Philomedes orbicularis Brady 1907

• Main Authors: Chavtur, Vladimir G., Keyser, Dietmar
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Ostracoda; Myodocopida; Philomedidae; Philomedes; Philomedes orbicularis; Antarc*; Antarctic
• Online Access: https://doi.org/10.5281/zenodo.6069979; http://treatment.plazi.org/id/18659911FF80C905FF08B497FBF3FAF7

Philomedes orbicularis Brady, 1907 (Figs. 32, 33) 1907 Philomedes orbicularis Brady: 4, pl. 1: Figs. 1–3, 6–15. 1912 Philomedes orbicularis Brady, 1907 —Müller,: 26 [key], 33. 1971 Philomedes orbicularis Brady, 1907 —Kornicker: 191, Fig. 16. 1975 Philomedes orbicularis Brady, 1907 —Kornicker: 240–245, Figs. 131, 135 (map), 139–143; 1986 Philomedes orbicularis Brady, 1907 —Hartmann: 116–117. 1990 Philomedes orbicularis Brady, 1907 —Hartmann: 199. 1971 Philomedes trithrix Kornicker: 176, Figs. 6–12. 1988 Philomedes cf. P. orbicularis Brady, 1907 —Hartmann: 142–143. Studied material (coordinates, depth and sediment see Appendix). RV “Polarstern”, ANT XV/3 , station 148: ZMH-K-42268—adult female (2.65 mm). 52th Russian Antarctic Expedition, station 12, sample 60: MIMB 18309—immature female (2.27 mm) and MIMB 18310—immature male (2.32 mm). Station 12, sample 64: MIMB 18311—immature male (2.25 mm). Station 12, sample 65: MIMB 18 308—adult female (2.80 mm). Additional material . See Appendix. Diagnosis of female (Kornicker 1975, with additional remarks). Carapace : oval in lateral outline with minute caudal process often not visible in lateral view, surface with abundant short setules, length 2.27–2.80 mm. First antenna : 2nd joint with 3 setae, 1 ventral, 1 lateral and 1 dorsal. Second antenna : 1st joint of endopodite with 5 setae, 4 proximal and 1 distal; 2nd joint with 1 long and 1 short ventral setae and 1 long terminal seta. Mandible : dorsal margin of basale with 4–5 setae, 2–3 near middle and 2 subterminal. Sixth limb : epipodite with 3–4 setae. Seventh limb : each limb with 32–43 setae, 2 pegs present on opposite terminal comb. Caudal furca : each lamella with 11–13 claws, main claws short, stout, often with rounded tips. Bellonci organ : 2-jointed, with pointed tip. Lateral eye : minute, with 2–3 ommatidia or without well-defined ommatidia. Anterior process (above upper lip): developed, slightly curved and with rounded tip. Diagnosis of male. Carapace : length 2.45–2.71 mm. First antenna : 2nd joint with 3 ...