Bactrochondria papilla, Ho, Kim I.H. & Kumar, 2000
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publication ID |
https://doi.org/10.1080/002229300299372 |
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DOI |
https://doi.org/10.5281/zenodo.10237819 |
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persistent identifier |
https://treatment.plazi.org/id/7A57A021-FFA3-FF80-FEA9-FC0351FCFA0C |
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treatment provided by |
Carolina |
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scientific name |
Bactrochondria papilla |
| status |
sp. nov. |
Bactrochondria papilla sp. nov.
( figures 3-4 View FIG View FIG )
Material examined. Twenty-seven adult ♀♀ (each with attached ♂) found on gill fi laments of Cynoglossus dubius (Regan) : eight collected on 14.ii.1994 and 19 collected on 20 July 1994. Holotype ( USNM 285492 About USNM ) and ten paratypes ( USNM 285493 About USNM ) have been deposited in the US National Museum of Natural History, Smithsonian Institution, Washington, DC, and the remaining paratypes and other specimens kept in the author’s ( IHK) collection.
Female. Body ( figure 3A View FIG ) greatly elongated and cylindrical, 2.52-4.56 mm long and 0.37-0.52 mm wide. Head ( figure 3B View FIG ) longer than wide, 0.60✕ 0.37 mm (not including inflated antennule), with prominent cephalic process (a swollen base tipped with a nipple-like protrusion) at each anterolateral corner ( figures 3C, F View FIG ). Neck region formed by first pediger, remaining prosomal somites fused into a long, cylindrical trunk. Genital double somite indistinguishably fused to trunk ( figures 3A,D View FIG ), carrying a central vermiform process on ventral side. Abdomen like a narrow ring attached to genital double somite ( figure 3D View FIG ). Caudal ramus ( figure 3D View FIG ) a pointed spiniform process carrying three setae and one tubercle. Longest egg sac 8.64 mm long, nearly twice as long as its body length.
Antennule ( figure 3E View FIG ) with inflated base and cylindrical tip; armature being (from proximal to distal) 1-1-2-1-7. Antenna ( figure 3F View FIG ) two-segmented; terminal segment an uncinate hook. Labrum ( figure 3G View FIG ) with smooth posterior margin. Mandible ( figure 3H View FIG ) two-segmented; terminal blade with 21 to 27 teeth on convex (inner) side and 12 to 16 teeth on convex (outer) side. Maxillule ( figure 3I View FIG ) with three blunt, terminal setae. Maxilla ( figure 3J View FIG ) two-segmented; first segment robust but unarmed; second segment bearing one small, simple, basal seta, one large seta with hyaline tip and a row of seven to nine teeth along inner edge of terminal process. Maxilliped ( figure 4A View FIG ) three-segmented; first segment largest but unarmed, second segment expanded distally with enlarged inner corner armed with two patches of denticles, and terminal segment reduced to a small claw attached to non-swollen outer distal corner of second segment. Leg 1 ( figure 4B View FIG ) with greatly enlarged, process-like protopod carrying an outer basal seta and much reduced, knob-like rami. Endopod unarmed, but exopod tipped with five short setae, four terminal and one subterminal. Leg 2 ( figure 4C View FIG ) biramous; protopod largely fused to trunk and only identi fi able by its outer, basal seta. Both rami rod-like, with exopod larger than endopod and tipped with four short setae, three terminal and one subterminal.
Male. Body ( figure 4D View FIG ) 388 μ m long, cephalosome moderately swollen. Genital somite ( figure 4E View FIG ) with prominent ventrolateral ridges but abdomen small and indistinct. Caudal ramus ( figure 4E View FIG ) a spiniform process bearing a medial seta and a ventral tubercle at base. Antennule ( figure 4F View FIG ) elongate and cylindrical, with terminal portion set off in a posteroventrally directed knob; armature being 1-1-1- 2-8. Antenna ( figure 4G View FIG ) a strongly recurved hook bearing an inner setule. Mandible ( figure 4H View FIG ) with fewer teeth on terminal blade, 14 on convex side and seven to eight or concave side. Paragnath ( figure 4I View FIG ) a spinulose lobe. Maxillule ( figure 4J View FIG ) with two terminal elements. Maxilla ( figure 4K View FIG ) with seven teeth on inner surface of terminal process. Maxilliped ( figure 4L View FIG ) with much reduced, terminal claw visible in lateral view only ( figure 4M View FIG ). Leg 1 ( figure 4N View FIG ) reduced to a seta and a tiny knob tipped with two setules and a small tubercle, or only two setules ( figure 4O View FIG ).
Etymology. The speci fi c name papilla is Latin (= nipple, teat, bud), it refers to the reduction of the endopod on leg 2 to a bud-like structure.
Remarks. The new species can be distinguished from its two congeners by the following three characters View Table :
Since Yamaguti (1939) failed to describe the fi ne structures of B. longitruncus , it is impossible to point out if there are further differences among these three species. However, more differences from B. hoi are given after the redescription of that species.
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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