Euphitrea tsoui, Lee, 2025

Euphitrea tsoui sp. nov.

Figs 2 D View Figure 2 , 5 View Figure 5 , 7 D – F View Figure 7 , 9 View Figure 9

Neorthaea flavicornis : Chûjô 1935: 473 (part).

Type material.

Holotype • ♂ ( TARI), Taiwan. Taitung: Imalintao (依麻林道), 4.II.2008, leg. M.-H. Tsao (= Tsou) . Paratypes • 2 ♂, 12 ♀ ( TARI), same data as holotype ; Kaohsiung • 1 ♂ ( TARI), Tonalintao (多納林道), 3.II.2013, leg. B.-X. Guo ; Pingtung • 2 ♂, 1 ♀ ( TARI), Koshun (= Henchun , 恆春), 25.IV.–25.V.1918, leg. J. Sonan • 1 ♀ ( TARI), Machia (瑪家), 11.III.2013, leg. Y.-T. Chung • 5 ♂, 3 ♀ ( TARI), same locality, 17.III.2013, leg. W.-C. Liao • 2 ♂, 4 ♀ ( TARI), Shouka (壽卡), at Shihtzu township (獅子鄉), 10.XI.2012, leg. J.-C. Chen • 1 ♂, 3 ♀ ( TARI), D (T) ahanshan (大漢山), 18.VII.2007, leg. C.-F. Lee • 1 ♂, 1 ♀ ( TARI), same but with “ 26.III.2013 ” • 1 ♂ ( TARI), same locality, 18.V.2009, leg. M.-L. Jeng • 3 ♂, 3 ♀ ( TARI), same locality, 16.VI.2011, leg. J.-C. Chen • 4 ♀ ( TARI), same but with “ 10.IV.2012 ” • 3 ♂, 1 ♀ ( TARI), same locality, 14.VIII.2011, leg. Y.-T. Wang • 3 ♀ ( TARI), same locality, 6.IV.2013, leg. W.-C. Liao • 1 ♂ ( TARI), same but with “ 25.X.2014 ” • 2 ♂, 1 ♀ ( TARI), same but with “ 13.VI.2015 ” • 1 ♂ ( TARI), same locality, 4–5.VI.2013, leg. K. Takahashi • 1 ♂ ( TARI), same locality, 29.VI.2013, leg. B.-X. Guo • 1 ♀ ( TARI), same locality, 10.VII.2013, leg. Y.-T. Chung • 1 ♂, 1 ♀ ( TARI), same but with “ 12.IX.2022 ” • 1 ♀ ( TARI), same locality, Malaise trap, 15.III.–3.IV.2020, leg. Y.-C. Chiu • 1 ♂ ( TARI), same but with “ 2–6.VI.2020 ” • 1 ♂, 1 ♀ ( TARI), same but with “ 6.VI.–25.VI.2020 ” • 1 ♀ ( TARI), same but with “ 25.VI.–24.VII.2020 ” • 1 ♀ ( TARI), Taiwu (泰武), 27.IV.2023, leg. Y.-T. Chung • 1 ♀ ( TARI), Wutai (霧台), 9.V.2009, leg. U. Ong ; Taitung • 1 ♂, 2 ♀ ( TARI), Chipen (知本), 17–18.II.1982, leg. L. Y. Chou & K. C. Chou • 1 ♂, 1 ♀ ( TARI), same locality, 22.I.2013, leg. B.-X. Guo • 1 ♂, 1 ♀ ( TARI), same locality, 23.I.2013, leg. Y.-T. Chung • 2 ♀ ( TARI), Taimali (太麻里), 15.I.2009, leg. C.-F. Lee • 1 ♂, 1 ♀ ( TARI), Taito (= Taitung, 台東), 25.II.–27.III.1919, leg. S. Inamura • 2 ♀ ( NHMUK), same but with “ leg. S. Inamura, J. Sonan, M. Yoshio ” . Specimens collected by Sonan and Inamura were misidentified as E. flavicornis by Chûjô (1935).

