Distribution Records
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Vetting Levels |
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Adult phenology:
High Mountains (HM) ≥ 4,000 ft.
Low Mountains (LM) < 4,000 ft.
Piedmont (Pd)
Coastal Plain (CP)
Click on graph to enlarge
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| synonym | |
| taxonomic_comments |
"...molecular phylogenetic data for Spintharus was published only recently by Dziki et al. (2015), based on specimens freshly sampled throughout the Caribbean and on neighbouring continents. These data strongly rejected Levi’s ‘widespread species’ hypothesis and instead suggested that Levi’s ‘Spintharus flavidus’ hypothesis contains multiple short-range endemics both on the Caribbean islands as well as on the surrounding continents. Dziki et al. concluded that at least 16 new species were present in their samples, all of which occur only in one or a few nearby localities, and all are restricted to single
islands or a small mainland area. Given these findings and limited mainland sampling, a thorough survey of the genus throughout the Americas will probably yield numerous additional species. Hence, a revision of the genus is not timely." Agnarsson et al., 2018.
Agnarsson, I., Van Patten, C., Sargeant, L., Chomitz, B., Dziki, A. & Binford, G. J. (2018). A radiation of the ornate Caribbean ‘smiley-faced spiders’, with descriptions of 15 new species (Araneae: Theridiidae, Spintharus). Zoological Journal of the Linnean Society 182(4): 758-790.
Dziki A, Binford GJ, Coddington JA, Agnarsson I. 2015. Spintharus flavidus in the Caribbean-a 30 million year biogeographical history and radiation of a ‘widespread species’. Peerj 3: e1422 https://doi.org/10.7717/peerj.1422.
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| total_length |
Female 4.0-4.5mm, Male 2.8mm |
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| silk_web |
Spintharus are typically found in leaf litter or the undersides of leaves in low vegetation where they construct small and difficult to observe webs. These webs are simplified ‘H-webs’ (Levi, 1963a;
Agnarsson, 2004) where the spider is in the middle facing down towards the gluey droplets at the base
of the web. Agnarsson et al., 2018. From there, Spintharus monitors a pair of lines, and awaits potential prey's blundering into and becoming trapped by them.
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| adult_id | 1 identifiable by photo 2 identifiable by photo of specific features and/or supplementary info 3 identifiable from specimen only |
| abundance |
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| distribution_comments |
Massachusetts south to Florida; west to Ohio and Texas. |
checklist_mt_high
>=4,000 ft. | |
checklist_mt_low
<4,000 ft. | |
checklist_pd
Piedmont | |
checklist_cp
Coastal Plain | |
| habitat |
forest understory, bushes at edges of woods. |
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Photo Gallery for Spintharus flavidus a cobweb spider |
 | Recorded by: Brian Bockhahn
Rockingham Co.
Comment: |  | Recorded by: Mark Basinger
Mitchell Co.
Comment: 2 female, 1 male |
 | Recorded by: Mark Basinger
McDowell Co.
Comment: Sweep net |  | Recorded by: Mark Basinger
Mitchell Co.
Comment: |
 | Recorded by: Brian Bockhahn
Henderson Co.
Comment: |  | Recorded by: Brian Bockhahn
Macon Co.
Comment: |
 | Recorded by: Brian Bockhahn
Macon Co.
Comment: |  | Recorded by: Mark Basinger
Sampson Co.
Comment: |
 | Recorded by: Mark Basinger
Sampson Co.
Comment: |  | Recorded by: Brian Bockhahn
Buncombe Co.
Comment: |
 | Recorded by: K. Bischof
Transylvania Co.
Comment: GORG - Obs. VC. Female. |  | Recorded by: Brian Bockhahn
Durham Co.
Comment: |
 | Recorded by: Brian Bockhahn
Surry Co.
Comment: |  | Recorded by: Brian Bockhahn
Surry Co.
Comment: |
 | Recorded by: Brian Bockhahn
Surry Co.
Comment: |  | Recorded by: Brian Bockhahn
Surry Co.
Comment: |
 | Recorded by: Brian Bockhahn
Warren Co.
Comment: |  | Recorded by: FKW
Gates Co.
Comment: MEMI - Chowanoc |
 | Recorded by: FKW, SBW
Gates Co.
Comment: MEMI - Morris burn unit. |
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