Figure 5.Other appendages of Acanthoniscus richardsonae sp. nov. A, Second antenna; B, detail of flagellum of second antenna depicting position of aesthetasc groups (small arrows); C, detail of the distal article of the flagellum of the second antenna slightly turned over showing the aesthetasc groups; D, detail of the distal-most portion of the flagellum of the second antenna showing the apical cone; E, first antenna; F, detail of the third article of the first antenna showing the aesthetascs; G, male left seventh pereiopod; H, detail of ischium of male seventh pereiopod; I, detail of dactylus of male seventh pereiopod in anterior view; J, detail of dactylus of male seventh pereiopod in posterior view; K, male left first pereiopod, showing the areas on the carpus and propodus covered with the cleaning apparatus or antennal brush (dashed outlines); L, detail of carpus of male first pereiopod (anterior surface). Abbreviations: basis (bs), ischium (is), merus (me), carpus (ca), propodus (pr), flagellum (fl), and dactylus (da). Drawing of the corresponding structure modified from Richardson (1909) is included in A. Scale bars = 1 mm (A), 0.5 mm (G, K), 0.3 mm (B), 0.1 mm (C–E, H–J, L), 0.05 mm (F).