Literature references

2 literature references:

Author: E.P. Felt
Year: 1918
Title: Key to American insect galls.
Source: Bulletin of the New York State Museum (of Natural History)
Author: B. McDaniel
Year: 1963
Title: A new scale insect from the panhandle of Texas (Eriococcidae, Coccoidea).
Source: Texas Journal of Science