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Two New Species of the Anemadus Taiwanus Species-Group (Coleoptera: Leiodidae: Cholevinae: Anemadini) from China

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Two New Species of the Anemadus Taiwanus Species-Group (Coleoptera: Leiodidae: Cholevinae: Anemadini) from China Zootaxa 4072 (2): 282–290 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2016 Magnolia Press ISSN 1175-5334 (online edition) http://doi.org/10.11646/zootaxa.4072.2.9 http://zoobank.org/urn:lsid:zoobank.org:pub:1C21A78B-C978-4C2B-BD83-66F54478980E Two new species of the Anemadus taiwanus species-group (Coleoptera: Leiodidae: Cholevinae: Anemadini) from China CHENG-BIN WANG1 & HONG-ZHANG ZHOU1, 2 1Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, University of Chinese Academy of Sciences, 1 Beichen West Rd., Chaoyang District, Beijing 100101, P. R. China 2Corresponding author. E-mail: [email protected] Abstract Anemadus perreaui sp. nov. and A. sichuanus sp. nov., both belong to the A. taiwanus species-group (Coleoptera: Leio- didae: Cholevinae, Anemadini), are described from Sichuan Province, China. Color plates and line drawings are offered to illustrate their important characteristics. A key to all species of the group is compiled so as to include the two new spe- cies. Key words: Leiodidae, Cholevinae, Anemadus, taxonomy, new species, China 摘要 本文描述了产自中国四川省的佩罗风小葬甲 Anemadus perreaui sp. nov. 与四川风小葬甲 A. sichuanus sp. nov.，两 者均隶属于台湾风小葬甲种组 A. taiwanus species-group （鞘翅目：球蕈甲科：小葬甲亚科，风小葬甲族）。我 们提供了彩色图版与线条图来阐明其重要特征，并且编制了一个该种组所有种 （包括两新种）的检索表。 Introduction The genus Anemadus, belonging to the subtribe Anemadina of the tibe Anemadini in the subfamily Cholevinae (Coleoptera: Leiodidae), was originally established by Reitter (1884), with Catops strigosus Kraatz, 1852 as the type species fixed by the subsequent designation by Jeannel (1922). Before our study, the genus Anemadus Reitter, 1884 was composed of 39 valid species; their geographical distributions are generally limited within the zoogeographical regions of the Palaearctic and the Oriental. Giachino & Vailati (1993) established ten species-groups to classify the congener species; Perreau (2000) added two additional species groups which only found in China at present. The fauna of East Asia of this genus was known with 8 species categorized to 3 species groups: Anemadus asperatus species-group (5 spp.): 1. A. nipponensis Perreau, 1996a (JAPAN, Honshu) [erected on the basis of 1♀] Anemadus smetanai species-group (2 spp.): 2. A. smetanai Růžička, 1999 (CHINA, Yunnan) [erected on the basis of 2♂♂4♀♀] 3. A. kabaki Perreau, 2009 (CHINA, Sichuan) [erected on the basis of 1♂1♀] Anemadus taiwanus species-group (5 spp.): 4. A. hubeiensis Perreau, 2004 (CHINA, Hubei) [erected on the basis of 1♂] 5. A. ruzickai Perreau, 2002 (CHINA, Sichuan) [erected on the basis of 1♂1♀] 6. A. schuelkei Perreau, 2002 (CHINA, Shaanxi) [erected on the basis of 2♂♂3♀♀] 7. A. taiwanus Perreau, 1996a (CHINA, Taiwan) [erected on the basis of 1♂1♀] 8. A. wolongianus Perreau, 1996b (CHINA, Sichuan) [erected on the basis of 1♂2♀♀] 282 Accepted by W. Hall: 7 Dec. 2015; published: 29 Jan. 2016 The genus Anemadus had only 7 species recorded hitherto in China and was thus a poorly studied group. They were also represented only by a few specimens (see content in square brackets of above checklist); the group appears to be rare and infrequently collected. In this paper, two new species are described and illustrated, namely A. perreaui sp. nov. and A. sichuanus sp. nov., both belong to the Anemadus taiwanus species-group and were collected from Baoxing, Sichuan Province in SW China. A key to all species of the group is compiled based on the version of Perreau (2002) and the modification includes of course the two new species. Material and methods Specimens were relaxed and softened in a hot saturated solution of potassium hydroxide for 4 minutes (for mounted dry specimens) or 8 minutes (for alcohol-preserved specimens), and then transferred to distilled water to rinse the residual potassium hydroxide off and stop any further bleaching. The softened specimens were moved into glycerin and dissected there to observe morphological details. After examination, the body parts were mounted on a plastic slip with Gum Arabic for future studies. Observation, drawing and measurement were performed using a Leica MZ APO stereomicroscope (magnification up to ×250) with a squared eyepiece graticule. Some microstructures were observed under Zeiss Axio Zoom.V16 motorized stereo zoom microscope (magnification up to ×270). Color photographs were taken with Zeiss AxioCam MRc 5 and the final deep focus images were created with the stacking software Helicon Focus 5.3. The program Adobe Photoshop® CS6 was used to make the line-art plates. The distribution map was downloaded from China Map Press (www.chinamap.com), and modified in Adobe Photoshop® CS6 based on examined materials and published records. The material examined for this study is deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZ-CAS). The following abbreviations are used for measurement in millimeters (mm): AL (antennal length): length from the antennal base to its tip. BTW (basitarsal width): width