Siemssenius jungchani Lee

Lee, Chi-Feng, 2016, Review of the genus Siemssenius Weise, 1922 (Coleoptera: Chrysomelidae: Galerucinae) from Taiwan, with descriptions of five new species, Zootaxa 4158 (3), pp. 367-384 : 375-376

Siemssenius jungchani Lee , sp. nov.

( Figs 7 A–7F)

Type locality. Pingtung county, Tahanshan (大漢山), 22°24’27”N, 120°45’23”E, 1400 m.

Type material (n= 5). Holotype ♂ ( TARI): Pingtung: Tahanshan (大漢山), 19.V.2015, leg. Y.- T. Chung . Paratypes: 1♀ ( TARI), same locality, 3.V.2011, leg. J.- C. Chen ; 1♂ ( TARI), same locality, 31.III.2012, leg. W.- C. Liao ; 1♂ ( TARI), Jinshuiying (浸水營, = Tahanshan), 12.IV.2012, leg. C.- F. Lee ; 1♀ ( TARI), same locality, 26.VI.2012, leg. Y.- T. Chung.

Description. Aedeagus concave and narrow, sides subparallel; apico-lateral angles obtusely angulate, wide in lateral view, bases of apico-lateral angles smooth; apical margin with a long, broad median tube-like process, wide in lateral view, apex slightly and medially depressed; dorsal process subapically and slightly swollen in dorsal and lateral views, apex pointed in lateral view ( Figs 7 A–7B). Ventrite V not modified in female, apical margin narrowly rounded ( Fig. 7 C). Gonocoxae reduced. Ventrite VIII ( Fig. 7 D) heart-shaped, with extremely short spiculum, with scarce elongate setae along apical margins of triangulate processes. Tergite VIII ( Fig. 7 E) with apex rounded and with sparse setae on disc. Receptacle of spermatheca ( Fig. 7 F) weakly swollen, barely separated from pump, pump much narrower and longer, sharply curved; proximal spermathecal duct long and narrow.

Diagnosis. Siemssenius jungchani sp. nov. is similar to S. yuae sp. nov. in possessing the smooth bases of apico-lateral angles of aedeagus, and the rounded apex of the abdominal tergite VIII. But S. jungchani sp. nov. has the subtruncate and slightly depressed apex of broad median tube-like process of apical margin of aedeagus (rounded apex of the slender median tube-like processes in S. yuae sp. nov.) ( Figs 7 A, 7B, 11A, 11B).

Host plant. Unknown.

Etymology. This new species is named after Mr. Jung-Chan Chen, who is a member of TCRT and the first to collect this new species.

Distribution. Only known from the type locality, Tahanshan (大漢山), lowlands in southern Taiwan ( Fig. 4 ).

Figures

FIGURE 4. Distribution map of Taiwanese species of Siemssenius, solid line: 1000 m, broken line: 2000 m. Red spots: S. rufipennis (Chûjô); blue spots: S. tsoui sp. nov; gray spots: S. liui sp. nov.; pink spots: S. yuae sp. nov.; orange spots: S. metallipennis (Chûjô) and S. rufipennis (Chûjô); green spot: S. jungchani sp. nov.; yellow spot: S. cheni sp. nov.

FIGURES 7. Diagnostic characters of Siemssenius jungchani Lee, sp. nov. 7 A. Penis, lateral view; 7 B. Penis, dorsal view; 7 C. Abdominal ventrite V, female; 7 D. Abdominal ventrite VIII, female; 7 E. Abdominal tergite VIII, female; 7 F. Spermatheca.