Add to ORKGeastern North America. A new species is described, bringing the total in the genus to three. Keys to larvae and adults are presented, and the distributions of the species are recorded
An atlas detailing state and provincial distributions of 663 North American Ephemeroptera species is...
A new species of lygaeid insect, Zeridonens petersoni, is described from Utah. This brings to three ...
From Academy of Natural Science of Philadelphia Journal, v. 15, March 21, 1912.Bibliographical footn...
From United States Geological and geographical survey of the territories, Bulletin v. VI.[pt. 1] Pre...
From letter of transmittal: "The work consists of a systematic study of all the members of the genus...
The tineid genus Pelecystola, which was previously represented by six widely scattered species known...
Brief summary of new species identified, including grasshopper mice, marmot, pika, Spermophile, grou...
Revision of earlier report in this series detailing changes in classification resulting from study o...
A new classification of the Geometrinae of the United States and Canada is presented, based largely ...
Preliminary to the full report in the quarto series, vol. IV, pt. I. Washington, 1877Cover dated Dec...
v. 2 has added t.-p. for Department of Interior. Report of The United States Geological Survey of th...
(Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region o...
Classification of Sonoma Casey 1886 The 43 known species of Sonoma may be arranged into four speci...
Trichopetalum lunatum Harger, 1872. NORTH AMERICA: CANADA: NOVA SCOTIA: Inverness, MacFarlane Woo...
Brief description of new species of ground squirrels, Evotomys, Marten, Molossus, prairie dog, kanga...
An atlas detailing state and provincial distributions of 663 North American Ephemeroptera species is...
A new species of lygaeid insect, Zeridonens petersoni, is described from Utah. This brings to three ...
From Academy of Natural Science of Philadelphia Journal, v. 15, March 21, 1912.Bibliographical footn...
From United States Geological and geographical survey of the territories, Bulletin v. VI.[pt. 1] Pre...
From letter of transmittal: "The work consists of a systematic study of all the members of the genus...
The tineid genus Pelecystola, which was previously represented by six widely scattered species known...
Brief summary of new species identified, including grasshopper mice, marmot, pika, Spermophile, grou...
Revision of earlier report in this series detailing changes in classification resulting from study o...
A new classification of the Geometrinae of the United States and Canada is presented, based largely ...
Preliminary to the full report in the quarto series, vol. IV, pt. I. Washington, 1877Cover dated Dec...
v. 2 has added t.-p. for Department of Interior. Report of The United States Geological Survey of th...
(Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region o...
Classification of Sonoma Casey 1886 The 43 known species of Sonoma may be arranged into four speci...
Trichopetalum lunatum Harger, 1872. NORTH AMERICA: CANADA: NOVA SCOTIA: Inverness, MacFarlane Woo...
Brief description of new species of ground squirrels, Evotomys, Marten, Molossus, prairie dog, kanga...
An atlas detailing state and provincial distributions of 663 North American Ephemeroptera species is...
A new species of lygaeid insect, Zeridonens petersoni, is described from Utah. This brings to three ...
From Academy of Natural Science of Philadelphia Journal, v. 15, March 21, 1912.Bibliographical footn...