| Stenus solutus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Staphylinidae |
| Genus: | Stenus |
| Species: | S. solutus |
| Binomial name | |
| Stenus solutus Erichson, 1840 | |
Stenus solutus is a species of rove beetle widely spread in Asia and England. [1] [2] [3]
It is very similar to Stenus cicindeloides. [4] Male is about 6.5 mm and female is about 5.0 mm in length. Antennae base is yellowish with darkened from 5th segment. Head, thorax and elytra are entirely punctate. Basal segments of abdomen are rugose basally, where the apical segments are finely punctate throughout. Legs are darkened where the 4th tarsal segment is strongly bilobed. [5] [6]
Adults are usually found from May through to November. They inhabit on wet mud and among dense riverside vegetation. [5]
In the pygidial gland secretions of the species, the piperidine alkaloids called cicindeloine is found as a main compound. [7] Also (E)-3-(2-methyl-1-butenyl)pyridine and traces of stenusine can be found as defensive alkaloids against predation and microorganismic infestation. [8] [9] [10]
Beetles are insects that form the order Coleoptera, in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal species; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops.
The rove beetles are a family (Staphylinidae) of beetles, primarily distinguished by their short elytra that typically leave more than half of their abdominal segments exposed. With over 66,000 species in thousands of genera, the group is the largest family in the beetle order, and one of the largest families of organisms. It is an ancient group, with fossilized rove beetles known from the Triassic, 200 million years ago, and possibly even earlier if the genus Leehermania proves to be a member of this family. They are an ecologically and morphologically diverse group of beetles, and commonly encountered in terrestrial ecosystems.
The Adephaga are a suborder of beetles, and with more than 40,000 recorded species in 10 families, the second-largest of the four beetle suborders. Members of this suborder are collectively known as adephagans. The largest family is Carabidae which comprises most of the suborder with over 40,000 species. Adephaga also includes a variety of aquatic beetles, such as predaceous diving beetles and whirligig beetles.
The Chrysomeloidea are an enormous superfamily of beetles, with tens of thousands of species. The largest families are Cerambycidae, long-horned beetles, with more than 35,000 species, and Chrysomelidae, leaf beetles, with more than 13,000 species.
Actinidine is an iridoid produced in nature by a wide variety of plants and animals. It was the first cyclopentanoid monoterpene alkaloid to be discovered. It is one of several compounds that may be extracted from the valerian root and silver vine, as well as several types of insects in the larval and imaginal stages. Actinidine is a cat attractant, with effects like those of nepetalactone, the active compound found in catnip.
Ant nest beetles or paussines, some members of which are known also as flanged bombardier beetles, are a large subfamily within the ground beetles (Carabidae).The tribes Metriini, Ozaenini, Paussini and Protopaussini are included in the subfamily.
Stenus is a genus of semiaquatic rove beetles in the subfamily Steninae, and one of the largest genera in the kingdom Animalia, with some 2700 known species worldwide. They are predators of Collembola and other small arthropods. Adults have a protrusible labium with a sticky tip used in prey capture. To overcome the rapid escape of Collembola, the labium is protruded at high speed by hemolymph pressure, and immediately withdrawn, pulling the prey within the range of the mandibles. However, the labium tip does not easily stick to prey covered in scales or setae or that have a large body size. Stenus comma is more likely to catch such prey by lunging forward and grabbing them directly with its mandibles rather than using its labium. Stenus species are also known for "skimming" on the water surface using their pygidial gland secretions that act as a surfactant and rapidly propel the beetle fast forward, a phenomenon known as the Marangoni effect. Stenus comma has been seen to achieve a velocity of 0.75 m/s, and to cover a distance of up to 15 m if the secretion is continuous.
Stenusin is a piperidine alkaloid molecule synthesized by rove beetles of the genus Stenus Latreille. By lowering its abdomen and releasing stenusin, this genus of rove beetle are able to quickly escape predators through a process called skimming. Skimming is caused by the low surface tension of stenusin, which rapidly spreads over water surfaces when emitted and allows the beetle to glide away from danger.
Hycleus pustulatus is a species of blister beetle found in India, Sri Lanka, China and Java.
Bledius annularis, or ringed borrow rove beetle, is a species of spiny-legged rove beetle in the family Staphylinidae. It is found in North America.
2015 in paleoentomology is a list of new fossil insect taxa that were described during the year 2016, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
Phytophaga is a clade of beetles within the infraorder Cucujiformia consisting of the superfamilies Chrysomeloidea and Curculionoidea that are distinctive in the plant-feeding habit combined with the tarsi being pseudotetramerous or cryptopentamerous, where the fourth tarsal segment is typically greatly reduced or hidden by the third tarsal segment. The Cucujoidea are a sister to the Phytophaga. In some older literature the term Phytophaga was applied only to the Chrysomeloidea.
Burmese amber is fossil resin dating to the early Late Cretaceous Cenomanian age recovered from deposits in the Hukawng Valley of northern Myanmar. It is known for being one of the most diverse Cretaceous age amber paleobiotas, containing rich arthropod fossils, along with uncommon vertebrate fossils and even rare marine inclusions. A mostly complete list of all taxa described up until 2018 can be found in Ross 2018; its supplement Ross 2019b covers most of 2019.
Oxytelus bengalensis is a species of rove beetle widely spread in Asia. It is found in China, Hong Kong, South Korea, Japan, Vietnam, Laos, Myanmar, Thailand, Malaysia, Singapore, Bangladesh, Sri Lanka, Nepal, Pakistan and India.
Oxytelus migrator is a species of rove beetle widely spread in Asia and Europe. It is found in China, Hong Kong, Japan, Vietnam, Thailand, Malaysia, Indonesia, and Sri Lanka.
Oxytelus varipennis is a species of rove beetle widely spread in Asia and Europe. It is found in China, Hong Kong, South Korea, Japan, Myanmar, Indonesia, Pakistan, India, Sri Lanka, Nepal, Bangladesh, and Egypt.
Oxytelus incisus is a species of rove beetle with cosmopolitan distribution across the continents.
Oxytelus nigriceps is a species of rove beetle widely spread in Asia. It is found in China, Hong Kong, South Korea, Japan, Philippines, Vietnam, Thailand, Myanmar, Malaysia, Singapore, Indonesia, New Guinea, Bismarck Islands, Pakistan, India, Nepal, Sri Lanka, and Bangladesh.
Oxytelus puncticeps is a species of rove beetle widely spread in Asia and Africa. It is found in China, Hong Kong, Taiwan, Japan, Philippines, Vietnam, Indonesia, Borneo, Sri Lanka, India, and Sub-Saharan Africa.
Stenus melanarius is a species of rove beetle widely spread in Asia and Europe. It is a natural predator of the pest, Cnaphalocrocis medinalis.
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