Jingguaeshna taoae Zheng & Zhang, 2021

ZHENG, DA-RAN, LI, SHA, ZHAO, YI-SHAN & ZHANG, HAI-CHUN, 2021, A potential telephlebiid dragonfly (Odonata: Anisoptera: Aeshnoidea) from Miocene of Yunnan, southwestern China, Palaeoentomology 4 (3), pp. 237-242 : 238

Jingguaeshna taoae Zheng & Zhang , sp. nov. ( Fig. 2 )

Holotype. NIGP174549 , a fragmentary hindwing with only distal half preserved, sex unknown.

Etymology. The specific name ‘tao’ is in honor of Mrs. Tao Hua (mother of ZY), who has contributed a lot for the fossil collections in Jinggu.

Diagnosis. Pt well braced, covering four cells; Pt brace strongly aligned with basal side of Pt, at same oblique angle as basal side of Pt; area between RP1 and RP2 with four rows of cells below Pt.

Type locality and Horizon. Jinggu Dai and Yi Autonomous County, Puer City, Yunnan Province, China; middle-upper Miocene Huihuan Formation.

Description. Wing hyaline ( Fig. 2 ), preserved length 25.3 mm; maximum width 12.0 mm. Pt short, covering four cells (i. e., 2.1 mm long and 0.6 mm wide), narrowly elongate, with basal side slightly more oblique than distal side. Pterostigmal brace aligned with and at same oblique angle as basal side of Pt. Twenty-one postnodal crossveins preserved basad of Pt, unaligned with 18 postsubnodal crossveins; three postnodal and five postsubnodal crossveins present distad of Pt, also unaligned. IR1 short, zigzagging, originating four cells basad of Pt-brace. RP2 curved basad of IR1 base. RP1 and RP2 parallel with Pt basally, separated by only one row of cells basad of IR1; distally divergent, separated by three cells width at level of Pt brace. IR2 forked basad of Pt with two rows of cells between branches at level of Pt. Area between RP2 and IR2 with one row of cells between them. Rspl well defined, parallel with lower branch of IR2 and separated by one row of cells; RP3/4 and MA running almost parallel basally, expanding to more than one row of cells separating them distally. Postdiscoidal area expanded distally. Mspl well defined, curved, parallel with MA and separated by one row of cells. CuAa with four posterior branches.

Figures

FIGURE 2. Jingguaeshna taoae Zheng & Zhang, gen. et sp. nov., holotype, NIGP174549. A, Photograph of holotype. B, Line drawing showing interpreted wing venation. C, Photograph showing details of MA and Mspl. D, Photograph showing details of pterostigmal area.