Anomala hualienensis Zhao, 2022

Zhao, Ming-Zhi & Zorn, Carsten, 2022, Contribution to the genus Anomala Samouelle, 1819 (Coleoptera: Scarabaeidae Rutelinae) of China and adjacent regions. Part II: six new species from Taiwan and Hainan, Zootaxa 5168 (2), pp. 175-195 : 176-179

Anomala hualienensis Zhao , new species [ẄÄ异fflŵoi/ḢM條ŵff]

( Figs. 1A–C , 2A–C , 3A–C )

Type material. Holotype: ♂ ( NMNS), Taiwan Island, Hualien , Kuangfu logging road [= 光復IJdz], 820~ 890m, 2020-V-30, Y.-T. Chien leg., by mercury lamp trap . Paratypes: 17♂♂, 25♀♀ (1♂, 2♀♀ in NMNS, 10♂♂, 17♀♀ in CCPC, 2♂♂, 2♀♀ in CZPC, 2♂♂, 2♀♀ in IZAS, 2♂♂, 2♀♀ in TARI), same data as holotype ; 116♂♂, 125♀♀ (66♂♂, 75♀♀ in CCPC, 50♂♂, 50♀♀ in ZMPC), ditto, but “ 2021-V-13 ” ; 47♂♂, 103♀♀ ( CCPC), ditto, but “ 2021- V-21 ” ; 4♂♂, 12♀♀ ( CCPC), Kuangfu logging road, 1000m, 24-V-2009 , Wen-I Chou leg.

Description. Holotype male ( Fig. 1A–C ). Body length: 15.8 mm, greatest width: 8.1 mm.

General appearance. Body shape elongated ovoid, convex. Entirely metallic green, elytra and abdomen predominantly red, antenna dark brown.

Head. Clypeus subtrapezoidal, anterior corner broadly rounded; anterior margin nearly straight and weakly reflexed; surface densely rugopunctate. Frontoclypeal suture distinct. An inverted triangular area at anterior half of frons rugopunctate, gradually changing into small punctures, other portions of frons and vertex with sparse minute punctures. Antennal club slightly longer than antennomeres 1–6 combined. Inner margin of eye with several moderately long setae.

Pronotum. Sides nearly subparallel in posterior two fifth, then gently curved, strongly convergent anteriad in anterior three fifth. Anterior angle acute and weakly protruding, posterior angle blunt. All marginal lines complete. With sparse small punctures. Lateral margin with several long setae.

Scutellum. Subtriangular, lateral margin arched. With moderately dense minute punctures somewhat irregularly distributed, impunctate at central area and the curved margins.

Elytra. Interstices flat, primary costae slightly convex; strial punctures moderately dense, annulated and large. Interstices I to IV each with a secondary stria; interstice I (the subsutural interstice) broadest, with secondary stria irregularly doubled; all these secondary striae obsolete before the level of apical umbone, except for that on interstice III, which has several scattered punctures before humeral umbone. Primary costae without additional striae. Humeral umbone and apical protuberance moderately bulging. Lateral carina distinct in basal half. Epipleura with a row of sparse short setae. Marginal membrane complete.

Propygidium. With dense small and transverse punctures sometimes coalescent, punctures coarse near sides. Glabrous.

Pygidium. Weakly bulging, posterior margin broadly arched apically. With dense transverse small punctures, punctures being denser at marginal portions. With several short setae distributed near posterior margin, posterior margin with a row of moderately long setae near apex.

Ventral thoracic surface. Hypomeron irregularly striolate and sparse short setae. Collar of mesosternite with irregularly distributed small punctures and dense short setae at each side. Other portions of mesosternite with very dense coarse punctures and dense long setae. Ventral metathoracic surface with dense to very dense, semi-annulated large punctures which usually coalescent, and dense long setae at each side; with small dense punctures and sparse short setae medially.

Abdominal ventrites. With moderately dense, transverse large punctures. Ventrites 2–5 each with a transverse row of sparse moderately long setae, the rows interrupted medially, setae sometimes becoming spiniform in ventrites 4–5; ventrite 6 with a complete row of setae along posterior margin.

Legs. Protibia bidentate, both teeth distinct and sharp, apical tooth longer, extending to level of halfway of protarsomere 3. Inner spur situated at the level of proximal tooth. Inner protarsal claw and outer mesotarsal claw split apically, lower branches distinctly longer and thicker, the lower branch of inner protarsal claw strongly concave internobasally. Protarsus slightly thickened. Each tarsomere 5 with a strong internomedial protuberance. Outer metatarsal claw slightly longer than inner one. Mesofemoral surface with three transverse rows of setae, first row at anterior margin with long setae, a second row at middle and a third row at posterior margin with short to moderately long, robuster setae; metafemoral surface with three transverse rows of moderately long setae, anterior row at anterior margin, a second row slightly behind middle with long setae, and a third row at posterior margin with short setae.

Male genitalia. See Fig. 3A–C .

Paratypes. Males. Body length: 14.6–16.4 mm, greatest width: 7.6–8.3 mm. External features and shape of parameres consistent. Sometimes the metallic green part with distinct blue sheen. Females ( Fig. 2A–C ). Body length: 16.2–17.8 mm, greatest width: 8.8–9.3 mm. Generally similar to male, but stouter and more convex. Antennal club almost equally as long as antennomeres 1–6 combined. Lateral carina more distinct in basal third of elytra. Pygidium more triangular in shape. Protibia and protarsus distinctly thinner than in male; both protibial teeth blunt at apex, apical tooth extending to level of base of protarsomere 3; inner spur situated at halfway of protibia; internomedial protuberance of protarsomere 5 small; upper and lower branches of inner protarsal claw and outer mesotarsal claw almost equal in length, but the lower branches are still thicker; metatibia more fusiform.

Differential diagnosis. Anomala hualienensis Zhao , new species can be assigned to the Anomala semicastanea species-group (sensu Lin 2000) according to the morphological similarities. The shape of aedeagus suggests that its closest relatives are A. semicastanea Fairmaire, 1888 ( Figs. 1D–F , 2D–F , 3D–F ) from southeastern part of mainland China and A. quelparta Okamoto, 1924 , endemic to Jeju Island off the coast of Korean peninsula. The new species can be distinguished by the wider protibia and protarsus, as well as the more divided parameres with distinctly sinuate inner margins and shorter apical denticles.

The new species is externally similar to A. insulicola Lin, 2000 from Hainan and A. shimenensis Lin, 2000 from Hunan, but both species have bidentate and adjacent parameres (vs. unidentate and divided parameres in A. hualienensis ).

Remarks. The new species was misidentified as Anomala semicastanea by Kobayashi & Chou (2008).

Etymology. This species is named after Hualien County, where the type material was collected.

Distribution. Taiwan Island (Hualien).

Figures

FIGURE 1. Habitus of Anomala spp., males.A–C, holotype of A. hualienensis Zhao, new species; D–F, A. semicastanea Fairmaire, 1888 (Fujian). A, D, dorsal view; B, E, lateral view; C, F, ventral view. Scale bar = 5 mm.

FIGURE 2. Habitus of Anomala spp., females. A–C, paratype of A. hualienensis Zhao, new species; D–F, A. semicastanea Fairmaire, 1888 (Fujian). A, D, dorsal view; B, E, lateral view; C, F, ventral view. Scale bar = 5 mm.

FIGURE 3. Male genitalia of Anomala spp. A–C, holotype of A. hualienensis Zhao, new species; D–F, A. semicastanea Fairmaire, 1888 (Fujian). A, D, dorsal view; B, E, right lateral view; C, F, ventral view. Scale bar = 2 mm.