Pyrrhalta tsoui, Bezděk & Lee, 2019

Bezděk, Jan & Lee, Chi-Feng, 2019, Revision of Pyrrhalta (Coleoptera: Chrysomelidae: Galerucinae) species with maculate elytra, Zootaxa 4664 (1), pp. 518-534 : 531-532

publication ID	https://doi.org/ 10.11646/zootaxa.4664.4.4
publication LSID	lsid:zoobank.org:pub:8DEC3A3C-193C-4DC4-A968-590F08ED3CD1
persistent identifier	https://treatment.plazi.org/id/9078F8BD-83C7-4CFC-9485-2146869FADA6
taxon LSID	lsid:zoobank.org:act:9078F8BD-83C7-4CFC-9485-2146869FADA6
treatment provided by	Plazi
scientific name	Pyrrhalta tsoui
status	sp. nov.

Treatment

Pyrrhalta tsoui sp. nov.

( Figs 7 View FIGURES 1–7 , 24 View FIGURES 22–24 , 36 View FIGURES 31–36 )

Type locality. Taiwan, Taitung County, Wulu .

Types examined. Holotype: ♂, “ Taiwan: Taitung / Wulu ( Îů ) / 09.VI.2011, leg. Uika Ong [w, p]” ( TARI) . Paratypes: 2 ♂♂ 9 ♀♀, same label data as in holotype ( TARI) ; 1 ♂, “ Taiwan: Hualien (19551) / Pilu ( Ḃñ ) / 31.V.2011, leg. M.-H. Tsou [w, p]” ( TARI) ; 6 ♀♀, “ Taiwan: Taitung (20420) / Litao ("ũ) / 20.VI.2011, leg. C.-F. Lee [w, p]” ( TARI) ; 2 ♀♀, “ Taiwan: Hsinchu / Chienshih ( ẊƂ) / 05.VIII.2012, leg. Y.-L. Lin [w, p]” ( TARI) ; 2 ♀♀, “ Taiwan: Taitung (#24657) / Haituan (Āầ) / 18.VI.2013, leg. J.-C. Chen [w, p]” ( TARI) ; 1 ♀, “ Taiwan: Taoyuan (22817) / Hsuanyuan ( Ṙã ) / 09.V.2012, leg. H. Lee [w, p]” ( TARI) ; 1 ♂, “ Taiwan: Taipei (20713) / Hsinhsien (ª Ễ) / 08.VII.2011, leg. M.-H. Tsou [w, p]” ( TARI) ; 1 ♀, “ Taiwan: Taipei (20712) / Fushan (ÑƜ) / 08.VII.2011, leg. M.-H. Tsou [w, p]” ( TARI) ; 2 ♀♀, “C. TAIWAN: Tungpu / 1200m, Nantou Hsien / 23-27.VII.1984 / K. C. Chou & C. H. Yang [o, p]” ( TARI) ; 1 ♀, “C. TAIWAN: Meifeng / 2250m, Nantou Hsien / 31.VIII-2.IX.1982 / L. Y. Chou & K. C. Chou [o, p]” ( TARI) ; 1 ♀, “C. TAIWAN: Sungkang / 2100m, Nantou Hsien / 13-15.IX.1984 / K. S. Lin & S. C. Lin [o, p]” ( TARI) ; 1 ♂, “Laos-NE, Houa Phan prov., / 20°12-13.5´N 103°59.5´104.01´E, / Ban Saluei → Phou Pane Mt. , / 1340-1870 m, 2–22.vi.2011, / Vít Kubáň & Lao coll. Lgt. [w, p] // Primary mountain forest, / at light + individual collecting, / Laos 2008 Expedition / National Muzeum Prague, / Czech Republic [w, p]” ( NMPC) . The specimens are provided with one additional printed red label: “ HOLOTYPUS, [or PARATYPUS, respectively], / Pyrrhalta / tsoui sp. nov., / Bezděk & Lee, 2019” .

Description. Body length: ♂♂ 3.6–4.1 mm (holotype 3.8 mm); ♀♀ 4.0– 4.8 mm.

