FIGURE 2 in Antennal ultrastructure of Leptidea Billberg, 1820 (Pieridae: Dismorphiinae: Leptideini) and its taxonomic implications

FIGURE 2 (a–d). a. Antennal club and non-scaleless antennomeres of Leptidea sinapis ♀ (x100); the central sulci that form a continuum, and the lateral ones are exhibited. b. Distal antennomere of Leptidea amurensis amurensis ♀ (x320); we observed two central sulci, which show two fused flagellomeres. c. Trichoid sensilla and microtrichia (m) in Leptidea amurensis japona ♂ (x5.50 k). d. Chaetic sensilla in L. amurensis amurensis ♂ (x4.50 k), surrounded by microtrichia (m).