| Stenus bifoveolatus | |
|---|---|
 | |
| Stenus bifoveolatus 3.6 mm (3.0 to 4.2 mm) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Staphylinidae |
| Subfamily: | Steninae |
| Genus: | Stenus |
| Species: | S. bifoveolatus |
| Binomial name | |
| Stenus bifoveolatus | |
Stenus bifoveolatus is a species of rove beetles native to Europe. [2] [3] [4]
Stenus is a genus of semiaquatic rove beetles in the subfamily Steninae, and one of the largest genera in the kingdom Animalia, with some 3100 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overcome the rapid escape of Collembola, the labium is protruded at high speed by hemolymph pressure, and immediately withdrawn, pulling the prey within the range of the mandibles.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.
Steninae is a subfamily of Staphylinidae.
Stenus palposus is a species of beetle of the subfamily Steninae in the family Staphylinidae. As a predatory insect, it feeds on other smaller arthropods such as springtails.
Stenusin is a piperidine alkaloid molecule synthesized by rove beetles of the genus Stenus. 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.
Stenus canaliculatus is a species of rove beetles native to Europe.
Stenus clavicornis is a species of water skater in the family of beetles known as Staphylinidae.
Stenus flavicornis is a species of water skater in the beetle family Staphylinidae. It is found in North America.
Stenus juno is a species of predatory beetle in the family Staphylinidae. It is found in Europe and North America.
Stenus angustus is a species of water skater in the beetle family Staphylinidae. It is found in North America.
Stenus colon is a species of water skater, Genus Stenus, in the beetle family Staphylinidae. It is found in the North Americas.
Stenus semicolon is a species of water skater in the beetle family Staphylinidae.
Stenus erythropus is a species of water skater in the beetle family Staphylinidae. It is found in North America.
Stenus sculptilis is a species of beetle family Staphylinidae. It is found in western North America.
Romualdius scaber, known generally as the crusted root weevil or crusted grass weevil, is a species of broad-nosed weevil in the beetle family Curculionidae. It is found in Europe and North America.
Stenus pauperculus is a species of water skater in the beetle family Staphylinidae. It is found in North America.
Stenus stygicus is a species of water skater in the beetle family Staphylinidae. It is found in North America.
Otiorhynchus carinatopunctatus is a species of broad-nosed weevil in the beetle family Curculionidae. It is native to Europe and introduced in North America.
Stenus melanarius is a species of rove beetle widely spread in Asia and Europe. It is a natural predator of the pest, Cnaphalocrocis medinalis.
Stenus solutus is a species of rove beetle widely spread in Asia and England.
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