Theopea sabahensis, Lee & Bezdĕk, 2019

Lee, Chi-Feng & Bezdĕk, Jan, 2019, Revision of the genus Theopea Baly (Coleoptera: Chrysomelidae: Galerucinae) in Sundaland and the Philippines: Redefinition of the genus, Zootaxa 4683 (4), pp. 451-507 : 476

Theopea sabahensis sp. nov.

( Figs 11 D–11F, 13)

Types (n= 74). Holotype ♂ ( BMNH), MALAYSIA. Sabah. Near Gum Gum, Lower Kinabatangan , VI.2005, leg. H. Takano & T. Owen-Edmunds. Paratypes. 18♂♂, 23♀♀ ( BMNH), same data as holotype; INDONESIA. South Kalimantan : 1♂, 2♀♀ ( JBCB), Kandagan distr. , 17 km NE of Loksado vill., 3–22.IX.1997, leg. S. Jákl ; MALAYSIA. Sabah: 4♂♂, 4♀♀ ( BMNH), Bettotan, Nr. Sandakan , 22.VII.–9.VIII.1927, leg. C. B. K. & H. M. P .; 11♂♂, 7♀♀ ( BMNH), Samawang, nr. Sandakan , 9–17.VII.1927, leg. C. B. K. & H. M. P .; 1♂, 1♀ ( USNM), Sandakan , leg. Baker ; 1♂ ( EUMJ), Sepilok , 5–11.VIII.1983, leg. N. Ohbayashi.

Description. Length 6.0– 6.7 mm, width 2.4–2.7 mm. General color ( Figs 11 D–11F) metallic green; antennomeres I–III greenish black, IV–VIII black, IX–XI white or pale yellow. Antennae filiform ( Fig. 13A ) in males, length ratios of antennomeres I–XI 1.0: 0.3: 0.8: 0.9: 0.9: 0.9: 0.9: 0.8: 0.8: 0.7: 0.9, length to width ratios of antennomeres I–XI 3.3: 1.3: 3.0: 3.5: 3.1: 3.1: 3.1: 3.0: 3.1: 3.0: 5.6; shorter in females ( Fig. 13B ), length ratios of antennomeres I–XI 1.0: 0.3: 0.7: 0.8: 0.8: 0.7: 0.7: 0.7: 0.7: 0.6: 0.8, length to width ratios of antennomeres I–XI 3.3: 1.5: 3.1: 3.4: 3.4: 2.9: 2.7: 2.7: 3.1: 2.8: 3.8. Elytra elongate and parallel-sided, 1.8x longer than wide; disc with dense, coarse punctures, arranged into longitudinal rows, with one weak longitudinal ridge between two longitudinal rows of punctures, three or four ridges near suture basally abbreviated. Tarsomeres I of front legs swollen in males; subparallel in females. Aedeagus ( Figs 13 C–13E) extremely slender, 10.1x longer than wide; sides widest at middle, gradually narrowed towards basal 1/4, abruptly narrowed subapically, apex truncate; tectum well sclerotized, basally broadened; moderately curved in lateral view; apex with short slit from apex to apical 1/10, basal notch closed except for apex; triangular sclerites absent; internal sac with one median, elongate sclerite, parallel-sided, apically tapering, with one longitudinal row of long setae along sides of median sclerite, with one pair of lateral clusters of stout setae located subapically, and one pair of elongate sclerites, apices acute. Gonocoxae ( Fig. 13G ) elongate, widest at apical 1/6, both gonocoxae combined together from basal 1/7 to apical 1/6; apices narrowly rounded, each gonocoxa with eight setae along outer margin from apex to apical 1/6; with one pair of short lateral processes at basal 2/5. Ventrite VIII ( Fig. 13F ) elongate and well sclerotized; disc with several long setae laterally and near apical margin, and with dense, short setae along apical margin; spiculum extremely slender. Receptacle of spermatheca ( Fig. 13H ) strongly swollen; pump slender and strongly curved; proximal spermathecal duct deeply inserted into receptacle, narrow and short.

Variations. Specimens from South Kalimantan have four apical white antennomeres.

Diagnosis. Members of this new species can be separated from others by the metallic green bodies (metallic blue in others), three apical white apical antennomeres (four apical white apical antennomeres in T. lui sp. nov., white antennomeres IV–XI in T. guoi sp. nov.). The aedeagi of males of T. sabahensis sp. nov. are similar to those of T. lui sp. nov. in possessing apically narrowed and truncate apices (wide apices in T. flavipalpis , rounded in T. guoi sp. nov.) and medially widened tectum (apically tapering tectum in others), but differing by the absence of a longitudinal row of hook-like setae near the apex of the internal sac (presence of such hook-like setae in T. lui sp. nov.).

Etymology. The species name is named after the type locality.

Distribution. Indonesia: Kalimantan, East Malaysia (Sabah).

Figures

FIGURE 11. Habitus of Theopea lui sp. nov. and T. sabahensis sp. nov. 11A. T. lui sp. nov., male, dorsal view; 11B. Same, ventral view; 11C. T. lui sp. nov., female, dorsal view; 11D. T. sabahensis sp. nov., male, dorsal view; 11E. Same, ventral view; 11F. T. sabahensis sp. nov., female, dorsal view.

FIGURE 13. Diagnostic characters of Theopea sabahensis sp. nov. 13A. Antenna, male; 13B. Antenna, female; 13C. Aedeagus, dorsal view; 13D. Aedeagus, lateral view; 13E. Aedeagus, ventral view; 13F. Abdominal ventrite VIII; 13G. Gonocoxae; 13H. Spermatheca.