Callimerus cacuminis G.Y. Yang & X.K. Yang

Yang, Gan-Yan, Montreuil, Olivier & Yang, Xing-Ke, 2013, Taxonomic revision of the genus Callimerus Gorham s. l. (Coleoptera, Cleridae). Part I. latifrons species-group, ZooKeys 294, pp. 9-35 : 26-27

Callimerus cacuminis G.Y. Yang & X.K. Yang sp. n. Figs 5472

Holotype.

China: "云南西双版纳勐啊, 1050-1080公尺；中国科学院 [Yunnan,Xishuang- banna, Meng’a, 1050-1080 m] / 1958.V.25, 采集者: 蒲富基 [PU Fuji leg.] / IOZ(E)1126330 / Holotype: Callimerus cacuminis Yang & Yang sp. nov. ♂, Des. Yang G. Y., 2011" (IZAS, ♂; Figs 54-56)*; Paratypes (6 ex). China: same data as holotype, but 1958.VIII.17, IOZ(E)1126331 (IZAS, 1♀); same data but 1958.V.23, ZHANG Yiran leg., IOZ(E)1126332 (IZAS, 1♂); Yunnan, Xishuangbanna, Mengla, 620-650 m, 1959.V.30, ZHANG Yiran leg., IOZ(E)1126996 (IZAS, 1♂); Yunnan, Menglongbanna, Mengsong, 1600 m, 1958.VIII.8, WANG Shuyong leg., IOZ(E)1126333 (IZAS, 1♀); Laos: "Laos-NE, Xieng Khouang prov., 19°38'N, 103°20'E - 19°37'N, 103°21'E, 30km NE Phonsavan: Ban Na Lam→Phou Sane Mt., 1300-1500 m, 10. -30.v.2009, M. Brancucci leg./NHMB Basel, NMPC Prague, Laos 2009 Expedition: M. Brancucci, M. Geiser, Z. Kraus, D. Hauck, V. Kuban" (NHMB, 1♀); "Laos-NE, Xieng Khouang prov.,~ 19°37-8'N 103°20'E, Phonsavan (30 km NE): Phou Sane Mt., ~1400-1500 m, 10.-30.v.2009, Z. Kraus leg./NHMB Basel, NMPC Prague, Laos 2009 Expedition: M. Brancucci, M. Geiser, Z. Kraus, D. Hauck, V. Kuban" (NHMB, 1♀).

Diagnosis.

The new species can be rapidly distinguished from other species of the latifrons species-group by: elytron with only one black spot at apex, lacking anterior spot; metasternum and metepisternum yellow; apices of parameres sharply attenuate, then divergent.

The coloration of this new species is similar to that of Callimerus pallidus Gorham and Callimerus gorhami Corporaal, which are excluded from the latifrons species-group in the present paper. The new species, however, differs from Callimerus pallidus by EL/EW 2.27-2.34, PL/PW about 0.9, EyD/EyW about 1.1 (Fig. 54) (EL/EW about 3.1, PL/PW about 1.2, EyD/EyW about 1.9 in Callimerus pallidus ; Fig. 79).

The new species differs from Callimerus gorhami by: PL/PW about 0.9, EyD/EyWabout 1.1, elytra parallel-sided, without scales, apical black spot on elytron with anterior bor der straight (Fig. 54) ( Callimerus gorhami with PL/PW about 1.1, EyD/EyW about 2.4, elytra slightly rounded at posterior sides, elytra apex with white scales, apical black spot with anterior border sinuate (Figs 81, 82)).

Description.

Size:length 9.9-11.7 mm, width 2.9-3.7 mm. Color: Head yellow, mandibles black; pronotum yellow; elytron yellow with a black spot at apex; legs yellow; under surface totally yellow except for last two ventrites of male abdomen and part of last ventrite of female abdomen darker. Head: AL/AD about 1.2 (Fig. 71); EyD/EyW about 1.1 (Fig. 71). Prothorax: PL/PW about 0.9. Elytra: EL/EW about 2.27-2.34. Male terminalia: apices of parameres sharply attenuate, slender and divergent (Figs 59-61, 66-68); TML/TMW about 1.1, TMaL/TML about 0.54, outer margin of ventral membranous region of tegmen curved (Figs 61, 68, 69); tegmen with an additional tiny membranous region at dorsal-central side (Fig. 66); SApL/SFL about 0.31 (Fig. 63); tergite VIII with posterior margin pointed, notched in middle (Fig. 64), sternite VIII with posterior margin deeply concave (Fig 65).

Variation.

In the holotype and a paratype (No. IOZ(E)1126332), the black spot on elytron reach to the extreme apex; in the other paratypes, the black spot does not reach to the extreme apex so that a tiny region in extreme apex is yellow.

Distribution

(Fig. 72). China (Yunnan), Laos.

Etymology.

The Latin adjective “cacuminis” means of a peak, top or tip, and emphasizes the singular black spot on elytra apex.