Largusoperla crassus Chen, 2018c

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 : 283-284

Largusoperla crassus Chen, 2018c

Largusoperla crassus Chen 2018c . Zootaxa, 4462(2): 296. Specimen status: male holotype, CZT-PLE-MA5 (ICJUST).

Remarks. Largusoperla crassus can be distinguished from other congeners by the paraprocts asymmetrical, subtriangular and slightly upcurved, apparently mostly sclerotized except for the paler bases; left paraproct narrow,

right paraproct expanded, apex blunt, subapically with several creases ( Fig. 1 , Figs. 2 D-E). This species is the only currently described Largusoperla species with well-visible tergal structures.

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.