Pyrrhalta maculata Gressitt & Kimoto, 1963

Lee, Chi-Feng & Bezdek, Jan, 2021, Revision of the genera Xanthogaleruca Laboissiere, 1932 and Pyrrhalta Joannis, 1865 (Coleoptera, Chrysomelidae, Galerucinae) of Taiwan, with type designation of Galerucella lineatipes Takei, ZooKeys 1039, pp. 1-108 : 1

Pyrrhalta maculata Gressitt & Kimoto, 1963 Figs 23A-C , 24

Pyrrhalta maculata Gressitt & Kimoto, 1963: 456; Kimoto 1969: 28 (additional records in Taiwan); Kimoto 1987: 188 (additional records in Taiwan); Kimoto 1989a: 248 (additional records in Taiwan); Kimoto 1991: 9 (additional records in Taiwan); Kimoto and Chu 1996: 56 (catalogue); Kimoto and Takizawa 1997: 300 (key), 373; Yang 2002: 627 (China: Fujian); Beenen 2010: 453 (catalogue); Xue and Yang 2010: 126 (catalogue); Medvedev 2013: 268 (key); Yang et al. 2015: 118 (catalogue); Bezděk and Lee 2019: 519 (redescription).

Pyrrhalta (Pyrrhalta) maculata : Wilcox, 1971: 88 (catalogue).

Type

(types examined by Bezděk and Lee (2019) exclude). Paratype. 1♂ (CAS): " TAIWAN (C.), Mu- / sha ( Wuse ) 1100 m, / V-19-32. Gressitt [p, w] // PARATYPE / Pyrrhalta / Pyrrhalta maculata [h] / Gressitt and Kimoto [p, y]" .

Other material

(specimens examined by Bezděk and Lee (2019) exclude). Taiwan. Nantou: 1♀ (TARI), Huakang (華岡), 24.IV.2019, leg. J.-C. Chen; 1♂, 3♀♀ (NMNS), Meifeng (梅峰), 9.IV. -7.V.2002, leg. C. S. Lin & W. T. Yang ; 1♀ (NMNS), same but with " 7.V. -11.VI.2002 " ; 1♀ (NMNS), same but with " 11.VI. -9.VII.2002 " ; 1♂ (NMNS), same but with “10.IX.-15.X.2002” ; 1♀ (NMNS), same but with " 14.VII. -7.VIII.2007 " ; 1♂, 1♀ (TARI), Peitungyanshan (北東眼山), 16.IX.2013, leg. F.-S. Huang ; 1♂ (TARI), Sungkang (松崗), 2.IV.1997, leg. W.-Y. Chou ; 1♀ (TARI), same locality, 10.IV.2016, leg. Y.-T. Chung.

Redescription.

