Hymenocephalus barbatulus Gilbert & Hubbs, 1920

Schwarzhans, Werner, 2014, Head and otolith morphology of the genera Hymenocephalus, Hymenogadus and Spicomacrurus (Macrouridae), with the description of three new species, Zootaxa 3888 (1), pp. 1-73 : 35

Hymenocephalus barbatulus Gilbert & Hubbs, 1920

Figs. 14A–B , 16

Hymenocephalus (Papyrocephalus) barbatulus Gilbert & Hubbs, 1920: 539 (type locality: 07°35’S, 126°38’E).

Discussion. Hymenocephalus barbatulus was described based on the holotype and one paratype from the same location off eastern Mindanao, Philippines, from 695 m. It differs from the other species in the aterrimus Group in the low pelvic and pectoral fin ray counts (7 and 10). Neither holotype nor paratype was located in the collection of USNM. According to information provided by S. Raredon (USNM) they were last checked in 1980. The figures shown are copies of the original drawing by Gilbert & Hubbs (1920: fig. 34) ( Fig. 14A ) and a secondary drawing in Cohen et al. (1990: fig. 511) ( Fig. 14B ); both depict an overall head morphology similar to that of H. aterrimus .

Figures

FIGURE 14. A–B: Hymenocephalus barbatulus: A—Figure from Gilbert & Hubbs (1920). B—Figure from Cohen et al. (1990). C–E: Hymenocephalus nesaeae: Holotype, MNHN 1995-0869, C—Lateral view of head, D—Dorsal view of head, E—inner face of otolith. F–J: Hymenocephalus papyraceus: F—BSKU 099483, lateral view of head, G—Holotype, USNM 50935, lateral view of head, H—BSKU 099483, dorsal view of head, I—BSKU 44761, inner face of otolith, J—BSKU 44761, ventral view of otolith.

FIGURE 16. Geographical distribution of Hymenocephalus aterrimus, H. barbatulus, H. nesaeae, H. papyraceus and H. sazonovi.