Snakes and spiders in Marion County, Illinois
Marion County, home of Salem, has 0 snake and 6 spider species on record, from 3 licensed snake and 1,055 spider records. No venomous snake or spider reaches the county list, but the northern cottonmouth, the eastern copperhead, the eastern massasauga, the timber rattlesnake and 3 more are on the Illinois list: treat any snake or spider like them as venomous until identified.
What spiders are in Marion County?
In all, 6 spider species are on the Marion County list. The most recorded are the arabesque orbweaver (30), the openfield orbweaver (26) and the lance wolf spider (19). Marion County holds more than half of all Illinois records of Micaria longipes and the blacktailed red sheetweaver.
Related species: Micaria pulicaria
| # | Species | Records | Share of Illinois records |
|---|---|---|---|
| 1 | Arabesque orbweaver Neoscona arabesca | 30 | 23% |
| 2 | Openfield orbweaver Araneus pratensis | 26 | 28% |
| 3 | Lance wolf spider Schizocosa avida | 19 | 16% |
| 4 | Banded garden spider Argiope trifasciata | 17 | 12% |
| 5 | Micaria longipes | 17 | 71% |
| 6 | Blacktailed red sheetweaver Florinda coccinea | 10 | 59% |
What stands out in Marion County
Species for which Marion County holds a large share of all Illinois records: Micaria longipes, 71% (17 of 24); the openfield orbweaver, 28% (26 of 94); the arabesque orbweaver, 23% (30 of 133); the lance wolf spider, 16% (19 of 119).
Common in Illinois, not on the Marion County list
Among the spiders most recorded across Illinois, these do not reach the county list: Pardosa saxatilis (545 statewide), the bold jumper (344 statewide), the brown recluse (313 statewide), Piratula minuta (208 statewide), the pale sheetweb weaver (196 statewide) and the brush-legged split wolf spider (192 statewide). Few records here can mean the species is rare in the county, or that few people have looked.
Marion County among Illinois counties
By licensed snake records Marion County ranks 62nd of 90 Illinois counties with any.
Other Illinois counties with their own page: Union County, Cook County, Will County, Champaign County, Jo Daviess County, Mason County, Iroquois County and Effingham County.
The whole state: venomous species in Illinois, all snakes, all spiders.
GBIF records read 2026-09-29. Listed: any license. Counted: CC0/CC BY only. How we count.