Stafford, E.W. 1915 Studies in diaspinine pygidia.. Annals of the Entomological Society of America 8: 67-73.
Notes: Observations on the pygidial structural characters of 6 scale insects.
Stafford, E.W. 1915 Studies in diaspinine pygidia.. Annals of the Entomological Society of America 8: 67-73.
Notes: Observations on the pygidial structural characters of 6 scale insects.