Ligidium elrodii
(Packard, 1873)
Eastern Rockslater, rock slater
Ligidium elrodii is a terrestrial isopod in the Ligiidae, commonly known as the Eastern Rockslater. It is native to North America, with documented presence in both the United States and Canada. The species includes five recognized , described by Schultz in 1970 from various geographic locations. It belongs to a family of rock-dwelling woodlice adapted to moist, rocky microhabitats.
Pronunciation
How to pronounce Ligidium elrodii: //lɪˈɡɪdiəm ɛlˈrɒdi.aɪ//
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Identification
Distinguished from other North American Ligidium by geographic range and subtle morphological characters of the male pleopods; the five (chatoogaensis, elrodii, hancockensis, leensis, scottensis) are differentiated by locality and minor structural differences. As a ligiid, it has a more elongate, flattened body form compared to the rounded profile of common terrestrial isopods like Armadillidium.
Images
Habitat
Moist rocky environments, typically found under stones and in crevices of rock formations where humidity is retained.
Distribution
North America; confirmed present in United States and Canada.
Ecological Role
Contributes to decomposition of organic matter in rocky microhabitats; serves as prey for small and vertebrates in forest floor and riparian .
Similar Taxa
- Ligidium hypnorumEuropean with similar and ; distinguished by geographic separation and subtle pleopod structure differences.
- Ligidium gracileAnother North American Ligidium ; separation requires examination of male genital structures and geographic distribution.
- Ligia spp.Larger coastal relatives in Ligiidae; Ligidium elrodii is smaller and restricted to inland rocky rather than intertidal zones.