Spiders in Maryland

Maryland has 153 spider species on record, each with at least 10 GBIF records in the state, and 5,679 licensed records in all. The most recorded are the orchard orbweaver, the bold jumper and the familiar jumping spider. Medically significant: the northern black widow and the southern black widow.

153spider species listed

2venomous

17thof 50 states by species count

Augbusiest month, observations

Bitten in Maryland? 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.

Widow spiders in Maryland

Widow spiders are a small part of the spider record here: two species with 1% of records between them. The most recorded is the northern black widow (37), ahead of the southern black widow (25).

Northern black widowLatrodectus variolus37 records in MD · venomous

Southern black widowLatrodectus mactans25 records in MD · venomous

Observation records of the northern black widow in Maryland run mostly April through September, peaking in June; most licensed records come from Harford County, Frederick County and Prince George's County.

Jumping spiders in Maryland

Jumping spiders dominate the spider record of Maryland: 31 species and 30% of all records. The most recorded is the bold jumper (273), ahead of the familiar jumping spider (257).

Bold jumperPhidippus audax273 records in MD

Familiar jumping spiderPlatycryptus undatus257 records in MD

Paraphidippus aurantius161 records in MD

Bronze jumperEris militaris149 records in MD

Magnolia green jumperLyssomanes viridis95 records in MD

Sylvan jumping spiderColonus sylvanus87 records in MD

Putnam's jumperPhidippus putnami80 records in MD

Flea jumping spiderNaphrys pulex74 records in MD

Peppered jumperPelegrina galathea65 records in MD

White-jawed jumping spiderHentzia mitrata54 records in MD

Brilliant jumping spiderPhidippus clarus53 records in MD

Grayish jumping spiderPhidippus princeps52 records in MD

Plus 19: Ribbon jumping spider, Dimorphic jumper, Zebra spider, Canopy jumping spider, Asian wall jumper, Thin-spined jumping spider, Common white-cheeked jumping spider, Slender ant mimicking jumping spider, Whitman's jumping spider, Common Hentz jumping spider, Hammerjawed jumper, Four-lined slender jumping spider, Habronattus coecatus, Habronattus decorus, Hakka himeshimensis, Phidippus pius, Colonus puerperus, Eris floridana, Short-bellied slender jumping spider.

Observation records of the bold jumper in Maryland run mostly March through October, peaking in May; most licensed records come from Frederick County, Montgomery County and Prince George's County. Observation records of the familiar jumping spider in Maryland run mostly April through October, peaking in September; most licensed records come from Montgomery County, Frederick County and Baltimore County. Observation records of Paraphidippus aurantius in Maryland run mostly May through October, peaking in June; most licensed records come from Montgomery County, Harford County and Prince George's County.

Wolf spiders in Maryland

Wolf spiders: 16 species are listed for Maryland, with 263 records (5% of the state's spider records). The most recorded is the rabid wolf spider (66), ahead of the wetland giant wolf spider (59).

Rabid wolf spiderRabidosa rabida66 records in MD

Wetland giant wolf spiderTigrosa helluo59 records in MD

Georgia wolf spiderTigrosa georgicola29 records in MD

Tigrosa annexa21 records in MD

Allocosa funerea20 records in MD

Dotted wolf spiderRabidosa punctulata20 records in MD

Drumming sword wolf spiderGladicosa gulosa15 records in MD

Shoreline wolf spiderArctosa littoralis12 records in MD

Trochosa sepulchralis9 records in MD

Woodland giant wolf spiderTigrosa aspersa6 records in MD

Brush-legged split wolf spiderSchizocosa ocreata3 records in MD

Unbanded wolf spiderHogna baltimoriana2 records in MD

Plus four: Lance wolf spider, Gladicosa pulchra, Shore spider, Varacosa avara.

Observation records of the rabid wolf spider in Maryland run mostly May through October, peaking in July; most licensed records come from Montgomery County, Frederick County and Prince George's County. Observation records of the wetland giant wolf spider in Maryland run mostly March through October, peaking in May; most licensed records come from Baltimore County, Montgomery County and Howard County.

Orb weavers in Maryland

Orb weavers dominate the spider record of Maryland: 39 species and 26% of all records. The most recorded is the spined micrathena (183), ahead of the black-and-yellow argiope (175).

