Trashline Orb Weaver
( Cyclosa conica )


2014-0308-01100147-ARA01202-Cyclosa_conica[1313h22s,F,A,web]{MSHarris}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Cyclosa conica
(Pallas ,1772 )
Common Name:Trashline Orb Weaver
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Family:Araneidae
Genus:Cyclosa
Taxon Code:ARA01202
ITIS/TSN:854361

LOCATION DETAILS
Location Name
Joaquin Miller Park, Joaquin Miller Park, 3590 Sanborn Drive, Oakland
County:Alameda County
ECI Site#:CA01100147

RECOGNITION
Recognition
C. conica can be distinguished from the other species in this genus by the folded paramedian apophysis and one or two ventral macrosetae on coxa IV, and by the posteriorly tapered median septum (female).
Description
This orb weaver has overlapping ranges with C. turbinata. Both are dark, but C. conica may be orangish in color; C. turbinata will not. C. conica also lacks the pair of dorsal abdominal protuberances that are characteristic of C. turbinata and has one tubercle (hump) at the rear of the abdomen.
Body Length
(F) 5.3-7.5 mm; (M) 3.6-4 mm.
Similar Taxa
Cyclosa turbinata

BIOLOGY
Nesting Preferences
This spider has the unusual habit of lining its web with its own feces and the dead bodies of insects it has eaten. Its webs are orb-shaped, about a foot in diameter and ""trash"" is lined on the vertical line of web (stabilimentum) at the web's center. The spider sits amongst its trash and is camouflaged.
Range
Widespread in America north of Mexico, but uncommon in the southeastern U.S. and the southern half of the Great Plains.
Development
Young mature from mid-May to summer. Egg sac is round and golden yellow.

CREDITS
Photographer
Michelle Sawyers-Harris
Insect Sciences Museum of California

References
Species Cyclosa conica. (http://bugguide.net/node/view/38514). Accessed March 12, 2016. .
ITIS.


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