Argopistes jungchani Lee, Chiang & Suenaga, 2024, sp. nov.

Argopistes jungchani sp. nov. Figs 11 A, B, 12 Type material examined. Holotype • ♂ (TARI). Taiwan. Pingtung: Jinshuiying (浸水營), 14. IV. 2021, leg. J. - C. Chen. Paratype • 1 ♀ (TARI), same but with “ 27. VI. 2012 ”. Diagnosis. Adults of this new species are easily recognized by their color pattern: black bodies with yellowish-brown lateral margins of pronotum and elytra; also, genitalic characters are diagnostic: tube-like apex of aedeagus similar to that of A. tsekooni but parallel-sided from near apex to middle (Fig. 12 C) (apically narrowed from near apex to middle (Fig. 9 C) in A. tsekooni), paired elongate tectum small, 0.76 as long as anterior opening (Fig. 12 C) (paired elongate tectum long, 0.85 as long as anterior opening (Fig. 9 C) in A. tsekooni), and anterior opening from apical 1 / 13–2 / 5 (Fig. 12 C) (anterior opening from apex to apical 2 / 5 (Fig. 9 C) in A. tsekooni); only two pair of long setae on apical margin of abdominal ventrite VIII (Fig. 12 E) in females (more than two pair of setae on apical margin of abdominal ventrite VIII in females of other species), and cylindrical gonocoxae (Fig. 12 G). Description. Length 3.5–3.6 mm, width 2.7–2.9 mm. Color (Fig. 11 A, B) blackish brown, sides of pronotum and elytra paled, tarsi, front femur and tibiae, and antennae yellowish brown. Pronotum broad, convex, lateral margin narrowly explanate; 2.3 × wider than long, disc with dense coarse punctures; lateral margin rounded, anterior margin strongly concave, posterior margin moderately convex. Elytra broadly oval, 1.1 × longer than wide, disc with fine punctures arranged into longitudinal lines, confused, dense, fine punctures present between longitudinal punctures. Male. Antenna filiform (Fig. 12 A), antennomere I much longer than others, approximate ratios of length of antennomeres I – XI 1.0: 0.5: 0.3: 0.5: 0.5: 0.5: 0.5: 0.5: 0.5: 0.5: 0.6; approximate ratios of length to width of antennomeres I – XI 4.4: 2.2: 1.9: 2.6: 2.3: 2.2: 1.9: 1.8: 1.7: 1.7: 2.6. Aedeagus (Fig. 12 C, D) parallel-sided, strongly and subapically narrowed, apex tube-like and extremely small; anterior opening small, ~ 0.30 as long as aedeagus, from apical 1 / 13–2 / 5; tectum composed of one pair of sclerotized processes, large, ~ 0.76 as long as anterior opening; wide and slightly curved in lateral view; paired processes apically curved in lateral view; endophallic sclerite laterally flattened, with basal processes slightly sclerotized. Female. Antenna (Fig. 12 B) much smaller than in males, ratios of length of antennomeres I – XI 1.0: 0.4: 0.3: 0.3: 0.3: 0.3: 0.3: 0.4: 0.4: 0.4: 0.6; ratios of length to width of antennomeres I – XI 4.2: 1.8: 1.8: 1.6: 1.7: 1.5: 1.5: 1.7: 1.6: 1.4: 2.3. Ventrite VIII (Fig. 12 E) membranous, only apical margin sclerotized, T-shaped, with two pairs of short setae at sides of apical margin, apical margin truncate, spiculum long. Spermathecal receptaculum (Fig. 12 F) much longer than pump, moderately swollen; pump slightly emarginate at inner side of base; spermathecal duct with long basal part, ramus rounded. Gonocoxae (Fig. 12 G) cylindrical and separated, base membranous, each gonocoxa symmetric, with dense long setae along apical and outer margin. Host plant. Unknown Biology. Unknown. Etymology. This new species is named for Jung-Chan Chen (陳榮章), the first person to collect specimens. Distribution. Only known from the type locality (Fig. 5).