Stenolemus Signoret, 1858

Ishikawa, Tadashi & Naka, Takeru, 2016, The assassin bug genera Nagustoides and Stenolemus (Hemiptera: Heteroptera: Reduviidae) newly recorded from Japan, Zootaxa 4161 (4), pp. 593-600 : 597-598

Genus Stenolemus Signoret, 1858

Stenolemus Signoret, 1858: 251 (new genus). Type species: Stenolemus spiniventris Signoret, 1858 , by monotypy.

Stenolaemus Lethierry & Severin, 1896: 70 : Incorrect subsequent spelling.

Phasmatophanes Kirkaldy, 1908: 369 (new genus). Type species: Phasmatophanes muiri Kirkaldy, 1908, by monotypy. Synonymized by Bergroth (1911: 17).

With approximately 80 species ( Maldonado-Capriles 1990), Stenolemus is one of the more species-rich genera in the tribe Emesini of the subfamily Emesinae , with a distribution range that includes all biogeographical regions. Diagnostic characters of the genus within the Emesini are: rostral segment I (true labial segment II) as long as or longer than rostral segment II (true labial segment III) ( Fig. 25 ); pronotum pedunculate ( Figs. 17–18 , 20–21 ); posterior pronotal lobe with a pair of projections on disc ( Figs. 18 , 21 ); forewing with discal and basal cells in macropterous form ( Fig. 19 ); and protarsus two-segmented ( Fig. 26 ). Wygodzinsky (1966) provided a detailed redescription of the genus.

The species mentioned below is the first representative of the genus Stenolemus in Japan.

Figures

FIGURES 20 – 26. Stenolemus alikakay from Japan. 20 – 21, Head and pronotum, dorsal (20) and lateral (21) views; 22 – 24, femora of fore (22), middle (23), and hind (24) legs; 25, head, lateral view; 26, protarsus. Scale bars: 1 mm for Figs. 20 – 25, 0. 5 mm for Fig. 26.

FIGURES 17 – 19. Stenolemus alikakay from Japan, female, dorsal (17) and lateral (18) views, and left forewing (19). Scale bars: 3 mm for Figs. 17 – 18, 1 mm for Fig. 19.