Megacanthaspis hangzhouensis Wei & Feng

Adult female. Appearance in life not recorded. Slide-mounted adult female 552–617 μm long (holotype 598 μm long); 309-362 μm wide (holotype 337 μm wide), body outline oblong oval, with indistinct segmentation. Cephalothorax. Antennae each with a long seta and a tubercle. Anterior spiracles with 1-2 trilocular pores, pores absent from posterior spiracles. Pygidium marginal processes degenerate. Pygidial lobes absent, without paraphyses and plates. Marginal gland spines each 14-19 μm long, in 6 pairs on abdominal V-VIII, 1 pair on abdominal segments VII and VIII and 2 pairs on abdominal segments V and VI, each associated with 1 microduct; posteriormost median pair of gland spines widely separated. Gland tubercles absent. Dorsal macroducts forming obscure segmental rows and not obviously divided into marginal, submarginal and submedial groups, with about 17 on each side; without marginal dorsal macroducts at apex of pygidium between the posteriormost gland spines. Ventral microduct is smaller than dorsal macroduct, few, scattered on cephalothorqx and abdomen, with 4 or 5 near each anterior and posterior spiracles. Anal opening separated from apex of pygidium by a space about 82 μm long. Perivulvar pores present in an arc, divided in 5 groups, 4–7 median group, 5–8 anterolaterally, and 7–10 posterolaterally, 28–43 in total.

China (Zhejiang).