. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. l.— Chrotogonus trachypterus. An Indian pest of alfalfa.(Maxwell-Lefroy.). Fig. 2.—Brachytrypes achatinus. An Indian pest of alfalfa.(Maxwell-Lefroy.) Hosts: Alfalfa, Grami-naceae. Injury: Defoliates. Biology: The larvse feed onthe foliage and spin silkencocoons. Distribution: Europe, andhas been recently collectedin the United States. B. OTHER IMPORTANTALFALFA PESTS. COLLEMBOLA. Sinynthiiridae. Smynthurus sp., a springtail, isvery injurious to alfalfa Ln NewSouth Wales, when abundantskeleto
. A manual of dangerous insects likely to be introduced in the United States through importations. Fig. l.— Chrotogonus trachypterus. An Indian pest of alfalfa.(Maxwell-Lefroy.). Fig. 2.—Brachytrypes achatinus. An Indian pest of alfalfa.(Maxwell-Lefroy.) Hosts: Alfalfa, Grami-naceae. Injury: Defoliates. Biology: The larvse feed onthe foliage and spin silkencocoons. Distribution: Europe, andhas been recently collectedin the United States. B. OTHER IMPORTANTALFALFA PESTS. COLLEMBOLA. Sinynthiiridae. Smynthurus sp., a springtail, isvery injurious to alfalfa Ln NewSouth Wales, when abundantskeletonizing the fields in moistseasons. (A. Mollneux, Agric. Gaz. N. , Nov., 1896, pp. 807-809.) ORTHOPTERA. Acridiidse. Chrotogonus trachypterus Blan-chard, a destructive grasshop-per of India. (See text fig. 1.) Gryllidae. Brachytrypes achatinus Stoll., a brown cricket of India. (See text fig. 2.) Prodenia litura Fabricius, also known as the Egyptian cotton worm, attacks alfalfa in nigrisigna Walker, attacks fruit In ^CMoridea obsoleta Hubner, the cotton bollworm; :^AgTOtis ypsilon Rott., the greasy cutworm; and^Laphygma eii
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