戴锤角粪金龟 Bolbotrypes davidi

科 (Family):粪金龟科 Geotrupidae

属 (Genus):锤角粪金龟属 Bolbotrypes

Bolbotrypes davidi Fairmaire, 1891

Habitus of Natural History (HNH)

Description. Male length 8.0–12.0 mm; greatest width at pronotal base 6.5–7.0 mm. Head: Surface coarsely punctate; primary punctures on clypeus, frons and sides of pronotum adjacent to tubercles confluent with sparse punctures behind carina and intermixed with tiny secondary punctures. Outer margin of mandibles rounded and feebly curved inwardly at apical third. Clypeus transversely arcuate and feebly convex at center. Eye protruding, moderately large, canthus rounded on anterior margin. Frons with a transverse erect carina, crest of carina trilobed with central protrusion more developed than lateral ones. Thorax: Pronotum overall coarsely punctate with anteromedian, transverse carina and two lateral tubercles more anterior in position than carina; anterior pronotal face beneath carina inclined; surface heavily punctate. Scutellum glabrous and finely punctate at basal fourth; subtriangular in shape, slightly longer than wide medially. Elytron: With seven distinctly punctate striae between suture and humeral umbone, punctures moderate in size; intervals impunctate, distinctly convex. Epipleuron with a longitudinal tubercular convexity at basal third. Metasternal disc rhomboid in outline, longitudinal carina well developed; middle coxae narrowly separated by spine-like metasternal process. Legs: Fore tibia with nine distinct teeth on outer margin, apical tooth obtuse. Male genitalia: Length ≈2.1 mm; apex of paramere finely sparsely punctate in dorsal view, ventral side with transversely sclerotized area irregular in shape and tiny punctures located above and at side; median lobe with dense long setae apically.

Female length 8.0–12.0 mm; greatest width 6.5–7.0 mm. Similar to males except for the following three noticeable respects: frontal carina with equally developed trilobed protrusion; coarser punctures distributed over area behind pronotal carina densely intermixed with fine secondary punctures; fore tibia with apical tooth broadened at base.

  • 戴锤角粪金龟 Bolbotrypes davidi HNH1:7月 Jul.
  • 戴锤角粪金龟 Bolbotrypes davidi HNH1:冯浈皓

标本库照片拍摄坐标 (Location of Images Taken)

戴锤角粪金龟 Bolbotrypes davidi HNH1:32°0’44.046″ N 118°56’47.076″ E (中国江苏省南京市佘村)

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