Findings of new cecidomyiid galls induced by Asphondylia Segregates (Diptera: Cecidomyiidae) in Japan

Abstract

After 2006, eight sorts of gall induced by eight segregates of Asphondylia (Diptera: Cecidomyiidae) were newly found on eight plant species belonging to six families in Japan. As a result, six described species and 18 seregates of Japanese Asphondylia are now hosted by a total of 32 plant genera belonging to 25 families. Newly recorded host plants include three alien species. These findings imply the second, third and fourth examples of host range expansion to alien plants by Japanese gall midges unless they are alien Asphondylia. In general, gall-inducing cecidomyiids are mono-or oligophagous and hardly expand their host range to newly encountered plants. However, Asphondylia species may be able to expand their host range to alien plants more easily than other gall-inducing cecidomyiids, because some Asphondylia species are polyphagous, multivoltine and sometimes exhibit host alternation. Further information on their morphological features, ecological traits, distribution records and DNA sequencing data will enable species identification and clarify their life history patterns and host ranges.

Distribution Records and Host Plant Ranges of Identified and Unidentified Species of Gall-inducing Cecidomyiids (Diptera) in Fukuoka Prefecture, Japan

“…Photographs are provided only for the galls that were not shown previously in Yukawa & Masuda (1996) and other publications such as Elsayed et al (2018a), Kim et al (2014), Kodoi et al (2003), Shinji (1944), Tokuda & Yukawa (2004), Tokuda et al (2006), , Uechi et al ( , 2005aUechi et al ( , 2007Uechi et al ( , 2012Uechi et al ( , 2018, Yukawa et al (2014Yukawa et al ( , 2018, and Yukawa & Tokuda (2021). Cecidomyiid galls newly found in Japan are briefly described with photographs, and galls on newly found host plants are also referred to with photographs.…”

“…In Fukuoka Prefecture, however, no faunistic data for gallinducing cecidomyiids was gathered together for a single paper although the occurrence of various species has been recorded in respective papers (e.g. Ganaha et al 2004;Tokuda & Yukawa 2005;Tokuda et al 2002Tokuda et al , 2004bTokuda et al , 2006Tsuda 1982;Uechi & Yukawa 2006;Uechi et al , 2012Uechi et al , 2018Yukawa 1971Yukawa , 1978Yukawa et al 2014; see Table 2 for other references).…”