Adult gypsy moths have hairy bodies. Females, with a wingspread of about 2 in. (5 cm), or 3.5 in. (8.9 cm) in the Asian variety, are white with dark lines on the wings; the smaller males are gray. The female covers the egg mass with body hair and scales. The larvae emerge in the spring; their blackish bodies have yellow stripes and rows of blue or red tubercles bearing tufts of hair. When full grown they are about 2 in. long. Pupation (see insect) lasts about two weeks, and the adults emerge from the cocoon in midsummer.
European gypsy moth females do not fly; dispersal occurs chiefly in the egg and larval stages as the caterpillars are blown by the wind or transported on vehicles. Females of the Asian variety and hybrids do fly. In North America the European gypsy moth has spread through the NE United States and adjacent parts of Canada, west to Wisconsin and south to North Carolina. The Asian variety has begun to damage areas of the Pacific Northwest. Gypsy moths defoliate millions of acres of trees in the United States yearly; repeated infestations weaken and kill the trees. A variety of measures have been used to check their spread, including the implementation of stringent quarantine measures and aerial application of pesticides such as Bacillus thuringiensis and diflubenzuron (Dimilin).
The gypsy moth is classified in the phylum Arthropoda, class Insecta, order Lepidoptera, family Liparidae.
Typical member of the small European and New World lepidopteran family Liparidae (formerly Lymantriidae). The large, hairy larvae of most species have hair tufts, or tussocks; many have stinging hairs. Several species, including the gypsy moth, browntail moth, satin moth, and nun moth, damage trees. The larvae feed on foliage, sometimes foraging from a silken tent or a colonial nest of webbed leaves. Larvae pupate in a cocoon attached to a tree branch or trunk. Adult females range from white to brown; some, such as the white-marked tussock moth, are wingless. Seealso moth.
Learn more about tussock moth with a free trial on Britannica.com.
Any of more than 3,500 species (family Arctiidae) of moths, many with furry or hairy larvae called woolly bears. Most adults have a thick body and white, orange, or green wings. At rest, the wings are folded rooflike over the body. The fall webworm (Hyphantria cunea) is a serious pest. The caterpillars construct webs over leaves, sometimes covering large areas with silken sheets. They pupate aboveground in a cocoon made of larval hairs and silk. The Isabella tiger moth (Isia isabella) attains a wingspan of 1.5–2 in. (37–50 mm). Black spots mark its abdomen and yellow wings.
Learn more about tiger moth with a free trial on Britannica.com.
Any moth larva of the genus Malacosoma (family Lasiocampidae). Tent caterpillars are often brightly coloured. Congregations of the eastern tent caterpillar (M. americanum) of eastern North America spin huge, tent-shaped communal nests in forked tree branches. Eggs the moth deposits on a tree in midsummer hatch in spring. The hatched caterpillars migrate to a tree crotch and construct a silken tent, which they leave each day throughout the summer to feed on the surrounding leaves. The forest tent caterpillar (M. disstria) is common in the southern U.S.
Learn more about tent caterpillar with a free trial on Britannica.com.
Any moth of the lepidopteran family Sphingidae. Found worldwide, these stout-bodied moths have long, narrow forewings and shorter hind wings, with wingspans ranging from 2 to 8 in. (5–20 cm). Many species pollinate flowers while sucking nectar; the proboscis of some species is up to 13 in. (32.5 cm) long. Some hawk moths migrate. The larvae, which are smooth and have a dorsal “horn,” are called hornworms; larvae of two North American species—the tobacco, or southern, hornworm, and the tomato, or northern, hornworm—attack tomato, tobacco, and potato crops.
Learn more about hawk moth with a free trial on Britannica.com.
![]()
Silkworm larvae (genus Bombyx) feeding on mulberry leaves.
Learn more about silkworm moth with a free trial on Britannica.com.
![]()
Polyphemus moth (Antheraea polyphemus)
Learn more about saturniid moth with a free trial on Britannica.com.
Any of the more than 20,000 moth species in the lepidopteran family Noctuidae, common worldwide. Some species have a 1-ft (30-cm) wingspan, the largest of any moth, but most species have a wingspan of 1.5 in. (4 cm) or less. The wings are usually dull-coloured. Both larvae and adults of most species feed at night. Adults feed on fruits, sap, and nectar. The larvae of many species are agricultural pests (e.g., cutworm, bollworm) that feed on foliage and seeds, bore into stems and fruits, and eat or sever roots. A few species prey on scale insects.
Learn more about miller with a free trial on Britannica.com.
(born July 21, 1934, London, Eng.) British director, writer, and actor. After earning a medical degree at Cambridge University, he made his professional stage debut at the Edinburgh Festival in the hit satirical revue Beyond the Fringe (1960). As a director of plays, he gained notoriety for his controversial interpretations of classic works. His innovative opera productions, such as Pyotr Tchaikovsky's Eugene Onegin, for the English National Opera and other groups have become internationally celebrated. He wrote the BBC medical series The Body in Question (1977) and States of Mind (1982).
