Boninpagurus Asakura & Tachikawa, 2004
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https://doi.org/ 10.5281/zenodo.202569 |
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https://doi.org/10.5281/zenodo.5667729 |
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persistent identifier |
https://treatment.plazi.org/id/7E718793-8579-FFCB-FF56-FF21FC60FABB |
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Plazi |
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scientific name |
Boninpagurus Asakura & Tachikawa, 2004 |
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Genus Boninpagurus Asakura & Tachikawa, 2004 View in CoL
[New Japanese name: Okinawa-akashima-hon-yadokari-zoku]
Boninpagurus Asakura & Tachikawa, 2004: 157 View in CoL .
Type species. Boninpagurus acanthocheles Asakura & Tachikawa, 2004 [= Boninpagurus pilosipes (Stimpson, 1858) , n. comb]. Original designation.
Emended diagnosis. Eleven pairs of biserial phyllobranchiate gills, including 2 pairs of arthrobranchiae above bases of third maxilliped to fourth pereopod and 1 pleurobranch on seventh thoracic somite (above base of fourth pereopod). Rostrum ( Fig. 2 View FIGURE 2 A) broadly triangular, not particularly developed. Ocular acicles ( Fig. 2 View FIGURE 2 A) each with submarginal spine. Antennal peduncle ( Fig. 2 View FIGURE 2 A) with supernumerary segmentation; acicles well developed. Maxillule with produced external lobe on endopod ( Fig. 2 View FIGURE 2 B). Third maxilliped with well developed crista dentata consisting of fine row of corneous teeth and accessory tooth on ischium ( Fig. 2 View FIGURE 2 D). Chelipeds distinctly unequal with right longer and stouter than left ( Figs 1 View FIGURE 1 A–C, 3, 4A, C). Second and third pereopods generally similar ( Figs 1 View FIGURE 1 A–C, 4D, E). Fourth pereopods semichelate, lacking preungual process on dactylus; propodal rasp of more than 2 rows of corneous scales ( Fig. 2 View FIGURE 2 E). Fifth pereopods chelate. Coxa of right fifth pereopod in male bearing sexual tube of medium length, directed laterally or posterolaterally ( Fig. 2 View FIGURE 2 G, H, L); coxa of left fifth pereopod with short protrusion of vas deferens ( Fig. 2 View FIGURE 2 J). Female with paired gonopores. Male pleon with 3 unequally biramous left pleopods; female pleon with 4 unequally biramous left pleopods. Telson ( Fig. 2 View FIGURE 2 K) with lateral indentations; posterior lobes separated by median cleft, left larger; terminal margins oblique, each with spines.
Remarks. The original generic diagnosis of Boninpagurus given by Asakura & Tachikawa (2004) contains a few minor discrepancies or inconsistencies, and therefore is slightly emended herewith. The rostrum was described as “well developed”, but examination of the present series of specimens has shown that the rostrum is usually broadly triangular, not showing particular development. The original authors stated that the propodal-carpal articulation of the left cheliped was rotated counter-clockwise 30° from the horizontal plane, but we found no particular degree of rotation in our specimens.
As noted above, males of the newly collected specimens from Okinawa Islands have the right sexual tube of a medium length (about 5.0 times of the coxal length; see Fig. 2 View FIGURE 2 C). In every diagnostic aspect, Pagurus pilosipes agrees with the diagnosis of Boninpagurus given by Asakura & Tachikawa (2004), and thus the species is herein transferred to Boninpagurus . As dicussed below, conspecificity between B. pilosipes and B. acanthocheles is strongly supported by comparisons of morphology and barcoding gene.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Boninpagurus Asakura & Tachikawa, 2004
| Komai, Tomoyuki, Yang, Chien-Hui, Okuno, Junji & Chan, Tin-Yam 2011 |
Boninpagurus
| Asakura 2004: 157 |