Lithohypna chifengensis Nikolajev, Wang

Wang, Bo & Zhang, Haichun, 2011, A new fossil genus of the family Glaphyridae (Coleoptera: Scarabaeoidea) from the Lower Cretaceous Yixian Formation, Zootaxa 2811, pp. 47-52 : 49

Lithohypna chifengensis Nikolajev, Wang , & Zhang, new species

( Figs. 8–10 )

Holotype. A well-preserved imprint of the dorsal side NIGP 152467 ( Figs. 8–9, 11 ). Deposited in the Nanjing Institute of Geology and Palaeontology ( NIGP), Chinese Academy of Sciences.

Paratype. A single well-preserved imprint of the abdominal side NIGP 152468 ( Figs. 10, 12 ). Deposited in the Nanjing Institute of Geology and Palaeontology ( NIGP), Chinese Academy of Sciences.

Etymology. Named for the type locality, Chifeng City.

Diagnosis. See the generic diagnosis above.

Description. Body length nearly 15 mm. Dorsal surface of clypeus with short, horn-shaped tubercle. Pronotum as wide as long, trapezoidal, narrowing anteriorly, with rounded lateral margins; anterior angles acute; posterior angles widely rounded. Elytra widest in the middle; about 2.8 times as long as wide. Protibia with three teeth on the outer margin; apex of the middle denticle is directed outward.

Measurements (Holotype) Body length 14.2 mm (from mandibular apex to pygidial apex); head width 2.63 mm; pronotum length 3.0 mm pronotum width 4.26 mm; elytron length 8.31 mm, width 2.95 mm; profemur width 0.81 mm; protibia length at least 2.27 mm; protarsus length at least 2.29 mm (excluding the apex of fifth protarsomere); mesofemur width 1.06 mm; mesotibia length 2.33 mm; mesotibia apical width 0.57 mm; metafemur width 1.23 mm; metatibia length 3.47 mm; metatibia apical width 0.79 mm.

Figures

FIGURE 8. Lithohypna chifengensis new genus and species, holotype NIGP 152467, dorsal view.

FIGURES 9 – 12. Lithohypna chifengensis new genus and species, photographs of imprints: 9, 11 — holotype NIGP 152467 (9 — general view (excluding the imprint in the lower right corner), 11 — proleg); 10, 12 — paratype NIGP 152468 (10 — general view, 12 — metatibia).