Liroetis medvedevi, 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 : 555

Liroetis medvedevi nom. nov.

( Figs 95–100 , 111 , 120, 127 )

Liroetis nigricollis Medvedev, 2009: 407 (original description). Junior secondary homonym of L. nigricollis ( Jiang, 1990) .

Liroetis nigricollis : SඉඋൾർIJൾඋ-Uൾൻൾඋඌൺඑ (2011): 433 (catalogue).

Type locality. ‘ India, West Bengal, Darjeeling, Tonglu’.

Type material examined. Hඈඅඈඍඒඉൾ: J ( Figs 95–97 ), ‘ INDIA, West Bengal / Darjeeling, Tonglu / 19.–23.v.1998 / 2600–3000m NN / leg. Fabrizi &Ahrens [w, p] // Holotypus / Liroetis / nigricollis / L. Medvedev [r, p]’ ( NMEG). Pൺඋൺඍඒඉൾඌ: 3 ♀♀ ( Figs 98–100 ), ‘ INDIA, West Bengal / Darjeeling, Tonglu / 19.–23.v.1998 / 2600–3000m NN / leg. Fabrizi & Ahrens [w, p] // PARATYPUS / Liroetis / nigricollis n. sp. / des. L. Medvedev [r, p]’ ( NMEG).

Diagnosis. Colouration. Head, scutellum and elytra brown, pronotum brownish black with paler basal part, antennae, legs and underside black, posterior part of last abdominal ventrite pale.

Body length. J (holotype): 7.0 mm, ♀♀ (paratypes): 8.7–9.8 mm (J ♀: 7.2–10.0 mm based on the original description).

Male ( Figs 95, 97 ).Antennae 0.96 times as long as body. Pronotum convex, 1.53 times as wide as long, lustrous, almost impunctate, anterior margin straight, bordered, anterior angles not projecting. Middle part of posterior margin of abdominal ventrite IV obliquely impressed, with two small subtriagular processes separated by shallow semicircular incision. Last abdominal ventrite with longitudinal impression narrowed subbasally. Metatibial spur absent.

Aedeagus ( Fig. 111 ). Median lobe of aedeagus 3.16 times as long as wide; basal quarter wide, subparallel, middle part of median lobe gradually convergent anteriorly, distinctly constricted in anterior quarter, apical part narrow, subparallel with distinct narrow median furrow. Lateral view: median lobe widely rounded; lateral elevation rounded, placed in anterior 2/5 of aedeagus length. Dorsal process 5.00 times as long as wide, 0.65 times as long as median lobe; narrow, widest in middle part, apex narrow and sharp. Lateral view: dorsal process widely regularly rounded, apical part with large U-shaped incision, dorsal branch wide and short, ventral branch long and narrow.

Female ( Figs 98–99 ). Metatibial spur absent. Posterior margin of last abdominal ventrite entire. Sternite VIII umbrella-like with shallow emargination in middle of posterior margin, surface without setation; tignum 0.25 times as long as sternite VIII ( Fig. 127 ). Spermatheca with well developed oval nodulus, cornu C-shaped, narrow, gradually narrowing towards sharp apex, spermathecal duct moderately sinuate ( Fig. 120 ).

Differential diagnosis. Liroetis medvedevi nom. nov. can be distinguished from all other representatives of L. flavipennis species-group by brownish black pronotum (pale brown in all other species). Dorsal process of aedeagus in lateral view are bifurcate, dorsal branch wide and short, ventral branch long and narrow, separated with large U-shaped incision ( Fig. 111 ). Similarly modified dorsal process of aedeagus is known also in L. tibetanus which, however, has pale brown pronotum and dorsal process of aedeagus with ventral branch shorter than in L. medvedevi .

Distribution. India: West Bengal, Nepal (Mൾൽඏൾൽൾඏ 2009).

Comments. Liroetis nigricollis Medvedev, 2009 is a junior secondary homonym of L. nigricollis ( Jiang, 1990) . New substitute name L. medvedevi nom. nov. is proposed to replace L. nigricollis Medvedev, 2009 .

Figures

Figs 95–100. Liroetis medvedevi nom. nov. (type specimens of L. nigricollis Medvedev, 2009). 95–97 – Male, holotype (7.0 mm). 95 – dorsal view; 96 – labels; 97 – head and pronotum. 98–100 – Female, paratype (9.3 mm). 98 – dorsal view; 99 – ventral view; 100 – labels.

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.