Caryocolum alsinella is a moth of the family Gelechiidae. It is found throughout EuropeFauna Europaea It is also present in North Africa (including Morocco).
The length of the forewings is 4–5 mm.Differs from Caryocolum proxima as follows: forewings somewhat narrower, a distinctly marked black dot in disc before costal bar, posterior fascia not angulated, forming two direct opposite spots. Larva pale yellowish; head black; 2 red-brown, plate black.Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf Keys and description Heath, J., ed. 1976 The Moths and Butterflies of Great Britain and Ireland Vol. 4 Part 2Langmaid, J. R., Palmer, S. M. & Young, M. R. [eds]. 2018 A Field Guide to the Smaller Moths of Great Britain and Ireland [3rd ed.]Reading, Berkshire. British Entomological and Natural History Societylepiforum.de includes images
Adults have been recorded on wing from late June to late September.
The larvae feed on Arenaria montana, Cerastium arvense, Cerastium diffusum, Cerastium fontanum, Cerastium semidecandrum, Minuartia verna, Moehringia and Stellaria species. Young larvae mine the leaves of their host plant.
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