Pyrrhalta carolusi, 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 : 522-524

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/12AC8230-BDC1-407B-9F86-EED33244C09B
taxon LSID	lsid:zoobank.org:act:12AC8230-BDC1-407B-9F86-EED33244C09B
treatment provided by	Plazi
scientific name	Pyrrhalta carolusi
status	sp. nov.

Treatment

Pyrrhalta carolusi sp. nov.

( Figs 2 View FIGURES 1–7 , 12, 19 View FIGURES 8–21 , 31 View FIGURES 31–36 )

Type locality. Laos, Houa Phan prov. , Ban Saluei, Phou Pane Mt., 20°12´N 104°01´E GoogleMaps .

Types. Holotype: ♂, “NE LAOS, Hua Phan prov. / Ban Saluei, Phou Pan (Mt.), / N20°12´E104°01´, / 1300- 1900m, / 11.iv–15.v.2012 [w, p] // BMNH{E} / 2012-14 / C. Holzschuh [w, p] // BMNH{E} / 1217219 [w, p]” ( BMNH) GoogleMaps . Paratypes: 1 ♂, “NE LAOS, Hua Phan prov. / Ban Saluei, Phou Pan (Mt.), / 1300-1900 m, 7.iv– 25.2010 / 20°12´N, 104°01´E / leg. C. Holzschuh [w, p] // BMNH{E} / 2012-14 / C. Holzschuh [w, p] // BMNH{E} / 1211996 [w, p]” ( BMNH) GoogleMaps ; 1 ♂, “ Thailand NW / Mae Hong Son prov. / pass Soppong – Pai, / 20 km from Soppong / 29.4– 17.5.2007 / P. Viktora lgt. [w, p]” ( NMPC). The specimens are provided with one additional printed red label: “ HOLOTYPUS, [or PARATYPUS, respectively], / Pyrrhalta / carolusi sp. nov., / Bezděk & Lee, 2019” .

Description. Body length: ♂♂ 4.0– 4.3 mm (holotype 4.3 mm).

Male (holotype, Fig. 31 View FIGURES 31–36 ). Body and antennae with following parts black: middle part of vertex and base of head in ventral and lateral views, three spots on pronotum (one elongate median and two round lateraly), scutellum, except apex, each elytron with five round spots (one between humerus and scutellum, not touching anterior elytral margin; two along lateral elytral margin; two along suture), mesoventrite except middle part, metaventrite except posterior margin, abdomen with darker lateral parts. Legs brown with infuscate tarsi and apical halves of tibiae.

Head. Labrum transverse with rounded anterior margin, surface with transverse row of several punctures bearing long pale setae. Anterior clypeal margin slightly concave. Anterior part of head semiopaque, sparsely covered with punctures and longer setae. Interantennal space narrow, 0.5 times as wide as transverse diameter of antennal insertion. Interocular space 2.33 as wide as transverse diameter of eye. Frontal tubercles quadrate, lustrous, smooth, distinctly elevated, separated each other by thin sulcus, laterally demarcated by thin furrow. Vertex dull, covered with microsculpture, small punctures and short setae. Antennae thin, 0.64 times as long as body, length ratios of antennomeres I–XI equal to 16-7- 20-7-9-8-8 - 8-8-8-12, antennomere III subapically with large tooth directed downwards, IV-VI ventrally with sharp keel forming small subtriangular tooth ( Fig. 19 View FIGURES 8–21 ).

Pronotum transverse, 1.89 times as wide as long, widest at anterior third. Anterior margin broadly, weakly concave, lateral margins obtuse angulate with widely rounded middle part, anteriorly and posteriorly convergent and nearly straight, posterior margin weakly concave, lateral part of posterior margin oblique and concave. All margins thinly bordered very thinly bordered. Anterior and posterior angles toothed and bearing long pale seta. Surface elevated along anterior margin, laterally curved posteriorly, disc transversely impressed. Elevation almost glabrous, disc densely covered with small punctures and short setae.

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

Elytra moderately convex, parallel, 0.72 as long as body, 1.63 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 with very slightly impressed subscutellar area, remainder 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. Terminal abdominal ventrite with deep V-shaped inci- sion.

Legs moderately narrow. Protarsi: protarsomeres I and II subtriangular, short, protarsomeres I not modified ventrally, length ratios of protarsomeres I–IV equal to 6-6-5-9. Mesotarsi: mesotarsomere I narrow, subparallel, in lateral view axe-shaped, with narrow basal part and expanded apical two thirds, angles of expanded part pointed ( Fig. 12 View FIGURES 8–21 ), length ratios of mesotarsomeres I–IV equal to 7-6-5-11. Metatarsi: metatarsomere I narrow, subtriangular, length ratios of metatarsomeres I–IV equal to 8-7-5-11. Claws bifid.

Aedeagus ( Fig. 2 View FIGURES 1–7 ) relatively narrow, hockey stick shaped, with apex curved left, in lateral view flat, not curved dorsally.

Female unknown.

Variability. The paratype from Thailand has smaller black spots on the pronotum.

Differential diagnosis. Pyrrhalta carolusi sp. nov. has an elongate antennomere III which is about 2.8-2.9 times longer than IV and has a large, triangular subapical expansion. This character is known only in males of P. maculata ( Figs 18–19 View FIGURES 8–21 ). All other maculate Pyrrhalta species has antennomere III much shorter, 1.0–1.3 times as long as IV. Pyrrhalta carolusi sp. nov. and P. maculata can be distinguished by the structure of the aedeagus, which is flat and not curved in P. carolusi sp. nov. while strongly curved dorsally in midlength in P. maculata ( Figs 1–2 View FIGURES 1–7 ).

Distribution. Laos, Thailand.

Etymology. Dedicated to Carolus Holzschuh ( Austria), specialist in Cerambycidae and the collector of two of the three known specimens of this new species.