Shairella guoi 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 : 499-501

Shairella guoi Lee & Beenen , sp. nov.

( Figs 7–8 )

Type locality. Taiwan: Kaoshiung County, Tienchih (Ŧè), 23°16’37”N, 120°55’01”E, 2200 m.

Types (n= 27). Holotype ♂ ( TARI), Kaohsiung: Tienchih (Ŧè), 17.V.2015, leg. B.- X. Guo . Paratypes: 3♂, 2♀ ( TARI), same data as holotype ; 10♂, 9♀ ( TARI, RBCN), Kueiku (Ñê), 11.VI.2015, leg. C.- F. Lee ; 2♀ ( TARI), Kuanshanyakou (DƜ ḄŊ), 30.VII.2015, leg. C.- F. Lee.

Males ( Figs 7 A–7C). Length 4.3–4.6 mm; width 2.5–2.7 mm. Antenna ( Fig. 8 A) long, filiform, about 1.2x longer than body, length ratios of antennomeres I–XI 1.0: 0.4: 0.8: 0.9: 0.8: 0.8: 0.8: 0.8: 0.8: 0.7: 0.8, length to width ratios of antennomeres I–XI 3.2: 1.9: 3.6: 4.2: 3.6: 4.1: 4.0: 4.1: 4.5: 4.1: 4.8. Elytra strongly broadened apically; about 1.1x longer than wide; surface with sparse, fine punctures. Apical margin of last abdominal ventrite with two well developed incisions. Penis ( Figs 8 C–8D) elongate, about 6.9x longer than wide, parallel-sided, apically tapering from apical 1/6, strongly curved in lateral view; endophallic sclerite short, about 0.5x as long as penis, slender and longitudinal, apical margin medially depressed, with dense short hairs along lateral margin at apical 1/3, bifurcate at basal 1/4.

Females ( Figs 7 D–7F). Length 5.0– 5.3 mm, width 3.2–3.3 mm. Antenna extremely long, filiform, as long as body, length ratios of antennomeres I–XI 1.0: 0.3: 0.7: 0.7: 0.7: 0.7: 0.8: 0.7: 0.7: 0.7: 0.7, length to width ratios of antennomeres I–XI 3.5: 1.5: 2.9: 3.3: 4.1: 4.0: 4.4: 3.9: 4.1: 3.9: 4.3. Elytra strongly widened apically; about 1.0–1.1x longer than wide; surface with sparse, fine punctures. Apical margin of last abdominal ventrite truncate. Gonocoxae ( Fig. 8 E) longitudinal and narrow, 3.8x longer than wide, conjoined from base to middle, slightly narrowed at apical 1/3, apices rounded, each gonocoxa with eight elongate setae. Ventrite VIII ( Fig. 8 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. 8 G) slender, as wide as pump, hardly separated from pump; pump broad and strongly curved, apex broadly rounded, apex with transverse, short sclerite, size variable ( Figs 8 H– 8I); 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. The new species is dedicated to Mr. Bo-Xin Guo, who collected the type specimens.

Distribution. Vicinity along western 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 7. Habitus of Shairella guoi sp. nov. 7 A. Male, dorsal view; 7 B. Same, ventral view; 7 C. Same, lateral view; 7 D. Female, dorsal view; 7 E. Same, ventral view; 7 F. Same, lateral.

FIGURE 8. Diagnostic characters of Shairella guoi sp. nov. 8 A. Antenna, male; 8 B. Antenna, female; 8 C. Penis, dorsal view; 8 D. Penis, lateral view; 8 E. Gonocoxae; 8 F. Abdominal ventrite VIII; 8 G. Spermatheca; 8 H. Apex of pump, dorsal view; 8 I. Same, variation.