The first record. of injury to cultivated 'plants due to the depreda Il-tionsof the larvae and adults of'Brachyrhinus 8'Ulcatus was made in '; c..:> Germany in 1834 (4, p. 201.) 3 Since that time the weevil has been ... . .; c:recorded with,)incre~ -frequency as causing injury to economic plants not only in.continental Europe, England, and Ireland, but also in the United'States, Cano,da, and Austru:lia.Riley (40),in 1871, recorded the first economic darllagein North America; A :rather extensive list of plants has.now oeenreported as be~g attacked in the field and in greenhouses. .Life-history studies of B. sulcatus under field conditions have been made in Europe (15, 51), and also in a general way in the United States.Its life history in the greenhouse: however, has received no previousdetailed.studyso fa1.".l~s available p-qblications indicate, except apreljminary report in 1927 (4) and andtber in 1930 (45) by the present author." .Infestations in tile nurserie~,",!<nd.greenhousesnear Philadelphia, Pa., offered an opportlU1ity for a study of the c;;pecies which was taken
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Floyd F. Smith (1932) studied this question.