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Phoridae; new genus; new species; insect morphology; insect taxonomy; biological nomenclature; geographical distribution; Virginia; District of Columbia
insect morphology; geographical distribution; insect taxonomy; Encyrtidae; new species; new genus; North America
Abstract:
... The following species are described : -Signiphora flavopalliata occidentalis, How., from Chrysomphalus aurantü citrinus; S . thoreavini, sp. n., from Aspidiotus hederae; Neosigniphora elongate, sp. n., from a Coccid on Muhlenbergia; -Aneristus oculatipennis, sp. n., from Saissetia oleae; Nebaocharis hemipterus, gen. et sp. n. ; Epanusia albiclava, sp. n. ; Epidinocarsis subalbicornis, sp. n., asso ...
... Allygus mixtus, F., was found in numbers on a beech tree in Massachusetts in 1920 and 1921, and seemed to be increasing yearly, but in 1922 only two individuals were found, one occurring on the same tree. In England, where it is a common species, it is said to feed on oak; it has not been seen on oak in Massachusetts, but the immature stages have not been observed. There are now three species of A ...
temporal variation; overwintering; Zea mays; winter; geographical variation; host plants; corn; snow; population density; temperature; mortality; Ostrinia nubilalis; New England region
Abstract:
... In the course of several years' investigations of the European corn, borer, Pyrausta nubilalis [Ostrinia nubilalis], Hb., in the New England area to determine the importance of winter mortality as a limiting factor in the spread; of this moth, the spread has been found to be greatest along the coast of New England, where the winter temperatures are less severe, -than farther inland. Examinations o ...
Ostrinia nubilalis; boring insects; Zea mays; corn; strain differences; univoltine habit; multivoltine habit; overwintering; population density; host plants; parasitoids; biological control agents; geographical distribution; insect surveys; New York
Abstract:
... Pyrausta nubilalis [Ostrinia nubilalis], Hb., was first discovered on Long Island in 1923, when larvae of the one-generation strain were found at the extreme west. This strain spread eastward at an average rate of 4 miles a year during the following 10 years. Control measures, the comparative scarcity of hibernating quarters owing to the absence of field maize, and the fact that this form rarely a ...
... Since 1924 an inbreeding program with Poland China swine has been conducted at the University of Minnesota. As a result three highly inbred lines have been developed. In 1934 it was felt that the time was opportune to test the usefulness of the inbreds for swine production. The inbred line known as the “M” line was used in these experiments since it had shown to advantage in the Record of Performa ...
... This is an annotated list of fungi and bacteria recorded on sugar-cane throughout the world. The essential characters of each organism are given, together with its recorded geographical distribution, any synonyms found in phytopathological literature, the original citation, and the reference, where possible, to the description in Saccardo's 'Sylloge fungorum'. The more extensively studied organism ...
taxonomic revisions; animal morphology; new species; new combination; animal taxonomy; new genus; Diplopoda; Cuba; Caribbean
Abstract:
... Amphelictogon rex; SCHIZODIRA (Chytodesmidae), based on Stenonia maculata Bollman. Drawings are presented of 7 species not before illustrated. ABSTRACT AUTHORS: //. F. Loomis ...
... An auxiliary reaction chamber for use with a manometric Van Slyke apparatus is described. The apparatus enables one to determine easily the rate of liberation of amino nitrogen from insoluble proteins and thereby to determine their free amino nitrogen content. ...