Asterocheres suberitis Giesbrecht 1897

• Main Authors: Bandera, Eugenia, Conradi, Mercedes
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Siphonostomatoida; Asterocheridae; Asterocheres; Asterocheres suberitis; Seta; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/6221576; https://doi.org/10.5281/zenodo.6221576

Asterocheres suberitis Giesbrecht, 1897 (Fig. 1) Cyclopicera echinicola (nec Norman, 1868): Giesbrecht 1895: 175. Asterocheres suberitis Giesbrecht 1897: 254; Giesbrecht 1899: 70. Asterocheres echinicola (nec Norman, 1868): T. Scott 1898: 270; T. Scott 1900: 389; Norman & T. Scott 1906: 192. Asterocheres suberitis antarctica T. Scott 1903: 573. Material examined. 7 Ψ and 4 ɗ (ZMUC. CRU- 8298) cotypes, ex Suberites domuncula (Olivi), Gulf of Naples, leg. W. Giesbrecht in 1895. Redescription of adult female: Body (see Giesbrecht 1899: fig. 1, Taf. 2) cyclopiform, with oval prosome and cylindrical urosome. Total length 840 µm (n = 1); maximum width 420 µm. Ratio of length to width of prosome 1.1: 1. Ratio of length of prosome to urosome 1.6: 1. Prosome comprising cephalothorax fully incorporating first pedigerous somite and 3 free pedigerous somites. Pedigerous somite 4 much smaller and narrower than preceding somites. Dorsal cephalothoracic shield and free pedigerous somites ornamented with integumental pores and sensillae. Urosome 4 -segmented, comprising pedigerous somite 5, genital double-somite and 2 free abdominal somites. Genital double-somite about as long as wide; genital apertures separate, each comprising ventrolateral copulatory pore and dorsolateral gonopore (oviduct opening). Lateral margin of genital double-somite ornamented with setular rows posterior to genital apertures. Each genital area armed with seta. Caudal rami (see Giesbrecht 1899: fig. 7, Taf. 2) slightly more than 1.5 times longer than wide, armed with 6 setae (seta I absent); setae II–VII arranged along posterior margin. Antennule (see Giesbrecht 1899: fig. 2, Taf. 2) 21 -segmented, 360 µm long, with an aesthetasc on segment 18. Antenna (Fig. 1 A) biramous, 234 µm long (including claw); coxa and basis unarmed. Exopod 1 -segmented, slightly longer than wide, with small medial seta and 2 unequal terminal setae. Endopod 3 - segmented; first segment elongated, ornamented with lateral row of fine spinules; second segment asymmetric, ...