Thiodina hespera

<< Previous |Next >>
toggle captions

Current valid name

Thiodina hespera Richman and Vetter (family Salticidae)

Recognition and diagnostic features

Jumping spider, two pairs of bulbous setae on the ventral surface of tibia I, typical jumping spider body shape but with elongate abdomen tapering at the posterior end. Females and immatures tan and pale with 4 black dots on anterior portion of cephalothorax. Males with dark cephalothorax and white scales.

Spider

Body lengths when mature: male: 5.6 mm, female: 7 mm

Sexual dimorphism in matures, immatures resemble miniature females, males have dark cephalothorax.

Egg sac

Description: retreat-like sac, white silk, female stays inside and guards eggs, 11.9 mm wide, 24.2 mm long

Number of eggs per sac: 26.0 ± 11.7

Size of egg: 1.19 ± 0.077 mm

Time of year eggs are likely to be laid: May through August

Distribution

In California: throughout the state

Elsewhere: Arizona, New Mexico, Utah

Native to North America

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

Biology

Diurnal hunting spiders. Peak abundance is in May, although this may reflect more concentrated collecting efforts rather than actual population peaks. Common in citrus and in homes.

Status in table grapes

Level of Incidence: uncommon

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

Taxonomic history

Although this species was only named in 2004, it may have mistakenly been referred to as the eastern species T. sylvana or T. puerpura in the literature.

Selected references

Richman, D. B., and R. S. Vetter. 2004. A review of the spider genus Thiodina (Araneae, Salticidae) in the United States. J. Arachnol. 32: 418-431.