Nearctic walnut leafminers invade Europe: first Coptodisca lucifluella (Clemens, 1860) and now Coptodisca juglandiella (Chambers, 1874) (Lepidoptera, Heliozelidae)

Abstract

The Nearctic leafminer of black walnut Coptodisca juglandiella (Chambers, 1874) was found in Hungary and reported as new for Europe. Larvae were found in leafmines on black walnut (Juglans nigra (L.)), white walnut (J. cinerea (L.)) and Arizona walnut (J. major (Torr.)); the latter two Juglans species are new host plant records for C. juglandiella. Mines of Coptodisca lucifluella (Clemens, 1860), another Nearctic invader, were found on leaves of bitternut hickory (Carya cordiformis (Wangenh.) K.Koch) and Caucasian wingnut (Pterocarya fraxinifolia (Lam). Spach.) (a new hostplant record), in addition to common walnut (Juglans regia L.). Interestingly, C. lucifluella is thought to have performed a host plant shift after its introduction into Europe, whereas C. juglandiella apparently did not. Coptodisca juglandiella has three generations in Hungary. The autumn generations of both species produced many more mines than the spring generations. One hymenopteran parasitoid specimen was reared from C. juglandiella. Larvae, mines and adults of C. juglandiella and C. juglandiella can be easily distinguished, differences are presented and illustrated. The genitalia of C. juglandiella are described for the first time.

Інвазії Комах-Філофагів На Територію України

“…Процес проникнення нових адвентивних комахфілофагів на територію України продовжуватиметься й надалі. Зокрема в Угорщині виявлено нові для Європи види північноамериканських мінуючих молей Coptodisca lucifl uella (Clemens, 1860) та C. juglandiella (Chambers, 1874), личинки яких живляться на листках дерев з родів Juglans, Carya та Pterocarya (Takács et al, 2020). Поява цих видів на території Закарпаття -справа короткого часу.…”

"The Walnut Shield Bearer Coptodisca Lucifluella (Clemens, 1860) (Lepidoptera: Heliozelidae) – The First Record in Romania the Walnut Shield Bearer Coptodisca Lucifluella (Clemens, 1860) (Lepidoptera: Heliozelidae) – The First Record in Romania the Walnut Shield Bearer Coptodisca Lucifluella (Clemens, 1860) (Lepidoptera: Heliozelidae) – The First Record in Romania the Walnut Shield Bearer Coptodisca Lucifluella (Clemens, 1860) (Lepidoptera: Heliozelidae) – The First Record in Romania"

“…The walnut shield bearer C. lucifluella is a micro leaf miner moth in the family Heliozelidae. A number of eight indigenous species and four invasive species belonging to this family are reported to be present in the European territory until now (Van Nieukerken et al, 2018, Takács et al, 2020. C. lucifluella is one of the four invasive species, native to North America, together with Antispila oinophylla (Van Nieukerken & Wagner, 2012), C. splendoriferella (Clemens, 1860) and C. juglandiella (Chambers, 1874) (Takács et al, 2020).…”

“…In 2012, the species was signalled for the first time in Mexico in various pecan nut orchards (Ávila-Rodríguez et al, 2015) and in 2017, this is reported in Hungary (Takács et al, 2017). A more extensive survey in 263 localities dispersed throughout Hungary proves the vast spread of the species (Takács, et al, 2020). In 2019, C. lucifluella was identified in Ukraine in the proximity of the Hungarian border (Pályi et al, 2019).…”

Figures 26-33 from: van Nieukerken EJ, Wullaert S, Lee B-W, Bryner R (2021) Antispilina ludwigi Hering, 1941 (Lepidoptera, Heliozelidae) a rare but overlooked European leaf miner of Bistorta officinalis (Polygonaceae): new records, redescription, biology and conservation. Nota Lepidopterologica 44: 99-121. https://doi.org/10.3897/nl.44.63848

“…The small leafmining family Heliozelidae has recently been the subject of several papers, including papers on phylogeny and classification (van Nieukerken and Geertsema 2015;Milla et al 2017Milla et al , 2019 van Nieukerken and Eiseman 2020), records of three new invasive species in Europe (Bernardo et al 2011(Bernardo et al , 2015van Nieukerken et al 2012;Takács et al 2020) and treatments of difficult species pairs that were previously considered single species (Mutanen et al 2007;van Nieukerken et al 2018). Of the thirteen known European species, nine of which are native (van Nieukerken et al 2018;Takács et al 2020), the small Antispilina ludwigi Hering, 1941, the only one feeding on a herbaceous plant, remains relatively poorly known. Hering (1941) described the species and genus on the basis of moths reared from leafmines on Snake-root (or Common Bistort), Bistorta officinalis Delarbre (also known as Polygonum bistorta L. or Persicaria bistorta (L.) Samp.…”