Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Interactive image map to choose major taxa Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27


Species Falconina gracilis

Representative Images

Spider BG395 - Falconina gracilis - male Falconina? - Falconina gracilis unknown ugly spider - Falconina gracilis F. gracilis - side angle - Falconina gracilis - male Which spider is this? - Falconina gracilis Falconina gracilis - female Falconina gracilis - female Falconina gracilis - female

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Corinnidae (Antmimics and Ground Sac Spiders)
Genus Falconina
Species gracilis (Falconina gracilis)

Synonyms and other taxonomic changes

Explanation of Names

Author of the name: Keyserling. Year first published: 1891, as Hypsinotus gracilis.(1)

Size

Body length of adult males range from 4.6—6.4mm, and females from 5.9—8.9mm.(2)

Identification

Male:


Female:

Range

Native to Brazil, Paraguay, & northern Argentina, but introduced to the Gulf States (TX, LA, MS, AL, GA, FL, SC) and more recently to California.(2)(3)(4)

Remarks

"This South American species has been introduced to the Gulf States and seems to be associated with the imported fire ant, Solenopsis invicta in Texas (J Cokendolpher, pers. comm.)"(4)

See Also

Species of Scotinella can have a similar pattern on the abdomen.

Works Cited

1.The World Spider Catalog by Norman I. Platnick
2.Taxonomia da subfamília Corinninae (Araneae, Corinnidae) nas regiões Neotropical e Neártica
Alexandre Bragio Bonaldo. 2000. Iheringia Série Zoologia, Porto Alegre 89: 3-148.
3.A South American spider, Falconina gracilis (Keyserling 1891) (Araneae: Corinnidae), newly established in southern California
Stephen Valle, Cynthia Bingham Keiser, Leonard Vincent, & Richard Vetter. 2013. The Pan-Pacific Entomologist 89(4): 259-263.
4.Spiders of North America: An Identification Manual
D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds). 2005. American Arachnological Society.