The Aradidae of Canada : Hemiptera: Aradidae by Ryuichi Matsuda

By Ryuichi Matsuda

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Upper surface of pronotum with transverse depression distinct; median carinae parallel-sided except at middle, where they are slightly convergent; paramedian carinae straight, slightly convergent anteriorly, and not extending beyond transverse depression; lateral carinae short. Scutellum with lateral margins straight and well carinated, ending in acute tip; basal portion of upper surface very slightly elevated and with low median carina. Hemelytra at base lobately reflected; apices of hemelytra completely covering genitalia in male, and extending beyond posterior margin of 7th segment in female.

Distribution (Map l6): This species is a truly holarctic species, common in the New World as well as in the Old. In Canada this species has been Length of collected in Quebec, Ontario, Newfoundland, Alberta, Saskatchewan, Nova Scotia, Manitoba, British Columbia, Yukon Territory, and Northwest Territories. The species is also known to occur in many states of the USA including Alaska. Associated plants: Pinus ponderosa, Pinus silvestris, Picea engelmanni, Picea excelsa, and Iunipcrus communis. Remarks: Aradus lugubris var.

231. Color: Predominantly black. 3rd antennal segment pale yellow; other antennal segments black. Posterolateral angles of connexival segments dirty yellow. Structure: Head with median process reaching basal one-fifth or onequarter of 2nd antennal segment. 9. Postocular lateral margins straight and without spine. Rostrum clearly not reaching posterior margin of prosternum. Pronotum widest at middle; anterior half of lateral margin almost straight and spinous behind eye, and posterior half feebly rounded.

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