Liroetis sichuanensis Jiang, 1988

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 : 560-563

Liroetis sichuanensis Jiang, 1988

( Figs 114 , 122, 129 , 140–147 )

Liroetis sichuanensis Jiang, 1988: 188 , 196 (original description).

Liroetis sichuanensis : JංൺඇǤ (1992):657 (noted); WൺඇǤ & YൺඇǤ (2006): 165 (faunistics); ZIJൺඇǤ & YൺඇǤ (2007): 301 (faunistics); Bൾൾඇൾඇ (2010): 478 (catalogue); YൺඇǤ et al. (2015): 247 (key), 249 (noted). Type locality. ‘[ China:] Sichuan: Wolong’.

Type material examined. Pൺඋൺඍඒඉൾ: 1♀ ( Figs 140–144 ), ‘[Sichuan,Nanping, Jiuzhaigou / 2300 m / Chinese Academy of Sciences] [in Chinese, w, combined p and h] // [1983.IX.6 / Collector Shu-Yong Wang] [in Chinese, w, combined p and h] // PARATYPE [y, p] // IOZ(E)1967852 [w, p] // Liroetis / sichuanensis Jiang 1988 / Det.Jiang Shengqiao [w, p]’ ( IZAS). Additional material examined. CHINA: GඎංඓΗඈඎ: Leishan Co., SE Kli, NE Leishan, Leigong Shan, E slope, env. of pass between Leishan and Fangxiang, 26°22.74′N 108°12.99′E, 1700–1800 m, 14.–24.vi.2001, 1 J, H. Schillhammer leg. ( NHMW); Leigong, Mt. Leigong, 2.vii.1988, 1 J, S.-Y. Wang leg. ( IZAS). SΗൺൺඇඑං: Taibashan mts., Houshensi, 33°53′N 107°49′E, 1600 m, ix.1999, 1 J ( NMPC). SංർΗඎൺඇ: Jintang, Jiajin Shan, 30°22′451″N 102°16′644″E, 2300 m, 15.vii.2004, 1 J, M. Janata leg. ( BMNH); Jintang, Jiajin Shan, 30°22′451″N 102°16′644″E, 3400 m, 6.vii.2004, 1 J, M. Janata leg. ( BMNH); Liziping env., mear Shimien, 200 km SW of Ya‘an, 27.vi.–3.vii.1991, 1 J 1♀, Z. Kejval leg. ( JBCB); Gongga Shan Mts., 29°41′N 101°58′E, 2850 m, 14.–19.vi.1999, 3 JJ 2 ♀♀, V. Siniaev & A. Plutenko leg. ( JBCB).

Diagnosis. Colouration. Head and pronotum brownish orange, scutellum, elytra and underside pale brown; antennae dark brown to black; legs pale brown with tibiae and tarsi black.

Body length. JJ: 8.3–9.6 mm, ♀♀: 9.5–11.0 mm.

Male ( Figs 145–147 ). Antennae 0.83 times as long as body. Pronotum 1.42 times as wide as long, lustrous, impunctate, anterior margin slightly concave with complete well visible border, lateral margins parallel in basal two thirds, rounded and convergent in anterior third. Posterior margin of abdominal ventrite IV with small V-shaped incision, surface around incision impressed and oblique. Last abdominal ventrite with longitudinal impression narrower in middle part. Metatibial spur absent.

Aedeagus ( Fig. 114 ). Median lobe of aedeagus 4.11 times as long as wide; apical third slightly convergent, with distinct narrow median furrow; basal two thirds parallel. Lateral view: median lobe straight in apical two thirds, rounded in basal third; lateral elevation triangular with rounded apex, placed in anterior third of aedeagus length. Dorsal process slender, 8.36 times as long as wide, 0.62 times as long as median lobe, subparallel, slightly constricted subapically, apex pointed to short sharp triangular tip. Lateral view: dorsal process moderately regularly rounded.

Female ( Figs 140–143 ). Metatibial spur absent. Posterior margin of last abdominal ventrite entire. Sternite VIII umbrella-like, with eight setae along posterior margin, middle part of posterior margin shallowly concave; tignum short, 0.5 times as long as sternite VIII, oblique, directed left ( Fig. 129 ). Spermatheca with well developed subglobular nodulus covered with fine wrinkles, cornu C-shaped, gradually narrowed towards apex, spermathecal duct slightly bent ( Fig. 122 ).

Differential diagnosis. Liroetis sichuanensis is very similar to other species of L. flavipennis species-group with pale coloured dorsum. Dorsal process of the aedeagus of L. sichuanensis is, in lateral view, of the same width in its entire length, which distinguishes it from L. flavipennis , L. lonicernis , L. prominensis , L. tibialis and L. zhongdianicus which has the dorsal process widened subapically and apex narrowed (cf. Figs 108, 110, 113–114, 116–117 ).

Distribution. China: Gansu (WൺඇǤ & YൺඇǤ 2006), Guizhou (ZIJൺඇǤ & YൺඇǤ 2007, present paper), Shaanxi (YൺඇǤ et al. 2015, present paper), Sichuan (JංൺඇǤ 1988, present paper).

Figures

Figs 108–117.Aedeagus of Liroetis, dorsal and lateral views. 108 – L. flavipennis Bryant, 1954; 109 – L. humeralis Jiang, 1988; 110 – L. lonicernis Jiang, 1988; 111 – L. medvedevi nom. nov.; 112 – L. nepalensis Chûjô, 1966; 113 – L. prominensis Jiang, 1988; 114 – L. sichuanensis Jiang, 1988; 115 – L. tibetanus Jiang, 1988; 116 – L. tibialis Jiang, 1988; 117 – L. zhongdianicus Jiang, 1988. Figs 116–117 reproduced from JංൺඇǤ (1988). Scale 0.5 mm.

Figs 118–131. Spermatheca (Figs 118–124) and sternite VII (Figs 125–131) of Liroetis. 118, 125 – L. flavipennis Bryant, 1954; 119, 126 – L. humeralis Jiang, 1988; 120, 127 – L. medvedevi nom. nov.; 121, 128 – L. nepalensis Chûjô, 1966; 122, 129 – L. sichuanensis Jiang, 1988; 123, 130 – L. tibetanus Jiang, 1988; 124, 131 – L. zhongdianicus Jiang, 1988. Scales 0.25 mm for Figs 118–124, 0.5 mm for Figs 125–131.

Figs 140–147. Liroetis sichuanensis Jiang, 1988. 140–144 – Female, paratype (8.7 mm). 140 – dorsal view; 141 – lateral view; 142 – ventral view; 143 – head and pronotum; 144 – labels. 145–147 – Male (8.2 mm). 145 – dorsal view; 146 – head and pronotum; 147 – apex of abdomen.