Colorado potato beetle

(redirected from potato bug)
Also found in: Dictionary, Thesaurus, Wikipedia.
Related to potato bug: potato beetle, Roly poly bug

Colorado potato beetle:

see potato beetlepotato beetle,
name for two beetles of the leaf beetle family and for two of the blister beetle family, all destructive to the potato plant and its relatives. Most notorious is the Colorado potato beetle, or potato bug (Leptinotarsa decemlineata
..... Click the link for more information.

Colorado Potato Beetle


(Leptinotarsa decemlineata), an insect of the family Chrysomelidae, a dangerous quarantine pest of potatoes and other Solanaceae crops. The body is 9–11 mm long, oval, and yellow; each elytron has five black stripes; the wings are bright pink; the pronotum has black spots, of which the central one is V-shaped. The shiny light orange egg is oval and 2.4 mm long. The brick-red larva may reach 15 mm in length and has two black points along the sides of each segment except the first thoracic.

The Colorado potato beetle is native to North America. In Europe it first appeared in France in 1922 and subsequently spread to almost all countries. In the USSR it is distributed in Byelorussia, Latvia, Lithuania, Moldavia, the Ukraine, and the RSFSR. There are one or two generations a year. Adult beetles winter in the soil. Most surface in May and June, but some remain in diapause until spring.

The beetles eat leaves. They lay their eggs on the undersides of leaves of potato shoots, in groups of 15–20. A beetle may yield up to 3,000 eggs. Larvae in the first instar chew out the flesh of the leaf from below, and in the second instar, destroy all the flesh, leaving only the thick inner veins. The most voracious are larvae in the fourth instar, which pupate in the soil at the level of the plowed layer. In hot summer weather and in autumn before they hibernate, the beetles are capable of migrations of 40–300 km.

The Colorado potato beetle is an extremely flexible species that can survive various ecological conditions. It represents a particular threat to the USSR, because it can easily acclimatize and reproduce in all the principal regions of potato cultivation. Control measures include quarantine (plant quarantine) and treatment of plants with insecticides and insecticides mixed with micro-biological preparations when the larvae of the second in-star appear and when the beetles are hatching.


Koloradskiizhuk i mery bor’bysnim, collections 1–2. Moscow, 1955–58. Iakovlev, B. V. Koloradskii kartofel’nyi zhuk. Riga, 1960.
Ekologiia ifiziologiia diapauzy koloradskogo zhuka: Sb. Moscow, 1966.


References in periodicals archive ?
Pill bugs, earwigs, beatle grubs and potato bugs are all very good for compost piles even if they aren't good for your garden.
Though some years I've picked more potato bugs than potatoes.
Then there was the time giant potato bugs started appearing on our carpeted steps far from the outdoors.
Hill the potatoes when they are 8 inches high and squish the potato bugs or call in the chickens again.
There was no difference between them, in growth or number of potato bugs or anything else.
Plant horseradish in containers in the potato patch to keep away Colorado potato bugs and Blister beetles.
I was having a better-than-usual year with the potato bugs so l wasn't sure I could show her what they looked like.
Tom Joad befriends a pair of wisecracking potato bugs in Disney's ``The Grapes of Wrath''?
Raymond also states potato bugs don't like to venture into the mulch, so you can walk around the perimeter and pick them off.