus, and 27 other drosophilids emerged. Similarly, from the raspberries, 19 male and 21 female D. suzukii, two Z. indianus and 13 other drosophilids, were recorded. This study provides the first evidence of D. suzukii and Z. indianus in berry crops in Morelos, Mexico, emphasizing the need for monitoring and management strategies.