The red spider (Tetranychus yothersi McG.) on the avocado . Fic. 1.—.\vocado blossom cluster with older leaves which sustain the bloom,and developing new growth. resultant white spots become more in evidence a gradual burning andreddening of the foliage results, as if scorched by fire (PI. I, A, B).The foliage so attacked soon falls, irivin<r the tree a naked appearance(fig. 2). FOOD PLANTS AND DISTRIBUTION. This red spider was first named and described by PI A. McGregor ^from specimens on camphor {Cinnajnomum campJiora) leaves sent ^ McGregor, E. A. Four new tetranychids. In Ann. Ent. Soc.
The red spider (Tetranychus yothersi McG.) on the avocado . Fic. 1.—.\vocado blossom cluster with older leaves which sustain the bloom,and developing new growth. resultant white spots become more in evidence a gradual burning andreddening of the foliage results, as if scorched by fire (PI. I, A, B).The foliage so attacked soon falls, irivin<r the tree a naked appearance(fig. 2). FOOD PLANTS AND DISTRIBUTION. This red spider was first named and described by PI A. McGregor ^from specimens on camphor {Cinnajnomum campJiora) leaves sent ^ McGregor, E. A. Four new tetranychids. In Ann. Ent. Soc. Amer., v. 7, no. 4,p. .^55-357, 1914. LIBRARYpi? CONGRESS Bui. 1035, U. S. Dept. of Agriculture. Plate The Red Spider of the Avocado A, Avocado leaf with characteristic reddening and scorched appearance caused bythe red spider; B, Uninjured avocado leaf. THE EED SPIDER ON THE AVOCADO. him in 1914 by W. W. Yotlieis, of Orlando, Fla. The Avriter has foundit attacking both the West Indian and Guatemalan varieties ofavocados {Persea gmtisshna), being particularly injurious to themore tender West Indian types. It occasionally causes considerableinjury to the mango {Mangifera indica) and in many sections ofnorthern Florida to the cam])hor and Australian silk oak [GreviUearedspidertetrany00mozn
Size: 1418px × 1762px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1922