Learn more about Miller, Jonathan (Wolfe) with a free trial on Britannica.com.
![]()
Henry Miller.
Learn more about Miller, Henry (Valentine) with a free trial on Britannica.com.
![]()
Arthur Miller, photograph by Inge Morath
Learn more about Miller, Arthur with a free trial on Britannica.com.
(born March 1, 1904, Clarinda, Iowa, U.S.—died Dec. 16, 1944, at sea) U.S. trombonist and leader of one of the most popular dance bands of the swing era. Miller formed his band in 1937. His music was characterized by the precise execution of arrangements that featured a clarinet doubling the saxophone melody. Broadcasts beginning in 1939 brought the band national exposure and millions of fans. Miller disbanded in 1942 to join the war effort by leading a military band. He was traveling from London to Paris by plane when the craft disappeared and was never recovered. His recordings of numbers such as “Moonlight Sonata,” “Chattanooga Choo-Choo,” “In the Mood,” and “String of Pearls” are classics of the era.
Learn more about Miller, (Alton) Glenn with a free trial on Britannica.com.
(born July 21, 1934, London, Eng.) British director, writer, and actor. After earning a medical degree at Cambridge University, he made his professional stage debut at the Edinburgh Festival in the hit satirical revue Beyond the Fringe (1960). As a director of plays, he gained notoriety for his controversial interpretations of classic works. His innovative opera productions, such as Pyotr Tchaikovsky's Eugene Onegin, for the English National Opera and other groups have become internationally celebrated. He wrote the BBC medical series The Body in Question (1977) and States of Mind (1982).
Learn more about Miller, Jonathan (Wolfe) with a free trial on Britannica.com.
![]()
Henry Miller.
Learn more about Miller, Henry (Valentine) with a free trial on Britannica.com.
![]()
Ernest Hemingway, photograph by Yousuf Karsh, 1959.
Learn more about Hemingway, Ernest (Miller) with a free trial on Britannica.com.
![]()
Ernest Hemingway, photograph by Yousuf Karsh, 1959.
Learn more about Hemingway, Ernest (Miller) with a free trial on Britannica.com.
(born May 17, 1873, Abingdon, Berkshire, Eng.—died June 17, 1957, Beckenham, Kent) English novelist. From age 17 she engaged in teaching, clerical work, and journalism. For much of her life she worked on her sequence novel Pilgrimage, comprising 13 volumes beginning with Pointed Roofs (1915). The final volume, March Moonlight, was published a decade after her death. A sensitive autobiographical account of a woman's developing consciousness, it was a pioneering work in stream-of-consciousness fiction.
Learn more about Richardson, Dorothy M(iller) with a free trial on Britannica.com.
![]()
Arthur Miller, photograph by Inge Morath
Learn more about Miller, Arthur with a free trial on Britannica.com.
Any of more than 150,000 lepidopteran species, found in all but polar habitats. Moths are chiefly nocturnal and have a stouter body, duller colouring, and proportionately smaller wings than butterflies. They have distinctive feathery antennae and, when at rest, fold their wings, wrap them around the body, or hold them extended at their sides. Wingspans range from about 4 mm (0.16 in.) to nearly 30 cm (about 1 ft). The life cycle has four stages: egg, larva (caterpillar, or worm), pupa (chrysalis), and adult (imago). Both larvae and adults of most species are plant eaters, and many seriously damage forests, agricultural crops, and fabrics. Seealso bagworm moth; gypsy moth; hawk moth; luna moth; miller; saturniid moth; silkworm moth; tiger moth; tussock moth.
Learn more about moth with a free trial on Britannica.com.
Species (Lymantria dispar) of tussock moth, a serious pest of trees. The European strain was introduced into eastern North America circa 1869. The heavy-bodied, weak-flying female is white with black zigzag markings and a wingspan of 1.5–2 in. (38–50 mm). The smaller, darker male is a stronger flier. The voracious larvae can completely defoliate deciduous trees within weeks. The larger Asian gypsy moth (wingspan of about 3.5 in., or 90 mm) is even more threatening because the female is a stronger flier, enabling it to spread quickly, and the larvae eat the leaves of both conifers and deciduous trees. It was introduced into northwestern North America in 1991. Sprayed insecticides remain the most effective means of control.
Learn more about gypsy moth with a free trial on Britannica.com.
Any insect of the moth family Psychidae, found worldwide, named for the baglike cases the larvae (see larva) carry with them. The bag, which ranges in size from 0.25 to 6 in. (6–150 mm), is constructed from silk and bits of leaves, twigs, and other debris. The strong-bodied male has broad, fringed wings with a wingspread averaging 1 in. (25 mm). The wormlike female lacks wings. Bagworm larvae often damage trees, especially evergreens.
Learn more about bagworm moth with a free trial on Britannica.com.