- ↑ 1.0 1.1 Swain (1919) A synopsis of the Aphididae of California, University of California Publications in Entomology 3:221 pp.
- ↑ 2.0 2.1 Knowlton (1930) Notes on Utah Lachnea (Aphididae), Canadian Entomologist 62:152-161
- ↑ Remaudière, G. & M. Remaudière (1997) , Catalogue of the World’s Aphididae, INRA, Paris 473 pp
- ↑ Knowlton & C.F. Smith (1936) Notes on intermountain aphids, Entomological News 47:210-213
- ↑ Gillette & Palmer (1931) The Aphidae of Colorado. Part 1, Annals of the Entomological Society of America 24:827-934
- ↑ Knowlton & C.F. Smith (1936) Aphid studies, Festschrift zum 60 Gebursttage von Professor Dr. Embrik Strand 1:487-492
- ↑ Voegtlin & Bridges (1988) Catalog of the Cinara species of North America (Homoptera: Aphididae), Illinois Natural History Survey Special Publication 8:55 pp
- ↑ Hottes (1961) A review and key of North American Cinara (Homoptera: Aphididae) occurring on Picea, Great Basin Naturalist 21:35-50
- ↑ Knowlton & C.F. Smith (1938) Notes on western conifer aphids (Homoptera: Aphididae), Entomological News 49:65-69
- ↑ 10.0 10.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ AphidSF: Aphid Species File. Favret C., 14 Abril 2010
