Liroetis metallipennis ( 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 : 575-578

Liroetis metallipennis ( Chûjô, 1962) comb. nov.

( Figs 191 , 203 , 214 , 228–231 )

Pseudoliroëtis metallipennis Chûjô, 1962: 181 (original description).

Pseudoliroetis metallipennis : Wංඅർඈඑ (1973): 478 (catalogue); Kංආඈඍඈ (1969): 36 (faunistics); Tൺĸංඓൺඐൺ et al. (1995): 12 (faunistics); Kං- ආඈඍඈ & CIJඎ (1996): 70 (noted).

Siemssenius metallipennis : Kංආඈඍඈ & Tൺĸංඓൺඐൺ (1997): 379 (noted); ZIJൺඇǤ et al. (2008b): 127 (key); Bൾൾඇൾඇ (2010): 488 (catalogue); TൺĸൺIJൺඌIJං (2012): 324 (faunistics); YൺඇǤ et al. (2015): 251 (key), 251 (noted); Lൾൾ et al. (2016): 130 (noted); Lൾൾ (2016): 371 (redescription), 383 (key).

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

Type material. Not examined.

Additional material examined. TAIWAN: Nantou, Tatachia, 18.v.2010, 1 J 1♀, M.-H. Tsou leg. ( JBCB); Nantou,Tatachia, 9.vii.2014, 1 ♀, C.-L. Lee leg. ( JBCB); Chiayi,Yushan, 1.vii.2015, 1 J, J.-C. Chen leg. ( JBCB).

Diagnosis. Colouration. Head and scutellum black, elytra metallic greenish bronze. Pronotum and underside yellow. Antennae black. Legs yellow with apices of femora, tibiae and tarsi black.

Body length. JJ: 6.9–7.5 mm, ♀♀: 8.3–8.5 mm.

Male ( Figs 228–231 ). Antennae 0.95 times as long as body. Pronotum convex, 1.77 times as wide as long, very finely punctate, anterior margin nearly straight, unbordered, posterior margin straight in middle part, oblique laterally, thinly bordered, lateral margins moderately rounded, with wider border. Scutellum covered with several distinct punctures. Protarsomere I elongate, parallel, convergent basally. Metatibial spur narrow.

Aedeagus ( Fig. 191 ). Median lobe of aedeagus 2.91 times as long as wide, with apical process wide, then gradually widened towards base. Lateral view: median lobe straight in middle part, apical part slightly bent; lateral elevation small, rounded, placed in anterior sixth of aedeagus length. Dorsal process 4.03 times as long as wide, 0.81 times as long as median lobe, wide, with widely rounded apex. Lateral view: dorsal process very wide in apical half, gradually narrowed basally.

Female. Protarsomere I slightly narrower than in males. Sternite VIII heart-shaped, posterior margin rounded with shallow emargination in middle, surface laterally with two elevated plates, long setae accumulated along posterior and inner margins of those plates, tignum short, 0.30 times as long as sternite VIII, slightly asymmetrical to left ( Fig. 214 ). Spermatheca with poorly developed nodulus, cornu C-shaped, spermathecal duct nearly straight ( Fig. 203 ).

Differential diagnosis. Liroetis metallipennis can be distinguished from similar L. cheni by the colouration of elytra which are metallic greenish or purplish bronze in L. metallipennis but black with metallic tint in L. cheni . Aedeagi of both species are very similar ( Figs 185 , 191 ). Host plant. Caprifoliaceae : Lonicera acuminata Wall. (Lൾൾ 2016).

Distribution. Taiwan (Kංආඈඍඈ 1969, Tൺĸංඓൺඐൺ et al. 1995, TൺĸൺIJൺඌIJං 2012, Lൾൾ 2016, present paper).

Figures

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 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 228–231. Liroetis metallipennis (Chûjô, 1962), male (6.9 mm). 228 – dorsal view; 229 – ventral view; 230 – head and pronotum; 231 – abdomen.

Figs 185–188.Aedeagus of Liroetis, dorsal and lateral views.185 – L. cheni (Lee, 2016); 186 – L. elongatus (Kimoto, 1977); 187 – L. fulvipennis Jacoby, 1890; 188 – L. jeanvoinei (Laboissière, 1929). Scale 0.5 mm.