Idiocerus formosanus Matsumura, 1912

Wang, Xian-Yi, Wang, Jia-Jia, Dai, Ren-Huai & Webb, Mick D., 2022, Descriptions of two new Idiocerini leafhoppers of the genus Idioscopus (Hemiptera, Cicadellidae) from China, ZooKeys 1095, pp. 97-110 : 97

Idiocerus formosanus Matsumura

Fig. 5C, D

Idiocerus taiwanus Matsumura- Huang and Maldonado-Capriles 1992: 4 (listed); Xue et al. 2017: 407 (listed).

Remarks.

This species was described from an unknown number of specimens (syntypic) from Koshun (= Hengchun), southern Taiwan. Both Andy Hamilton and Masami Hayashi (pers comm.) examined the type series in Entomological Institute, Hokkaido University, Sapporo, Japan (9 ♂♂ and 4 ♀♀) and the latter’s photographs of a syntype are reproduced here (Fig. 5C, D ). One of the male syntypes had been dissected and bears a determination label by Andy Hamilton indicating the species belongs to Amritodus , which needs to be confirmed, together with an unpublished lectotype label. The label information on the specimens is as follows (hw = handwritten, pr = printed), double quotation marks show each label, a single oblique line (except between day and month) is used for changing to new line, and the description on underside is indicated after double oblique lines:

1 male [dissected], "Formosa / Matsumura [printed] // Koshun / 7/7-02 [hw]", " I. formosanus n.sp. [hw] / det. Matsumura [pr]", "Type Matsumura" (red printed label), "Lectotype [red printed label] / Idiocerus formosanus Mm. [hw by K.G.A. Hamilton, not published]", " Amritodus formosanus (Matsum.) / Det. KGAH ’76” [in double red frame, hw]. 2 male, same data as previous, "PARATYPES [yellow printed label] / Idiocerus formosanus Mm. [hw]"

4 male, 3 female, [upper right male dissected], "Formosa / Matsumura [pr] // 7/VII 1906 | Koshun [hw]", "Paratypes (yellow printed label) / Idiocerus formosanus Mm." [hw];

1 female, "Formosa / Matsumura [pr] // 29/VI 1906 / Koshun (hw)"

1 male, "Formosa / Matsumura [pr] // 7/VII 1906 / Koshun [hw]

1 male, "Formosa / Matsumura [pr] // 10/VIII 1906 / Koshun [hw]"

Figures

Figure 5. Matsumura Taiwan Idiocerine species A, B Idiocerus apicalis, dorsal and lateral, habitus respectively (holotype) C, D I. formosanus, dorsal and lateral, habitus respectively (syntype). Photographs by Masami Hayashi.