Spinybacked Orbweaver
EntdeckenInvertebrate
Spinybacked Orbweaver
gasteracantha cancriformis
The Spinybacked Orbweaver is a fascinating and highly recognizable spider known for its distinct, crab-like appearance and colorful abdomen. Found throughout warmer regions of the Americas, this small arachnid is a welcome addition to gardens, where it acts as a natural pest controller by weaving complex, sticky webs to snare flying insects. Despite its intimidating spines, this spider is entirely harmless to humans and rarely bites unless severely provoked. Observing a Spinybacked Orbweaver in its web provides a wonderful glimpse into the intricate engineering of nature. They are particularly active during the day, making them an excellent subject for nature enthusiasts and photographers looking to spot unique wildlife. Their geometric webs are often adorned with small silk tufts, adding to their visual charm.
Lebensraum: Found in citrus groves, hardwood forests, suburban gardens, and forest edges where they spin webs between trees and shrubs.
Aussehen
This spider is easily identified by its broad, hardened abdomen featuring six prominent spines, typically red or black, projecting from the sides and rear. Females measure about 5 to 10 millimeters in length and 10 to 13 millimeters in width, showcasing vibrant colors like bright white, yellow, or orange on their upper abdominal surface, speckled with black spots. In contrast, males are significantly smaller, measuring only 2 to 3 millimeters, and are a drab gray or brown color without the prominent spines or bright coloration of their female counterparts.
ReichAnimaliaStammArthropodaKlasseArachnidaOrdnungAraneaeFamilieAraneidaeGattungGasteracantha
Kategorie
InvertebrateSeltenheit
Common
Gefahr
1/5 · Sehr gering
Snaps
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Interessante Fakten
After mating, the male often dies shortly after, and the female dies soon after producing her single, carefully wrapped egg sac.
Only the female Spinybacked Orbweaver possesses the large, colorful abdomen with prominent spines; the males are tiny, drab, and lack notable spines.
They construct a distinctive tufted web, adding small white silk dots along the support lines to make the web visible to birds so they do not fly through it.
Besondere Fähigkeiten
Fähigkeit
Aposematic Shield
The bright coloration and sharp spines on the female's abdomen serve as a physical and visual deterrent to potential predators like birds.
Fähigkeit
Web Vibration Sensing
Using highly sensitive slit sensilla, the spider detects subtle vibrations in its web to pinpoint the exact location of trapped prey.
Fähigkeit
Silk Tuft Signaling
Adds visible tufts of white silk along its web lines to prevent birds from accidentally flying through and destroying the web.
Maße und Details
- Länge
- 0-1 cm
- Gewicht
- 0.00005-0.0003 kg
- Lebenserwartung
- 0-1 Jahre
- Gelegegröße
- 100-260
- Brutzeit
- 14-35 Tage
Ernährung und Fütterung
Captures and feeds on small flying insects that become entangled in its strong, vertical orb web.
Altersunterschiede: Spiderlings consume smaller insects such as midges, while mature females target larger flies and beetles.
Hauptnahrung
- Fruit flies
- Mosquitoes
- Moths
- Beetles
Nahrungssuche
- Ambush
Ökologische Zusammenhänge
eaten by
Blue mud dauber wasp
Chalybion californicum
Wasp captures this spider to provision its mud nests for its larvae.
hunts
House fly
Musca domestica
The spider preys on house flies that fly into its sticky web.
eaten by
Carolina Chickadee
Poecile carolinensis
Preys on the spider, though it may avoid larger, spiny females.
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Sicherheit
Gefahr
1/5 · Sehr gering
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Häufig gestellte Fragen
Wie identifiziert man Spinybacked Orbweaver?
Der einfachste Weg, Spinybacked Orbweaver zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das länge von Spinybacked Orbweaver?
0-1 cm
Was ist der/die/das gewicht von Spinybacked Orbweaver?
0.00005-0.0003 kg
Was ist der/die/das lebenserwartung von Spinybacked Orbweaver?
0-1 Jahre
Was frisst Spinybacked Orbweaver?
Captures and feeds on small flying insects that become entangled in its strong, vertical orb web.
Wo findet man Spinybacked Orbweaver normalerweise?
Found in citrus groves, hardwood forests, suburban gardens, and forest edges where they spin webs between trees and shrubs.
Wie jagt Spinybacked Orbweaver?
Ambush
Was ist der/die/das gelegegröße von Spinybacked Orbweaver?
100-260
Snap-Karte
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