Headlight Swallowtail
Mariaglaja inornata
- Usual depth3–15 m
- Water temperature19–30 °C
- Best monthsOctober, November, and December
- How commonOccasional
About this species
Mariaglaja inornata, also called the inornate headshield slug, is a species of sea slug or headshield slug, a marine opisthobranch gastropod mollusc in the family Aglajidae.
Text from the Wikipedia article “Mariaglaja inornata”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 8 records
- February: 12 records
- March: 8 records
- April: 16 records
- May: 13 records
- June: 12 records
- July: 12 records
- August: 8 records
- September: 11 records
- October: 24 records
- November: 21 records
- December: 19 records
Depth and water temperature
Depth
Mostly recorded at 3–15 m · Deepest record: 33.2 m
Water temperature
Recorded in surface water of 19–30 °C
Names and classification
- English
- Headlight Swallowtail, Headband Headshield Slug
Names in 2 more languages
- French
- Chélidonure sans ornement
- Japanese
- オハグロツバメガイ
Other scientific names: Chelidonura inornata
Similar species
Variable SwallowtailMariaglaja tsurugensis
Lovely Headshield SlugChelidonura amoena
T-bar SwallowtailChelidonura hirundinina
Beautiful SwallowtailPhilinopsis speciosa
Speckled Swallow-tailed Sea SlugBiuve fulvipunctata
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).
- 168 open-data records from 1956 to 2026.
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