Gymnoscelis confusata Walker, 1866

Schmidt, Olga, 2020, The structure and musculature of male terminalia in the Palaearctic and Indo- Australian species of the eupitheciine genera Eupithecia Curtis, Gymnoscelis Mabille, and Pasiphila Meyrick (Lepidoptera: Geometridae: Larentiinae), Zootaxa 4896 (2), pp. 224-238 : 226

Gymnoscelis confusata Walker

( Figs 5–6 )

The uncus is short, curved, somewhat finger-shaped, shifted to the ventral side of the tegumen. The tegumen is narrow, slightly expanded apically and hooded. The proximal area of the rather short anal tube is connected to the thin gnathos arms. The thin muscles m1 run medially from the anterior margin of the tegumen to the base of the uncus. The muscles m2(10) run from the tegumen, to the inner surface of the subscaphium on the anal tube. The valva is narrow and almost parallel sided in its apical part, with well-defined costa. The unusually long muscles m3(2) are attached to the ventral part of the tegumen, run deep into the costa valvae and attach to the medial part of the costa valvae. The weakly sclerotized base of the costa valvae is connected to the lateral region of the rather short, band-like transtilla. The labides arising from the base of the costa valvae ventrally consist of thin, curved anterior arms connected to the juxta laterally and thin posterior arms with, as is typical for the eupitheciines, medium sized papillae. The slightly twisted muscles m4 run from the lateral corners of the anterior margin of the tegumen, close to the m3(2), to the medial part of the rather small transtilla, whereas the ventral bunch runs to the medial, cupolashaped region of the transtilla, and the dorsal bunch runs to the membrane dorsad of the transtilla, as in G. derogata . The muscles m5(7) connect the medial part of the valvae with the weakly sclerotized hook close to the sacculus, with one bundle attached on the vinculum. The juxta is elongated dorso-ventrally, with the voluminous muscles m8(3) attached to the medio-dorsal area of the juxta, with the ventral layer of the muscles curved, short, running towards the ventral margin of the juxta and attached ventrad of it, and the dorsal layer long, connected to the upper margin of the saccus. The medium-sized, rounded sacs of coremata with long, thick hairs are present at the lateral margin of the vinculum. The aedeagus is medium sized, rather straight, with the muscles m6(5) running from the dorsal part of the vinculum, close to the m5(7), to the basal process of the aedeagus. The muscles m7a(6a) run from the saccus, slightly ventrad of the long layer of muscles m8(3), to the medio-dorsal part of the aedeagus. The slightly narrower muscles m7b(6b), which appear knotted, run from the medio-ventral part of the aedeagus, wrap around the m7a(6a) and are inserted on the vinculum, close to the m7a(6a).

Figures

FIGURES 5–6. Gymnoscelis confusata, male genitalia and muscles: 5. Armature (parts of the muscles m2(10) on the left side, m6(5) on the right side, and distal part of coremata not shown). 6. Aedeagus.