Note 13 — Chapter X
Reading edition
As to the interrelations of these three forms, Tower states (1906, p. 18) that angustovittata, which he reared from undecimlineata, is intermediate between it and signaticollis. Compare Stål, "Monogr. des Chrysomélides," 1862, p. 163; and Jacoby, Biol. Centr. Amer. Celeopt., vi, Pt. 1, p. 234, Pl. xiii, fig. 20; Tab. 41, fig. 15; ibid., Suppl., p. 253. All these forms are evidently very closely related, and the delimitation of species is quite arbitrary. Jacoby indeed suggests that undecimlineata may be a variety of decemlineata.