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Fun Facts
Did You Know?
Adults appear in late July and August and persist through October in North Louisiana, with peak abundance in September when the maximum adult size coincides with the peak flying insect abundance of late summer. Fresh webs appear overnight and the spider at the hub positions each morning represent the complete adult-season activity of the species. By November, adults have died after producing egg sacs at sheltered positions on structures and dense vegetation
If This Animal Could Talk...
"Watch closely, respect my space, and let my habitat explain the rest of the story."
Neoscona domiciliorum, the red-femured spotted orbweaver, earns its common name from the red-orange coloration on the femur segments of the legs, the joint between the leg base and the main leg section. That red-femur mark, visible at close range on a resting spider, separates this species from the similar spotted orbweavers and barn spiders that share structure and garden web positions at North Louisiana sites from late summer through fall.
Most of the North Louisiana orb weaver community peaks in late summer, and Neoscona domiciliorum follows that pattern, with adults reaching maturity in August and September and producing the most prominent webs of the season at garden fence lines, porch structures, and open woodland edges. A medium-to-large orb weaver web at a North Louisiana structure or garden position in late summer with reddish-orange leg femurs visible on the spider at the hub belongs to this species before any other identification features need examination.
A Few More Facts
How they hunt and forage: Flying insects at the size range that a two-foot orb weaver web intercepts: flies, moths, beetles, and various other flying arthropods at structure positions. South-facing and west-facing structure positions in late afternoon and evening concentrate flying insects that the web intercepts through the post-sunset period, which may explain the species' affinity for those structure orientations. Porch and building wall positions near exterior lights extend the prey capture period into the night. Red-femured orb weavers at North Louisiana structure positions in August and September intercept the specific prey community that structure surfaces and adjacent lighting attract rather than the general flying insect community of open habitats. Structure surfaces accumulate warmth during the day that releases into the adjacent air through evening, concentrating flying insects at structure surfaces where that warmth creates favorable conditions. Exterior lighting at structures, whether porch lights, security lights, or decorative fixtures, concentrates moth and fly diversity at structure surfaces through the night.
Live birth or eggs? no
When young are born: November at most North Louisiana sites produces final egg sac records after the last adults have died, with the egg sacs persisting through winter on structure surfaces and dense vegetation before hatching the following summer cohort.Tracking first-of-year and last-of-year records across multiple seasons at consistent North Louisiana garden and structure sites builds the phenological picture that the current regional database needs for this species.
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Accessibility
Accessibility
Red-femured orb weaver webs at garden fences, porch railings, and structure positions throughout North Louisiana in late summer and fall present for observation at standing height from maintained garden paths and residential areas. The species occurs at essentially every suitable North Louisiana garden and structure site with consistent web presence from August through October. Morning observation when adults hold hub position before retreating to daytime shelter produces the most consistent observation opportunity.
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Frequently Asked Questions
Does Red-Femured Orb Weaver live in North Louisiana?
Yes. That red-femur mark, visible at close range on a resting spider, separates this species from the similar spotted orbweavers and barn spiders that share structure and garden web positions at North Louisiana sites from late summer through fall. Most of the North Louisiana orb weaver community peaks in late summer, and Neoscona domiciliorum follows that pattern, with adults reaching maturity in August and September and producing the most prominent webs of the season at garden fence lines, porch structures, and open woodland edges.
A medium-to-large orb weaver web at a North Louisiana structure or garden position in late summer with reddish-orange leg femurs visible on the spider at the hub belongs to this species before any other identification features need examination.
How do you identify Red-Femured Orb Weaver?
Adults span five-eighths to seven-eighths of an inch. The abdomen shows a complex pattern of pale and dark markings on a grayish-brown to tan background, with a characteristic spotted or folium pattern that gives the broader Neoscona group its spotted orbweaver designation. The defining identification feature: red-orange coloration on the femur segments of all four pairs of legs, creating a red-joint appearance that distinguishes the species from the barn spider, Neoscona crucifera, which shows similar abdomen patterning without the red femur coloration. The web reaches up to two feet in diameter at structure and garden positions. Adults rebuild webs regularly and often consume and rebuild the web on a daily or near-daily cycle, with fresh webs appearing in the morning at positions that showed debris-laden or absent webs the previous evening.
What does Red-Femured Orb Weaver eat?
What Red-Femured Orb Weavers Eat
Flying insects at the size range that a two-foot orb weaver web intercepts: flies, moths, beetles, and various other flying arthropods at structure positions. South-facing and west-facing structure positions in late afternoon and evening concentrate flying insects that the web intercepts through the post-sunset period, which may explain the species' affinity for those structure orientations. Porch and building wall positions near exterior lights extend the prey capture period into the night.
The Prey Community at Structure Positions
Red-femured orb weavers at North Louisiana structure positions in August and September intercept the specific prey community that structure surfaces and adjacent lighting attract rather than the general flying insect community of open habitats. Structure surfaces accumulate warmth during the day that releases into the adjacent air through evening, concentrating flying insects at structure surfaces where that warmth creates favorable conditions.
Exterior lighting at structures, whether porch lights, security lights, or decorative fixtures, concentrates moth and fly diversity at structure surfaces through the night.
A red-femured orb weaver web at a structure position with adjacent lighting intercepts both the warmth-attracted daytime insect community and the light-attracted nighttime insect community from the same web location. That dual-community access gives structure-position orb weavers prey resources that vegetation-only web positions do not combine simultaneously.
The structure position produces higher prey capture rates per unit time than equivalent vegetation positions at the same site, which explains why multiple orb weaver species converge on structure positions at North Louisiana residential sites through late summer.
Is Red-Femured Orb Weaver dangerous to people?
No. This species is not dangerous to people when it is observed without handling or disturbance
