Charissa (Pterygnophos)

Erlacher, Sven, Palma, Laura Marrero & Erlacher, Josepha, 2017, A systematic revision of Charissa, subgenus Pterygnophos Wehrli, 1951, with description of a new species (Lepidoptera: Geometridae), Zootaxa 4341 (3) : -

Key to Charissa (Pterygnophos) species: male genitalia structures

(Abbreviations in brackets refer to Fig. 1a )

1 Sclerotized dilation present close to base of costa ( sd)....................................................... 2

- Without sclerotized dilation close to base of costa........................................................... 3

2 Sclerotized dilation ( sd) with serrate keel, juxta ( ju) almost symmetrical..................... C. (P.) beljaevi spec. nov.

- Sclerotized dilation swollen with minute spines, juxta usually distinctly asymmetrical................. C. (P.) creperaria

3 Valva processes ( vp) about half of costa length, length of ventral valva margin ( vm) 2.2–2.9 mm, without costal thorns............................................................................................. C. (P.) agnitaria

- Valva processes about 1/5 of costa length, length of ventral valva margin 2.0– 2.3 mm, with costal thorns..................................................................................................... C. (P.) ochrofasciata

Figures

FIGURE 1. Structures of the genitalia in Charissa, subgenus Pterygnophos, based on the example of C. (P.) beljaevi spec. nov. a) — male, b) — female. ab: appendix bursae; ae: aedeagus; an: antrum; ap: apex; c: cornutus; cb: corpus bursae; co: costa; gn: gnathos; ju: juxta; op: ovipositor; pvp: postvaginal plate; sa: saccus; slf: spined longitudinal folding; sd: sclerotized valva dilation; un: uncus; vm: ventral valva margin; vp: valva process.