Metacyrba taeniola similus

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Current valid name

Metacyrba taeniola similis Banks (family Salticidae)

Recognition and diagnostic features

Small jumping spider with elongate abdomen and thin, yellow, paired, often-broken longitudinal lines along abdomen dorsum, tibia of leg pair I enlarged.

Spider

Body lengths when mature: male: 4.5 mm (range = 3.7 - 4.9 mm), female: 5.8 mm (range = 4.9 - 7.3 mm)

Immatures resemble miniature adults.

Egg sac

Description: retreat-like sac of white silk, longer than wide, female hides inside and guards eggs, 7.1 mm wide, 17.3 mm long

Number of eggs per sac: 11.7 ± 5.7

Size of egg: 0.84 ± 0.064 mm

Distribution

In California: throughout much of California

Elsewhere: southwestern U.S. to Oklahoma and Texas, Mexico

Native to North America

This species has not been transported or become established outside of its range.

Biology

Diurnal hunting spider. Collected mostly under rocks or bark; seems unlikely to be found in grapes very often.

Status in table grapes

Level of Incidence: common under bark, uncommon in grape bunches

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: none

Common name

None for species, jumping spiders for family

Taxonomic history

In 2005, the western species was renamed as the subspecies M. taeniola similis. Prior to that, M. taeniola was considered to exist from California to Florida. However, due to leg coloration and habitat differences between the eastern and western members of the species, it was felt that subspecies status better described the subtle differences. The eastern species is now known as M. taeniola taeniola.

Commonly encountered synonyms

Metacyrba taeniola

Selected references

Edwards, G. B. 2005. A review of described Metacyrba, the status of Parkella, and notes on Platycryptus and Balmaceda, with a comparison of the genera (Araneae: Salticidae: Marpissinae). Insecta Mundi 19: 193-226.