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Gnat from Robert Hooke's Micrographia, 1665 A female black fungus gnat. A gnat (/ ˈ n æ t /) is any of many species of tiny flying insects in the dipterid suborder Nematocera, especially those in the families Mycetophilidae, Anisopodidae and Sciaridae. [1] Most often they fly in large numbers, called clouds.
The family Phylliidae (often misspelled Phyllidae) contains the extant true leaf insects or walking leaves, which include some of the most remarkably camouflaged leaf mimics (mimesis) in the entire animal kingdom. They occur from South Asia through Southeast Asia to Australia. Earlier sources treat Phylliidae as a much larger taxon, containing ...
The disease produces small black spots on the leaves which eventually turn the leaf yellow, resulting in chlorosis and eventually cell death. [2] Spots are usually worse on older leaves. Stem lesions are dark brown to black and may cut the stem all the way around its surface. Lesions on stems enlarge and may blacken large areas near the base of ...
The average length is 16–20 millimetres (0.63–0.79 in) with males being smaller than females. They are able to fly, making a buzzing noise when airborne. Western conifer seed bugs are somewhat similar in appearance to the wheel bug Arilus cristatus and other Reduviidae (assassin bugs).
They can be generally referred to as phasmatodeans, phasmids, or ghost insects, with phasmids in the family Phylliidae called leaf insects, leaf-bugs, walking leaves, or bug leaves. The group's name is derived from the Ancient Greek φάσμα phasma , meaning an apparition or phantom , referring to their resemblance to vegetation while in fact ...
Hosta with virus X. Hosta leaves and stems are eaten by deer, rabbits, slugs and snails, and the roots and rhizomes are eaten by voles, all of these can cause extensive damage to collections in gardens. Some varieties seem more resistant to slug damage, which is more prevalent later in the growing season, than others.
This process leaves cells destroyed or collapsed, and a distinctive silvery or bronze scarring on the surfaces of the stems or leaves where the thrips have fed. [16] The mouthparts of thrips have been described as “rasping-sucking”, [ 17 ] “punching and sucking”, [ 11 ] or, simply just a specific type of “piercing-sucking” mouthparts.
A female leaf-footed bug, family Coreidae and tribe Acanthocephalini, deposits an egg before flying off. Coreidae is a large family of predominantly sap-sucking insects in the Hemipteran suborder Heteroptera. [1] The name "Coreidae" derives from the genus Coreus, which derives from the Ancient Greek κόρις (kóris) meaning bedbug. [2]