Spiders of North Carolina

Arachnids of North Carolina

Order:
Scientific Name: Common Name:		Family (Alpha):

Eustala emertoni - an orbweaver Araneidae Members:			NC Records	BugGuide Account	Public View

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Distribution Records
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Vetting Levels

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

Click on graph to enlarge

synonym

taxonomic_comments

species_comment

formerly called E. triflex

id_comments

Legs with only femora banded, abdomen oval without hump, which separates this from others in the genus. Males difficult to distinguish from others in the genus.

total_length

Small, female total body length 3.4-7.6 mm, Male total body length 3.8-5 mm

structural_features

silk_web

Small orb web.

fld_guide_descriptions

online_photos

prey

predators

behavior

distribution_reference

technical_reference

Spiders of North America - Bradley; Spiders of the Carolinas – Gaddy; Bugguide; an examination of the structure and genitalia of Cyclose and Eustala: http://www.biodiversitylibrary.org/page/4314711#page/79/mode/1up. See also: Levi, H. W. (1977). The American orb-weaver genera Cyclosa, Metazygia and Eustala north of Mexico (Araneae, Araneidae). Bulletin of the Museum of Comparative Zoology 148: 61-127.

adult_id

1 identifiable by photo 2 identifiable by photo of specific features and/or supplementary info 3 identifiable from specimen only

abundance

Very uncommon.

distribution_comments

Very uncommon throughout North Carolina and a handful of states in the southeast and mid-Atlantic states.

checklist_mt_high
>=4,000 ft.

Regular	Frequent	Infrequent	Occasional	Seldom	Frequency Regular – almost always observed on given visit; >=90% chance of observation Frequent – usually observed on a given visit; >=50%<90% chance of observation Infrequent – observed less than 50% of visits; >=25%<50% chance of observation Occasional – observed on only on a small minority of visits; >=10%<25% chance of observation Seldom – not usually seen on visits; <10% chance of observation These terms refer to visits to appropriate habitats made at appropriate times of the year, making use of common sampling/observation methods. Under those conditions, Frequency refers to the chance of observing at least one individual on a given visit made anywhere within a particular region, or over multiple visits to a single site.

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

forest edge, fields, pine forest, marshes.

observation_methods

Sweep netting.

state_protection

NHP_ranks

NHP_status

status_comments

Photo Gallery for Eustala emertoni an orbweaver
	Recorded by: Brian Bockhahn Buncombe Co. Comment:	Recorded by: Donald Zepp Johnston Co. Comment: This specimen does not fully match any of the Eustala spp. described in Levi (1977). However, its forward-projecting scape makes it unmistakably Eustala, and its wide epigynum and its abdominal profile all suggest E. emertoni.
	Recorded by: Donald Zepp Johnston Co. Comment: This specimen does not fully match any of the Eustala spp. described in Levi (1977). However, its forward-projecting scape makes it unmistakably Eustala, and its wide epigynum and its abdominal profile all suggest E. emertoni.	Recorded by: Donald Zepp Johnston Co. Comment: This specimen does not fully match any of the Eustala spp. described in Levi (1977). However, its forward-projecting scape makes it unmistakably Eustala, and its wide epigynum and its abdominal profile all suggest E. emertoni.
	Recorded by: Brian Bockhahn Hyde Co. Comment:	Recorded by: John Petranka Orange Co. Comment: New Hope Creek Biodiversity Survey
	Recorded by: John Petranka Orange Co. Comment: New Hope Creek Biodiversity Survey	Recorded by: John Petranka Orange Co. Comment: New Hope Creek Biodiversity Survey
	Recorded by: Brian Bockhahn Scotland Co. Comment:	Recorded by: Brian Bockhahn Wilkes Co. Comment:
	Recorded by: Brian Bockhahn Wilkes Co. Comment:	Recorded by: Tracy S. Feldman Scotland Co. Comment:
	Recorded by: Tracy S. Feldman Scotland Co. Comment:

Photo Gallery for Eustala emertoni an orbweaver