Largusoperla difformitatem Chen, 2018a

Chen, Zhi-Teng & Wang, Bo, 2019, Review of the fossil genus Largusoperla (Plecoptera: Perlidae): Annotated checklist, taxonomic identification, and description of a new species, Zootaxa 4565 (2), pp. 281-291 : 282

Largusoperla difformitatem Chen, 2018a

Largusoperla difformitatem Chen 2018a . Zootaxa, 4442(4): 573. Specimen status: male holotype, CZT-PLE-MA2 (ICJUST).

Remarks. Largusoperla difformitatem can be distinguished from congeners by the paraprocts asymmetrical, left paraproct subtriangular with sharp apex, widened at mid-length, right paraproct subtriangular with sharp apex, constricted at mid-length ( Fig. 1 , Fig. 2A ). In addition, L. difformitatem has subapical angles on anterior margin of all wings, which is absent in other congeners.

Figures

FIGURE 1. Available male paraprocts and female subgenital plates in Largusoperla, ventral view.

FIGURE 2. Photograph of terminalia. A. Largusoperla difformitatem, ventral view; B. Largusoperla dewalti, ventral view; C. Largusoperla borisi, ventral view; D. Largusoperla crassus, ventral view; E. Largusoperla crassus, dorsal view.