Fig. 2From: Reduction of a nymphal instar in a dampwood termite: heterochronic shift in the caste differentiation pathwaysMorphological and histological transitions during nymphal instars in Z. nevadensis (a–i) and H. sjostedti (j–r). Developmental processes of nymphal instars are divided into three stages: N1 (first-instar nymph; a, d, g), N2E (early second-instar nymph; b, e, h) and N2L (late second-instar nymph; c, f, i) in Z. nevadensis; and NE (early nymph; j, m, p), NM (mid-nymph; k, n, q), and NL (late nymph; l, o, r) in H. sjostedti. Arrowheads indicate epithelial tissues of developing wings. All scale bars indicate 500 µmBack to article page