Shairella motienensis Lee & Beenen

Lee, Chi-Feng & Beenen, Ron, 2017, Revision of the genus Shairella Chûjô, 1962 (Coleoptera: Chrysomelidae: Galerucinae) from Taiwan, with descriptions of five new species, Zootaxa 4268 (4), pp. 489-507 : 501-503

Shairella motienensis Lee & Beenen , sp. nov.

( Fig. 9 )

Type locality. Taiwan: Taitung County, Motien (=Ŧ), 23°11’35”N, 121°01’24”E, 1500 m.

Types (n= 54). Holotype ♂ ( TARI), Taitung: Motien (=Ŧ), 20.VI.2011, leg. C.- F. Lee . Paratypes: 24♂, 8♀ ( TARI, RBCN), same data as holotype ; 3♂ ( TARI), Liyuan (Mḋ), 23.VI.2010, leg. M.- H. Tsou ; 1♂ ( TARI), same locality, 3.X.2010, leg. M.- H. Tsou ; 2♂, 3♀ ( TARI), same locality, 19.VI.2013, leg. C.- F. Lee ; 8♂, 4♀ ( TARI), same locality, 24.VII.2013, leg. C.- F. Lee.

Males. Length 4.6–5.1 mm; width 2.7–3.1 mm. Antenna ( Fig. 9 A) long, filiform, about 1.3x longer than body, length ratios of antennomeres I–XI 1.0: 0.4: 0.8: 0.9: 0.9: 0.9: 0.9: 0.8: 0.9: 0.8: 0.9, length to width ratios of antennomeres I–XI 3.3: 1.8: 3.2: 3.7: 4.0: 4.2: 4.2: 4.5: 5.0: 4.8: 5.2. Elytra apically, moderately broadened; about 1.2x longer than wide; surface with sparse, fine punctures. Apical margin of last abdominal ventrite with two well developed incisions. Penis ( Figs 9 C–9D) elongate, about 5.3x longer than wide, parallel-sided, apex lanceolate, moderately curved in lateral view; endophallic sclerite long, about 0.7x as long as penis, slender and longitudinal, apically tapering, with dense short hairs along lateral margin in apical 1/4, bifurcate at basal 1/4.

Females. Length 5.4–6.4 mm, width 3.5–3.9 mm. Antenna ( Fig. 9 B) long, filiform, 1.2x longer than body, length ratios of antennomeres I–XI 1.0: 0.4: 0.7: 0.9: 0.9: 0.8: 0.9: 0.8: 0.8: 0.7: 0.9, length to width ratios of antennomeres I–XI 3.6: 1.2: 2.9: 4.1: 4.4: 4.7: 4.8: 5.8: 5.7: 5.2: 6.1. Elytra strongly broadened apically; about 1.1x longer than wide; surface with sparse, fine punctures. Apical margin of last abdominal ventrite slightly convex at middle ( Fig. 9 G). Gonocoxae ( Fig. 9 E) longitudinal and broad, 3.0x longer than wide, conjoined from base to middle, slightly narrowed at apical 1/3, apices rounded, each gonocoxa with seven or eight elongate setae. Ventrite VIII ( Fig. 9 F) with only apical area and spiculum sclerotized; with dense elongate setae inside apical sclerotized area, apical margin rounded; spiculum elongate and broad. Receptacle of spermatheca ( Fig. 9 K) slender, as wide as pump, hardly separated from pump; pump broad, strongly curved, apex broadly rounded, apex with transverse, short sclerite, size extremely variable ( Figs 9 H–9J); proximal spermathecal duct hardly separated from receptacle, apically narrowed.

Differential diagnosis. See diagnosis of Shairella aeneipennis Chûjô.

Host plant. Clinopodium laxiflorum var. taiwanianum Hsieh & Huang (Labiatae) . Etymology. This new species is named after the type locality.

Distribution. Vicinity along eastern half of South Cross-Island Highway (ĦḂḦR) ( Fig. 3 A).

Figures

FIGURE 3. Distribution map of Shairella species and Clinopodium laxiflorum var. taiwanianum. 1 A. Solid line: 1000 m, broken line: 2000 m. Red spots: S. motienensis sp. nov.; blue spots: S. aeneipennis Chûjô; gray spots: S. tsoui sp. nov.; pink spot: S. cheni sp. nov.; green spot: S. chungi sp. nov.; yellow spot: S. guoi sp. nov.; 1 B. Clinopodium laxiflorum var. taiwanianum (after Hsieh & Huang 1999).

FIGURE 9. Diagnostic characters of Shairella motienensis sp. nov. 9 A. Antenna, male; 9 B. Antenna, female; 9 C. Penis, dorsal view; 9 D. Penis, lateral view; 9 E. Gonocoxae; 9 F. Abdominal ventrite VIII; 9 G. Apical margin of abdominal ventrite V; 9 H. Apex of pump, dorsal view; 9 I. Same, variation; 9 J. Same, variation; 9 K. Spermatheca.