Arachnids of North Carolina
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Antrodiaetus microunicolor - a foldingdoor spider     Antrodiaetidae Members: NC Records BugGuide Account Public View
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Female in burrow entrance
Female ventral
Females in burrow entrance
Female dorsal
Defensive posture
Distribution Records
PDF

Vetting Levels
Adult phenology:
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

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synonym
taxonomic_comments Greek antrodiaitos - "living in caves", from antron - "cave" + diaita - "way of life, dwelling"
species_comment Smaller and occur later in fall than A. unicolor
id_comments Male and female are both smaller than A. unicolor and occur later in fall. Female has lighter coloration: dorsal shield of prosoma, legs, and tergite usually yellowish-brown (A. unicolor dark chocolate brown); and convergent median dorsal setae just posterior to pedicel thin, sometimes somewhat thickened, and tapered. Male the absence of macrosetae on the ventral, distal surface of metatarsus I (A. unicolor has at least one macroseta usually present)
total_length Female carapace length less than 7mm, male carapace length less than 4.5 mm
structural_features
silk_web Burrow
fld_guide_descriptions
online_photos
prey
predators
behavior These spiders build cryptic, silk-lined subterranean burrows that are concealed by a collapsible turret or collar during daylight hours. After dusk, spiders prop open the collar and wait at the burrow entrance to seize passing insects and other prey items.
distribution_reference
technical_reference https://www.mapress.com/zootaxa/2005f/zt00872.pdf
adult_id 1 identifiable by photo 2 identifiable by photo of specific features and/or supplementary info 3 identifiable from specimen only
abundance Uncommon, adults breed in late October through December
distribution_comments Southwestern North Carolina and eastern Tennessee
checklist_mt_high
>=4,000 ft.
Regular
Frequent
Infrequent
Occasional
Seldom
 Frequency
checklist_mt_low
<4,000 ft.
Regular
Frequent
Infrequent
Occasional
Seldom
checklist_pd
Piedmont
Regular
Frequent
Infrequent
Occasional
Seldom
checklist_cp
Coastal Plain
Regular
Frequent
Infrequent
Occasional
Seldom
habitat Temperate forest
observation_methods Careful visual observation of burrows during day time, head lamps can locate them near burrow entrance at night. Pitfall traps.
state_protection
NHP_ranks
NHP_status
status_comments

