Pyrrhalta shirozui species group

Included species.

Pyrrhalta jungchani sp. nov.; P. lui sp. nov.; and P. shirozui Kimoto, 1969.

Diagnosis.

adults small to medium sized (3.3-6.8 mm). Antenna slender, antennomere III longest, V-X similar in size. Body convex. Elytra relatively wider for P. shorozui 1.5 × longer than wide (Fig. 38D-I), or relatively narrow for P. jungchani sp. nov. and P. lui sp. nov., 1.7-1.8 × longer and wide (Figs 38A-C, 41). Aedeagus asymmetric; ostium longitudinal, covered by a membrane or without cover; endophallic sclerites composed of two slender sclerites, with several teeth on apex of primary sclerite (Figs 39C, D, 42C, D, 43C, D). Ventrite VIII in females apically sclerotized, with dense, mixed short and long setae along apical margin; spiculum long (Figs 39E, 42E, 43F). Gonocoxae apically sclerotized, with dense, long setae on apices (Figs 39G, 42I, 43G). Apical margin of abdominal ventrite V slightly concave medially and with deep depression in males (Figs 39J, 42H, 43J); depression broadly rounded in females (Figs 39I, 42G, 43I). Mesotibia with apical spine in males of P. jungchani sp. nov. (Fig. 39F) and P. shirozui (Fig. 43E). Mesotarsi with tarsomere I modified in males of P. jungchani sp. nov. (Fig. 39H) and P. shirozui (Fig. 43K).

Biology.

Larvae and adults feed on leaves of Viburnum species ( Adoxaceae).