Published in Annals of the Entomological Society of America, in 1920, in volume 13, pages 70-74

Published in Annals of the Entomological Society of America, in 1920, in volume 13, pages 271-302

Published in Ann. Ent. Soc. Am, in 1920, in volume 13, pages 305-332

Published in Ann. Ent. Soc. America, in 1920, in volume 13, pages 249-270

Published in Annals of The Entomological Society of America, in 1920, in volume 13, pages 60-69

Published in Annals of the Entomological Society of America, in 1920, in volume 13, pages 408

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 4, pages 381-390

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 4, pages 391-400

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 4, pages 409-412

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 133-137

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 137-141

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 142-151

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 156-167

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 167-173

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 174-180

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 180-189

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 193-201

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 201-216

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 2, pages 223-242

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 1-15

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 101-107

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 108-117

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 121-122

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 123-130

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 131-132

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 16-52

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 75-80

Published in Annals of the Entomological Society of America, in 1920, in volume 13, issue 1, pages 83-100