of the widest portion of 1st protarsomere. EBL (Extended body length): summation of HL, PL, ELL and length of exposed scutellum, preventing the error introduced by exposed or retracted head. ELL (elytral length): length from the tail end of scutellum to the elytral apex. ELW (elytral width): width of the widest portion of two elytra closed together. EW (eye width): width of a single compound eye in dorsal view. HL (head length): axial length from the anterior apex of clypeus through the posterior margin of occipital carina. HW (head width): width of the widest portion of head (usually including eyes). PL (pronotal length): axial length of the pronotum. PW (pronotal width): width of the widest portion of pronotum. TW (tibial width): width of the widest portion of protibia (excluding spines along outer margin etc.). Taxonomy Genus Anemadus Reitter, 1885 Reitter, 1884: 58 (species included: acicularis, angusticollis, arcadius, graecus, incisipennis, maritimus, orchesioide, pellitus, pulchellus, strigosus, subcostatus, transversostriatus, vandalitiae); Jeannel, 1936: 198 (valid genus; characters; key to species); Giachino & Vailati, 1993: 62 (revision; phylogeny; key to species); Perreau, 2000: 41 (world catalog; 32 species). Type species. Catops strigosus Kraatz, 1852, fixed by subsequent designation by Jeannel (1922: 41). Synonymy. Namadeus Jeannel, 1936: 203 (valid genus; species included: acicularis, anatolicus, creticus, cribratostriatus, graecus, leonhardi, macedo, pellitus; Type Species: Catops acicularis Kraatz, fixed by original designation); Giachino & Vailati, 1993: 62 (synonym with Anemadus). TWO NEW SPECIES OF ANEMADUS FROM CHINA Zootaxa 4072 (2) © 2016 Magnolia Press · 283 Anemadus taiwanus species-group Perreau, 2000: 46 (species included: taiwanus, wolongianus); Perreau, 2002: 46 (key to species). Diagnosis. Small size compared to other congeners; protarsi weakly expanded and expansion of mesotarsi imperceptible; median lobe of aedeagus bifid, apical indentation wide or reduced to a simple incision longitudinally short (Perreau, 2002). Distribution. China (Distribution map as shown in Fig. 1). FIGURE 1. Distribution map of the Anemadus taiwanus species-group. Key to males of the Anemadus taiwanus species-group, modified based on Perreau (2002) 1 Aedeagus with narrow apical indentation, reduced to a simple incision longitudinally short . 2 - Aedeagus with wide and deep apical indentation . 3 2 Parameres shortly divergent at apex and about 1/6 longer than median lobe; median lobe parallel up to apical 1/4 and rounded at apex . .A. schuelkei Perreau - Parameres convergent towards one another at apex and about 1/3 longer than median lobe; median lobe triangularly narrowed from middle to apex . A. taiwanus Perreau 284 · Zootaxa 4072 (2) © 2016 Magnolia Press WANG & ZHOU 3 Parameres and median lobe extremely thick in lateral view . .A. hubeiensis Perreau - Parameres and median lobe normally thick for the genus in lateral view. 4 4 Parameres shortly divergent at apex and about 1/3 longer than median lobe . 5 - Parameres expanded and subrounded at apex and about 1/8 longer than median lobe (Fig. 4H). .A. sichuanus sp. nov. 5 Median lobe narrowed at middle; colour lighter, mostly yellowish brown . A. wolongianus Perreau - Median lobe not narrowed at middle; colour darker, mostly chestnut brown or dark brown . 6 6 Antennomere length of 2th/3th = 1.50; each paramere with 4 setae at apex, 1 inner and 3 outer. .A. ruzickai Perreau - Antennomere length of 2th/3th = 1.24; each paramere with 5 setae at apex, all inner (Figs. 3K&L). A. perreaui sp. nov. Anemadus perreaui sp. nov. (Figs. 2A–D; 3A–L) Type material. Holotype: CHINA, Sichuan: ♂, Baoxing, Ruobigou, 1630 m, Cyclobalanopsis forest, from fallen wood, 10.VIII.2003, Jie Wu leg. (IZ-CAS). Paratypes: 1♀, same data as holotype (IZ-CAS); 1♀, Baoxing, Ganyanggou, 2000 m, Cyclobalanopsis forest, from fallen wood, 9.VIII.2003, Jie Wu leg. (IZ-CAS). Description. Male. EBL: 3.00 mm. Length of different body parts: HL : AL : PL : ELL = 0.56 : 1.14 : 0.68 : 1.61 mm; width: HW : EW : PW : ELW = 0.70 : 0.12 : 1.16 : 1.42 mm. Proportion of antennomeres from base to tip in μm (length × width): 111 × 62, 147 × 50, 119 × 43, 74 × 42, 79 × 47, 64 × 51, 94 × 71, 41 × 68, 85 × 81, 83 × 89, 155 × 88. Habitus (Fig. 2A) elongated oval, regularly convex and sublustrous. Moderately pigmented: mostly chestnut brown; mouthparts, basal four or five antennomeres and apical half of ultimate antennomere, areas near hind corners of pronotum, elytral apices, and tarsi more or less yellowish. Dorsum continually covered with fine, recumbent, sallow pubescence. Insertions of pubescence on elytra aligned along transverse striolations. Head retractile, HW/HL = 1.24. Surface covered with strong round punctures, separated about 2.0–4.0 times of their diameter; interspaces smooth, without visable microsculpture. Clypeofrontal suture distinct. Clypeus trapezoidal, anterior margin almost straight. Compound eyes well developed, EW/HW = 0.12. Antennae (Fig. 3A) long and slender, AL/HW = 1.63; length of 2th/3th = 1.24; 8th asymmetrical, wider than long; 10th slightly wider than long; 11th elongated pear-like. Pronotum (Fig.
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