Weir, Entomologist, xiii. 1880, p. 249, plate; King, Ent. Record, vii. 1895, p. 111.
Bertkau, SB. Ver. Rheinland, xxxvi. 1879, p. 288; and Arch. Naturg. xlviii. i. 1882, p. 362.
Zool. Anz. iii. 1880, p. 186.
It is much to be regretted that, as in so many other Lepidoptera, no satisfactory agreement as to names has been attained; our British A. testudo is variously styled Limacodes testudo (by Chapman and most naturalists), Apoda limacodes (by Meyrick), or Apoda avellana (Kirby, Catalogue of Moths). The family is called either Limacodidae, Apodidae, Cochliopodidae, or Heterogeneidae.
See Chapman, Tr. ent. Soc. London, 1894, p. 345, Plate VII., for our British species; for North American forms, Dyar, Life-histories of the New York Slug-caterpillars (in progress, with numerous plates), J. New York ent. Soc. iii. etc., 1895.