Clitenella punctata LaboissiÈre, 1927

Lee, Chi-Feng & Bezdĕk, Jan, 2021, Taxonomic Notes on Clitenella Laboissière, 1927 (Coleoptera: Chrysomelidae: Galerucinae), with Redescription of Three Species, The Coleopterists Bulletin 75 (4), pp. 845-858 : 849-853

Clitenella punctata LaboissiÈre, 1927 ( Figs. 4C , 5 )

Clitenella punctata Laboissière 1927: 55 ( Vietnam); Wilcox 1971: 47 (catalogue); Samoderzhenkov 1988: 73 (key to species in Vietnam); Kimoto 1989b: 26 ( Thailand).

Galeruca yunnana Yang and Li in Yang et al. 1997a: 386 ( China: Yunnan). New synonym.

Clitenella yunnana : Zhang et al. 2009: 274.

Types. Clitenella punctata Laboissière. 1♀ (IRSB): “ TONKIN / Lac Tho /HOA-BINH/DE COOMAN [p, w]// Clitenella /punctata m/ topotype [p]/V. LABOISSIÈRE – DÉT.// Topo- type [h, w, red letters]//

cf.Ann. Soc. Ent. Fr., [p] XCVI, 1927/p. 55 [h, w]//R. Mus. Hist. Nat./Belg. I. G. 12.752 [p, w]”.

Galeruca yunnana Yang and Li. The holotype was deposited at the Institute of Zoology , Chinese Academy of Sciences, Beijing, China; not studied.

Specimens Examined. THAILAND. Khon Kaen: 1♀ ( RUMO) , Khon Kaen, 4.VIII.1980, leg. S. Azuma ; Nan: 1♂ ( JBCB), Doi Phuka Nat. Park , 28.IV–12.V.2002, leg. P. Průdek & M. Obořil.

Redescription. Length 7.5–8.1 mm, width 4.1– 4.5 mm. Body color ( Fig. 4C ) metallic blue; antennae, legs, and abdomen yellow. Eyes relatively small, interocular space 2.20–2.23× diameter of eye. Antennae filiform in males ( Fig. 5A ), length ratios of antennomeres I–XI 1.0:0.6:0.9:0.8:0.8:0.6:0.8: 0.7:0.7:0.7:1.0, length-to-width ratios of antennomeres I–XI 2.7:2.5:2.9:2.7:2.4:1.9:2.3:1.9:2.0:2.1: 3.4; relatively smaller in females ( Fig. 5B ), antennomeres VI–X moniliform, length ratios of antennomeres I–XI 1.0:0.6:0.7:0.7:0.7:0.6:0.6:0.6:0.6:0. 6:1.0, length-to-width ratios of antennomeres I–XI 2.6:2.0:2.5:2.3:2.2:1.8:2.0:1.9:2.0:2.1:3.1. Pronotum 2.0–2.1× wider than long, disc with sparse, coarse punctures, coarser laterally, sparser medially; with deep lateral depressions; lateral margins moderately rounded, apical and basal margins straight. Elytra elongate, parallel-sided from base to basal 1/5, then rounded, widest at apical 1/3; together 1.4× longer than wide; disc with sparse, coarse, and fine punctures, and extremely sparse white pubescence, with one pair of weak depressions in basal 1/3; epipleura abbreviated at apical 1/4. Abdomen: apical margin of abdominal ventrite 5 with angular impression at middle in males ( Fig. 5G ), followed by extremely shallow notch; straight in females ( Fig. 5H ); sternite VIII ( Fig. 5E ) in females transverse, moderately depressed medially; disc with dense, long apical setae; spiculum short. Male genitalia: aedeagus ( Figs. 5C, D ) slender in dorsal view, 5.1× longer than wide, asymmetric and parallel-sided from base to middle, strongly and apically narrowed from middle, apex narrowly rounded, curved at middle; strongly curved near base in lateral view; ostium membranous and longitudinal; primary endophallic sclerite long, 0.6× as long as aedeagus, with dense teeth at apex, secondary sclerite elongate but short, 0.4× as long as primary sclerite. Female genitalia: gonocoxae ( Fig. 5I ) longitudinal, basally connected, with dense, long setae along apical and lateral areas; receptacle of spermatheca ( Fig. 5F ) moderately swollen; pump long and strongly curved; sclerotized proximal spermathecal duct wide and short.

