An introduction to entomology. John Comstock, 1920. Page 331, fig. 378, no legend. Mouthparts of a booklouse

Description:

Description: English: Mouthparts of a booklouse, Liposcelis divinatoria A) Maxilla and paragnathus of right side, ventral view; m - maxilla; f - paragnathus; p - protractor muscle; r - retractor muscle B) Mandibles C) Labium, ventral view; p - palpus From "An introduction to entomology". John Comstock, 1920. Page 331, fig. 378, no legend. Note: "Troctes divinatorius" in the original. Current valid name is Liposcelis divinatoria. Date: 1920. Source: "An introduction to entomology". John Comstock, 1920. Page 331. Author: John Henry Comstock (1849 – 1931).