Rodríguez Cabán, Antonio G.

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    Identificación de parasitoides de minadores agromícidos (Díptera: Agromyzidae) en plantas herbáceas en la región oeste de Puerto Rico
    (2017) Rodríguez Cabán, Antonio G.; González Rodríguez, Ángel L.; College of Agricultural Sciences; Santos Flores, Carlos J.; Gallardo Covas, Fernando; Department of Crops and Agro-Environmental Sciences; Acosta Martínez, Jaime A.
    The family Agromyzidae consists of about 2,750 worldwide, with more than 33 species in Puerto Rico. In Puerto Rico, there are no published studies about parasitoids of agromyzid leafminers; thus, the objective of this research was the identification of this particular fauna. For this study, the collection of leaf samples with serpentine or patch leafminers damage was limited to some crops and weeds in some municipalities in the west region of Puerto Rico. Leaf samples were placed paper for two weeks in Petri dishes with a filter at 25 ± 2 °C and a relative humidity of aprox. 48%. The parasitoids obtained were deposited in vials with 70% ethanol. The species found were endoparasitoids and ectoparasitoids that attack leafminers larvae and emerged from larvae or the pupae in the puparium. The majority of the specimens belong to the families Eulophidae-58.59% (Chrysocharis ignota, Chrysocharis vonones, Closterocerus pulcher, Diaulinopsis callichroma, Diglyphus insularis, Horismenus metallicus, Neochrysocharis formosa, Neochrysocharis spp., Pnigalio sp., Proacrias sp., Trisecodes agromyzae, and Zagrammosoma sp.), and Braconidae- 31.02% (Opius dissitus and O. insularis). The families Figitidae- (3.26%; Disorygma sp., Ganaspidium sp. and Tropideucoila sp.) and Pteromalidae- (2.07%; Halticoptera sp.) were found less frequently. In Phaseolus vulgaris, 53.8% of the parasitoids were braconids; in Ipomoea batatas, 53.4% were eulophids; in Allium cepa, 100% were eulophids; in Cucurbita moschata, 53.7% were braconids; and in Lycopersicum esculentum, 87.5%were eulophids. Findings show that the hymenopteran parasitoids in the families Eulophidae and Braconidae are the most common and represent an important factor of mortality in agromyzid larvae and pupae, and that the distribution of parasitoid species varies according to the host plant of the agromyzid host.