Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Invasive pest species of gall-inducing Cecidomyiidae (Diptera) in Japan.

Abstract

Certain pest species of gall midge (Diptera: Cecidomyiidae) have invaded Japan in recent decades. Contarinia maculipennis Felt probably came to Japan from Southeast Asia, and it is now an exceedingly problematic pest for Dendrobium orchids (Orchidaceae) in Okinawa. Molecular phylogenetic analyses have revealed that C. maculipennis is a polyphagous species infesting more than eight plant families, including Momordica charantia (Cucurbitaceae), a chief vegetable crop in Okinawa. A similar Contarinia species was found to induce leaf-fold galls on roses (Rosaceae) cultivated in greenhouses in various prefectures of Japan. A molecular phylogenetic analysis detected geographical variations in the gene sequences of this gall midge, suggesting that this Contarinia species is a native to Japan, in contrast to C. maculipennis. However, wild host(s) of this gall midge have never been found. Procontarinia mangicola (Shi) that attacks the leaves of Mangifera indica (Anacardiaceae) was found in Okinawa Prefecture in 2000, on Amami Island, Kagoshima Prefecture in 2008 and the Bonin Islands, Tokyo in 2016. In July 2015, Dasineura oxycoccana (Johnson), native to North America, was found to have infested new leaves of cultivated blueberry Vaccinium spp. in Honshu, Japan. In addition, three alien species Stenodiplosis sorghicola (Coquillett), Obolodiplosis robiniae (Halderman), and Oligotrophus betheli Felt are known to occur in Japan.