Spined micrathenaMicrathena gracilis183 records in MD

Black-and-yellow argiopeArgiope aurantia175 records in MD

Arrowhead orbweaverVerrucosa arenata156 records in MD

Spotted orbweaverNeoscona crucifera133 records in MD

Marbled orbweaverAraneus marmoreus99 records in MD

Arabesque orbweaverNeoscona arabesca70 records in MD

Basilica orbweaverMecynogea lemniscata66 records in MD

Labyrinth orbweaverMetepeira labyrinthea60 records in MD

Furrow orbweaverLarinioides cornutus57 records in MD

Butterfly orbweaverAraneus pegnia48 records in MD

Arrowshaped micrathenaMicrathena sagittata45 records in MD

White micrathenaMicrathena mitrata40 records in MD

Plus 27: Cone-shaped orbweaver, Banded garden spider, Cyclosa turbinata, Lattice orbweaver, Red-femured spotted orbweaver, Sixspotted orbweaver, Spiny-backed orbweaver, Heptagonal orbweaver, Toadlike bolas spider, Humpbacked orbweaver, Greenlegged orbweaver, American bolas spider, Joro spider, Lined orbweaver, Bridge orbweaver, Larinia directa, Mangora spiculata, Tuftlegged orbweaver, Difoliate orbweaver, Openfield orbweaver, Red-backed orbweaver, Starbellied orbweaver, Red-spotted orbweaver, Fierce orbweaver, Nordmann's orbweaver spider, Giant lichen orbweaver, Shamrock orbweaver.

Observation records of the spined micrathena in Maryland run mostly July through September, peaking in August; most licensed records come from Montgomery County, Baltimore County and Anne Arundel County. Observation records of the black-and-yellow argiope in Maryland run mostly July through October, peaking in August; most licensed records come from Prince George's County, Frederick County and Anne Arundel County. Observation records of the arrowhead orbweaver in Maryland run mostly June through September, peaking in August; most licensed records come from Prince George's County, Montgomery County and Howard County.

Long-jawed orb weavers in Maryland

Long-jawed orb weavers: three species are listed for Maryland, with 389 records (7% of the state's spider records). The most recorded is the orchard orbweaver (384), ahead of the eastern cave long-jawed spider (5).

Orchard orbweaverLeucauge venusta384 records in MD

Eastern cave long-jawed spiderMeta ovalis5 records in MD

Green long-jawed orbweaverTetragnatha viridison record in MD

Observation records of the orchard orbweaver in Maryland run mostly April through August, peaking in June; most licensed records come from Montgomery County, Prince George's County and Frederick County.

Fishing and nursery web spiders in Maryland

Fishing and nursery web spiders: seven species are listed for Maryland, with 624 records (11% of the state's spider records). The most recorded is the dark fishing spider (225), ahead of the nursery web spider (222).

Dark fishing spiderDolomedes tenebrosus225 records in MD

Nursery web spiderPisaurina mira222 records in MD

White-banded fishing spiderDolomedes albineus63 records in MD

Sixspotted fishing spiderDolomedes triton48 records in MD

Banded fishing spiderDolomedes vittatus27 records in MD

Dock spiderDolomedes scriptus21 records in MD

Pisaurina dubia18 records in MD

Observation records of the dark fishing spider in Maryland run mostly March through October, peaking in May; most licensed records come from Montgomery County, Baltimore County and Prince George's County. Observation records of the nursery web spider in Maryland run mostly April through October, peaking in September; most licensed records come from Montgomery County, Harford County and Prince George's County. Observation records of the white-banded fishing spider in Maryland run through most of the year, peaking in April; most licensed records come from Prince George's County, Howard County and Montgomery County.

Crab spiders in Maryland

Crab spiders: nine species are listed for Maryland, with 231 records (4% of the state's spider records). The most recorded is the American green crab spider (104), ahead of the whitebanded crab spider (55).

