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bioRxiv · 10.1101/2025.08.07.669097

Confirmed Occurrence and Morphological Documentation of Stenopus spinosus (Risso, 1827), from Tenerife, Canary Islands

Bommerer, M. A.
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Abstract

This dataset provides photographic and morphological documentation of Stenopus spinosus Risso, 1827, based on a single adult specimen collected from Granadilla, Tenerife, Canary Islands, on 6 August 2025. The individual was observed and captured at a depth of 6 meters in a rocky overhead marine environment during a night dive, and subsequently documented through standardized dorsal-view laboratory imaging (Figures C-1 and D-1). Morphometric data were recorded, including carapace length (CL), rostrum length (RL), chela length and cheliped length. This record contributes to the regional documentation of marine decapods in the eastern Atlantic and supports ongoing biodiversity assessment efforts in the Canary Islands. Additionally, a separate in situ underwater observation of S. spinosus, recorded during a night dive in Jaca, Tenerife on 1 November 2024, is cited for comparative purposes. O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=142 SRC="FIGDIR/small/669097v1_figC_1.gif" ALT="Figure 1"> View larger version (32K): org.highwire.dtl.DTLVardef@d301aeorg.highwire.dtl.DTLVardef@1138166org.highwire.dtl.DTLVardef@1948eaaorg.highwire.dtl.DTLVardef@225a7b_HPS_FORMAT_FIGEXP M_FIG O_FLOATNOFigure C-1.C_FLOATNO Dorsal view of Stenopus spinosus Risso, 1827 (Decapoda: Stenopodidea: Stenopodidae), adult specimen (Specimen ID: IMS-SSP-001) collected from Granadilla, Tenerife, Canary Islands (28{degrees}05'07''N, 16{degrees}29'23''W). The individual was encountered at a depth of 6 meters in a rocky overhead marine environment during a night dive at approximately 01:00 local time on 6 August 2025. Photographed under standardized laboratory conditions. Morphometric measurements: carapace length (CL) = 16.4 mm; rostrum length (RL) = 11.1 mm; right chela length = 36.7 mm; right cheliped length = 94.3 mm. Scale bar = 10 mm. Associated iNaturalist record: https://www.inaturalist.org/observations/304303255 C_FIG O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=142 SRC="FIGDIR/small/669097v1_figD_1.gif" ALT="Figure 1"> View larger version (18K): org.highwire.dtl.DTLVardef@1627499org.highwire.dtl.DTLVardef@d4eea5org.highwire.dtl.DTLVardef@17fca75org.highwire.dtl.DTLVardef@c4cf46_HPS_FORMAT_FIGEXP M_FIG O_FLOATNOFigure D-1C_FLOATNO Complete dorsal view of Stenopus spinosus Risso, 1827 (Decapoda: Stenopodidea: Stenopodidae), adult specimen (Specimen ID: IMS-SSP-001) showing extended antennal appendages. Collected at a depth of 6 meters within a rocky overhead marine environment during a night dive (approx. 01:00 local time) on 6 August 2025. Locality: Granadilla, Tenerife, Canary Islands (28{degrees}05'07''N, 16{degrees}29'23''W). Photographed under standardized laboratory conditions. Morphometric measurements: carapace length (CL) = 16.4 mm; rostrum length (RL) = 11.1 mm; right chela length = 36.7 mm. Scale bar = 10 mm. C_FIG

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Bommerer, M. A.. 2025-08-10. Confirmed Occurrence and Morphological Documentation of Stenopus spinosus (Risso, 1827), from Tenerife, Canary Islands. https://doi.org/10.1101/2025.08.07.669097

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