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phylloxera

(Encyclopedia)phylloxera fĭlŏkˈsĭrə [key], small, sap-eating, greenish insect of the genus Phylloxera, closely related to the aphid. Phylloxeras feed on leaves and roots, and many species produce galls on deci...

Mexico, National Autonomous University of

(Encyclopedia)Mexico, National Autonomous University of, at Mexico City, Mexico; founded 1551 by the Spanish king Charles I (Holy Roman Emperor Charles V). It has faculties of accounting and business administration...

Thomson, Sir John Arthur

(Encyclopedia)Thomson, Sir John Arthur, 1861–1933, Scottish naturalist and writer. From 1899 to 1930 he was Regius professor of natural history at the Univ. of Aberdeen. In 1924 he lectured at Union Theological S...

chigger

(Encyclopedia)chigger, minute, six-legged, reddish larva of the harvest mite, one of various red bugs widely distributed throughout the world and common in the S United States. Attaching itself by its mouthparts to...

cabbage looper

(Encyclopedia)cabbage looper, moth larva, Trichoplusia ni, that feeds by night on the leaves of cabbage and related plants and is a serious agricultural pest. Like the inchworms (of another moth family), cabbage lo...

Hornaday, William Temple

(Encyclopedia)Hornaday, William Temple hôrˈnədā [key], 1854–1937, American naturalist, b. Plainfield, Ind. He was educated at Iowa State College (now Iowa State Univ.), continued his study of zoology and muse...

Eigenmann, Carl H.

(Encyclopedia)Eigenmann, Carl H. īˈgənmən [key], 1863–1927, American ichthyologist, b. Germany, grad. Indiana Univ., 1886. From 1891 he taught at Indiana Univ., founding and directing the biological station a...

spotted lanternfly

(Encyclopedia)spotted lanternfly, common name for a planthopper, Lycorma delicatula, an insect that is native to China, India, and Vietnam, and is an introduced agricultural pest in Korea and the United States. The...

crustacean

(Encyclopedia)CE5 Internal anatomy of a female crayfish, representative of the class Crustacea crustacean krŭstāˈshən [key], primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crusta...

Müller, Johannes Peter

(Encyclopedia)Müller, Johannes Peter mŭlˈər [key], 1801–58, German physiologist and anatomist. From 1833 until the end of his career he was professor at Berlin. He was famed as a teacher; for his extensive r...