Usazoros | |
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Illustration of winged female | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Zoraptera |
Family: | Zorotypidae |
Subfamily: | Zorotypinae |
Genus: | Usazoros Kukalová-Peck & Peck, 1993 |
Species: | U. hubbardi |
Binomial name | |
Usazoros hubbardi (Caudell, 1918) | |
Synonyms | |
Zorotypus hubbardiCaudell, 1918 |
Usazoros hubbardi, commonly known as Hubbard's angel insect, [1] is a species of insect in the order Zoraptera. It is native to the tropical and subtropical New World and has expanded its range into the eastern United States, where it lives in piles of sawdust, whereas in the hotter part of its range it lives under the bark of decomposing logs. It was named after the American entomologist Henry Guernsey Hubbard, who discovered the insect in the United States. [2] It's also the largest known species of angel insects in the world.
Adults are about 3 mm (0.12 in) in length and have nine segments in their antennae, while nymphs have eight. There are winged and wingless forms in both sexes of the species. The winged forms have compound eyes and ocelli, but these are lacking in wingless forms. Like termites, the winged forms sometimes shed their wings. [3] [4]
The wings, when present, are membranous and paddle-shaped, the fore wings being larger than the hind wings. The hind legs have distinctive stiff spines on the underside of the femurs. The abdomen has eleven segments, with a pair of short cerci at the tip. Nymphs are white, gradually changing to brownish as they grow. [5] [6]
Originally a tropical and subtropical species in Central and South America, Usazoros hubbardi has expanded its range northwards into the United States. This has probably occurred through the movement of winged females, possibly overwintering in piles of sawdust. [7] Its normal habitat is under the loose bark of decomposing logs. [1]
Along with Centrozoros snyderi from southern Florida, Hubbard's angel insect is one of only two members of this order to be found in the United States, the rest of the order being largely tropical in distribution. Hubbard's angel insect has been detected in Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia and West Virginia. [5]
Hubbard's angel insects are gregarious and are usually found under bark in small groups. They feed on fungal spores and hyphae, and scavenge for dead mites, nematodes and other small invertebrates. They often groom themselves or each other, using their mouthparts to clean their own antennae, legs and hind part of the abdomen, while other individuals clean the thorax and front of the abdomen. This allogrooming may be important to help avoid the fungal attacks that kill many zorapterans. [5] On being disturbed by removal of the bark, the insects scuttle rapidly away to hide in crevices. The small pale insects may be confused with termites, but move much faster. [1]
When conditions are suitable for the insects, only wingless females are present, which breed by parthenogenesis. Batches of eggs are concealed under chewed food particles and guarded by the mother. The eggs hatch after a few weeks and the nymphs moult four or five times as they grow. Under adverse conditions, such as when the insects become overcrowded or run out of food, the females lay eggs that hatch into nymphs that develop into winged males and winged females. These fly off in due course to search for more suitable places to colonise. On arrival, they shed their wings and mate repeatedly. During courtship, the males offer the females droplets of a liquid secreted by glands on their heads. [1]
Plecoptera is an order of insects, commonly known as stoneflies. Some 3,500 species are described worldwide, with new species still being discovered. Stoneflies are found worldwide, except Antarctica. Stoneflies are believed to be one of the most primitive groups of Neoptera, with close relatives identified from the Carboniferous and Lower Permian geological periods, while true stoneflies are known from fossils only a bit younger. Their modern diversity, however, apparently is of Mesozoic origin.
Earwigs make up the insect order Dermaptera. With about 2,000 species in 12 families, they are one of the smaller insect orders. Earwigs have characteristic cerci, a pair of forceps-like pincers on their abdomen, and membranous wings folded underneath short, rarely used forewings, hence the scientific order name, "skin wings". Some groups are tiny parasites on mammals and lack the typical pincers. Earwigs are found on all continents except Antarctica.
The insect order Zoraptera, commonly known as angel insects, contains small and soft bodied insects with two forms: winged with wings sheddable as in termites, dark and with eyes (compound) and ocelli (simple); or wingless, pale and without eyes or ocelli. They have a characteristic nine-segmented beaded (moniliform) antenna. They have mouthparts adapted for chewing and are mostly found under bark, in dry wood or in leaf litter.
The Gerridae are a family of insects in the order Hemiptera, commonly known as water striders, water skeeters, water scooters, water bugs, pond skaters, water skippers, water gliders, water skimmers or puddle flies. Consistent with the classification of the Gerridae as true bugs, gerrids have mouthparts evolved for piercing and sucking, and distinguish themselves by having the unusual ability to walk on water, making them pleuston (surface-living) animals. They are anatomically built to transfer their weight to be able to run on top of the water's surface. As a result, one could likely find water striders present in any pond, river, or lake. Over 1,700 species of gerrids have been described, 10% of them being marine.
