Anemadus sichuanus, Wang, Cheng-Bin & Zhou, Hong-Zhang, 2016
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publication ID |
https://doi.org/ 10.11646/zootaxa.4072.2.9 |
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publication LSID |
lsid:zoobank.org:pub:1C21A78B-C978-4C2B-BD83-66F54478980E |
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DOI |
https://doi.org/10.5281/zenodo.6086548 |
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persistent identifier |
https://treatment.plazi.org/id/038387C8-A85A-040B-FF22-FF780D7FF862 |
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treatment provided by |
Plazi |
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scientific name |
Anemadus sichuanus |
| status |
sp. nov. |
Anemadus sichuanus View in CoL sp. nov.
( Figs. 2 View FIGURE 2 E–G; 4A–L)
Type material. Holotype: CHINA, Sichuan: ♂, Baoxing, Pujigou, 2400 m, forest of Manchurian walnut, from fallen wood, 11.VIII.2003, Jie Wu leg. (IZ-CAS). Paratypes: 1♀, same data as holotype (IZ-CAS).
Description. Male. EBL: 3.32 mm. Length of different body parts: HL: AL: PL: ELL = 0.53: 1.21: 0.69: 1.89 mm; width: HW: EW: PW: ELW = 0.68: 0.07: 1.13: 1.33 mm. Proportion of antennomeres from base to tip in µm (length × width): 130 × 64, 152 × 51, 132 × 47, 82 × 40, 83 × 45, 60 × 53, 94 × 66, 44 × 64, 81 × 76, 84 × 78, 166 × 80.
Habitus ( Fig. 2 View FIGURE 2 E) elongated oval, regularly convex and sublustrous. Moderately pigmented: mostly chestnut brown; mouthparts, basal two antennomeres and apical half of ultimate antennomere, area 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 = 1.28. Surface covered with strong round punctures, separated about 1.5–3.0 times of their diameter. Clypeofrontal suture distinct. Clypeus transverse, anterior margin subrounded. Compound eyes well developed, EW/HW = 0.10. Antennae ( Fig. 4 View FIGURE 4 A) very long and slender, AL/HW = 1.78; all antennomeres longer than wide except 8th; length of 2th/3th = 1.15; 11th rather long, pear-like.
Pronotum ( Fig. 4 View FIGURE 4 D) transverse, widest behind middle, PW/PL = 1.64. Sides fairly curved, strongly narrowing forward and moderately narrowing backward from widest; hind corners bluntly rounded and slightly protruded. Posterior edge slightly bisinuate. Surface covered with very large and rough punctures, separated about 0.5–2.0 times of their diameter, some of them even confluent; interspaces smooth, without visable microsculpture. Posterolateral impressions absent.
Elytra oval and very elongated, widest at about basal 1/3, ELL/EW = 1.42. Sides regularly curved, gradually narrowing from widest to apices; apices much narrowly rounded ( Fig. 4 View FIGURE 4 E). Sculpture of type «a» (sensu Giachino & Vailati, 1993): transverse striolations well-marked and irregular, longitudinal striae invisible. When immersed in glycerine, large primitive punctures visible within interior of cuticule, arranging into 8 irregular longitudinal rows (imperceptible in dry specimens) ( Fig. 2 View FIGURE 2 G). Sutural striae present but inconspicuous. Interspaces of striolations with microtrichiae, aligning into ca. 5 transverse lines. Metathoracic wings fully developed.
Prolegs slender, with basal three protarsomeres weakly expanded ( Fig. 4 View FIGURE 4 B): TW/BTW = 1.34. Protibiae with outer margin almost straight, while inner margin slightly expanded around middle. Profemora wider than protibiae. Mesotibiae distinctly curved, expansion of basal two mesotarsomeres imperceptible. Metatibiae straight.
Genital segment ( Fig. 4 View FIGURE 4 G) as typical for the genus, tergite IX with 4 setae long and strong, as well as several fine setae apically.
Aedeagus with median lobe moderately wide, weakly widened to subapex and then narrowed towards a bifid apex in dorsal view ( Fig. 4 View FIGURE 4 H), apical indentation deep but not very wide, and both branches obliquely truncated and subacute at apex. Paramere constricted subapically, apex expanded, subrounded and bearing 5 setae, their arrangement as shown in Figs. 4 View FIGURE 4 K&L. In lateral view, median lobe gently bent ventrad at apical part, parameres very wide and turned ventrad at apex ( Fig. 4 View FIGURE 4 J). Endophallus of holotype everted, with a pair of spine rows on dorsal wall, abundant long spines at apical part, and a pair of large teeth pointing downwards at end ( Figs. 4 View FIGURE 4 H–J).
Female. Similar to male in general appearance ( Fig. 2 View FIGURE 2 F), but can be distinguished from following characteristics: pro- and mesotarsi simply linear ( Fig. 4 View FIGURE 4 C); ventrite VIII with spiculum ventrale short and subrounded anteriorly ( Fig. 4 View FIGURE 4 F).
Distribution. China (Sichuan).
Etymology. The specific epithet is from the Chinese name (Pinyin) of the type locality “Sichuan”, a province in China.
Remarks. This new species also closely allied to A. ruzickai Perreau , A. wolongianus Perreau , as well as A. perreaui sp. nov., but it is easily to distinguish it from the latter three by the combination of the following characteristics: antennomere length of 2th/3th = 1.15; aedeagus with median lobe moderately wide, weakly widened to subapex and then narrowed towards apex when viewed dorsally, apical indentation deep but not very wide, and both branches obliquely truncated and subacute at apex; paramere constricted subapically, apex expanded, subrounded when viewed dorsally, and very wide and turned ventrad at apex when viewed laterally; each paramere with 5 setae at apex, 3 inner and 2 outer.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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