. Bulletin of the Natural History Museum Zoology. 168 S. OHTSUKA, BOXSHALL AND ROE. Ps V _P£_ TT M1, PI M2 / / V a or b "*" 1 Jl Ma V Fig. 42. Schematic comparison of patterns of segmentation and setation of female fifth legs in some arietellids. The arrows indicate possible derivations of setation and segmentation patterns and are not indicative of ancestor-descendant relationships between taxa. Ap: Arietellus pavoninus; As: A. sp.; Am: A. mohri; Ps: Paraugaptilus similis; Sa: Sarsarietellus abyssalis; Pj: Paramisophria japonica; Pi: P. itoi; Pp: P. platysoma; Pg: P. gis
. Bulletin of the Natural History Museum Zoology. 168 S. OHTSUKA, BOXSHALL AND ROE. Ps V _P£_ TT M1, PI M2 / / V a or b "*" 1 Jl Ma V Fig. 42. Schematic comparison of patterns of segmentation and setation of female fifth legs in some arietellids. The arrows indicate possible derivations of setation and segmentation patterns and are not indicative of ancestor-descendant relationships between taxa. Ap: Arietellus pavoninus; As: A. sp.; Am: A. mohri; Ps: Paraugaptilus similis; Sa: Sarsarietellus abyssalis; Pj: Paramisophria japonica; Pi: P. itoi; Pp: P. platysoma; Pg: P. giselae; Pr: P. reducta; Ch: Crassarietellus huysi; Ml: Metacalanus species 1; M2: M. species 2; Ma: M. acutioperculum; PI: Pilarella longicornis. C: Coxa; B (in Ch): Basis; Is: Intercoxal sclerite; Ex: Exopod; En: Endopod. A-D (in Sa): setae on endopod; a-f: spines on exopod. third exopod segment of the right leg is 3 in Campaneria, 2 in Paraugaptiloides, Arietellus and Paraugaptilus, and 1 in Meta- calanus; on the left leg it is 3 in Campaneria and Arietellus and 1 in Metacalanus. The distal two exopodal segments are separate in both legs in Paraugaptiloides, Paramisophria and Metacalanus, and fused in both legs of Campaneria and Paraugaptilus and in the right leg only in Arietellus. The distal two segments of the right leg are missing in the only known male of Crassarietellus sp. The terminal and subterminal elements on the third exopodal segment of the left leg are heavily chitinized and almost fused to the segment only in Paraugaptiloides, Arietellus and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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