Chtenopteryx canariensis Salcedo-Vargas &, 2000

Escánez, Alejandro, Roura, Álvaro, Riera, Rodrigo, González, Ángel Francisco & Guerra, Ángel, 2018, New Data on the Systematics of Comb-fin Squids Chtenopteryx spp. (Cephalopoda: Chtenopterygidae) from the Canary Islands, Zoological Studies 57 (40), pp. 1-11 : 4-5

Chtenopteryx canariensis Salcedo-Vargas & Guerrero-Kommritz, 2000

( Fig. 2A, C )

Material examined: 2 specimens, Spain: Tenerife, Canary archipelago; TF10411512 South of Tenerife and OC1041412 North of Tenerife.

Description: T h e t w o C. canariensis specimens had an ML of 27 and 43 mm, with a weight of 2.4 and 13.8 g. Chtenopteryx canariensis is characterized by a wide mantle flattened from above and a fin almost equal to the ML, composed of muscular soft rays. Very similar externally to its congeners. Arm pairs I-II-III with 2 series of suckers proximally, 8 series of suckers in the central part of arm and 8 to 10 suckers distally. Arms IV with 2 series of zig-zag shaped suckers. Tentacular clubs with 6 series of suckers in the proximal part, 16- 18 sucker series in the central part of clubs, and 6-8 series of suckers in the distal part. Visceral photophore lacking. Elongated photophore on the ventral aspect of the eyeball present. Mantle width corresponds to 47 and 50% of the ML. Figure 2A shows the ventral view of 43 mm ML female. The ink sac lacks a photophore, as illustrated in figure 2C. The ventral eyeball photogenic tissue is shown in figure 3A. The diagnostic characters of the two studied specimens agree with those ones analysed by Salcedo-Vargas and Guerrero-Kommritz (2000).

Figures

Fig. 2. (A) Chtenopteryx canariensis, 43 mm ML female specimen captured in Canary Islands, ventral view. (B) Chtenopteryx sicula, 34 mm ML mature female captured in Canary Islands. (C) Ink sack of C. canariensis without visceral photophore. (D) Visceral photophore on ink sack of C. sicula.