Liroetis rufipennis ( Chûjô, 1962 ) Bezděk, 2021

Bezděk, Jan, 2021, Redefinition of Liroetis, with descriptions of two new species and an annotated list of species (Coleoptera: Chrysomelidae: Galerucinae), Acta Entomologica Musei Nationalis Pragae 61 (2), pp. 529-614 : 582-585

Liroetis rufipennis ( Chûjô, 1962) comb. nov.

( Figs 194 , 206 , 217 , 245–249 )

Pseudoliroëtis rufipennis Chûjô, 1962: 178 (original description).

Pseudoliroetis rufipennis : Gඋൾඌඌංඍඍ & Kංආඈඍඈ (1963):530(key); Kංආඈඍඈ (1969): 36 (faunistics); Wංඅർඈඑ (1973): 478 (catalogue); Tൺĸංඓൺඐൺ et al. (1995): 12 (faunistics); Kංආඈඍඈ & CIJඎ (1996): 70 (noted).

Siemssenius rufipennis : Kංආඈඍඈ (1989b): 252 (faunistics); Kංආඈඍඈ & Tൺĸංඓൺඐൺ (1997): 379 (noted); Lൾൾ & CIJൾඇǤ (2007): 124 (noted); ZIJൺඇǤ et al. (2008b): 127 (key); Bൾൾඇൾඇ (2010): 488 (catalogue); TൺĸൺIJൺඌIJං (2012): 324 (faunistics); YൺඇǤ et al. (2015): 251 (key), 252 (noted); Lൾൾ (2016): 378 (redescription), 383 (key).

Type locality. ‘Formosa, Mt. Arisan, Tainan-Syû [= Taiwan, Chiayi County, Alishan Mt.]’

Type material. Not examined.

Additional material examined. TAIWAN: Alishan, 2400 m, 17.–26. vi.1995, 2 JJ, Dalihod leg. ( MOCP); Taichung County, Anmashan region, 1650 m, 20.vi.1997, 1 ♀, B. Herczig & L. Ronkay leg. ( HNHM); Taichung County, 17 km SW of Lishanm Techi vill., 1500 m, 26.– 27.v.1997, 1 ♀, Gy. M.László & G. László leg.( HNHM); Taichung County, Hui Sun Exp. Forest, Guandashi LTER site, 24°04′49″N 121°02′08″E, 950 m, 12.–13.iv.1997, 1 ♀, Peregovits & Kun leg. ( HNHM); Taichung, Lishan, 5.vi.2016, 1 J 1 ♀, J.-C. Chen leg. ( JBCB); Nantou, Huakang, 17.vi.2016, 1 ♀, J.-C. Chen leg. ( JBCB).

Diagnosis. Colouration. Body black, except for reddish brown elytra and abdomen.

Body length. JJ: 9.1–9.2 mm, ♀♀: 11.8–12.2 mm.

Male ( Figs 245–247 ). Antennae 0.80 times as long as body. Pronotum convex, 1.85 times as wide as long, finely punctate, anterior margin nearly straight, unbordered, posterior margin straight in middle part, oblique laterally, thinly bordered, lateral margins straight and parallel in posterior two thirds, anterior third rounded and convergent, with wider border. Posterior margin of abdominal ventrite IV with two small transverse triangular processes separated by U-shaped incision. Longitudinal impression on last abdominal ventrite wide and deep, constricted subbasally. Protarsomere I elongate subtriangular. Metatibial spur wide, flat, with rounded apex.

Aedeagus ( Fig. 194 ). Median lobe of aedeagus 3.16 times as long as wide; apical process very short, basal half very wide, parallel, apical half slightly convergent. Lateral view: median lobe bisinuate, apical quarter oblique; lateral elevation triangular, placed in anterior sixth of aedeagus length. Dorsal process long, 4.84 times as long as wide, 0.87 times as long as median lobe; lanceolate, with basal third narrower, subparallel, widest in anterior third, apex sharp. Lateral view: basal half regularly bent, slightly narrower, apical half wider, with ventral side slightly convex, apex sharp.

Female ( Figs 248–249 ). Metatibial spur absent. Sternite VIII subpentagonal, posterior margin with elevated keel terminated with small triangular process, long setae accumulated along posterior margins, middle part of surface with U-shaped impression; tignum 0.30 times as long as sternite VIII ( Fig. 217 ). Spermatheca with poorly developed nodulus, cornu C-shaped, narrow, spermathecal duct slightly bent ( Fig. 206 ).

Differential diagnosis. Having black body and reddish brown elytra and abdomen, Liroetis rufipennis is very similar to other Taiwanese species L. jungchani , L. liui , L. tsoui , and L. yuae . These species can be reliably identified only based on the structure of aedeagus ( Figs 189–190 , 194, 196–197 ). Median lobe of aedeagus of L. rufipennis has lateral elevation large, triangular, dorsal process widely lanceolate and in lateral view slightly extended subapically ( Fig. 194 ).

Host plants. Caprifoliaceae : Lonicera acuminata Wall. , Hypericaceae : Hypericum nagasawae Hayata (Lൾൾ 2016). Distribution. Taiwan (CIJǙඃත 1962; Kංආඈඍඈ 1969, 1989b; Tൺĸංඓൺඐൺ et al. 1995; TൺĸൺIJൺඌIJං 2012; Lൾൾ 2016; present paper).

