Castianeira longipalpa

Taxonomic Hierarchy

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Araneomorphae
  • Family: Corinnidae
  • Genus: Castianeira
  • Species: Castianeira longipalpa


Nicholas Marcellus Hentz, 1847


kass-tee-uh-NEE-ruh lon-jih-PAL-puh

Identification Traits

Disclaimer: The following table provides a quick overview of the spider's basic attributes. The physical traits are greatly generalized in order to aid in the identification and sorting of spider species using our search feature. This information is not exhaustive, and keep in mind that traits such as color, markings, and overall size and shape can vary widely within a species due to variables such as the spider's age, gender, diet, hydration level, climate, and habitat. Though experienced arachnologists and hobbyists can often classify spiders rather accurately based on their unique markings and general appearance, it's important to know that scientifically accurate spider identification relies on detailed taxonomic keys and microscopic examinations of a spider's reproductive organs.

Female iconFemale Male iconMale
Body size More information icon 7mm - 10mm 5mm - 6mm
Eye count 8
Primary Colors
Identifying Traits Fuzzy or hairy appearance, Unique pattern, Striped or banded legs, Visible spines on legs

Additional Remarks

  • Outward appearance closely resembles Castianeira variata; the two can be separated with a microscope exam of the reproductive organs (there are slight differences in pattern and coloration too, but typically only experienced arachnologists can tell the difference). The range of the two species overlaps in some places, but Castianeira longipalpa is more common and widespread.
  • Spider often mimics carpenter ants by slowly waving or “stroking”  its front pair of legs in the air as if they were antennae. It will also slowly “nod” its abdomen up and down.
  • Egg sacs look like white, flattened discs that are attached to surfaces, and they don’t typically contain very many eggs (~10).

Featured Pictures

Picture of Castianeira longipalpa - Dorsal Enlarge picture icon
Picture of Castianeira longipalpa - Egg Sacs Enlarge picture icon
Picture of Castianeira longipalpa - Dorsal,Spiderlings Enlarge picture icon
Picture of Castianeira longipalpa - Female - Dorsal Enlarge picture icon
Picture of Castianeira longipalpa - Female - Dorsal Enlarge picture icon
Picture of Castianeira longipalpa - Female - Dorsal,Egg Sacs Enlarge picture icon
Picture of Castianeira longipalpa - Male - Lateral Enlarge picture icon
Picture of Castianeira longipalpa - Male - Dorsal Enlarge picture icon
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