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gall, in botany

(Encyclopedia)gall, abnormal growth, or hypertrophy, of plant tissue produced by chemical or mechanical (e.g., the rubbing together of two branches) irritants or hormones. Chemical irritants are released by parasit...

North Pole

(Encyclopedia)North Pole, northern end of the earth's axis, by convention at lat. 90°N. Because the earth's rotational axis wobbles slightly over time, the location where the northern end of the axis intersects th...

midge

(Encyclopedia)midge, name for any of numerous minute, fragile flies in several families. The family Chironomidae consists of about 2,000 species, most of which are widely distributed. The herbivorous larvae are fou...

mayfly

(Encyclopedia)mayfly, any insect of the order Ephemeroptera, so named because the adults live for a short time, often only a single day, during which they molt twice, mate, and lay their eggs in freshwater. The adu...

peacock

(Encyclopedia)peacock or peafowl, large bird of the genus Pavo, in the pheasant family, native to E Asia. There are two main species, the common (Pavo cristatus), and the Javanese (P. musticus) peacocks, both found...

woodcreeper

(Encyclopedia)woodcreeper or woodhewer, common names for woodpeckerlike birds of tropical forest and brush, constituting about 50 species in the family Dendrocolaptidae. Supported by their stiff tails, they cling v...

blister beetle

(Encyclopedia)blister beetle, common name for certain soft-bodied, usually black or brown, mostly elongate and cylindrical beetles belonging to the family Meloidae. Blister beetles are common insects found feeding ...

tody

(Encyclopedia)tody tōˈdē [key], common name for small (3–4 in./9–10 cm) West Indian birds of the family Todidae, comprising the single genus Todus. Bright green above with red throats, they are forest birds ...

thick-knee

(Encyclopedia)thick-knee, common name for terrestrial, Old World birds in the family Burhinidae. The name derives from the bird's thickened tarsal joints. Thick-knees are shy, solitary birds. They are rapid runners...

sawfly

(Encyclopedia)sawfly, common name for insects of several families of the order Hymenoptera, which also includes the ants, wasps, and bees. Sawflies are named for the two sawtoothed blades of the female's ovipositor...