Male (holotype). Dorsally reddish brown except following parts black: middle part of vertex, three spots on pronotum (one very small median and two small round lateraly), basal half of scutellum, each elytron with five spots: one round spot between humerus and scutellum, not touching anterior elytral margin; two spots before middle (outer small elongate, inner larger round); two spots subapically. Legs and antennae reddish brown. Ventral side: head and prosternum reddish brown, mesoventrite black, brown medially, metaventrite black with brown posterior margin, abdomen reddish brown.

Head. Labrum transverse with rounded anterior margin, surface with transverse row of several punctures bearing long pale setae. Anterior clypeal margin straight. Anterior part of head semiopaque, sparsely covered with punctures and longer pale setae. Interantennal space narrow, 0.66 times as wide as transverse diameter of antennal insertion. Interocular space 2.10 as wide as transverse diameter of eye. Frontal tubercles subquadrate, semiopaque, covered with microsculpture, separated by thin sulcus, laterally demarcated by thin furrow, posterior margins separated by shallow impressed line from vertex. Vertex dull, covered with microsculpture, small punctures and short setae. Antennae thin, 0.66 times as long as body, length ratios of antennomeres I–XI equal to 13-6- 11-10-8-9 -7- 7- 7-7-12, last five antennomeres slightly dilated, antennomere IV with thin elevated ridge ventrally, antennomeres VIII-XI slightly flattened ventrally.

Pronotum transverse, 1.96 times as wide as long, widest at anterior third. Anterior margin widely shallowly concave, lateral margins with rounded middle part, anteriorly and posteriorly convergent and nearly straight, posterior margin slightly concave, lateral parts of posterior margin oblique and concave. All margins thinly bordered. Anterior and posterior angles pointed and bearing long pale seta. Surface with distinct elevation along anterior margin, laterally widened and curved posteriorly, disc transversely impressed. Elevation glabrous and lustrous, disc densely covered with small punctures and short setae.

Scutellum triangular, with rounded apex, surface very densely covered with microsculpture, small punctures and short setae.

Elytra moderately convex, posteriorly slightly widened, 0.71 as long as body, 1.59 times as long as wide, dull, covered with small confused punctures with interspaces as wide as or narrower than puncture diameters and dense short pale setae, surface slightly impressed in subscutellar area, rest of surface even. Humeral calli well developed. Epipleura wide, in apical quarter gradually narrowing towards apex, densely covered with short pale setae. Macropterous.

Ventrally semiopaque, covered with longer pale setae. Last abdominal ventrite transverse, with deep V-shaped incision.

Legs moderately narrow. Protarsi: protarsomere I subtriangular, not modified ventrally, II subtriangular, short, length ratios of protarsomeres I–IV equal to 6-5-4-8. Mesotarsi: mesotarsomere I elongate subtriangular, not modi- fied ventrally, length ratios of mesotarsomeres I–IV equal to 7-6-5-9. Metatarsi: metatarsomere I elongate subtrian- gular, length ratios of metatarsomeres I–IV equal to 8-7-6-10. Claws bifid.

Aedeagus ( Fig. 7 View FIGURES 1–7 ) with apical half regularly curved in lateral view. In dorsal view, aedeagus asymmetrical, relatively narrow, with quadrate apex turned left and dorsally.

Female. Antennomere IV without ventral ridge. Last abdominal ventrite entire, without V-shaped incision. Spermatheca ( Fig. 24 View FIGURES 22–24 ) with C-shaped cornu and subsphaerical nodulus, cornu and nodulus of the same width, basal part of ductus spermathecae finger-like with oblique edge where thin ductus is attached.

Variability. Middle pronotal black spot variable, usually elongate and as large as lateral spots.

Differential diagnosis. The habitus of Pyrrhalta tsoui sp. nov. ( Fig. 36 View FIGURES 31–36 ) is similar to that of P. lucka sp. nov. and P. schillhammeri sp. nov., but P. tsoui sp. nov. can be distinguished by the following characters: antennae not subclavate in males (subclavate in P. schillhammeri sp. nov. and P. lucka sp. nov.), pro- and mesotarsomeres I not modified (modified in P. schillhammeri sp. nov. and P. lucka sp. nov., Figs 10–11, 15–16 View FIGURES 8–21 ), and aedeagus with apical part curved upwards (aedeagus flat in P. schillhammeri sp. nov. and P. lucka sp. nov., Figs 5–7 View FIGURES 1–7 ).