FIGURES 19–23 in Nymphal development of Rhopalus maculatus and Chorosoma schillingii (Hemiptera: Heteroptera: Rhopalidae: Rhopalinae) and development of trichobothrial pattern in Rhopalidae

FIGURES 19–23. Rhopalus maculatus, nymphal instars (ventral view of abdomen; right half of figure = natural left side of body, with real chaetotaxy except trichobothria, only their alveoles illustrated as open circle; left half of figure only with symbols illustrating trichobothrial pattern): (19) 1st instar. (20) 2nd instar. (21) 3rd instar. (22) 4th instar. (23) 5th instar. Scale bars: 19–21 = 0.5 mm, 22, 23 = 1.0 mm. Lettering: II–VII, abdominal segments; Fs, flattened seta; Sp, spiraculum; Tp, thorn-shaped process; solid circle and short seta, precursor seta; open circle and short seta, short trichobothrium; open circle and long seta, long trichobothrium; black, distinctly pigmented structure.