Grasshoppers are a group of insects belonging to the suborder Caelifera. They are amongst what are possibly the most ancient living groups of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago.
The order Embioptera, commonly known as webspinners or footspinners, are a small group of mostly tropical and subtropical insects, classified under the subclass Pterygota. The order has also been called Embiodea or Embiidina. More than 400 species in 11 families have been described, the oldest known fossils of the group being from the mid-Jurassic. Species are very similar in appearance, having long, flexible bodies, short legs, and only males having wings.
Eurybrachidae is a small family of planthoppers with species occurring in parts of Asia, Australia and Africa. They are remarkable for the sophistication of their automimicry.
Eurycnema goliath, commonly known as the goliath stick insect, or the regal stick insect, is a large species of stick insect in the family Phasmatidae, endemic to Australia and considered one of the largest species of stick insects in the country. The species has the Phasmid Study Group number PSG14.
Oligonicella scudderi, common name Scudder's mantis or slender prairie mantid, is a species of praying mantis native to the southern United States. It is a small brown insect; the males can fly but the females are wingless.
Psocodea is a taxonomic group of insects comprising the bark lice, book lice and parasitic lice. It was formerly considered a superorder, but is now generally considered by entomologists as an order. Despite the greatly differing appearance of parasitic lice (Phthiraptera), they are believed to have evolved from within the former order Psocoptera, which contained the bark lice and book lice, now found to be paraphyletic. They are often regarded as the most primitive of the hemipteroids. Psocodea contains around 11,000 species, divided among four suborders and more than 70 families. They range in size from 1–10 millimetres (0.04–0.4 in) in length.
Crickets are orthopteran insects which are related to bush crickets, and, more distantly, to grasshoppers. In older literature, such as Imms, "crickets" were placed at the family level, but contemporary authorities including Otte now place them in the superfamily Grylloidea. The word has been used in combination to describe more distantly related taxa in the suborder Ensifera, such as king crickets and mole crickets.
Mantises are an order (Mantodea) of insects that contains over 2,400 species in about 460 genera in 33 families. The largest family is the Mantidae ("mantids"). Mantises are distributed worldwide in temperate and tropical habitats. They have triangular heads with bulging eyes supported on flexible necks. Their elongated bodies may or may not have wings, but all Mantodea have forelegs that are greatly enlarged and adapted for catching and gripping prey; their upright posture, while remaining stationary with forearms folded, has led to the common name praying mantis.
Cinara cupressi, the cypress aphid, is a brownish soft-bodied aphid. It sucks sap from twigs of conifers, and can cause damage to the tree, ranging from discoloring of the affected twig to the death of the tree. This insect appears to have originated in the Middle East and has been increasing its range and is considered to be an invasive species in Africa and Europe. It has been included in the List of the world's 100 worst invasive species.
Archipsocus nomas is a web-spinning barklouse, a psocid in the insect family Archipsocidae. It is found in the southeast of the United States, living gregariously on trees, feeding on lichen and fungi and spinning a web that adheres to the trunk and large branches in sheets. The webs are thought to protect the barklice from predators and neither the insects nor the webs cause damage to the trees.
Pholidoptera griseoaptera, the dark bush-cricket, is a flightless species of European bush-cricket; it is the type species of its genus with no subspecies.
Spermozoros impolitus is a species of insect in the order Zoraptera.
Incisitermes minor is a species of termite in the family Kalotermitidae known commonly as the western drywood termite. It is native to western North America, including the western United States and northern Mexico. It has been found in many other parts of the United States, all the way to the East Coast. It has been reported from Toronto. It has been introduced to Hawaii. It has been noted in China and it is not uncommon in Japan. This is an economically important pest of wooden structures, including houses. In California and Arizona alone its economic impact is estimated to be about $250 million per year.
Zorotypus absonus is an extinct species of insect in the order Zoraptera that lived during the Burdigalian age of the Miocene epoch. It was described from a fossil of an alate male found in Dominican amber; the specimen is deposited in Joachim Scheven's private collection at his "Lebendige Vorwelt" museum in Hagen, Germany.
Marginitermes hubbardi, commonly known as the light western drywood termite, is a species of termite in the family Kalotermitidae. It is found in Central America and desert regions of southwestern North America.
Psilopsocus mimulus is a species of bark louse in the family Psilopsocidae. Found in Australia, it is the first known member of its order to bore into wood.