| Optioservus | |
|---|---|
 | |
| Optioservus larva | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Suborder: | Polyphaga |
| Infraorder: | Elateriformia |
| Family: | Elmidae |
| Subfamily: | Elminae |
| Tribe: | Elmini |
| Genus: | Optioservus Sanderson, 1954 |
Optioservus was a genus of riffle beetles in the family Elmidae; as of 2021 it is a junior synonym of Heterlimnius [1] . There were about 13 described species in Optioservus. [2] [3] [4]
Elmidae, commonly known as riffle beetles, is a family of beetles in the superfamily Byrrhoidea described by John Curtis in 1830. Both adults and larvae are usually aquatic, living under rocks in fast-flowing shallow areas of streams, such as riffles, feeding on algae and biofilms. There are more than 150 genera and 1,500 described species in Elmidae. The oldest record of the group is Cretohypsilara from the Cenomanian aged Burmese amber.
Dubiraphia browni is a species in the family Elmidae, in the order Coleoptera ("beetles"). Dubiraphia browni is found in North America.
Optioservus browni is a species in the family Elmidae, in the suborder Polyphaga. The species is known generally as the "Brown's optioservus riffle beetle". It is found in North America.
Anogdus is a genus of round fungus beetles in the family Leiodidae. There are at least 16 described species in Anogdus.
Asclera is a genus of false blister beetles in the family Oedemeridae. There are about six described species in Asclera.
Cephaloon is a genus of false longhorn beetles in the family Stenotrachelidae. There are about 6 described species in Cephaloon.
Microcylloepus formicoideus, the Furnace Creek riffle beetle, is a species of riffle beetle in the family Elmidae. It is found in North America.
Microcylloepus is a genus of riffle beetles in the family Elmidae. There are about 9 described species in Microcylloepus.
Narpus angustus is a species of riffle beetle in the family Elmidae. It is found in North America.
Optioservus heteroclitus is a species of riffle beetle in the family Elmidae. It is found in North America.
Ophryastes is a genus of broad-nosed weevils in the family Curculionidae. There are at least 30 described species in Ophryastes.
Cylloepus is a genus of riffle beetles in the family Elmidae. There are about six described species in Cylloepus.
Macrelmis is a genus of riffle beetles in the family Elmidae. There are at least three described species in Macrelmis.
Stenelmis moapa, the moapa warm springs riffle beetle, is a species of riffle beetle in the family Elmidae. It is found in North America.
Microphotus is a genus of fireflies in the family Lampyridae. Microphotus are usually found in the southwestern region of the United States of America and adjoining parts of Mexico. There are seven described species in Microphotus in the United States and three more in Mexico.
Dubiraphia bivittata is a species of riffle beetle in the family Elmidae. It is found in North America.
Dubiraphia is a genus of riffle beetles in the family Elmidae. There are about 11 described species in Dubiraphia.
Heterlimnius is a genus of riffle beetles in the family Elmidae. After Optioservus and Gonielmis were synonymized with Heterlimnius in 2021, there are around 30 described species in Heterlimnius.
Optioservus ovalis is a species of riffle beetle in the family Elmidae. It is found in North America.
Promoresia is a genus of riffle beetles in the family Elmidae. There are at least two described species in Promoresia.
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