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Snakes and spiders in Milam County, Texas

Milam County, home of Cameron, has 13 snake and 23 spider species on record, from 178 licensed snake and 376 spider records. Venomous species here: the northern cottonmouth, the western diamondback rattlesnake, the broad-banded copperhead, the timber rattlesnake and the southern black widow.

13snake species
23spider species
5venomous
Bitten in Milam County? Call 911 for a venomous snakebite or any bite with trouble breathing. For advice on any bite or sting, call Poison Help at 1-800-222-1222 (free, 24/7, U.S.-wide). Do not cut the wound, suck out venom or use a tourniquet. General information, not medical advice. Do not handle or try to identify a snake or spider by this page; if unsure, treat it as venomous.

Are there venomous snakes or spiders in Milam County?

Yes. The northern cottonmouth: 12 licensed records, 1% of all Texas records of it. The western diamondback rattlesnake: 6 licensed records, 0% of all Texas records of it. The broad-banded copperhead: 5 licensed records, 1% of all Texas records of it. The timber rattlesnake: on record, no openly licensed records to count. The southern black widow: 12 licensed records, 6% of all Texas records of it.

What snakes are in Milam County?

In all, 13 snake species are on the Milam County list. The most recorded are the western rat snake (43), the rough earthsnake (20) and the plain-bellied watersnake (15).

#SpeciesRecordsShare of Texas records
1Western rat snake
Pantherophis obsoletus
432%
2Rough earthsnake
Haldea striatula
201%
3Plain-bellied watersnake
Nerodia erythrogaster
151%
4Western ribbon snake
Thamnophis proximus
151%
5Coachwhip
Masticophis flagellum
141%
6Diamondback water snake
Nerodia rhombifer
131%
7Northern cottonmouth venomous
Agkistrodon piscivorus
121%
8Western diamondback rattlesnake venomous
Crotalus atrox
60%
9Broad-banded copperhead venomous
Agkistrodon laticinctus
51%
10Eastern racer
Coluber constrictor
41%
11DeKay's brown snake
Storeria dekayi
30%
12Eastern hog-nosed snake
Heterodon platirhinos
20%
13Timber rattlesnake venomous
Crotalus horridus
——
Source: GBIF records located in Milam County (GADM level 2), read 2026-09-29. Listed from records under any license; counts are CC0/CC BY only.

When are snakes out in Milam County?

Observation records of snakes in Milam County run mostly March through October, peaking in April with 24% of them, the same peak as Texas as a whole.

January: 2 observation records (2%)JanFebruary: 1 observation record (1%)FebMarch: 8 observation records (7%)Mar7%April: 27 observation records (24%)Apr24%May: 23 observation records (21%)May21%June: 16 observation records (14%)Jun14%July: 6 observation records (5%)JulAugust: 6 observation records (5%)AugSeptember: 8 observation records (7%)Sep7%October: 7 observation records (6%)Oct6%November: 5 observation records (4%)NovDecember: 3 observation records (3%)Dec

What spiders are in Milam County?

In all, 23 spider species are on the Milam County list. The most recorded are the black-and-yellow argiope (70), the bold jumper (56) and the green lynx spider (29).

#SpeciesRecordsShare of Texas records
1Black-and-yellow argiope
Argiope aurantia
704%
2Bold jumper
Phidippus audax
564%
3Green lynx spider
Peucetia viridans
293%
4Rabid wolf spider
Rabidosa rabida
262%
5Western spotted orbweaver
Neoscona oaxacensis
194%
6
Phidippus arizonensis
1414%
7Southern black widow venomous
Latrodectus mactans
126%
8
Phidippus texanus
117%
9Spiny-backed orbweaver
Gasteracantha cancriformis
111%
10Spotted orbweaver
Neoscona crucifera
102%
11Apache jumping spider
Phidippus apacheanus
912%
12Lance wolf spider
Schizocosa avida
64%
13Carolina jumping spider
Phidippus carolinensis
53%
14
Hogna antelucana
51%
15Triangulate bud spider
Steatoda triangulosa
51%
16Cardinal jumper
Phidippus cardinalis
44%
17Striped lynx spider
Oxyopes salticus
41%
18Twin-flagged jumping spider
Anasaitis canosa
41%
19Banded garden spider
Argiope trifasciata
31%
20
Phidippus pius
15%
21Dotted wolf spider
Rabidosa punctulata
——
22Georgia wolf spider
Tigrosa georgicola
——
23
Schizocosa perplexa
——
Source: GBIF records located in Milam County (GADM level 2), read 2026-09-29. Listed from records under any license; counts are CC0/CC BY only.

When are spiders out in Milam County?

Observation records of spiders in Milam County run mostly April through November, peaking in June with 16% of them; across Texas the peak is April.

January: 4 observation records (1%)JanFebruary: 9 observation records (2%)FebMarch: 11 observation records (3%)MarApril: 46 observation records (12%)Apr12%May: 36 observation records (10%)May10%June: 61 observation records (16%)Jun16%July: 48 observation records (13%)Jul13%August: 40 observation records (11%)Aug11%September: 40 observation records (11%)Sep11%October: 53 observation records (14%)Oct14%November: 17 observation records (5%)NovDecember: 10 observation records (3%)Dec

Common in Texas, not on the Milam County list

Among the snakes most recorded across Texas, these do not reach the county list: the western ground snake (1,963 statewide), the checkered garter snake (1,851 statewide), the gopher snake (1,440 statewide) and the eastern copperhead (1,188 statewide). Few records here can mean the species is rare in the county, or that few people have looked.

Among the spiders most recorded across Texas, these do not reach the county list: the familiar jumping spider (518 statewide) and Cicurina varians (514 statewide). Few records here can mean the species is rare in the county, or that few people have looked.

Harmless lookalikes in Milam County

Copperheads are on the county list, and so are harmless species often taken for them: the plain-bellied watersnake and the eastern hog-nosed snake. Cottonmouths are on the county list, and so are harmless species often taken for them: the plain-bellied watersnake and the diamondback water snake. Rattlesnakes are on the county list, and so are harmless species often taken for them: the eastern hog-nosed snake. Widow spiders are on the county list, and so are harmless species often taken for them: the triangulate bud spider.

Milam County among Texas counties

By licensed snake records Milam County ranks 66th of 254 Texas counties with any.

Other Texas counties with their own page: Travis County, Brewster County, Harris County, Brazos County, El Paso County, Jeff Davis County, Val Verde County and Bexar County.

The whole state: venomous species in Texas, all snakes, all spiders.

GBIF records read 2026-09-29. Listed: any license. Counted: CC0/CC BY only. How we count.

About these numbers

A species is listed for a state once GBIF holds at least 10 records of it located inside the state by coordinates, under any license. Every count, share, month and county shown is computed only from records published under CC0 or CC BY, so a listed species can show few or no counted records. Monthly patterns show when people record snakes and spiders, which also reflects when people are outdoors. Venomous status follows taxonomy: pit vipers and coral snakes; widow and recluse spiders; the Arizona bark scorpion. Records filed under older names count for the species they belong to today. Full methodology.