Clitenella unicolor Samoderzhenkov, 1988

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 : 853-856

Clitenella unicolor Samoderzhenkov, 1988 ( Figs. 4D–F , 5 , 6 )

Clitenella unicolor Samoderzhenkov 1988: 73 ( Vietnam).

Clitenella sukarnoi Mohamedsaid 2001: 141 ( Indonesia: Bali). New synonym.

Types. Clitenella unicolor Samoderzhenkov. Holotype ♂ (ZIN, original designation) ( Fig. 4D ): “ SRV, Prov. Gialai-/ Contum , Buon-Loi ,/ 40 km N Ankhe [p]/28. [h] VI. 198 [p] 3 [h, w]// Holotypus [p, r]//rainforest (in Russian ) [p, w]// Grewia ?/( Tiliaceae ) [h, w]// Clitenella /unicolor/ Samoderzhenkov [h, w]// Clitenella /unicolor [h]/SAMODERZHENKOV [p, w]”. Paratypes: three paratypes at the ZIN share the same data as holotype (Alexey Moseyko, in litt., 12 March 2021); 1♀ (MCSN): “ SRV, Prov. Gia Lai-Con Tum/Son Lang, 50 km N Ankhe /Ha-Nung, [p]/25. VI. [h] 19 [p] 83 [h, w]//rainforest (in Russian) [p, w]// Paratypus [p, r]// Clitenella / unicolor Sam. [h]/ E. Samoderzhenkov det, [p, w]// Ex. coll. Medvedev / Acquisto XI. 1999 [p, w]//Museo Civico/di Genova [p, w]”.

Clitenella sukarnoi Mohamedsaid. Paratype: 1♂ (SEHU): “ Asah Panji / Lake Tamblingan /C. Bali 6 V/1998 H. Takizawa [p, w]// PARATYPE [p]/ Clitenella /sukarnoi n. sp. [h]/des. Mohamedsaid [p] 2001 [h, w]”.

Specimens Examined. 1♀ ( SEHU), same data as paratype; INDONESIA . 2♂♂, 3♀♀ ( SEHU), Sumbawa Is., XII.2002, leg. Detani.

Redescription. Length 7.2–9.1 mm, width 3.9– 4.9 mm. Body color ( Figs. 4D–F ) metallic green or blue, abdomen yellow. Eyes relatively small, interocular space 2.44–2.87× diameter of eye. Antennae moniliform in males ( Fig. 6A ), length ratios of antennomeres I–XI 1.0:0.6:0.8:0.7:0.8: 0.6:0.6:0.6:0.6:0.6:0.7, length-to-width ratios of antennomeres I–XI 2.5:1.8:2.4:2.0:1.8:1.6:1.6:1.5: 1.5:1.5:2.3; relatively smaller in females ( Fig. 6B ), antennomeres VI–X moniliform, length ratios of antennomeres I–XI 1.0:0.6:0.8:0.6:0.5:0.5:0.4:0.4: 0.4:0.5:0.6, length-to-width ratios of antennomeres I–XI 3.2:2.2:3.0:2.3:1.7:1.5:1.1:1.3:1.2:1.3:1.7. Pronotum 1.9× wider than long, disc with dense, coarse punctures, and denser fine punctures between coarse punctures; 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 1.5× longer than wide; disc with sparse, coarse and fine punctures, and extremely sparse white pubescence, with one pair of weak depressions at basal 1/3; epipleura abbreviated at apical 1/3. Abdomen: apical margin of abdominal ventrite 5 with semicircular impression at middle in males ( Fig. 6G ); straight in females ( Fig. 6H ); sternite VIII in females ( Fig. 6E ) transverse, medially slightly depressed; disc with dense, short apical setae; spiculum short. Male genitalia: aedeagus ( Figs. 6C, D ) slender in dorsal view, 5.3× longer than wide, asymmetric, slightly bent from base to middle, slightly and apically narrowed from apical 1/4 to 1/10, strongly narrowed subapically, apex narrowly rounded, curved at middle; strongly curved near base in lateral view; ostium membranous and longitudinal; primary endophallic sclerite short, 0.4× as long as aedeagus, with stout teeth along apical margin, secondary sclerite elongate, longer than primary sclerite, 1.3× as long as primary sclerite. Female genitalia: gonocoxae ( Fig. 6I ) longitudinal, wide, apically sclerotized, with dense, long setae along apical and lateral areas; receptacle of spermatheca ( Fig. 6F ) strongly swollen; pump short and strongly curved; sclerotized proximal spermathecal duct wide and short.

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

Distribution. Vietnam, Indonesia: Bali and Sumbawa (new record) islands.

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. 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. 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. 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.