Euphitrea jungchani, Lee, 2025

Euphitrea jungchani sp. nov.

Figs 2 C View Figure 2 , 5 View Figure 5 , 7 A – C View Figure 7 , 8 View Figure 8

Type material.

Holotype • ♂ ( TARI): Taiwan. Hualien: Juisui (瑞穗), 27.VI.2013, leg. Y.-T. Chung ; Paratypes • 1 ♂ ( TARI), same data as holotype • 4 ♂ ( TARI), same locality, 17.IX.2024, leg. J.-C. Chen ; 1 ♂ ( NMNS), Fuyuan Forest Rec. Area (富源森林遊樂區), 27.V.1997, leg. C. W. & L. B. O’Brien • 1 ♂, 1 ♀ ( TARI), Wanjung (萬榮), 11.VI.2011, leg. M.-H. Tsou • 4 ♀ ( TARI), same locality (= Wanrong trail, 萬榮林道), 7.IX.2024, leg. J.-C. Chen • 2 ♂, 3 ♀ ( TARI), same but with “ 16.IX.2024 ” .

Description.

Adults. Length 3.2–3.7 mm, width 1.8–2.1 mm ( n = 18). General color dark metallic bronze (Fig. 7 A – C View Figure 7 ); antennae, legs, and mouthparts yellow. Furrows lateral to vertex deep but short, apically slightly exceeding apical margins of eyes (Fig. 2 C View Figure 2 ). Antennae (Fig. 8 A View Figure 8 ) filiform in males, ratios of lengths of antennomeres I – XI 1.0: 0.5: 0.5: 0.5: 0.5: 0.6: 0.7: 0.7: 0.7: 0.7: 0.9; ratios of length to width from antennomeres I – XI 3.0: 2.1: 2.6: 2.4: 2.7: 2.5: 2.7: 2.7: 2.8: 2.6: 4.0; similar in females, ratios of lengths of antennomeres I – XI (Fig. 8 B View Figure 8 ) 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 3.0: 2.2: 2.8: 2.3: 2.8: 2.6: 2.6: 2.6: 2.6: 2.3: 3.0. Pronotum 1.5–1.5 × wider than long; disc shining, with dense, coarse punctures, convex; lateral margins rounded; apical margins concave; basal margin medially convex. Elytra 1.3–1.4 × 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 / 3; humeral calli well developed, hind wings normal. Tarsomeres I of front and middle legs slightly swollen and asymmetrical in males (Fig. 8 G View Figure 8 ); normal in females (Fig. 8 H View Figure 8 ). Apical margin of abdominal ventrite V in males trilobed, notches shallow; apical margin of abdominal ventrite V broadly rounded in females. Aedeagus (Fig. 8 C, D View Figure 8 ) wide, ~ 4.4 × longer than wide; parallel-sided, moderately apically narrowed at apical 1 / 7, apex widely rounded; moderately curved in lateral view, and apex curved downwards; tectum sclerotized, apex pointed. Endophallic spiculae reduced. Gonocoxae (Fig. 8 E View Figure 8 ) curved and connected at base; gonocoxa separated from each other, apically narrow; apex narrowly rounded or truncate; with eight long apical setae. Ventrite VIII (Fig. 8 F View Figure 8 ) well sclerotized and several small, short setae arranged in a transverse line along apical margin, apical margin truncate but slightly concave at middle, with two or three long setae at sides, spiculum long. Spermathecal receptaculum (Fig. 8 I View Figure 8 ) slightly swollen; pump wide and curved; sclerotized spermathecal duct short beyond spermathecal gland, base of spermathecal gland enlarged and sclerotized.

Diagnosis.

Adults of Euphitrea jungchani sp. nov. are similar to those of E. flavicornis , with normal humeral calli on elytra (reduced in E. houjayi sp. nov.), and oval bodies and elytra 1.2–1.3 longer than wide (transversely oval bodies and elytra 1.1 × longer than wide in E. tsoui sp. nov.). In addition to the allopatric distributions of both species, some genital structures are diagnostic, including curved apices of aedeagi in lateral view (Fig. 8 D View Figure 8 ) and sclerotized tectum (Fig. 8 C View Figure 8 ) (aedeagi of E. flavicornis straight in lateral view (Fig. 3 D View Figure 3 ) and membranous tectum (Fig. 3 C View Figure 3 )), slightly swollen spermathecal receptaculum (moderately swollen in E. flavicornis ), and comparatively wider apices of abdominal ventrite VIII in females (Fig. 8 I View Figure 8 ) (comparatively narrower apices of abdominal ventrite VIII in females of E. flavicornis , Fig. 3 I View Figure 3 ).

Food plants.

Urticaceae : Oreocnide pedunculata (Shirai) Masam.

Etymology.

This new species is named for Jung-Chan Chen (陳榮章), the first person to collect specimens.

Distribution.

Eastern Taiwan. Specimens were collected from three localities in Hualien County, allopatric relative to the distribution of E. flavicornis (Fig. 5 View Figure 5 ).