Sulcolotis xanthomarginalis Liu & Wang, 2022

Liu, Liyuan, Wang, Yan, Guo, Qiuhong, Chen, Xiaosheng & Wang, Xingmin, 2022, Three new species of the genus Sulcolotis Miyatake (Coleoptera, Coccinellidae Sticholotidini) from the Philippines, Zootaxa 5168 (1), pp. 75-82 : 79-80

Sulcolotis xanthomarginalis Liu & Wang sp. nov.

( Figs 4a–g )

Diagnosis: This species can be distinguished from S. seminigra Miyatake and S. ovalis sp.nov by the nearly entirely black elytron.

Description. TL: 2.31–2.79mm, TW: 1.75–2.18mm, TH: 1.25–1.82mm, TL/TW: 1.28–1.32; PL/PW: 0.23– 0.24; EL/EW: 1.05–1.10; HW/PW: 0.71–0.73; PW/TW: 0.66–0.67; HW/TW: 0.47–0.48; Eye W/HW: 0.40–0.45.

Head and pronotum yellowish brown. Scutellar shield, and elytra blackish brown with yellowish brown margin. Underside yellowish brown; except metaventrite and the middle part of ventrite 1 reddish brown.

Body rounded, strongly convex ( Figs 4b, c ). Head 0.48 times of elytral width (HW/TW=1:2.1), with sparse pubescence. Eyes finely faceted, interocular distance 0.43 times of head width. Frons broad, punctures uniform and dense ( Figs 4c, d ).

Pronotum 0.67 times of elytral width (PW/TW=1:1.5), moderately transverse, punctures uniform ( Figs 4a, c ). Elytra with uniform and dense punctures ( Figs 4a–c ).

Ventrite 6 subhemisphenical and posterior margin of ventrite 7 at middle strongly concave ( Fig. 4g ).

Male genitalia: Penis relatively short, pointed and apically curved, capsule with nearly same length of inner and outer arm; tegmen with penis guide distinctly shorter than parameres, in lateral view widest, then gradually tapering to apex; penis guide in ventral view gradually narrowing to apex.

Type material. Holotype: ♂, Philippines, Mt. Makiling , Luzon, Baker ( USNM) . Paratype: 2♂ 2♀, same data as holotype ( USNM) ; 1♀, Philippines Malinao Tayabas Baker ( USNM) ; 1♀, Philippines, S Luzon Quezon N. P (Lucena) 8–10. Jan. 1991 Bolm lgt., 250m ( ANIC) .

Distribution. Philippines (Luzon).

Etymology. The specific epithet is formed from the Greek noun Xanthus and Latin noun marginatus, referring to elytra with yellowish margin.

Figures

FIGURE 4. Sulcolotis xanthomarginalis Liu et Wang sp. n.: a) dorsal habitus; b. lateral habitus; c. frontal habitus; d. tegmen, ventral view; e. tegmen, lateral view; f. penis; g. abdomen, male.