Taxonomy
Order: ARANEAEInfraorder: AraneomorphaeFamily: Araneidae Species Comment: Taxonomic change from Epeira thaddeus - Hentz 1847. Patronym for Dr. Thaddeus Wm. Harris, a great friend of Hentz.
Identification
Online Description/Photos: BugGuide Google , iNaturalist , Wikipedia , GBIF Technical Description: Spiders of North America - Bradley; Spiders of the Carolinas – Gaddy; BugguideComments: Pale dorsal abdomen with a dark band around the sides. Some individuals have small, dark oval shaped spots on the abdomen. The cephalathorax and legs are orange or pale brown. The legs, particularly the hind legs, may be faintly banded. The female of this species can be confused with the white form of A. detrimentosus, but the venter markings have a yellowish blotch. Males are known to be confused with A. pegnia. A. pegnia males have a median apophysis with two apically directed teeth while A. thaddeus has three teeth of variable size.Total Length: Small, female Total body length 3.5-8.2 mm, male Total body length 3.7-5.7 mmAdult ID: identifiable by photo
Distribution in North Carolina
Comments: Essentially statewide but perhaps most common in the Piedmont. Ranges throughout the east but scattered. Males in late summer, females late summer through early winter.County Map: Clicking on a county returns the records for the species in that county.
Adult phenology: Click on graph to enlarge
Habitats and Life History
Habitats: Forest edge, ornamental shrubs and plantings, shrubs in yards. Observation Methods: Visual observation.Abundance/Frequency: InfrequentSilk / Web: Orb web.Behavior: Webs are built in shrubs and tall herbaceous growth at the edge of the woods. The conspicuous silk retreat gives this spider its common name. The silken tube has a pattern of holes that resemble latticework. Observations: This species, which is sometimes whitish on the abdomen, is nevertheless very readily recognized. I have seen some specimens larger than the delineation. Its dwelling place is really beautiful; it is placed above its web, and made of the finest white silk, shining with a satin luster; its shape is that of an inverted thimble, and it is usually placed under a leaf bent together for the purpose of affording shelter and security." Nicholas Marcellus Hentz, M.D. 1847
Status in North Carolina
Natural Heritage Program Status: Natural Heritage Program Ranks: State Protection: Comments:
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