Dactylispa masonii Gestro, 1923

Kato, Makoto & Imada, Yume, 2025, Diversity and host plant utilization of leaf-mining beetles of Chrysomeloidea (Coleoptera) in Japan, ZooKeys 1238, pp. 209-268 : 209-268

Dactylispa masonii Gestro, 1923

Fig. 17 E – N

Host plant.

Asteraceae : Ainsliaea acerifolia Sch. Bip. , Aster yomena (Kitam.) , Cacalia auriculata DC. var. kamtschatica (Kitam.) , Cirsium ashiuense S. Yokoy. et T. Shimizu , C. confertissimum Nakai , C. inundatum Makino , C. kiotoense , C. longepedunculatum Kitam. , C. microspicatum Nakai , C. okamotoi Kitam. , C. olygophyllum (Franch. et Sav.) , C. sieboldii Miq. , C. suzukaense Kitam. , C. tashiroi Kitam. var. hidaense (Kitam.) , C. tonense Nakai , Ligularia fischeri (Ledeb.) , L. hodgsonii Hook. , Parasenecio hastatus (L.) ssp. orientalis (Kitam.) , P. farfarifolius (Siebold et Zucc.) var. bulbiferus (Maxim.) , Petasites japonicus , Syneilesis palmata (Thunb.) .

Leaf mine.

Dark upper-layer aggregate blotch mine on mature leaf (Fig. 17 G – I, L – N ). Frass is granular, deposited along meandering larval trajectory. Often several larvae aggregately mine in a leaf, and the mined area is large and turns blackish. The fully grown larvae pupate together in the mine.

Material examined.

• 20 adults, Kawazu , Kamo-gun, Shizuoka Pref., 7-VI-2015 (as larva on Syneilesis palmata ), emerged on 15–20-VI-2015 (Fig. 17 E – H ) ; • 2 adults, Aikappu , Akkeshi, Hokkaidô, 4-VIII-2023 (as larva on Parasenecio hastatus ssp. orientalis ), emerged on 19-VIII-2023 (Fig. 17 I ) ; • 4 adults, Hotokegaura , Sai-mura, Shimokita, Aomori Pref., 27-VII-2009 (as larva on Parasenecio farfarifolius var. bulbiferus ), emerged on 24–28-VIII-2009 ; 1 adult, Renge-onsen , Itoigawa, Niigata Pref., 4-IX-1999 (as larva on Ainsliaea acerifolia ), emerged on 15-IX-1999 ; • 2 adults, Suehiro , Akkeshi, Hokkaidô, 4-VIII-2023 (as larva on Ligularia hodgsonii ), emerged on 19-VIII-2023 (Fig. 17 N ) ; • 5 adults, Hiruzen , Maniwa, Okayama Pref., 30-VII-2018 (as larva on Ligularia fischeri ), emerged on 2–30-VII-2018 ; • 1 adult, Ashiu , Nantan, Kyoto Pref., 7-VIII-1991 (as larva on Cirsium ashiuense ), emerged on 20-VIII-1991 ; 8 adults, Daigonji-kôgen , Matsunoyama, Tôkamachi, Niigata Pref., 19-VIII-2008 (as larva on Cirsium inundatum ), emerged on 21–29-VIII-2008 ; • 5 adults, Aburazaka , Ôno, Fukui Pref., 6-IX-2019 (as larva on Cirsium tashiroi var. hidaense ), emerged on 4–7-X-2019 ; • 5 adults, Koigakubo , Tessai, Niimi, Okayama Pref., 9-X-2017 (as larva on Cirsium tashiroi var. hidaense ), emerged on 17-X-2017 ; • 5 adults, Niken-chaya , Shizuichi, Sakyô, Kyoto Pref., 10-VI-2015 (as larva on Cirsium kiotoense ), emerged on 30-VI-2015 ; 1 adult, Mt. Hakusan , Shiramine, Hakusan, Ishikawa Pref., 27-VII-1998 (as larva on Cirsium matsumurae ), emerged on 20-VIII-1998 ; • 1 adult, Kaida-kôgen , Kiso, Nagano Pref., 7-VIII-2016 (as larva on Cirsium oligophyllum ), emerged on 30-VIII-2016 ; • 1 adult, Toyohara , Nasu, Tochigi Pref., 30-VII-2018 (as larva on Cirsium makinoi ), emerged on 3–20-VIII-2018 ; • 2 adults, Doai , Minakami, Tone-gun, Gunma Pref., 30-VII-2018 (as larva on Cirsium microspicatum ), emerged on 3–20-VIII-2018 ; • 16 adults, Bibi , Chitose, Hokkaidô, 30-VI-2023 (as larva on Petasites japonicus ), emerged on 24–26-VII-2023 ; 20 adults, Beppo , Nemuro, Hokkaidô, 23-VII-2018 (as larva on Petasites japonicus ), emerged on 2–27-VIII-2018 ; • 6 adults, Kisofukushima , Kio Nagano Pref., 19-VII-1999 (as larva on Petasites japonicus ), emerged on 2–11-VIII-1999 ;

Figures

Figure 17. Habitus of adults and leaf mines of three Dactylispa species A – D D. subquadrata E – N D. masonii O – X D. angulosa. Host plants A, B Quercus serrata at Yashiro, Hyôgo Pref. C, D Quercus dentata at Nasu, Tochigi Pref. E – H Syneilesis palmata at Kawazu, Izu, Shizuoka Pref. N – S Parasenecio hastatus subsp. orientalis at Aikappu, Akkeshi, Hokkaido J – M Cirsium suzukaense at Mt. Ibuki, Shiga Pref. N Ligularia hodgsonii at Aikappu, Akkeshi, Hokkaido O – R Salvia ranzaniana at Sabushi-gawa, Niimi, Okayama Pref. S – U Salvia nipponica at Nasu, Tochigi Pref. V Clinopodium micranthum at Nagawado, Nagano Pref. W – X Lithospermum zollingeri at Taishaku-kyô, Okayama Pref.