Cissidium sakaii Sawada, 2008

Fig. 112

Material examined

Paratypes JAPAN • 1 ♂; Mt. Saragamine, Ehime Pref.; 29 May 1993; M. Sakai leg.; YS • 1 ♂; Kama, Yamaguchi Pref.; 8 Aug. 1999; Y. Nishikawa leg.; BMNH • 1 ♂; Shirasuna, Komatsujima City, Tokushima Pref.; 4 Nov. 1993; M. Sakai leg. (BMNH); 1♂, Fall of Hiji, Kunigami-son, Okinawa Pref., 13 Apr. 1996, H. Hoshina leg.; YS .

Supplementary description

The following description amplifies the type description of Sawada (2008) in order to conform with the entries in the present paper.

SIZE. Habitus (Fig. 112A), length 0.69 mm.

COLOUR. Reddish brown, antennae, legs and pubescence dusky yellow. antennomeres III–XI 0.31 mm long.

HEAD. With a shallow uninterrupted transverse depression behind the eyes, width across the eyes 0.20 mm.

PRONOTUM. Length 0.18 mm, width 0.29 mm, sparsely pubescent, foveolate and foveate in basal half, the foveae being almost the same size as the foveolae; side margins rounded to almost parallel-sided, narrowly bordered to slightly acute hind angles, the border continuing along the posterior margin to the sinuate emargination in front of the scutellum (Fig. 112B).

ELYTRA. Length 0.48 mm, width 0.39 mm, pubescent and foveolate.

MESOVENTRITE. Median extension of collar tapering from wide base almost to a point; mid-keel with concave sides, hind angles almost reaching anterior borders of mesocoxae; keel narrow, parallel-sided

then tapering to between the mesocoxae; mesoventral lateral borders evenly rounded, serrate in posterior half; humeri toothed (Fig. 112C).

METAVENTRITE. Without pubescence, length 0.17 mm, distance across spines 0.11 mm, disc simple; mesocoxal posterior borders serrate.

GENITALIA. Male aedeagus as Fig. 6 Fa–b but beak more pointed and slightly raised at tip which is not so strongly bent. Females not known.

Remarks

This is the only Japanese species in this group.