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Spinybacked Orbweaver

Gasteracantha cancriformis

GasteracanthaAraneidae

beginner

Overview

A tiny, ornate, crab-shaped orb-weaver with six bright spines on a hard abdomen — completely harmless. Captive data is limited, so this is generalized orb-weaver care: a small, airy enclosure with twig anchor points for the orb it rebuilds most mornings, warm temperatures, a light daily mist, and small flying prey (fruit flies, houseflies). A short-lived annual; solitary.

Husbandry Requirements

Temperature & Humidity

Temperature

72-85°F

Humidity

60-75%

Enclosure Sizes

Adult:tall mesh cage with twig anchor points

Substrate

Type:moist substrate to hold ambient humidity; twigs/branches to anchor web
Depth:1-2 inches (web spider; rarely on the ground)

Feeding Schedule

Adult:2-3 prey per week

Prey size: flying insects, crickets

Quick Stats

Type

orb-weaver (web)

Adult Size

female 5-9 mm, male 2-3 mm

Growth Rate

fast

Native Region

Southern USA, Central and South America

Temperament

harmless, sedentary

Behavior

Webbingsmall orb web, usually rebuilt daily
BurrowingNo
Water DishOptional

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