Theopea tsoui, Lee & Bezdĕk, 2019
publication ID |
https://doi.org/ 10.11646/zootaxa.4683.4.1 |
publication LSID |
lsid:zoobank.org:pub:982FE3FB-5610-44A1-AAE3-659B28F45307 |
DOI |
https://doi.org/10.5281/zenodo.4505277 |
persistent identifier |
https://treatment.plazi.org/id/03FF87D6-FFBB-4464-FF6B-AF8BFE15F9AA |
treatment provided by |
Plazi |
scientific name |
Theopea tsoui |
status |
sp. nov. |
Theopea tsoui sp. nov.
( Figs 19 View FIGURE 19 D–19F, 23)
Types (n= 5). Holotype ♂ ( BMNH), BRUNEI. Temburong District, Kula Belalong FSC, 115°7’E 4°34’N, 8.II.1992, leg. N. Mawdsley. GoogleMaps Paratypes. 1♂ ( BMNH), same data as holotype GoogleMaps ; 1♀ ( BMNH), Temburong District, Kula Belalong FSC, 115°7’E 4°34’N, 19.V.1991, leg. N. Mawdsley GoogleMaps ; 1♀ ( BMNH), same but with “ 26.VII.1991 ” ; 1♂ ( JBCB), Bru- nei Darussalam, Ulu Temburong N.P., 130 m, 4°32’49”S 115°9’25”E, 12–19.II.2015, leg. P. Kočárek. GoogleMaps
Description. Length 8.2–8.4 mm, width 3.1–3.2 mm. General color ( Figs 19 View FIGURE 19 D–19F) purplish black; antenna black except antennomeres X–XI white or pale yellow. Antennae filiform in males, except antennomeres VIII–X strongly swollen, X with a broad lateral process at middle ( Fig. 23A View FIGURE 23 ), length ratios of antennomeres I–XI 1.0: 0.3: 0.7: 1.0: 1.0: 1.0: 1.3: 1.1: 1.1: 0.8: 1.1, length to width ratios of antennomeres I–XI 3.1: 1.4: 2.6: 3.3: 3.4: 2.7: 2.5: 2.3: 2.3: 2.1: 4.6; filiform in females ( Fig. 23B View FIGURE 23 ), antennomeres VI–VIII slightly swollen, length ratios of antennomeres I–XI 1.0: 0.3: 0.6: 0.8: 0.8: 0.8: 0.9: 0.8: 0.8: 0.7: 1.0, length to width ratios of antennomeres I–XI 3.3: 1.6: 2.6: 3.2: 3.0: 2.6: 3.0: 2.8: 3.1: 3.3: 4.6. Elytra elongate and parallel-sided, 1.8x longer than wide; disc with reduced reticulate microsculpture, dense, coarse punctures, arranged into longitudinal rows, with one weak longitudinal ridge between two longitudinal rows of punctures, ridges near suture abbreviated. Tarsomeres I of front legs swollen in males; subparallel in females. Aedeagus ( Figs 23 View FIGURE 23 C–23E) slender, 8.4x longer than wide; parallel-sided, but narrowed at middle; apically narrowed, apex with median shallow, narrow notch, apices narrowly rounded; tectum well sclerotized, as wide as aedeagus, very long, about 0.5x as long as aedeagus, apex broadly rounded; straight from apex to middle in lateral view, and then slightly curved, apex narrowly rounded; ventral surface with deep notch from apex to middle, mesally extending and approximate at apical 1/10; triangular sclerites small; internal sac with one median, elongate sclerite, as wide as aedeagus but basally narrowed, with one pair of small hook-like sclerites near apex, with one pair of large apically tapering sclerites near base. Gonocoxae ( Fig. 23G View FIGURE 23 ) elongate, widest at apical 1/7, both gonocoxae combined together from basal 1/5 to apical 1/7; 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. 23F View FIGURE 23 ) 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. 23H View FIGURE 23 ) strongly swollen; pump slender and strongly curved; proximal spermathecal duct deeply inserted into receptacle, narrow and short.
Diagnosis. Specimens of T. tsoui sp. nov. are similar to those of T. kedenburgi with only two apical white antennomeres, lateral expansion only on antennomere X in males, and reduced ridges near suture on the elytra, but they differ from those of T. kedenburgi by the strongly swollen antennomeres VIII–X in males (moderately swollen in T. kedenburgi ). Females of T. tsoui possess slightly swollen antennomeres VI–VIII (no swollen antennomeres in females of T. kedenburgi ). The aedeagi of males of T. tsoui sp. nov can be separated from those of T. kedenburgi by the elongate tectum, 0.5x as long as aedeagus (short tectum in T. kedenburgi , 0.2x as long as aedeagus), and medially narrowed aedeagus (parallel-sided aedeagus in T. kedenburgi ).
Etymology. This new species is named after Mr. Mei-Hua Tsou, a member of TCRT for his contribution to diversity of leaf beetles.
Distribution. Brunei.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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