Iuridae
Thorell, 1876
Genus Guides
2- Anuroctonus(Swollenstinger Scorpions)
- Hadrurus(Giant Hairy Desert Scorpion)
The Iuridae are a of scorpions established by Thorell in 1876. The family comprises six —Anatoliurus, Calchas, Iurus, Letoiurus, Metaiurus, Neocalchas, and Protoiurus—with at least 20 described . Iuridae is distinguished from the large family Buthidae by possessing monocentric rather than holocentric chromosomes. The family is part of the order Scorpiones within the class Arachnida.
Pronunciation
How to pronounce Iuridae: /juːˈrɪdiːiː/
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Identification
Iuridae can be distinguished from Buthidae, the largest , by cytogenetic characteristics: Iuridae possess monocentric with localized , whereas Buthidae have holocentric chromosomes with diffuse centromeres. Members of the Hadrurus, historically placed in Iuridae, show morphological differences from other scorpion families in structure, with the plate not fully covering the mouthparts.
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Distribution
The has a disjunct distribution. such as Iurus and Protoiurus occur in the Mediterranean region, including parts of southern Europe and North Africa. The genus Hadrurus (now sometimes placed in separate families) occurs in arid regions of North America. Anatoliurus is found in Anatolia (Turkey).
Similar Taxa
- ButhidaeButhidae is the largest and overlaps in general with Iuridae, but differs cytogenetically in having holocentric rather than monocentric .
- CaraboctonidaeSome authorities have placed the Hadrurus in Caraboctonidae rather than Iuridae, reflecting taxonomic uncertainty and morphological similarities between these .
More Details
Chromosomal characteristics
Iuridae possess monocentric , a trait shared with nine other (Bothriuridae, Chactidae, Chaerilidae, Euscorpiidae, Liochelidae, Scorpionidae, Scorpiopidae, Urodacidae, and Vaejovidae). Only Buthidae, the largest scorpion family, has holocentric chromosomes with diffuse .
Taxonomic note on Hadrurus
The Hadrurus, containing large North American desert scorpions such as the giant desert hairy scorpion, has been variously placed in Iuridae or separated into distinct (Caraboctonidae or Hadruridae), reflecting ongoing taxonomic debate about family-level boundaries in Scorpiones.