Diloma aridum
- Usual depth0–1 m
- Water temperature9–18 °C
- Best monthsJanuary, April, and December
- How commonRare
Photo credit: (c) wild_wind, some rights reserved (CC BY), uploaded by wild_wind · CC BY · iNaturalist
About this species
Diloma aridum is a species of small sea snail, a marine gastropod mollusc in the family Trochidae. This species is a part of the broader genus Diloma that engrosses other marine gastropods like Diloma aethiops and Diloma bicanaliculatum.
Text from the Wikipedia article “Diloma aridum”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 29 records
- February: 12 records
- March: 24 records
- April: 35 records
- May: 17 records
- June: 19 records
- July: 18 records
- August: 13 records
- September: 11 records
- October: 10 records
- November: 11 records
- December: 30 records
Depth and water temperature
Depth
Mostly recorded at 0–1 m · Deepest record: 14 m
Water temperature
Recorded in surface water of 9–18 °C
Photos
(c) wild_wind, some rights reserved (CC BY), uploaded by wild_wind · CC BY · iNaturalist 
(c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist 
(c) Auckland War Memorial Museum, some rights reserved (CC BY), uploaded by Auckland War Memorial Museum · CC BY · iNaturalist 
(c) Emily Roberts, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Emily Roberts, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Kelvin Perrie, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Kelvin Perrie, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
Other scientific names: Diloma arida, Zediloma arida
Similar species
Scorched monodontDiloma aethiops
Speckled PeriwinkleDiloma concameratum
Mudflat Top ShellDiloma subrostratum
Knobbed Top SnailDiloma bicanaliculatum
Bluish Top ShellDiloma nigerrimum
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 385 open-data records from 1943 to 2011.
- Species data updated November 2, 2026.
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