Sinoerasipteron xiaheyanensis Nel & Huang, 2024

Nel, André, Ji, Gaozhe, Gao, Jian & Huang, Diying, 2024, A new griffenfly genus and species from the Early Pennsylvanian of the Xiaheyan locality (Ningxia, China) (Insecta: Odonatoptera), European Journal of Taxonomy 925, pp. 67-75 : 69-71

Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov.

urn:lsid:zoobank.org:act:C76DAF12-4850-41CF-A727-5D6332A81DF7

Figs 2–3

Diagnosis

As for the genus, by monotypy.

Etymology

Named after the Xiaheyan locality (Ningxia, China).

Material examined

Only one specimen collected from the black shale of the Tupo Formation at Xiaheyan locality, without counterpart.

Holotype CHINA • imprint of a forewing, with extreme base missing and apex folded; Xiaheyan, Muscovian Tupo Formation; stored at Nanjing Institute of Geology and Palaeontology; NIGP202927 ; CAS.

Description

Imprint of moderately well preserved forewing (for justification see below), nearly complete, with extreme base missing; wing elongate not triangular-shaped; preserved length 68.1 mm, maximum width 10.8 mm; anterior wing margin and ScP straight; ScP reaching anterior wing margin opposite fork between RP1/2 and RP3/4 (i.e., at 30% of wing length); RA distally fused with C into strong costal vein; area between RA and RP1 with strong oblique crossvein at point of fusion of RA with C, basad origin of IR1; arculus at ca 8.0 mm from wing base; RP+MA 2.5 mm long; stem of of RP 10.0 mm long basad fork between RP1/2 and RP3/4; three longitudinal veins in area between IR1 and RP2; RP1/RP2 fork 27.5 mm distal of fork between RP1/2 and RP3/4; IR2 with two-three posterior branches; RP3/4 simple; MA with seven posterior branches; MP simple, undulated; CuA regularly posteriorly pectinate, with seven posterior branches; CuP- and CuA-crossings difficult to identify; CuP with long stem, seven-eight branches, and three-four rows of cells between it and posterior margin of wing; two rows of cells between AA and posterior margin of wing with four-five poorly defined posterior branches.

Age and outcrop

Tupo Formation at Xiaheyan locality, Zhongwei County, Ningxia Hui Autonomous Region, NW China; Moscovian, Pennsylvanian.

Figures

Fig. 2. Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov., holotype (NIGP202927). Photograph. Scale bar = 5 mm.

Fig. 3. Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov., holotype (NIGP202927). Reconstruction. Scale bar = 5 mm.