Lucanus dirki Schenk, 2002

Zhan, Zhihong & Young, Daniel K., 2023, A taxonomic assessment and redefinition of the Lucanus fortunei species group in China (Coleoptera: Lucanidae: Lucaninae), Zoological Systematics 48 (4), pp. 279-360 : 334-336

publication ID	https://doi.org/ 10.11865/zs.2023401
publication LSID	lsid:zoobank.org:pub:46AA3E9C-C065-415D-946B-0813AF169B14
persistent identifier	https://treatment.plazi.org/id/A51987E0-7F63-FFA5-FF02-AB5DFDA5FDF0
treatment provided by	Felipe
scientific name	Lucanus dirki Schenk, 2002
status

Treatment

Lucanus dirki Schenk, 2002 View in CoL ( Figs 193–200 View Figures 193–200 , 270 View Figures 260–275 , 302 View Figures 276–307 , 330 View Figures 324–335 , 358 View Figures 336–363 , 439–441 View Figures 436–456 , 474 View Figures 467–476 )

Lucanus dirki Schenk, 2002 View in CoL : plate 3, fig. 2. Material examined. [5♂]: CHINA: Yunnan Province, Mang City // Dehong Region , Yingjiang County // [德±傣Dzss

治州, Ω江县]; Alt. 1350m; 26 May. 2018 // Zhihong Zhan leg.; [2nd label]: 24.6944°N; 97.9433°E Adult // collected by Light-trap//; [3rd label]: Lucanus View in CoL // dirki View in CoL // Schenk ♂ // det. Z. Zhan; [1♀]: CHINA: Yunnan Province, Mang City // Dehong Region, Yingjiang County // [德±傣Dzss治州, Ω江县]; Alt. 1350m; 26 May. 2018 // Zhihong Zhan leg.; [2nd label]: 24.6944°N; 97.9433°E Adult // collected by Light-trap//; [3rd label]: Lucanus View in CoL // driki // Schenk ♀ // det. Z. Zhan.

Body length 32.7–57.2 mm (♂); 32.8 mm (♀).

Description. Major male. Body brownish with metallic luster; body surface covered with vestiture of short, yellowish setae. Head, including widest region of mandibular bases 1.5× width of pronotum and elytra. Head brownish, setose; mandibles straight along midlength and anteriorly; major inner mandibular tooth located approximately 1/3 length of each mandible, sharply triangular;>8 small inner mandibular teeth located above and below major mandibular tooth. Apical mandibular forks well developed, upper branches of apical fork 1.4× length of lower apical fork branches; anterolateral ridges of head flat, posterolateral margins of head subparallel with anterolateral ridges; clypeolabrum stout, trapezoidal; labrum triangular, protruding along midlength. Thorax brownish, concolorous with head, surface setose; convex at apex and base, significantly protruding at middle; 0.71× width of head and mandibles; prothoracic tibiae reddish, each bearing 3–4 slender spines from apex to midlength; mesothoracic tibiae reddish, each bearing two spines along midlength; metathoracic tibiae reddish, each bearing a single poorly developed spine distally. Elytra brownish, usually somewhat brighter than head and pronotum, setose and metallic along suture, slender, widest along apical 1/3, strongly narrowed along basal 1/3. Median male as major male. Minor male as major and median males except: head with major inner mandibular tooth single-pointed, <4 small inner mandibular teeth; apical mandible forks poorly developed. Genitalia. Basal piece wide and short, 0.45× length of entire aedeagus; apical flagellum not enlarged, flagellum 3× length of entire aedeagus; aedeagus stout, incurved at basal 1/3, triangular distally.

Female. Body black, surface less setose than that of male, metallic; body stout, always smaller than major and median males, sometimes larger or subequal in length to minor male. Head black, surface punctate, with metallic luster; mandibles straight along midlength and apical 1/3; each mandibular tooth well developed, asymmetrical; right mandibular tooth triangular, that of left mandibular weakly convex along midlength; preocular and postocular margins strongly developed, forming acute angles, and protruding anteriorly; clypeolabrum single-pointed. Thorax pronotum concolorous with head, surface shinning, covered with vestiture of yellowish setae along lateral pronotal edges; pronotal disc densely punctate; anterior pronotum well enlarged, 0.8× width of posterolateral pronotum; prothoracic tibiae slender and black, each bearing four developed spines from anterior to midlength; distal two spines sharp, well developed; prothoracic tibiae 1.2× width of mesothoracic and metathoracic tibiae; mesothoracic tibiae black, each bearing two spines along midlength; metathoracic tibiae black, each bearing a single spine at basal 1/3. Elytra black, with metallic luster, concolorous with head and pronotum; oval, widest at apical 1/3, strongly narrow at basal 1/3.

Distribution. China (Yunnan).

Phenology. Adults of L. dirki were collected during late May.

Natural history. Typical plants for this species are unknown. Adult longevity is around 15–20 days.

Collecting methods. Light-trap collected.