Publication Date


Bulletin Number

TB 92

Document Type



The family Coreidae is best known because of the destructive habit of the squash bug, Anasa tristis, on squash, pumpkin, cucumber, and other members of the cucurbit family in the United States. The family, represented by various species, is found throughout the world. However, only 13 species are found in South Dakota. Lethierry and Severin (1894) supplied us with the earliest and most complete catalog of these bugs. They listed 1,320 species and divided them into 29 subfamilies. Van Duzee (1917), in his catalog of the Hemiptera of America north of Mexico, listed 125 species which he divided among 48 genera and five subfamilies. Two of these subfamilies Alydinae and Corizinae were elevated to family rank by Parshley (1923) and Blatchley (1926) . Torre-Bueno (1941) listed 76 species for the family Coreidae in the United States. He recognized 29 genera, 9 tribes, and 3 subfamilies in the Coreidae and used the family rank for the Alydinae and Corizinae, Schaefer (1965) recognized four subfamilies, Pseudophloeinae, Meropachydinae, Coreinae and Agriopocorinae (this latter extrazimital). Baranowski and Slater (1986), in their Coreidae of Florida, listed 120 species dispersed among 18 genera, 9 tribes and 3 subfamilies. The material examined in this work is deposited in the SDSU H.C. Severin Insect Museum and represents an accumulation of years of collecting by Dr. H.C. Severin from 1919 until his death in 1954.

The family Coreidae is characterized as follows: Antennae four-segmented, inserted above the eye; rostrum four- segmented; scutellum triangular, small to medium in size, not reaching middle of body; hemelytra composed of clavus, corium, and membrane, the membrane furnished with numerous veins frequently forked or anastomosing; tarsi three-segmented; ocelli present; metathoracis scent gland auricle distinct, short, rounded; female ovipositor plates flattened, plate like. Abdominal trichobothria present. Male parameres internal, must be dissected for study. Nymphs have doral abdominal scent gland openings between terga 4-5 and 5-6.

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Agricultural Experiment Station, South Dakota State University


Plant Science


Technical bulletin (South Dakota Agricultural Experiment Station); no. 92


Copyright © 1989 South Dakota State University