Liroetis sulcipennis (Zhang & Yang, 2008) comb. nov. ( Figs 195 , 250–256 )

Siemssenius sulcipennis Zhang & Yang, 2008 in ZIJൺඇǤ et al. (2008b): 127 (original description, key).

Siemssenius sulcipennis : Bൾൾඇൾඇ (2010): 488 (catalogue); YൺඇǤ et al. (2015): 251 (key), 252 (noted).

Type locality. ‘[ China:] Yunnan: Yuxi’.

Type material examined. Pൺඋൺඍඒඉൾ:1 J ( Figs 250–256 ), ‘[Jiulaodong / 1800–1900 m / Collector Fuxing Zhu] [in Chinese, w, combined p and h] // [Sichuan / Mt. Emeishan / 1957.VII.8 / Chinese Academy of Sciences] [in Chinese, w, combined p and h] // PARATYPE [y, p] // IOZ(E)1966999 [w, p] // Siemssenius sulcipennis / Zhang [w, p]’ ( IZAS).

Diagnosis. Colouration. Body pale brown.Antennae black with brownish antennomere I. Legs brown with black tibiae and tarsi.

Body length. J: 9.4 mm (paratype) (JJ: 10.0– 10.5 mm based on the original description).

Male ( Figs 250–256 ). Pronotum convex, 1.56 times as wide as long, finely punctate, anterior margin slightly concave, with border visible only near anterior angles, posterior margin straight in middle part, laterally oblique and with two points, thinly bordered, lateral margins straight, subparallel in posterior two thirds, anterior third rounded and convergent, with wider border. Elytra with sulcus along lateral and apical margins. Posterior margin of abdominal ventrite IV with two small triangular processes separated by U-shaped incision. Longitudinal impression on last abdominal ventrite wide and deep, convergent basally. Protarsomere I elongate, subtriangular. Metatibial spur thin. Aedeagus ( Fig. 195 ). Median lobe of aedeagus 3.26 times as long as wide; widest basally, slightly convergent anteriorly and abruptly constricted in apical tenth, apex narrow, subtriangular, apically widened, with distinct narrow median furrow. Lateral view: median lobe slightly bisinuate; lateral elevation widely triangular, placed in anterior fifth of aedeagus length. Dorsal process 5.95 times as long as wide, 0.85 times as long as median lobe; apical half slightly wider, apex triangular and sharp. Lateral view: dorsal process widely regularly rounded.

Female unknown.

Differential diagnosis. Liroetis sulcipennis differs from all species in L. fulvipennis species-group in having elytra with deep furrow along lateral and posterior margins ( Fig. 256 ).

Distribution. China: Yunnan, Sichuan (ZIJൺඇǤ et al. 2008b).

Figures

Figs 193–196. Aedeagus of Liroetis, dorsal and lateral views. 193 – L. nigriceps (Laboissière, 1929); 194 – L. rufipennis (Chûjô, 1962); 195 – L. sulcipennis (Zhang & Yang, 2008); 196 – L. tsoui (Lee, 2016). Scale 0.5 mm.

Figs 197–208. 197 – Aedeagus of Liroetis yuae (Lee, 2016), dorsal and lateral views. 198–208 – Spermatheca. 198 – L. cheni (Lee, 2016); 199 – L. fulvipennis Jacoby, 1890; 200 – L. jeanvoinei (Laboissière, 1929); 201 – L. jungchani (Lee, 2016); 202 – L. liui (Lee, 2016); 203 – L. metallipennis (Chûjô, 1962); 204 – L. modestus (Weise, 1922); 205 – L. nigriceps (Laboissière, 1929); 206 – L. rufipennis (Chûjô, 1962); 207 – L. tsoui (Lee, 2016); 208 – L. yuae (Lee, 2016). Figs 198, 201–203, 207–208 reproduced from Lൾൾ (2016). Scales: 0.5 mm for Fig. 197, 0.25 mm for Figs 198–208.

Figs 209–219.Sternite VIII.209 – L. cheni (Lee, 2016); 210 – L. fulvipennis Jacoby,1890; 211 – L.jeanvoinei (Laboissière, 1929); 212 – L. jungchani (Lee, 2016); 213 – L. liui (Lee, 2016); 214 – L. metallipennis (Chûjô, 1962); 215 – L. modestus (Weise, 1922); 216 – L. nigriceps (Laboissière, 1929); 217 – L. rufipennis (Chûjô, 1962); 218 – L. tsoui (Lee, 2016); 219 – L. yuae (Lee, 2016). Figs 209, 212–214, 218–219 reproduced from Lൾൾ (2016). Scale 0.5 mm.

Figs 245–249. Liroetis rufipennis (Chûjô, 1962). 245–247 – Male (9.0 mm). 245 – dorsal view; 246 – head and pronotum; 247 – abdomen. 248–249 – Female (11.9 mm). 248 – dorsal view; 249 – lateral view.

Figs 189–192. Aedeagus of Liroetis, dorsal and lateral views. 189 – L. jungchani (Lee, 2016); 190 – L. liui (Lee, 2016); 191 – L. metallipennis (Chûjô, 1962); 192 – L. modestus (Weise, 1922). Scale 0.5 mm.

Figs 250–256.Liroetis sulcipennis (Zhang & Yang, 2008), male, paratype (9.4 mm). 250 – dorsal view; 251 – lateral view; 252 – ventral view; 253 – apex of abdomen; 254 – labels; 255 – head and pronotum; 256 – elytron, lateral view.