Photo Gallery for Antrodiaetus microunicolor a foldingdoor spider

Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 		Recorded by: K. Bischof
Transylvania Co.
Comment: GORG - Obs. at bearwallow bathhouse. Male. ID confirmation by B.Bockhahn.
Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 		Recorded by: Brian Bockhahn
Avery Co.
Comment:
Recorded by: Brian Bockhahn
Avery Co.
Comment: 		Recorded by: Brian Bockhahn
Avery Co.
Comment:
Recorded by: Brian Bockhahn
Avery Co.
Comment: 		Recorded by: Brian Bockhahn
Avery Co.
Comment:
Recorded by: Brian Bockhahn
Avery Co.
Comment: 		Recorded by: K. Bischof
Transylvania Co.
Comment: GORG - Obs. white pine bath rooms.
Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 		Recorded by: Brian Bockhahn
Buncombe Co.
Comment:
Recorded by: Brian Bockhahn
McDowell Co.
Comment: 4 occupied burrows		Recorded by: Brian Bockhahn
Henderson Co.
Comment:
Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 4 occupied burrows		Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 57 occupied burrows
Recorded by: Brian Bockhahn
Buncombe Co.
Comment: 57 occupied burrows		Recorded by: Brian Bockhahn
Transylvania Co.
Comment:
Recorded by: Brian Bockhahn
Surry Co.
Comment: 10 occupied burrows, (3) 4mm, (2) 5mm, (2) 6mm, (2) 7mm, (1) 8mm. Amidst rock outcrops along rail line cut.		Recorded by: Brian Bockhahn
Surry Co.
Comment: 10 occupied burrows, (3) 4mm, (2) 5mm, (2) 6mm, (2) 7mm, (1) 8mm. Amidst rock outcrops along rail line cut.
Recorded by: Brian Bockhahn
Surry Co.
Comment: 10 occupied burrows, (3) 4mm, (2) 5mm, (2) 6mm, (2) 7mm, (1) 8mm. Amidst rock outcrops along rail line cut.		Recorded by: Brian Bockhahn, J. Thomson
Buncombe Co.
Comment:
Recorded by: Brian Bockhahn
Cherokee Co.
Comment: 43 occupied burrows. (2) 2mm, (8) 3mm, (9) 4mm, (5) 5mm, (8) 6mm, (8) 7mm, (3) 8mm. Elevation 1,863', temperature 47. Piney Knob Trailhead access road, Town of Murphy owned, conservation easement held by the state of NC and monitored by Mainspring Conservation Trust.		Recorded by: Brian Bockhahn
Cherokee Co.
Comment: 43 occupied burrows. (2) 2mm, (8) 3mm, (9) 4mm, (5) 5mm, (8) 6mm, (8) 7mm, (3) 8mm. Elevation 1,863', temperature 47. Piney Knob Trailhead access road, Town of Murphy owned, conservation easement held by the state of NC and monitored by Mainspring Conservation Trust.
Recorded by: Brian Bockhahn
Cherokee Co.
Comment: 43 occupied burrows. (2) 2mm, (8) 3mm, (9) 4mm, (5) 5mm, (8) 6mm, (8) 7mm, (3) 8mm. Elevation 1,863', temperature 47. Piney Knob Trailhead access road, Town of Murphy owned, conservation easement held by the state of NC and monitored by Mainspring Conservation Trust.		Recorded by: Brian Bockhahn
Cherokee Co.
Comment: 43 occupied burrows. (2) 2mm, (8) 3mm, (9) 4mm, (5) 5mm, (8) 6mm, (8) 7mm, (3) 8mm. Elevation 1,863', temperature 47. Piney Knob Trailhead access road, Town of Murphy owned, conservation easement held by the state of NC and monitored by Mainspring Conservation Trust.
Recorded by: Brian Bockhahn
Cherokee Co.
Comment: 43 occupied burrows. (2) 2mm, (8) 3mm, (9) 4mm, (5) 5mm, (8) 6mm, (8) 7mm, (3) 8mm. Elevation 1,863', temperature 47. Piney Knob Trailhead access road, Town of Murphy owned, conservation easement held by the state of NC and monitored by Mainspring Conservation Trust.		Recorded by: Brian Bockhahn
Clay Co.
Comment: 6 occupied burrows, (4) 4mm, (1) 5mm, (1) 6mm. Not present near rock faces. None found along creek.
Recorded by: Brian Bockhahn
Haywood Co.
Comment: Rosemount Road, below "the orchards overlook". 8 occupied burrows 3,4,4,5,5,6,6,6 mm. 37 degrees. Elevation 3822'.		Recorded by: Brian Bockhahn
Haywood Co.
Comment: Greenspire Road, below "the orchards overlook". 4 occupied burrows in dry embankment. 3,3,6,8 mm. 37 degrees. Elevation 3822'
Recorded by: Brian Bockhahn
Jackson Co.
Comment: 2 occupied burrows, disturbed embankment along feeder creek.		Recorded by: Brian Bockhahn
Jackson Co.
Comment: Balanced Rock overlook. 18 occupied burrows (3) 3mm, (5) 4mm, (6) 6mm, (3) 7mm, (1) 11mm.
Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 256 occupied burrows.		Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 256 occupied burrows.
Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 66 occupied burrows		Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 66 occupied burrows
Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 66 occupied burrows		Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 118 occupied burrows. (3) 1mm, (11) 2mm, (13) 3mm, (25) 4mm, (16) 5mm, (16) 6mm, (17) 7mm, (1) 8mm, (4) 9mm, (5) 10mm, (5) 11mm, (2) 12mm.
Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: 17 occupied burrows, (5) 4mm or less, (7) 5-7mm, (3) 7mm, (1) 8mm, (1) 10mm		Recorded by: Brian Bockhahn, J. Thomson
Macon Co.
Comment: Big Laurel Falls, at least 3 active burrows in mossy banks
Recorded by: Brian Bockhahn, J. Thomson
Buncombe Co.
Comment: 8 active burrows		Recorded by: Brian Bockhahn
Caswell Co.
Comment:
Recorded by: Brian Bockhahn
Caswell Co.
Comment: 		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, south facing slope. Turret size 2-20mm. 7 occupied burrows in 3-6 mm range (male and immature); 11 occupied burrows in 6-10 mm range (likely females); 1 occupied burrow in 10-12 mm range (female)
Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss embankment, 4-6' off the ground, west facing slope. Turret size 2-20mm. 4 occupied burrows in 3-6 mm range (male and immature); 1 occupied burrows in 6-10 mm range (likely females).		Recorded by: Brian Bockhahn
Macon Co.
Comment: Moss and soil embankment, 4-6' off the ground, NNW facing slope. Turret size 2-20mm. 59 occupied burrows in 3-6 mm range (male and immature); 33 occupied burrows in 6-10 mm range (likely females); 9 occupied burrows in 10-12 mm range (female)