Belkginoecetes springthorpei, Just, Jean, 2012
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publication ID |
https://doi.org/ 10.5281/zenodo.282760 |
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DOI |
https://doi.org/10.5281/zenodo.6181057 |
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persistent identifier |
https://treatment.plazi.org/id/03CB230B-FFBD-FFAC-FF08-5BCBE4F1F983 |
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treatment provided by |
Plazi |
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scientific name |
Belkginoecetes springthorpei |
| status |
sp. nov. |
Belkginoecetes springthorpei View in CoL sp. nov.
Figures 4–5 View FIGURE 4 View FIGURE 5
Type fixation. Holotype, male, here designated.
Etymology. The species is named for my friend Roger T. Springthorpe, Technical Officer, Marine Invertebrates, Australian Museum, who shared this somewhat unpleasant dive with me, and assisted me up and down the coast of Queensland.
Material examined. Holotype, 3, 3.3 mm, Airlie Beach, Queensland, Australia, 20°16’S, 148°43’E, 2 m (LW), fine detrital mud with some content of foraminifera and small shell fragments, hand dredge, J. Just, R.T. Springthorpe, stn AU40, 23 July 1984, QM W29155.
Paratypes. Same data as holotype, QM W29156 (ƤA, ovigerous). Same data as holotype, QM W29157 (23 specimens, various sizes, 16 abodes, 5 occupied).
Description (holotype, 3). Head as long as pereonites 1 and 2 combined along dorsal midline. Rostrum nearly straight, slightly down curved at apex, acutely pointed; in dorsal view reaching beyond apices of eye lobes with about half its length. Eye lobes rounded in lateral view, lower anterior margin with single simple seta.
Antenna 1 approximately as long as head and pereonites 1–5 combined, reaching to apex of antenna 2 peduncle article 4; flagellum of 6+ articles, approximately as long as peduncle articles 2 and 3 and half of 1 combined. Antenna 2 slightly longer than entire body from head to telson ; ventral projection of peduncle article 2 base width 2/3 greatest length, tapering, rounded distally, with fringe of long setae laterally and apically; articles 3–5 with many dorsal, ventral and ventrolateral groups of short simple setae; article 5 length 0.88 of 4; flagellum articles 1 and 2 robust setae shorter than or slightly longer that flagellar width.
Mouthparts, mandible palp article 1 with 2 dorsal, 2 ventral and 2 apical long setae.
Gnathopod 1 propodus length 3.2 width, with 3 midposterior robust setae. Gnathopod 2 propodus length 1.9 greatest width. Pereopods 3–4 basis with open row of long setae on anterior margin, a few long setae on lateral surface and on midposterior margin; merus with single midanterior group of long setae, with groups of long setae along posterior margin. Pereopods 5–6 basis with row of long setae along distal half of anterior margin, posterior margins with a few unequally long setae.
Uropod 1 peduncle with 2 small dorsolateral robust setae; outer ramus 4 times longer than wide, approximately 0.5 length of peduncle, lateral margin with 2 robust setae, submedially with single dorsal simple seta; inner ramus 0.9 length of outer ramus, slightly tapering towards apex. Uropod 3 reaching beyond telson with 1/3 its length, distolaterally with 2 long simple setae, mediodistally with 2 short simple setae. Telson of equal width and length, apex broadly convex.
Female. Uropod 1 peduncle and outer ramus with many more robust setae than in male ( Fig. 5 View FIGURE 5 Fus), number of setae increasing with size of specimen. Pereonite 7 ventrally with short, broadly rounded sternal papillae ( Fig. 5 View FIGURE 5 Fsp).
Size. Largest 3, 3.3 mm; largest Ƥ (ovigerous), 3.2 mm.
Colour and biology. Body faintly brownish to light sandy mottled. In larger specimens pereonite 1 with brown bar across dorsally extending onto coxal plate 1, also on coxal plate 2. Eyes white with black ocelles. Frons creamwhite; upper lip purple-brown. Antenna 1 faintly purple-brown. Antenna 2 flagellum colourless, peduncle whitesandy-mottled, article 4 with proximal purple brown ring. Specimens occupy microprosobranch shells and occasionally polychaete tubes.
Distribution. Airlie Beach, Queensland, Eastern Australia, 2 m.
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.