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Species · Crustaceans

Masked Crab

Corystes cassivelaunus

3,495Records since 2000
JulyPeak month
27Counties with records

When it is recorded

Jan30
Feb28
Mar86
Apr163
May273
Jun679
Jul1,379
Aug278
Sep434
Oct30
Nov19
Dec21

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Torbay England25
2Sefton England22
3Devon England9
4Isle of Anglesey Wales8
5Cornwall England6
6Pembrokeshire Wales5
7Gwynedd Wales4
8Ceredigion Wales4
9Aberdeen City Scotland4
10Causeway Coast and Glens Northern Ireland4
11East Riding of Yorkshire England3
12Swansea Wales3
13Cambridgeshire England2
14Norfolk England2
15Kent England2
427 England52 Scotland217 Wales77 Northern Ireland1 Isle of Man

Records per county (GADM level 2) and per nation; one record can count towards several areas. 27 counties in all.

About this species

Records since 2000
3,495
Peak month
July
Counties with records
27
Scientific name
Corystes cassivelaunus
Group
Crustaceans
NBN Atlas records since 2000
1,921
Kingdom
Animalia
Phylum
Arthropoda
Class
Malacostraca
Order
Decapoda
Family
Corystidae
Genus
Corystes
Name with authority
Corystes cassivelaunus (Pennant, 1777)
Described
1777
Contributing datasets
61

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q2710027 · GBIF 5716132