A place for John B and I to pool our thoughts...
- Northeastern US (maybe one found in TX) Carapace, sternum, legs green. Abdomen yellow-green enclosing some white spots anteriorly. Eyes unknown, 4 pairs of dark red spots posteriorly, male has legs with wide red bands
. Male - 3 mm.
[A] Posterior Median Eyes ringed in yellow & dorsum with black patch
- (greenish yellow) New England to GA
* black patch bordered by crison red border on golden yellow background
- A. bonsallae
- (tranparent green) New York to Florida west to Kansas & Texas
* central black patch of irregular outline, between black patch and white mark is reddish pigment, paired red spots (drawing shows 3 or 4 pairs)
- A. niveus
- (transparent green) New Jersey to Florida west to Missouri & Arkansas
* large black patch on dorsum is usually broken into an anterior transverse and a posterior triangular spot, but sometimes is fused, may have a couple of pairs of red spots posteriorly
[B] No dorsal black patch
- A. cingulatus
- (light yellowish green) Mass. to Florida west to Missouri & Texas
* A. cingulatus
- relatively large dark red spots which may have a yellow halo and are in a longitudinal band of lighter green, no black on dorsal abdomen (drawing shows 4 pairs of spots, photo shows 5 pairs)
[II] Yellow carapace
- A. miami
* Dorsum of abdomen dark anteriorly between humps, with a dark spot on anterior of each hump, and a brown folium posteriorly on dorsum. Sides white. The abdomen is subspherical, shield-shaped with anteriorly directed humps. Abdomen shape is diagnostic.
- A. carroll
- paired red spots on white?
- A. gadus
- Mass. to Missouri
* The only female with red banded legs
& 4 pairs of black spots posteriorly, each surrounded by a light ring (diagnostic).
- A. guttulatus
- New England to Wisconsin, south to southern Georgia & Arkansas.
* discrete 4 pairs of crimson spots, some have a triangular black patch posteriorly, & a transverse anterior black band
- A. prunus
- Maryland & Florida (I assume could be found in between states as well)
* paired red spots (drawing shows 4 pairs)
- A. raui
- Illinois & Missouri
* probably had paired red spots on white?, no longer visible
- A. texanus
* very similar to A. guttulatus
... fainter pattern
- A. thaddeus
- Common in the Eastern US, but rare on the Gulf Coast & FL.
* Carapace, sternum, legs golden yellow. Distal articles of legs with some bands; male second tibia slightly curved with macrosetae, and with a green spot under each femur
. Dorsum of abdomen whitish with 5 pairs of dark brown spots that are farther apart anteriorly than posteriorly. Sides of abdomen blackish brown. According to Comstock the dorsum varies from yellowish to pink or purple. Male coloration much the same except carapace darker in the center and almost no dark pigment on abdomen, the lateral bands are indistinct.
[A] Abdomen wider than long & periphery of dorsum spotted
 Yellow rings around posterior eyes,
- A. calusa
* distinct red mark anterior on each lateral hump. A pair of red spots posteriorly on each side. Legs with distal ends of articles darker.
(I'd say this means red banded legs.)
 3 pairs of black spots posteriorly
- A. miniatus
- Mass. to NE Texas & Florida
* abdomen with transverse white band & 3 pairs of black spots, abdomen wider than long
 4 pairs of black spots posteriorly
- A. partitus
- Long Island to Arkansas & Florida
*shoulders with black marks, 4 pairs of black spots, area between the humps is white
[B] Abdomen with green & white longitudinal stripes
 Posterior Median Eyes ringed in white
- A. juniperi
- (yellowish) Nova Scotia to Florida west to Arkansas & Texas
* may or may not have paired red spots on abdomen; female abdomen subspherical, male abdomen longer than wide. Mandibles may have red stripes.
 Posterior Median Eyes not ringed & has median anterior hump
- A. bivittatus
- Maine to Mississippi
* Usually no paired spots & legs with dark red spots
(exceptions - carapace & abdomen may be red or green! and some adults may have spots at the edge of stipes)
exception - one set had green stripes that changed to red before molting to adults
You know I realize this spider below appears to have abdomen longer than wide, but it also looks like it has white around the eyes... a feature of A. juniperi
. 1951, Archer says that the main difference between A. juniperi & bivittata
are that the longitudinal white stripes are more defined in A. bivittata
[III] Brown carapace
Both of these are also found in the west
- A. detrimentosus
- A. pegnia
- Mass. to Indiana, common in the SE US; in the south west to the Los Angeles area.
* Carapace & legs yellow-brown. Legs sometimes banded; male second tibia with strong macrosetae.
Dorsum of abdomen with anterior dorsal white mark, wider than long (like the shape of a butterfly), framed by black. Three to four pairs of black transverse lines, the posterior ones just being a black spot. Some red pigment above the dorsal white mark and some green on sides and posteriorly. Male the same but adbominal black spots much less distinct or absent. Amount of red and green may vary. Female pattern is diagnostic.
- A. tuscarora
- North Carolina
* Female dorsum of abdomen yellowish brown with anterior transverse band consisting of tiny white spots. Male Dorsum of abdomen orange-brown without white pigment. (descriptions from specimens in alcohol)
Levi in 1973, pp. 473-552 - Small Orb-weavers of the Genus Araneus North of Mexico (Araneae, Araneidae)
Archer, 1951 Studies in the Orbweaving Spiders