Burmotachinymphes Cao, Wang & Liu, 2021

Chen, Xinrui, Chen, Peichao, Deng, Xinru, Yang, Qiang, Shi, Chaofan & Ren, Dong, 2022, A new mesochrysopid (Insecta: Neuroptera) from Upper Cretaceous, Zootaxa 5134 (4), pp. 597-600 : 597-598

Genus Burmotachinymphes Cao, Wang & Liu, 2021

Type species. Burmotachinymphes bilobata Cao, Wang & Liu, 2021 .

Revised diagnosis. Small to medium-sized mesochrysopids (forewing length of Burmotachinymphes bilobata 12.7 mm, Burmotachinymphes pengi sp. nov. is more than 20 mm by estimation). In forewing and hind wing, crossveins in RP area (i.e., RP+MA area in Cao et al., 2021) forming multiple gradate series; MA (i.e., MP 1 in Cao et al., 2021) simple. MP and CuA (i.e., MP2 and CuA in Cao et al., 2021) with marginal multiple pectinate branches in all wings (i.e., more than four marginal pectinate branches). No coalesced condition between RP, MA, MP and CuA in all wings. Longitudinal veins easily distinguished. Other diagnosis as Cao et al. (2021).

Species included. Two species from the Upper Cretaceous of Myanmar: Burmotachinymphes bilobata Cao, Wang & Liu, 2021 , Burmotachinymphes pengi sp. nov.

Remarks. The genus Burmotachinymphes is similar to Tachinymphes Ponomarenko, 1992 by RP, MA, MP and CuA not distally coalesced in forewing. However, there are some obvious differences between them. [1] In all wings of Burmotachinymphes, MA is simple, MP and CuA are pectinately branched. However, Tachinymphes generally has more complex venation and more longitudinal branches, and MP and CuA sometimes coalesced in hind wing (e.g., fused or meeting in one point in Tachinymphes paicheleri Nel et al., 2005 ). [2] In Burmotachinymphes , the distal marginal branches of MP and CuA have much more and regularly pectinate branches (i.e., the number of branches equal to or more than four), but in Tachinymphes, MP and CuA are generally dichotomously forked or with irregularly multiple forks.

Besides, the body size, the ratio of wing length to width, and the arrangement of crossveins in the radial area are regarded as the differences between Burmotachinymphes and Tachinymphes ( Cao et al. 2021) . The differences in the ratio of wing and the arrangement of crossveins are well supported by the new specimen of this paper, but the wing size of new specimen (forewing more than 20 mm by estimation) is indistinguishable from Tachinymphes (forewing length about 16–25 mm).