Micrathena gracilis
(Spined Micrathena)

Featured spider picture The spider species Micrathena gracilis, commonly known as Spined Micrathena, belongs to the genus Micrathena, in the family Araneidae. Micrathena gracilis spiders have been sighted 29 times by contributing members. Based on collected data, the geographic range for Micrathena gracilis includes 2 countries and 11 states in the United States. Micrathena gracilis is most often sighted outdoors, and during the month of August.

Taxonomic Hierarchy

Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Suborder: Araneomorphae
Family: Araneidae
Genus: Micrathena
Species: Micrathena gracilis

Common Name (AAS)

Spined Micrathena

Author

(Walckenaer, 1842)

Primary Colors

Sightings Overview

There have been 29 confirmed sightings of Micrathena gracilis (Spined Micrathena), with the most recent sighting submitted on August 17, 2025 by Spider ID member piperolgastar. The detailed statistics below may not utilize the complete dataset of 29 sightings because of certain Micrathena gracilis sightings reporting incomplete data.

Web: 86% of the time, Micrathena gracilis spiders are sighted in a spider web (Sample size: 29)
Sex: 4 female and 1 male.
Environment: Micrathena gracilis has been sighted 36 times outdoors, and 2 times indoors.
Outdoors: Man-made structure (11). Low foliage (6). High foliage (11). Forest (8).

Location and Range

Micrathena gracilis (Spined Micrathena) has been sighted in the following countries: Canada, United States.

Micrathena gracilis has also been sighted in the following states: Alabama, Indiana, Massachusetts, Michigan, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Virginia.