Charles Joseph Gahan was an Irish entomologist.
The beet armyworm or small mottled willow moth is one of the best-known agricultural pest insects. It is also known as the asparagus fern caterpillar. It is native to Asia, but has been introduced worldwide and is now found almost anywhere its many host crops are grown. The voracious larvae are the main culprits. In the British Isles, where it is an introduced species and not known to breed, the adult moth is known as the small mottled willow moth.
Cymothoa exigua, or the tongue-eating louse, is a parasitic isopod of the family Cymothoidae. This parasite enters fish through the gills. The female attaches to the tongue and the male attaches on the gill arches beneath and behind the female. Females are 8–29 millimetres (0.3–1.1 in) long and 4–14 mm (0.16–0.55 in) in maximum width. Males are approximately 7.5–15 mm (0.3–0.6 in) long and 3–7 mm (0.12–0.28 in) wide. The parasite severs the blood vessels in the fish's tongue, causing the tongue to fall off. It then attaches itself to the stub of what was once its tongue and becomes the fish's new tongue.
Phoma exigua is a fungal plant pathogen. It causes wet weather blight in cotton and it can be treated with systemic copper.
Salix exigua is a species of willow native to most of North America except for the southeast and far north, occurring from Alaska east to New Brunswick, and south to northern Mexico. It is considered a threatened species in the eastern United States in Connecticut, Maryland, and Massachusetts.
Orthomecyna is a genus of moths of the family Crambidae. All species are endemic to Hawaii.
Iflaviridae is a family of positive sense RNA viruses insect-infecting viruses. Some of the insects commonly infected by iflaviruses include aphids, leafhoppers, flies, bees, ants, silkworms and wasps. The name "Ifla" is derived from the name "Infectious flacherie virus", for the type species. There is only one genus (Iflavirus) and 14 species in this family, including the type species Infectious flacherie virus.
Madia exigua is a species of flowering plant in the aster family known by the common names small tarweed and threadstem madia.
Stephanomeria exigua, the small wirelettuce, is a perennial or biennial plant native to the western United States. It is thought to be the parent species of Stephanomeria malheurensis, an endangered plant species found only in southern Oregon. It generally blooms from mid-spring to late summer and produces small, light pink or light purple blooms.
Geodia exigua is a species of sponges that produces the sesquiterpene spiro compound exiguamide. The species was first described by Johannes Thiele in 1898. It is a marine organism known from Japan.
Ropica is a genus of beetles in the family Cerambycidae, containing the following species:
Ropica ceylonica is a species of beetle in the family Cerambycidae. It was described by Breuning in 1939.
Ropica fuscovariegata is a species of beetle in the family Cerambycidae. It was described by Breuning in 1939.
Ropica marmorata is a species of beetle in the family Cerambycidae. It was described by Breuning in 1939. It contains the subspecies Ropica marmorata marmorata and Ropica marmorata sarawakiana.
Ropica nigroscutellata is a species of beetle in the family Cerambycidae. It was described by Breuning in 1939.
Ropica pseudosignata is a species of beetle in the family Cerambycidae. It was described by Breuning in 1939.
Ropica biroi is a species of beetle in the family Cerambycidae. It was described by Breuning in 1953.
Ropica sechellarum is a species of beetle in the family Cerambycidae. It was described by Breuning in 1957. It contains the subspecies Ropica sechellarum interruptefasciata and Ropica sechellarum sechellarum.
Ropica ignobilis is a species of beetle in the family Cerambycidae. It was described by Newman in 1842.
Ropica formosana is a species of beetle in the family Cerambycidae. It was described by Bates in 1866. It contains four subspecies, Ropica formosana formosana, Ropica formosana japonica, Ropica formosana nobuoi, and Ropica formosana tokaraensis.