Description.

Length 3.2–3.5 mm, width 2.2–2.5 mm ( n = 87). General color blackish brown or dark reddish brown (Fig. 7 D – F View Figure 7 ); antennae, legs, and mouthparts yellow but antennae more or less darkened; elytra dark metallic blue. Frontal ridge flat. Furrows lateral to vertex shallow and short, apically reaching or slightly exceeding apical margins of eyes (Fig. 2 D View Figure 2 ). Antennae (Fig. 9 A View Figure 9 ) filiform in males, ratios of lengths of antennomeres I – XI 1.0: 0.5: 0.5: 0.4: 0.6: 0.6: 0.7: 0.7: 0.7: 0.6: 0.8; ratios of length to width from antennomeres I – XI 3.3: 2.1: 2.3: 2.5: 2.7: 2.9: 3.0: 2.8: 2.6: 2.4: 3.0; similar in females, ratios of lengths of antennomeres I – XI (Fig. 9 B View Figure 9 ) 1.0: 0.6: 0.5: 0.6: 0.6: 0.6: 0.7: 0.7: 0.7: 0.6: 0.9; ratios of length to width from antennomeres I – XI 2.9: 2.4: 2.7: 2.6: 3.1: 2.8: 2.8: 2.6: 2.6: 2.4: 3.0. Pronotum 1.8–1.9 × wider than long; disc shining, with dense, coarse punctures, convex; lateral margins rounded; apical margins concave; basal margin medially convex. Elytra 1.1 × longer than wide; disc with coarse punctures arranged into paired longitudinal lines, with fine punctures between coarse punctures; lateral margins strongly rounded, widest at basal 1 / 4; humeral calli well developed, hind wings normal. Tarsomeres I of front and middle legs slightly swollen and asymmetrical in males (Fig. 9 G View Figure 9 ); normal in females (Fig. 9 H View Figure 9 ). Apical margin of abdominal ventrite V in males trilobed, notches shallow; apical margin of abdominal ventrite V broadly rounded in females. Aedeagus (Fig. 9 C, D View Figure 9 ) wide, ~ 4.0 × longer than wide; parallel-sided, moderately apically narrowed at apical 1 / 7, apex narrowly rounded; slightly curved in lateral view; tectum membranous. Endophallic spiculae reduced. Gonocoxae (Fig. 9 E View Figure 9 ) longitudinal and connected at base; gonocoxa approximate, apically narrow; apex narrowly rounded or truncate; with eight long apical setae. Ventrite VIII (Fig. 9 F View Figure 9 ) well sclerotized and small, several short setae arranged into transverse line along apical margin, apical margin rounded, with three long setae at sides, spiculum extremely long. Spermathecal receptaculum (Fig. 9 I View Figure 9 ) slightly swollen; pump wide and curved; sclerotized spermathecal duct short beyond spermathecal gland, base of spermathecal gland enlarged and sclerotized.

Diagnosis.

Adults of Euphitrea tsoui sp. nov. are characterized by their transversely oval bodies with elytra 1.1 × longer than wide (oval bodies with elytra> 1.1 × longer than wide in others). In addition, some genital characters are diagnostic including wider aedeagi (Fig. 9 C View Figure 9 ) (slenderer aedeagi in E. flavicornis (Fig. 3 C View Figure 3 ) and E. jungchani sp. nov. (Fig. 8 C View Figure 8 )) and slightly swollen spermathecal receptaculum (Fig. 9 I View Figure 9 ) (swollen spermathecal receptaculum in E. flavicornis (Fig. 3 C View Figure 3 ) and E. houjayi sp. nov. (Fig. 6 C View Figure 6 )).

Food plants.

Urticaceae : Debregeasia orientalis C. J. Chen ; Gonostegia hirta (Blume) Miq.

Etymology.

This new species is named for Mei-Hua Tsou (曹美華), the first person to collect specimens.

Distribution.

Southern Taiwan. This species is restricted to the Hengchun Peninsula (Fig. 5 View Figure 5 ).