Conasprella (Conasprella) boholensis ( Petuch, 1979 )

Tenorio, Manuel J. & Puillandre, Nicolas, 2023, Revision of the deep-water cone snail fauna from New Caledonia (Gastropoda, Conoidea), European Journal of Taxonomy 896, pp. 1-134 : 45-47

Conasprella (Conasprella) boholensis ( Petuch, 1979)

Figs 2 , 32–33

Conus boholensis Petuch, 1979: 12 , figs 20–21.

Conus boholensis – R̂ckel et al. 1995b: no. 259, pl. 55 figs 22–27.

Endemoconus boholensis – Tucker & Tenorio 2013: 114.

Conasprella boholensis – Monnier et al. 2018a: 195.

Material examined

51 lots (135 specimens). See Supp. file 1.

Type material

Holotype PHILIPPINES • 38.5 mm; Bohol Island, off Panglao ; 250 m depth; DMNH 126400 ( Fig. 32A ).

Figured material

NEW CALEDONIA • 29.4 mm; east coast, off New Caledonia, stn CP707; 21°43′ S, 166°36′ E; 347‒375 m depth; 19 Mar. 1993; BATHUS 1 expedition; MNHN ( Fig. 32B ) • 22.8 mm; off E New Caledonia, east coast, stn CP702; 20°56′ S, 165°35′ E; 591‒660 m depth; 18 Mar. 1993; BATHUS 1 expedition; MNHN ( Fig. 32C ) • 23.4 mm; Grand Passage , off New Caledonia, stn DW902; 19°01′ S, 163°15′ E; 341‒351 m depth; 4 Aug. 1994; BATHUS 4 expedition; MNHN ( Fig. 32D ) • 19.5 mm; same collection data as for preceding; MNHN ( Fig. 32E ) • 24.5 mm; same collection data as for preceding; MNHN ( Fig. 32F ) • 28.2 mm; off New Caledonia, stn CC246; 22º08′ S, 167º11′ E; 410‒420 m depth; 3 Oct. 1985; MUSORSTOM 4 expedition; MNHN ( Fig. 32G, L ) • 19.6 mm; same collection data as for preceding; MNHN ( Fig. 32H ) • 21.2 mm; east coast, off New Caledonia, stn CP695; 20°35′ S, 164°58′ E; 410‒430 m depth; 17 Mar. 1993; BATHUS 1 expedition; MNHN ( Fig. 32I ) • 21.1 mm; same collection data as for preceding; MNHN ( Fig. 32J ) • 16.5 mm; same collection data as for preceding; MNHN ( Fig. 32K ) • 26.7 mm; Grand Passage , off N New Caledonia, stn DW2954; 19°02′ S, 163°18′ E; 250‒280 m depth; 1 May 2008; CONCALIS expedition; Atheris coll. ( Fig. 32M ) .

Geographical distribution and bathymetry

Philippines, S Vietnam, NW Australia at depths between 125‒ 300 m. In New Caledonia, Coral Sea and Loyalty Islands at depths between 300 and 500 m. Also present in Fiji at 282‒444 m ( Moolenbeek et al. 2008).

Remarks

Conical to ventricosely conical shell, moderately small to medium-sized (maximum shell length 51 mm), with a carinate and often nodulose shoulder, and a moderate to high, stepped spire. Multispiral protoconch of about 3 whorls ( Fig. 32L ). Radular tooth ( Fig. 32M ) with an indistinct barb and a pointed blade covering about one third of the anterior section, which is much shorter than the posterior section. Shaft fold present. Basal spur is present on top of the slanted base. The morphology of the shell and radular tooth of C. boholensis is very similar to that of Conasprella pagoda (Kiener, 1847) . In the phylogenetic analysis ( Fig. 2 ), both species form clades which are very close to each other. These two species can be difficult to separate based upon shell morphology. The shell of C. boholensis is usually more nodulose at the shoulder and exhibits radial threads on the teleoconch sutural ramp, whereas in C. pagoda the radial threads appear crossed by 4–6 major spiral cords.

Figures

Fig. 2. Cox1-based Bayesian phylogeny. Posterior probabilities (> 0.95) and bootstrap values (> 90) from the ML analysis are provided for each node. Intraspecific relationships are collapsed. Subgenus names are indicated on the right.

Fig. 32. Conasprella (Conasprella) boholensis (Petuch, 1979). A. Holotype, Bohol Island, off Panglao, Philippines, 250 m depth, 38.5 mm (DMNH 126400). B. East coast, off New Caledonia, 347‒375 m depth, 29.4 mm. C. East coast, off New Caledonia, 591‒660 m depth, 22.8 mm. D. Grand Passage, 341‒351 m depth, 23.4 mm. E. Same collection data as for specimen D, 19.5 mm. F. Same collection data as for specimen D, 24.5 mm.G. Off New Caledonia, 410‒420 m depth, 28.2 mm. H. Same collection data as for specimen G, 19.6 mm. I. East Coast, off New Caledonia, 410‒430 m depth, 21.2 mm. J. Same collection data as for specimen I, 21.1 mm. K. Same collection data as for specimen I, 16.5 mm. L. Protoconch of specimen G. M. Radular tooth of a specimen from Grand Passage, 250‒280 m depth, 26.7 mm (Atheris coll.). Scale bars = 10 mm, unless otherwise stated.

Fig. 33. Bathymetric range and distribution map for Conasprella (Conasprella) boholensis (Petuch, 1979). Red circles indicate the points where the species was collected.