American green crab spiderMisumessus oblongus104 records in MD

Whitebanded crab spiderMisumenoides formosipes55 records in MD

Black-banded crab spiderSynema parvulum34 records in MD

Flower crab spiderMecaphesa asperata18 records in MD

Deadly ground crab spiderXysticus funestus8 records in MD

Nearctic white-striped running crab spiderPhilodromus rufus6 records in MD

Metallic crab spiderPhilodromus marxi4 records in MD

Goldenrod crab spiderMisumena vatia2 records in MD

Philodromus imbecilluson record in MD

Observation records of the American green crab spider in Maryland run mostly June through September, peaking in June; most licensed records come from Montgomery County, Frederick County and Baltimore County. Observation records of the whitebanded crab spider in Maryland run mostly June through September, peaking in September; most licensed records come from Prince George's County, Anne Arundel County and Frederick County. Observation records of the black-banded crab spider in Maryland run mostly April through September, peaking in May; most licensed records come from Montgomery County, Howard County and Baltimore County.

Cobweb spiders in Maryland

Cobweb spiders: twelve species are listed for Maryland, with 211 records (4% of the state's spider records). The most recorded is the common house spider (92), ahead of the triangulate bud spider (42).

Common house spiderParasteatoda tepidariorum92 records in MD

Triangulate bud spiderSteatoda triangulosa42 records in MD

Boreal combfootSteatoda borealis33 records in MD

Anelosimus studiosus9 records in MD

Lyric cobweaverYunohamella lyrica9 records in MD

Phylloneta pictipes9 records in MD

Spintharus flavidus9 records in MD

American dewdrop spiderArgyrodes elevatus3 records in MD

Horned parasitic cobweaverNeospintharus trigonum3 records in MD

Episinus amoenus1 record in MD

Twospotted cobweb spiderAsagena americana1 record in MD

False black widowSteatoda grossaon record in MD

Most licensed records of the common house spider in Maryland come from Montgomery County, Howard County and Baltimore County. Observation records of the triangulate bud spider in Maryland run mostly April through September, peaking in August; most licensed records come from Prince George's County, Baltimore County and Montgomery County. Most licensed records of the boreal combfoot in Maryland come from Montgomery County, Howard County and Baltimore County.

Funnel weavers and grass spiders in Maryland

Funnel weavers and grass spiders are a small part of the spider record here: two species with 0.5% of records between them. The most recorded is Barronopsis jeffersi (21), ahead of the barn funnel weaver (6).

Barronopsis jeffersi21 records in MD

Barn funnel weaverTegenaria domestica6 records in MD

Lynx spiders in Maryland

Lynx spiders are a small part of the spider record here: three species with 0.5% of records between them. The most recorded is the striped lynx spider (24), ahead of Oxyopes aglossus (4).

Striped lynx spiderOxyopes salticus24 records in MD

Oxyopes aglossus4 records in MD

Western lynx spiderOxyopes scalaris1 record in MD

Sheetweb and dwarf spiders in Maryland

Sheetweb and dwarf spiders are a small part of the spider record here: four species with 1% of records between them. The most recorded is the bowl and doily spider (50), ahead of the filmy dome spider (18).

Bowl and doily spiderFrontinella pyramitela50 records in MD

Filmy dome spiderNeriene radiata18 records in MD

Blacktailed red sheetweaverFlorinda coccinea16 records in MD

Northern long-toothed sheetweaverDrapetisca alteranda1 record in MD

Observation records of the bowl and doily spider in Maryland run mostly April through September, peaking in April; most licensed records come from Montgomery County, Howard County and Frederick County.

Ground and sac spiders in Maryland

Ground and sac spiders: twelve species are listed for Maryland, with 177 records (3% of the state's spider records). The most recorded is the parson spider (53), ahead of the garden ghost spider (36).

Parson spiderHerpyllus ecclesiasticus53 records in MD

Garden ghost spiderHibana gracilis36 records in MD

Broad-faced sac spiderTrachelas tranquillus34 records in MD

Variegated ground spiderSergiolus capulatus15 records in MD

Wulfila albens13 records in MD

White sac spiderElaver excepta9 records in MD

Two-lined stealthy ground spiderCesonia bilineata6 records in MD

Northern yellow sac spiderCheiracanthium mildei4 records in MD

Lupettiana mordax2 records in MD

Strotarchus piscatorius2 records in MD

Twobanded antmimicCastianeira cingulata2 records in MD

Long-palped ant-mimic sac spiderCastianeira longipalpa1 record in MD

Observation records of the parson spider in Maryland run mostly January through September, peaking in August; most licensed records come from Montgomery County, Anne Arundel County and Baltimore County. Observation records of the garden ghost spider in Maryland run mostly March through November, peaking in May; most licensed records come from Prince George's County, Montgomery County and Howard County. Observation records of the broad-faced sac spider in Maryland run mostly April through October, peaking in October; most licensed records come from Montgomery County, Prince George's County and Harford County.

