Aphonopelma marxi
Classification
- Phylum: Arthropoda
- Subphylum: Chelicerata
- Class: Arachnida
- Order: Araneae
- Infraorder: Mygalomorphae
- Family: Theraphosidae
- Genus: Aphonopelma
- Species: marxi
Pronunciation
How to pronounce Aphonopelma marxi: //æfəˌnɒpɛlmə ˈmɑːrksaɪ//
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Summary
Aphonopelma marxi is a species of spider in the family Theraphosidae (tarantulas), known for its dark coloration and hairiness, found primarily in high-elevation areas of the Four Corners region of the United States. It is commonly found in hidden burrows, making it difficult to locate despite being
Physical Characteristics
Generally dark brown to black in color, very hairy, with some orange to red hairs on the abdomen. Mature males have a carapace length of 8.3 to 10.5 mm (0.33 to 0.41 in), and mature females have a carapace length of 13.5 to 15.3 mm (0.53 to 0.60 in).
Identification Tips
Distinguished by its dark color, overall hairy appearance, size, and habitat. In males, the ratio of the length of the femur of the first leg to the length of the metatarsus of the same leg is greater than 1.69. In females, the ratio of the length of the femur of the first leg to the length of metatarsus of the third leg is greater than 1.76.
Habitat
Found in a variety of habitats including mixed conifer forests and sagebrush steppe, primarily in areas of higher elevation.
Distribution
Widely distributed in the Four Corners region of northern Arizona, northwestern New Mexico, southwestern Colorado, and southeastern Utah.
Evolution
First described by Eugène Simon in 1891 as Eurypelma marxi. Later placed in the genus Aphonopelma by Andrew M. Smith in 1995.
Similar Taxa
Tags
- Aphonopelma marxi
- tarantula
- spider
- Four Corners
- arachnology