| Isometrus | |
|---|---|
 | |
| Isometrus maculatus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Scorpiones |
| Family: | Buthidae |
| Genus: | Isometrus Ehrenberg, 1828 |
| Type species | |
| Scorpio maculatus De Geer, 1778 | |
| Diversity | |
| 29 Species | |
| Synonyms | |
| |
Isometrus is a genus of scorpion belonging and being eponymous to the family Buthidae. [1] [2] Some species are currently assigned to the genus Reddyanus. [3]
The species of this genus are found in south and southeast Asia and in Oceania, with the exception of Isometrus maculatus which is pantropical.
They are medium sized buthids, where the adults have a body length of 30 to 75 mm. Pedipalps are orthobothriotaxic. Chelal trichobothrium db is located between dt and et. There are 3 to 5 pairs of lateral eyes. Tibial spurs are absent on all legs. Movable and fixed fingers of pedipalps consists with six rows of granules. [4]
All species are assigned to Reddyanus.
The Buthidae are the largest family of scorpions, containing about 100 genera and 1339 species as of 2022. A few very large genera are known, but a high number of species-poor or monotypic ones also exist. New taxa are being described at a rate of several new species per year. They have a [cosmopolitan] distribution throughout tropical and subtropical environments worldwide. Together with four other families, the Buthidae make up the superfamily Buthoidea. The family was established by Carl Ludwig Koch in 1837.
Hottentotta is a genus of scorpions of the family Buthidae. It is distributed widely across Africa, except for most of the Sahara desert. Species in the genus also occur in the Middle East, the Arabian Peninsula, southeastern Turkey, Iraq, Iran, Afghanistan, Pakistan, India, Nepal, Cape Verde Islands, and Sri Lanka (introduced).
Heterometrus, whose members are also known by the collective vernacular name giant forest scorpions, is a genus of scorpions belonging to the family Scorpionidae. It is distributed widely across tropical and subtropical southeastern Asia, including Indonesia, Brunei, Malaysia, Myanmar, Philippines, Singapore, Cambodia, Laos, Thailand, Vietnam, India, and China (Hainan). It is notable for containing some of the largest living species of scorpions.
Chaerilus is a genus of scorpions in the family Chaerilidae. They live in tropical parts of South Asia and Southeast Asia. A fossil genus Electrochaerilus is known from the Late Cretaceous (Cenomanian) aged Burmese amber.
Isometrus maculatus, commonly as the lesser brown scorpion, is a species of scorpion in the family Buthidae. Its distribution is pantropical; it is an introduced species in Hawaii.
Reddyanus basilicus is a species of scorpion in the family Buthidae.
Reddyanus besucheti is a species of scorpion in the family Buthidae endemic to Sri Lanka.
Isometrus thwaitesi is a species of scorpion in the family Buthidae endemic to Sri Lanka.
Reddyanus loebli is a species of scorpion in the family Buthidae.
Srilankametrus gravimanus is a species of scorpion belonging to the family Scorpionidae. It is native to India and Sri Lanka.
Srilankametrus indus, commonly known as the giant forest scorpion, is a species of scorpions belonging to the family Scorpionidae. It is native to India and Sri Lanka.
Scorpiops is a genus of scorpions in the family Scorpiopidae. It is distributed throughout much of Asia. The taxonomy of the group is unclear because new species and subgenera are described often, and one subgroup may represent a species complex.
Buthoscorpio is a genus of scorpions in the family Buthidae.
Lychas is a genus of scorpions belonging to the family Buthidae. It is one of the most widespread genus of the scorpions, where the species are found throughout in Africa and Seychelles, and in the Oriental region from India to Melanesia.
Isometrus kovariki is a species of scorpion in the family Buthidae. It was identified in and currently found only in a small region of Southern Karnataka, in an Acacia auriculiformis plantation, and it is closely related to Isometrus thurstoni, a species of scorpion endemic to the Western Ghats region of India.
Charmus is a genus of buthid scorpions native to India and Sri Lanka.
Reddyanus is a genus of buthid scorpions native to Oriental region from India, Sri Lanka, China: Tibet, to Melanesia. The genus was previously described as a subgenus of Isometrus.
Reddyanus ranawanai is a species of scorpion in the family Buthidae endemic to Sri Lanka.
Heterometrus serratus is a species of scorpion in the family Buthidae endemic to Sri Lanka where it is restricted to southern parts.
