Hood: of the maxilla is the galena; q.v.: in Tingitidae the elevated portion of the prothorax, often covering the head.
Hooked hairs: = gathering hairs; q.v.
Horismology: see orismology.
Horizontal: said of wings when held parallel to the horizon.
Horn: a pointed chitinous process of the head: in the plural form applied to the antennae; q.v.
Host: the individual infested by or upon which a parasite grows: also applied to the maker of a cell or other structure in which guest flies or other insects take up their abode.
Hudsonian zone: is that part of the boreal region comprising the northern part of the great transcontinental coniferous forests. In the eastern United States restricted to the cold summits of the highest mountains, from northern New England to western North Carolina: in the west it covers the higher slopes of the Rocky and Sierra-Cascade systems.
Humeral: relating to the shoulder or humerus.
Humeral angle: in Lepidoptera, that angle of the wings at the base of costa, near the point of attachment to the body: in Coleopteran, the outer anterior angle of elytra: in Orthoptera, the obtusely rounded angle formed by the deflection of the sides of the pronotum from the dorsal.
Humeral bristles: in Diptera, are situated on the humeral callus.