a. [f. mod.L. brunneus, = med.L. brunus, f. Teut. brûn BROWN.] Dark brown. (Chiefly in Entomology.).

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1843.  Humphreys, Brit. Moths, I. 137. The hind wings are brunneous grey.

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1847.  Proc. Berw. Nat. Club, II. No. 5. 244. Abdomen … beneath shining brunneous or ferruginous.

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  Hence (from combining form brunneo-) brunneo-piceous a., brunneo-testaceous a.

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1847.  Proc. Berw. Nat. Club, II. No. 5. 255. Elytra … brunneo-piceous. 256. Two lateral punctures … brunneo-testaceous.

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