Kuatunia Evers

Key to the species of the genus Kuatunia Evers

1. Pronotum uniformly dark, the same coloration as elytra (black, dark-brown or with metallic luster).................... 2

- Pronotum completely or in part yellow or orange............................................................ 7

2. Head completely dark, elytra black........................................................................ 3

- Distal part of head before the antennae yellow, elytra black, or partially light...................................... 5

3. Legs dark except for lighter, brownish tarsi................................................................ 4

- Apices of femora, tarsi and tibiae yellow. Antennae yellow, superior part of 1st segment above, and segments 6–11 almost completely darkened. Male apical sternite fitted with a narrow horn, elytral apices with dorsally curved fine flexure (Fig. 15).......................................................................... australis Wittmer, 1991 (Madagascar)

4. Only 1st–4th antennal segments more or less yellowish at the inner side. Tarsi black; in males, tarsal comb light-brownish. Apical tergite narrow, elongate and rounded, elytral apices fitted with an oval lamella with a curved plate over it (Fig. 20)..................................................................... nigroopaca Wittmer, 1995 (China: Sichuan)

- Only 1st–3rd antennal segments red-yellow and slightly darkened dorsally, 4th segment brown, remaining segments dark; tarsi brownish, anterior reddish. In male, apical sternite cut, almost square-shaped, elytral apices shaped like tiny processes closed in half-circles (Fig. 19).............................................. klapperichi Evers, 1945 –48 (China: Fujian)

5. Elytra completely black, including elytral apices; antennae and legs completely yellow. In male, structure of elytral apices as incrassate flexure curved dorsally and anteriorly, with deep impression inside (Figs. 2, 3).................................................................. nordica Tshernyshev, 2012 sp. n. (East-North Russia: Taimyr Peninsula, Yakutia)

- Elytra, at least to some extent, pale coloured laterally and/or apically some of the femora, or tibiae, darkened............ 6

6. Antennomeres 1–3 yellow, 4–11 brownish, elytra black, anterior and intermediate tarsi completely black, posterior tarsi yellow. In male impressions in elytral apices yellow, near the suture black, appendage black........................................................................................... oblongula oblongula (Kiesenwetter 1874) (Japan)

- Antennae completely brownish, elytra brown with longitudinal yellow stripes in laterals extending from apex to humeri, all tarsi, apices of intermediate and posterior femora yellow. Elytral apices as in Fig. 21...................................................................................................... oblongula chujoi Wittmer 1954 (Japan)

7. Pronotum partially darkened............................................................................. 8

- Pronotum completely light, yellow or orange............................................................... 9

8. Pronotum almost completely black excepting basal slope and posterior angles light yellow, head and scutellum black, antennomeres 1–3rd yellow at the inner side, remaining black, legs black with slightly lighter tarsi; elytra black with whitish apices and brownish suture. In male, transversal impression of elytral apices light, incrassate flexures black (Fig. 17).................................................................................. emeiensis Wittmer, 1995 (China: Sichuan)

- Pronotum orange with a longitudinal black spot in the middle; scutellum yellow at base and darkened distally, head yellow with dark occiput, antennae yellow, slightly darkened from outer side, apical segments almost completely dark; legs completely yellow; elytra black with narrow yellow lateral stripes slightly widening towards middle, suture light-brown. In male inner part of impression in elytral structures yellow (Fig. 22).............. oloyensis Wittmer 1998 (Russia: Transbaikalia)

9. Elytra completely black............................................................................... 10

- Elytra black with light spots on apices, in some specimens with narrow light stripes on laterally, either on humeri or on suture.................................................................................................. 11

10. Elytra with dark blue metallic luster; head, maxillary palps, and scutellum black, antennomeres 1–2 yellowish at inner side, remaining segments black, pronotum orange, legs black with male tarsal comb brownish. Male elytral apices widely impressed with a large leaf-shaped longitudinal appendage in the middle (Fig. 18).............................................................................................................. guilinensis Wittmer, 1995 (China: Guangxi)

- Elytra free from metallic luster; head black; mouthparts, palps and pronotum yellow-orange; antennomeres 1–4 yellowish darkened on outer sides, remaining black; scutellum and elytra completely black, legs black with all knees, tarsi and intermediate coxae yellow. Male elytral apices as concave and impressed plate apically (Fig. 9).................................................................... wolongensis Tshernyshev, 2012 sp.n. (China: Wolong National Nature Reserve)

11. Head, maxillary palps, pronotum and legs completely orange, scutellum and elytra dark, elytra with narrow yellow stripe on base and humeri and yellow apices, antennomeres 1–4 orange, dark, 5th slightly darkened, remaining black. In male, specific structure as shallow trapeziform impression near the elytral apices fitted with thin ribs on the external and inferior sides, and a thin small appendage near the suture (Fig. 24)............................... soppongensis Wittmer, 1995 (Thailand)

- Head black, legs almost completely dark.................................................................. 12

12. Legs completely black, anterior slightly lighter; head, maxillary palps and scutellum black, elytra black with orange spots apically, pronotum orange, antennomeres 1–3 yellowish, completely black on inner sides. In male, specific structures in each elytral apex with an entangled three-cells impression fitted with a wide longitudinal upper appendage in a middle (Fig. 23)........................................................................ sichuana Wittmer, 1995 (China: Sichuan)

- Legs black with light tarsi and tibiae; head black, pronotum yellow-orange, elytra dark with small yellow apical spots; antennomeres 1–2 black but yellowish spotted on outer sides, remaining black. In male, specific structures in elytral apices as complicated three-cell impression from outer side, and deeply impressed flexure near the suture with wide, longitudinal, upper appendage near the suture (Fig. 16)............................................... bullosa Wittmer, 1995 (Nepal)