Sinogranulus jinsuoguanensis Fu & Huang, 2022

Fu, Yan-Zhe, Gao, Jian & Huang, Di-Ying, 2022, Revision of the genus Sinogranulus (Hemiptera, Granulidae) with description of a new species from the Middle Triassic of China, Palaeoentomology 5 (1), pp. 81-89 : 84-86

Sinogranulus jinsuoguanensis Fu & Huang sp. nov.

( Figs 4–7 )

Material. Holotype, NIGP179639 , isolated forewing, with part and counterpart; paratypes, three isolated forewings ( NIGP179640 – NIGP179642 ); deposited in the Nanjing Institute of Geology and Palaeontology , Chinese Academy of Sciences, Nanjing, China.

Etymology. The specific epithet is derived from “Jinsuoguan”, the name of a town where the specimens were discovered.

Diagnosis. Tegmen with stem R deeply forked, with 5–7 terminal branches (3–4 terminal branches in S. qishuiheensis ); stem MP curved towards CuA, forked basad of basal crossvein r-mp (MP forked obviously apicad of basal crossvein r -mp in S. qishuiheensis ); CuA bent strongly and very close to CuP, creating broad, spoon-shaped radial and median cells.

Type locality and horizon. A locality near Hejiafang Village , Jinsuoguan Township , Yintai District , Tongchuan City , Shaanxi Province, China; lower parts of the Yanchang Formation; Middle Triassic .

Description. Tegmen length 6.3–7.3 mm; granular ornamentations evenly distributed over tegmen surface with different diameter; with dark-colored bands distributed in radial and median cells, and mottled for its remaining part; costal margin smoothly arched, thickened; anteroapical and posteroapical angles widely rounded; apical margin rounded; outer membrane narrow; hyposubcostal carina strongly convex; basal cell short; basal crossvein cua-cup inclined; postcostal cell nearly as wide as widest portion of radial and median cells; stem R long, curved basally, then almost straight, with 5–7 terminal branches; stem MP almost straight and subparallel to R before tegminal midlength, then strongly curved toward CuA, MP with at least four terminal branches; stem CuA subparallel to MP after separated from common stem R+MP+CuA, then strongly curved and close to vein CuP at basal about 1/4 tegminal length; CuA 1 entirely fused to stem MP and crossvein mpcua replaced by free base of CuA 1; crossvein mp-cua long and inclined; CuP straight; clavus missing.

Figures

FIGURE 4. Sinogranulus jinsuoguanensis sp. nov., photographs of holotype, lower parts of the Yanchang Formation, Shaanxi Province, northern China. A, Part, NIGP179639a. B, Counterpart, NIGP179639b. C, Basal portion of wing. D, Apical portion of wing. E, Granular ornamentations. F, Enlargement of E. Scale bars: 1 mm in A, B, 500 μm in C–E, 100μm in F.

FIGURE5. Sinogranulus jinsuoguanensis sp. nov., photographs ofparatype (NIGP179640),lower parts of theYanchang Formation, Shaanxi Province, northern China. A, Part, NIGP179640a. B, Counterpart, NIGP179640b. C, Enlargement of B, showing apical portion of wing. D, Enlargement of A, showing apical portion of wing. Scale bars: 1 mm in A, B, 500 μm in C, D.

FIGURE 6. Sinogranulus jinsuoguanensis sp. nov., photographs of paratypes, lower parts of the Yanchang Formation, Shaanxi Province, northern China A, NIGP179641. B, NIGP179642. C, Enlargement of B, showing basal portion of wing. D, Enlargement of A, showing apical portion of wing. Scale bars: 1 mm in A, B, 500 μm in C, D.

FIGURE 7. Sinogranulus jinsuoguanensis sp. nov., line drawings of A, NIGP179639. B, NIGP179640.