8 species in BugGuide's range.
The Ebo characteristic trait is the elongated second pair of legs, which can be more than twice as long as the other legs. AMEs (anterior median eyes) are distinctly larger than the other eyes, both rows slightly recurved, medians of both rows closer to the laterals than to each other (Schick 1965; Sauer and Platnick 1972; Levy 1977).
E. contrastus - male 2 mm, female 2.25 mm, Carapace pale yellow with dark anterolateral spots, posterolateral stripes and network of reticulations. Legs pale yellow with dark dorsal spots distally on femurs, proximally on tibiae and metatarsi, patellae & tibiae with dark middorsal stripes(but not metatarsi). Dorsum of abdomen pale yellow with cardiac mark, row of white spots, and posterior chevron pattern.
E. evansae - 3 longitudinal stripes instead of one on the legs.
E. iviei - male 2 mm, female 3 mm, carapace yellow, legs with dorsal stripe, abdomen pale yellow with cardiac mark & two pairs of brown spots in western specimens, sometimes covered in reddish brown fleckings in eastern specimens
E. latithorax - male 2.25, female 3 mm. Carapace orange brown with eye area pale yellow & lateral areas with reddish-brown flecking. Legs pale yellow with flecking and dorsal stripes. Abdomen with fleckings, cardiac mark & posterior chevrons.
E. merkeli - male 2.25 mm body pale, legs with middorsal stripe. Males carapace yellow abdomen white with no markings. Female similar to male but with scattered dark circular markings on the carapace and abdomen.
E. pepinensis - male 2.5 mm, female 4 mm. Carapace orange-brown with dark fleckings, sometimes with thin pale stripe at border. Legs not striped but with irregular brown flecking, abdomen gray usually with cardiac mark & posterolateral stripes - when mark is missing it presents bilateral dark spots representing remnants of the mark [cite:231100]
E. punctatus - male 2 mm, female 2.5 mm. Carapace yellow with scattered dark circular markings. Female same as male except abdomen may have cardiac mark & legs may have fleckings.
Exact range within these countries will be added when time allows
E. bucklei - Canada
E. contrastus - FL
E. evansae - AZ, CA, CO, ID, MX, OK, OR, TX, UT, WY (Western US to Texas & Oklahoma)
E. iviei - AB, CT, ID, MS, MI, NJ, NY, ND, OR, SK, UT (Northern US, AB, & SK)
E. latithorax - AR, CT, DC, GA, IL, MA, MI, MS, NE, NJ, NY, NC, OH, PA, RI, SC, TN, TX, VA
E. merkeli - AZ, CA, TX, UT
E. pepinensis - AB, BC, CA, CO, ID, IL, KS, MI, MN, MT, NV, ON, OR, SK, TX, UT, WA, WY. Western & Central US & Southern Canada
E. punctatus - AR, KS, NM, OK, TX
E. merkeli most similar to E. evansae
E. pepinensis most similar to E. punctatus