Other spiders in Maryland

Other spiders are a small part of the spider record here: 13 species with 3% of records between them. The most recorded is Dysdera crocata (38), ahead of the longbodied cellar spider (22).

Dysdera crocata38 records in MD

Longbodied cellar spiderPholcus phalangioides22 records in MD

Black laceweaverAmaurobius ferox21 records in MD

Pholcus manueli13 records in MD

Ariadna bicolor12 records in MD

Red-legged purseweb spiderSphodros rufipes11 records in MD

Featherlegged orbweaverUloborus glomosus9 records in MD

Black purse-web spiderSphodros niger7 records in MD

Ray spiderTheridiosoma gemmosum7 records in MD

Spermophora senoculata7 records in MD

Spitting spiderScytodes thoracica1 record in MD

Audouin's trapdoor spiderUmmidia audouinion record in MD

Plus one: Marbled cellar spider.

Observation records of Dysdera crocata in Maryland run mostly February through October, peaking in March; most licensed records come from Montgomery County, Baltimore County and Prince George's County.

Where in Maryland are spiders recorded most?

Montgomery County leads with 1,232 records (22%), followed by Prince George's County and Frederick County; the top five counties hold 69% of the total. 23 of Maryland's 23 counties have at least one licensed spider record.

Source: GBIF licensed records by county (GADM level 2), read 2026-09-29. Counties with many records often have active naturalists or a museum nearby.
#	County	Records	Share
1	Montgomery County	1,232	21.7%
2	Prince George's County	877	15.4%
3	Frederick County	647	11.4%
4	Baltimore County	600	10.6%
5	Howard County	536	9.4%
6	Anne Arundel County	463	8.2%
7	Harford County	310	5.5%
8	Carroll County	152	2.7%
9	Worcester County	148	2.6%
10	Garrett County	99	1.7%
11	Calvert County	97	1.7%
12	Washington County	89	1.6%

When do spiders come out in Maryland?

Observation records of spiders in Maryland run mostly April through October, peaking in August with 16% of them. Winter (December to February) holds 3% of the records. The sharpest rise comes from April to May.

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1%	1%	4%	8%	14%	16%	13%	16%	15%	8%	2%	1%

Spiders: Maryland compared with its neighbors

Maryland ranks 17th of 50 states by the number of spider species listed; Texas leads with 386 species.

Of the four states bordering Maryland, Virginia and Pennsylvania list more spider species (Maryland: 153 species; Virginia 176, Pennsylvania 164, West Virginia 90, Delaware 71).

What spiders are in Maryland? All 153 species

Ranked by licensed records in Maryland. The table shows the 60 most recorded of 153 listed spiders.

