Anyphaena pacifica
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adult female, dead, dorsal view |
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adult male, dead, dorsal view |
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female genitalia; epigynum |
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male genitalia; palp, lateral view |
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grape size comparison with adult spiders; male (left), female (right) |
Current valid name
Anyphaena pacifica (Banks) (family Anyphaenidae)
Recognition and diagnostic features
In life, pale coloration overall with faint stripes on cephalothorax.
Related or similar species
Hibana incursa
Spider
Body lengths when mature: male: 5.2 mm, female: 5.4
Immatures resemble miniature adults.
Egg sac
No egg or egg sac information is available for this species
Distribution
In California: throughout the state
Elsewhere: western United States and Canada from the Rocky Mountains to the Pacific Ocean
Native to North America
This species has not been transported or become established outside of its range.
Biology
Nocturnal hunting spider. Makes egg sacs in leaves and others surface, guards egg sac. Males are collected from February to late July, females are collected year round. Found in homes and under rocks, collected in pitfall traps.
Status in table grapes
Level of Incidence: very rare
Level of Concern in New Zealand: WPNZ (May 2010) nr, BORIC (Dec 2011) nr (not listed), MAF-BPRA (2002) nr (coding definition)
Level of Concern in Australia: WPAU (2006) nr (coding definition)
Level of Medical importance: large enough to bite but no recorded bites
Common name
None for species, ghost spiders for family
Taxonomic history
Several early synonyms, stable after 1950.
Selected references
Platnick, N. I. 1974. The spider family Anyphaenidae in America north of Mexico. Bull. Mus. Comp. Zool. 146: 205-266.