Length 4.7-5.2 mm, width 2.3-2.5 mm. Body color (Fig. 23A-C ) reddish brown; vertex with one black spot at center; pronotum with three large black spots, one poorly defined, elongate spot at center, from basal 1/3 to apical 1/3, one pair laterally; scutellum black; five pairs of large black spots on elytra, one pair near base at middle, two pairs on the line at middle, one pair at apical 2/5 laterally, one pair at apical 1/5 near suture; metathoracic ventrites darker. Eyes small, interocular space 1.94-2.86 × diameter of eye. Antennae filiform in males (Fig. 24A ), antennomere III apically broadened at apex, length ratios of antennomeres I-XI 1.0: 0.5: 1.0: 0.6: 0.5: 0.5: 0.5: 0.5: 0.4: 0.5: 0.7, length to width ratios of antennomeres I-XI 3.3: 2.2: 2.0: 2.1: 1.7: 1.9: 1.8: 1.8: 1.5: 1.6: 2.5; filiform in females (Fig. 24B ), antennomere III not modified, length ratios of antennomeres I-XI 1.0: 0.6: 1.1: 0.6: 0.5: 0.5: 0.5: 0.5: 0.5: 0.5: 0.8, length to width ratios of antennomeres I-XI 3.2: 2.3: 4.5: 2.4: 1.9: 1.8: 1.7: 1.7: 1.7: 1.6: 2.6. Pronotum and elytra convex. Pronotum 1.9-2.1 × wider than long, disc with reticulate microsculpture; dense, extremely coarse punctures and extremely short pubescence; with median longitudinal and lateral depressions; lateral margins moderately rounded, apical margin slightly concave, basal margin straight; only posterior setiferous punctures erect. Elytra elongate and broad, parallel-sided, 1.5-1.6 × longer than wide; disc with reticulate microsculpture, and with dense, extremely coarse punctures and short pubescence. Apical spur of middle tibia small (Fig. 24E ), tarsomere I basally narrowed in lateral view, with small tooth at middle ventrally in males (Fig. 24K ). Aedeagus (Fig. 24C, D ) slender in dorsal view, 5.5 × longer than wide, sides asymmetric, curved near apex, apex truncate; strongly curved at middle in lateral view; ostium not covered by membrane, ventrally located, located along lateral margin; two endophallic sclerites elongate, apex of primary endophallic sclerite acute, 0.6 × as long as aedeagus, secondary sclerite much shorter, 0.6 × as long as primary endophallic sclerite, apex acute. Only apices of gonocoxae (Fig. 24H ) sclerotized, transverse, with two long setae at apex of each gonocoxa. Ventrite VIII (Fig. 24F ) transverse; disc with several long setae and dense short setae along apical margin; spiculum long. Receptacle of spermatheca (Fig. 24F ) very swollen; pump short and strongly curved; sclerotized proximal spermathecal duct wide and short. Apical margin of abdominal ventrite V truncate, with deeply rounded depression at middle in males (Fig. 24J ); slightly concave in females (Fig. 24I ).

Remarks.

Adults of P. maculata Gressitt and Kimoto and P. tsoui Bezděk and Lee may be separated from others within the species group by the five pairs of large black spots on the elytra (Fig. 23 ), the strongly curved aedeagus in lateral view (Figs 24C , 25C ), and gonocoxa with only two setae (Figs 24H , 25J ). adults of P. maculata differ from those of P. tsoui by the apically broadened antennomere III in males (Fig. 24A ) (unmodified antennomere III, but IV with a large tubercle in those of P. tsoui (Fig. 25A )), and extremely slender antennomere III in females,> 4.0 × longer than wide (Fig. 24B ); (slender antennomere III, <4.0 × longer than wide in those of P. tsoui (Fig. 25B )). In males of P. maculata , the apex of the primary endophallic sclerite is acute, and lacks additional teeth on the secondary sclerite (Fig. 24C, D ). The apex of the primary endophallic sclerite have several teeth and one additional tooth on the secondary sclerite in those of P. tsoui (Fig. 25C, D ).

Food plants.

Possibly adults fed flowers of Lauraceae based on the following events. A specimen was collected by Mr Yi-Ting Chung 10 April 2016 in Sungkang by sweeping flowers of Lauraceae . Two specimens were collected by Mr Fu-Sheng Huang 16 September 2013 in Peitungyanshan by fogging Neolitsea aciculata (Bl.) Koidz. var. variabillima J.C. Liao ( Lauraceae ).

Distribution.

China, Taiwan.

Figures

Figure 23. Habitus of Pyrrhalta maculata Gressitt & Kimoto and P. tsoui Bezdek & Lee A P. maculata, female, dorsal view B ditto, ventral view C ditto, lateral view D P. tsoui female, dorsal view E ditto, ventral view F ditto, lateral view.

Figure 24. Diagnostic characters of Pyrrhalta maculata Gressitt & Kimoto A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E apex of tibia of middle leg, male F abdominal ventrite VIII G spermatheca H gonocoxae I abdominal ventrite V, female J abdominal ventrite V, male K tarsi of middle leg, male.

Figure 25. Diagnostic characters of Pyrrhalta tsoui Bezdek & Lee A antenna, male B antenna, female C aedeagus, dorsal view D ditto, lateral view E apex of tibia of middle leg, male F abdominal ventrite VIII G spermatheca H abdominal ventrite V, female I abdominal ventrite V, male J gonocoxae.