Diagnosis. Adults of C. punctata ( Fig. 4C ) are similar to those of C. unicolor ( Fig. 4D ) and C. fulminans ( Figs. 1C, F ) with metallic blue color. The former can be distinguished by the following combination of characters: yellow antennae and legs (metallic blue or green antennae and legs in others), sparse, coarse punctures on pronotum (dense, coarse punctures on pronotum in others), elytra with one pair of depressions at basal 1/3 (two pairs of depressions at middle in C. fulminans ), elytral epipleura abbreviated at apical 1/4 or 1/3 (elytral epipleura reaching apex in C. fulminans ), antennomeres VI–X slender in males ( Fig. 5A ), 1.9–2.3× longer than wide (shorter in males of C. unicolor [ Fig. 6A ], 1.5–1.6× longer than wide), also slender in females ( Fig. 5B ), 1.8–2.1× longer than wide (shorter in females of others [ Figs. 1B , 6B ], 1.1–1.5× longer than wide), asymmetric and medially curved aedeagus ( Fig. 5C ) (symmetric and parallel-sided aedeagus in C. fulminans [ Fig. 2C ]), moderately long primary endophallic sclerite, 0.6× as long as aedeagus ( Fig. 5D ) (extremely long primary endophallic sclerite, 0.9× as long as aedeagus in C. fulminans [ Fig. 2F ]; short primary endophallic sclerite, 0.4× as long as aedeagus in C. unicolor [ Fig. 6D ]), dense, tiny teeth on apical area of primary endophallic sclerite ( Figs. 5C, D ) (several teeth in longitudinal row near outer margin of ventral surface of primary endophallic sclerite in C. fulminans [ Figs. 2C–E ]; stout teeth along apical margin of primary endophallic sclerite in C. unicolor [ Figs. 6C, D ]), short secondary endophallic sclerite, 0.4× as long as primary sclerite ( Fig. 5D ) (extremely short secondary endophallic sclerite, 0.1× as long as primary sclerite in C. fulminans [ Fig. 2F ]; extremely long secondary endophallic sclerite, 1.3× as long as primary sclerite in C. unicolor [ Fig. 6D ]), moderately swollen receptacle and long pump of spermatheca ( Fig. 5F ) (slightly swollen receptacle and short pump of spermatheca in C. fulminans [ Fig. 2K ]; strongly swollen receptacle and short pump of spermatheca in C. unicolor [ Fig. 6F ]), and dense, long setae at sides of abdominal sternite VIII in females ( Fig. 5E ) (one row of long setae along apical margin of sternite VIII in females of C. fulminans [ Fig. 2E ]; dense, short setae at sides of sternite VIII in females of C. unicolor [ Fig. 6E ]).

Remarks. The dorsal habitus of C. yunnana illustrated by Yang et al. (1997a) and the aedeagus and pronotum of that species illustrated by Zhang et al. (2009) fit C. punctata , along with other diagnostic characters. We conclude that both taxa are conspecific.

Distribution. China (Yunnan), Thailand, Vietnam.

Figures

Fig. 4. Habitus of adult Clitenella species.A) C. ignitincta, female, dorsal view, B) Ditto, ventral view, C) C. punctata, male, dorsal view, D) Holotype of C. unicolor, dorsal view, E) C. unicolor, female, from Sumbawa Island, dorsal view, F) Ditto, ventral view.

Fig. 5. Diagnostic characters of Clitenella punctata. A) Antenna, male, B) Antenna, female, C) Penis, dorsal view, D) Penis, lateral view, E) Sternite VIII, female, F) Spermatheca, G) Ventrite 5, male, H) Ventrite 5, female, I) Gonocoxae.

Fig. 1. Habitus of adult Clitenella fulminans. A) Male, collected from Taiwan, dorsal view, B) Ditto, ventral view, C) Female, collected from Taiwan, blue color form, dorsal view, D) Male, collected from Laos, dorsal view, E) Ditto, ventral view, F) Male, collected from Laos, blue color form, dorsal view.

Fig. 6. Diagnostic characters of Clitenella unicolor. A) Antenna, male, B) Antenna, female, C) Penis, dorsal view, D) Penis, lateral view, E) Sternite VIII, female, F) Spermatheca, G) Ventrite 5, male, H) Ventrite 5, female, I) Gonocoxae.

Fig. 2. Diagnostic characters of Clitenella fulminans. A) Antenna, male, B)Antenna, female, C) Apex of penis, from China, dorsal view, D) Apex of primary endophallic sclerite, from Taiwan, dorsal view, E) Apex of primary endophallic sclerite, from Laos, dorsal view, F) Penis, from China, lateral view, G) Sternite VIII, female, H) Ventrite 5, male, I) Ventrite 5, female, J) Gonocoxae, K) Spermatheca.