Corymbitodes zixiae, Qiu, 2023

Corymbitodes zixiae sp. nov.

( Fig. 5 -7; 20)

ZooBank:http://zoobank.org/ BEC71F42-2E59-44C1-A570-251C192D5C82

Holotype, ♂ ( MYNU), Ahualuohe River , Zhonglu Township , Weixi County, Diqing Prefecture, 2400-2900 m, V.2023, local leg.

Paratypes, 1 ♂ & 1 ♀ ( MYNU), same data as holotype .

Diagnosis. – This new species resembles Corymbitodes qingxiae sp. nov., but it can be easily separated from the latter by the strong and reddish-purple metallic reflection on dorsal surface, the straight lateral margin of pronotum and the narrower body. It can be further distinguished from the later by the curved and pointed posterior angle of pronotum, stouter last antennomere, and the spinous apices of elytra in male. Females of these two species may be confused with each other, but they can be distinguished from each other by the density of punctures on pronotum (denser in C. zixiae ), the apical portion of epipleuron (narrowed in C. zixiae , while widened in C. qingxiae ), as well as the shape of antennomeres 7 - 10 (serrated portion more protruded in C. zixiae ).

Description of the male

Dimension. –Body length 8.5-9.5 mm (holotype 9.5 mm).

Shape and coloration. – Shiny; head, pronotum and elytra with strong reddish purple metallic reflection; anterior portion, labrum, base of pronotum andelytra, scutellar shield golden metallic green;base of mandible with mixed metallic reflection (purple, yellow and green); antennae and maxillary palpi black; ventral side metallic reddish yellow, with apical portion of prosternum, posterior portion of hypomeron, mesothorax metallic golden, with metallic bluish or greenish sheen decorated; legs yellow. Body covered with whitish short pubescence.

Head. – Frons slightly depressed apically; punctures umbilicate, almost contiguous.Antennaegreatlyexceedingposterior angles of pronotum byaboutthe last two plus half of antennomere 9, serrated from antennomere 3 on; scape elongate oval, pedicel small, globous, antennomere 3 elongate triangular, about 2 timeslonger thanwide,antennomere 4- 10 triangular, almost subequal in length, the serrated portion gradually slenderer, the last antennomere elongate, apex narrowed,blunt.

Pronotum. – Elongate, subtrapezoidal, depressed along midline, about 1.1 times longer than width, widest at posterior angles; sides almost straight, gradually widened, posterior angles long, divergent, curved outward, apices pointed; punctures umbilicate, intervals of punctures almost contiguous.

Scutellar shield. – Covered with dense pubescence, tongue-shaped, densely with small punctures.

Elytra. – Elongate, about 2.7 times longer than width, widest near basal third; apical portion gradually narrowed, apices spinous, not connected; surface smooth, strongly wrinkled, striae formed by lines of quadrate punctures, each puncture connected bygroovedline, spacebetween punctures in the line not uniform; interstriae sparsely punctuated.

Aedeagus (Fig. 20). – Typical of this genus.

Female paratype. – Body length 9.5 mm. Similar to male by the coloration, the carination of posterior angle of pronotum, the narrowed pronotum, and the narrowed apical portion of epipleuron, but differs from male by with short and less serrated antennae that not reaching posterior angles of pronotum by about one antennomere, posterior angle of pronotum not pointed, and apices of elytra not spinous.

Larva. – Unknown.

Etymology. – The specific epithetisnamedafter Zixia fairy,a role in the film A Chinese Odyssey.

Distribution. – China (Yunnan).

FAUNITAXYS - ISSN (Print): 2269 - 6016 - ISSN (Online): 2970 - 4960

1 - 2. Corymbitodes jianyueae sp. nov., ♂ holotype from Simianshan , Chongqing . 3 - 4. Corymbitodes wangi sp. nov., ♀ holotype from Huaping , Guangxi .

5 - 7. Corymbitodes zixiae sp. nov., from Weixi , Yunnan. 5 -6. ♂ holotype . 7. ♀ paratype.

8 - 10. Corymbitodes qingxiae sp. nov. from Gongshan , Yunnan. 8 - 9. ♂ holotype 10. ♀ paratype.