Bionomics of Tetyra bipunctata (Hemiptera: Pentatomidae: Scutellerinae) as Associated with Pinus banksiana in Wisconsin1

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Abstract
Tetyra bipunctata (Herrich-Schaeffer) was discovered in Wisconsin in 1962, when adults, eggs, and developing young were collected from Pinus resinosa Aiton. Later, this insect was found also on P. Banksiana Lambert. In laboratory cultures, first-instar nymphs did no feeding; nymphs in the second and third instars fed primarily on female cones of P. Banksiana, presumably on the developing seeds; and older nymphs and adults fed on either female cones or twigs. Newly molted specimens of the several instars were repeatedly seen to dislodge the exuviae from their places of attachment on the host trees, allowing the exuviae to fall to the ground. About 7 days were spent in each of the first 4 stadia, but the fifth required almost 12 days. There was 1 generation annually, with adults overwintering under needles and other ground debris.

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