Pseudanophthalmus nelsoni
Barr, 1965
Nelson's Cave Beetle
Pseudanophthalmus nelsoni is a small, eyeless ground beetle in the Carabidae. Described by Barr in 1965, this troglobitic inhabits cave systems in the United States. Like other members of its , it exhibits adaptations to subterranean life including reduced or absent and pale coloration. The species is named in honor of an individual associated with its discovery or study.
Pronunciation
How to pronounce Pseudanophthalmus nelsoni: /suːˌdænɒfˈθælməs ˈnɛlsənˌaɪ/
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Identification
Pseudanophthalmus nelsoni can be distinguished from other Pseudanophthalmus by subtle morphological differences in genitalic and external characters, as described in Barr's 1965 original description. The is characterized by small size, elongated body form, reduced or absent , and pale, depigmented typical of troglobitic carabids. Specific distinguishing features from require examination of and original description.
Habitat
Subterranean; inhabits cave systems. As a troglobitic , it is restricted to the dark zone of caves and is dependent on stable cave environments with high humidity and constant temperature.
Distribution
United States; North America. Specific cave localities are not detailed in available sources but are presumably in the Appalachian or Interior Low Plateau regions where the is most diverse.
Similar Taxa
- Other Pseudanophthalmus speciesThe contains numerous morphologically similar troglobitic that require detailed examination of male genitalia and other subtle characters for accurate identification. Geographic separation of cave systems often serves as the primary isolating mechanism.