Source: GBIF occurrence records (CC0, CC BY) located in Maryland, read 2026-09-29. Share = part of all licensed spiders records in the state.
#	Species	Family	Records	Share
1	Orchard orbweaver Leucauge venusta	Tetragnathidae	384	6.8%
2	Bold jumper Phidippus audax	Salticidae	273	4.8%
3	Familiar jumping spider Platycryptus undatus	Salticidae	257	4.5%
4	Dark fishing spider Dolomedes tenebrosus	Pisauridae	225	4.0%
5	Nursery web spider Pisaurina mira	Pisauridae	222	3.9%
6	Spined micrathena Micrathena gracilis	Araneidae	183	3.2%
7	Black-and-yellow argiope Argiope aurantia	Araneidae	175	3.1%
8	Paraphidippus aurantius	Salticidae	161	2.8%
9	Arrowhead orbweaver Verrucosa arenata	Araneidae	156	2.7%
10	Bronze jumper Eris militaris	Salticidae	149	2.6%
11	Spotted orbweaver Neoscona crucifera	Araneidae	133	2.3%
12	American green crab spider Misumessus oblongus	Thomisidae	104	1.8%
13	Marbled orbweaver Araneus marmoreus	Araneidae	99	1.7%
14	Magnolia green jumper Lyssomanes viridis	Salticidae	95	1.7%
15	Common house spider Parasteatoda tepidariorum	Theridiidae	92	1.6%
16	Sylvan jumping spider Colonus sylvanus	Salticidae	87	1.5%
17	Putnam's jumper Phidippus putnami	Salticidae	80	1.4%
18	Flea jumping spider Naphrys pulex	Salticidae	74	1.3%
19	Arabesque orbweaver Neoscona arabesca	Araneidae	70	1.2%
20	Basilica orbweaver Mecynogea lemniscata	Araneidae	66	1.2%
21	Rabid wolf spider Rabidosa rabida	Lycosidae	66	1.2%
22	Peppered jumper Pelegrina galathea	Salticidae	65	1.1%
23	White-banded fishing spider Dolomedes albineus	Pisauridae	63	1.1%
24	Labyrinth orbweaver Metepeira labyrinthea	Araneidae	60	1.1%
25	Wetland giant wolf spider Tigrosa helluo	Lycosidae	59	1.0%
26	Furrow orbweaver Larinioides cornutus	Araneidae	57	1.0%
27	Whitebanded crab spider Misumenoides formosipes	Thomisidae	55	1.0%
28	White-jawed jumping spider Hentzia mitrata	Salticidae	54	1.0%
29	Brilliant jumping spider Phidippus clarus	Salticidae	53	0.9%
30	Parson spider Herpyllus ecclesiasticus	Gnaphosidae	53	0.9%
31	Grayish jumping spider Phidippus princeps	Salticidae	52	0.9%
32	Bowl and doily spider Frontinella pyramitela	Linyphiidae	50	0.9%
33	Ribbon jumping spider Metacyrba taeniola	Salticidae	49	0.9%
34	Butterfly orbweaver Araneus pegnia	Araneidae	48	0.8%
35	Sixspotted fishing spider Dolomedes triton	Pisauridae	48	0.8%
36	Dimorphic jumper Maevia inclemens	Salticidae	47	0.8%
37	Arrowshaped micrathena Micrathena sagittata	Araneidae	45	0.8%
38	Triangulate bud spider Steatoda triangulosa	Theridiidae	42	0.7%
39	White micrathena Micrathena mitrata	Araneidae	40	0.7%
40	Dysdera crocata	Dysderidae	38	0.7%
41	Northern black widow venomous Latrodectus variolus	Theridiidae	37	0.7%
42	Garden ghost spider Hibana gracilis	Anyphaenidae	36	0.6%
43	Black-banded crab spider Synema parvulum	Thomisidae	34	0.6%
44	Broad-faced sac spider Trachelas tranquillus	Trachelidae	34	0.6%
45	Boreal combfoot Steatoda borealis	Theridiidae	33	0.6%
46	Cone-shaped orbweaver Cyclosa conica	Araneidae	33	0.6%
47	Georgia wolf spider Tigrosa georgicola	Lycosidae	29	0.5%
48	Zebra spider Salticus scenicus	Salticidae	28	0.5%
49	Banded fishing spider Dolomedes vittatus	Pisauridae	27	0.5%
50	Banded garden spider Argiope trifasciata	Araneidae	27	0.5%
51	Cyclosa turbinata	Araneidae	25	0.4%
52	Lattice orbweaver Araneus thaddeus	Araneidae	25	0.4%
53	Southern black widow venomous Latrodectus mactans	Theridiidae	25	0.4%
54	Striped lynx spider Oxyopes salticus	Oxyopidae	24	0.4%
55	Canopy jumping spider Phidippus otiosus	Salticidae	23	0.4%
56	Red-femured spotted orbweaver Neoscona domiciliorum	Araneidae	23	0.4%
57	Sixspotted orbweaver Araniella displicata	Araneidae	23	0.4%
58	Longbodied cellar spider Pholcus phalangioides	Pholcidae	22	0.4%
59	Barronopsis jeffersi	Agelenidae	21	0.4%
60	Black laceweaver Amaurobius ferox	Amaurobiidae	21	0.4%

Venomous species in Maryland Snakes of Maryland Spiders in Delaware Spiders in Pennsylvania Spiders in Virginia

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 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.