Pyrrhalta shirozui species group

Lee, Chi-Feng & Bezdek, Jan, 2021, Revision of the genera Xanthogaleruca Laboissiere, 1932 and Pyrrhalta Joannis, 1865 (Coleoptera, Chrysomelidae, Galerucinae) of Taiwan, with type designation of Galerucella lineatipes Takei, ZooKeys 1039, pp. 1-108 : 1

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 ).

Figures

Figure 38. Habitus of Pyrrhalta jungchani sp. nov. and P. shirozui Kimoto A P. jungchani sp. nov., male, dorsal view B ditto, ventral view C ditto, lateral view D P. shirozui, female, dorsal view E ditto, ventral view F ditto, lateral view G Same species, color variation H Same species, color variation I Same species, color variation.

Figure 39. Diagnostic characters of Pyrrhalta jungchani sp. nov. A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E abdominal ventrite VIII F apex of tibia of middle leg, male G gonocoxae H tarsi of middle leg, male I abdominal ventrite V, female J abdominal ventrite V, male K spermatheca.

Figure 41. Habitus of Pyrrhalta lui sp. nov. A male, typical form, dorsal view B ditto, ventral view C ditto, lateral view D female, dorsal view E ditto, ventral view F male, color variation, dorsal view G ditto, ventral view H male, color variation, dorsal view I ditto, ventral view.

Figure 42. Diagnostic characters of Pyrrhalta lui sp. nov. A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E abdominal ventrite VIII F spermatheca G abdominal ventrite V, female H abdominal ventrite V, male I gonocoxae.

Figure 43. Diagnostic characters of Pyrrhalta shirozui Kimoto A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E apex of tibia of middle leg, male F abdominal ventrite VIII G gonocoxae H spermatheca I abdominal ventrite V, female J abdominal ventrite V, male K tarsi of middle leg, male.