Eupithecia cf. subtacincta Hampson, 1895

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

Eupithecia cf. subtacincta Hampson , haworthiata species-group

( Figs 3–4 )

The uncus is much reduced, modified, shaped like a thin plate, weakly sclerotized laterally and membranous apically, without a medial process characteristic of most Eupithecia species. The margins of the thin plate are partly fused with the anal tube; the latter is membranous, bearing an elongated subscaphium. The gnathos arms are much reduced, forming a medially broken ring. The proximal area of the anal tube is connected to the gnathos. The thin muscles m1 connect the medio-lateral parts of the tegumen to the apical parts of the lateral sides of the uncus. The thin muscles m2(10) are attached to the tegumen, slightly dorsad of the proximal end of the muscles m1 and run parallel to the subscaphium inside the anal tube. The basal process of the costa valvae is medium sized and the muscles m3(2) run to its ventral margin from the proximal part of the tegumen, close to the vinculum. The labides arising from the base of the costa valvae ventrally consist of rather short bent anterior arms with narrow finger-like setose ventral papillae curved towards the juxta laterally and thin posterior arms bearing setose papillae apically. The transtilla is band-like, arising from the base of the costa valvae dorsad of the labides. The muscles m4, looking like two inseparable bundles, run from the ventral corner of the tegumen to the transtilla medially. The thin muscles m5(7) connect the inner wall of the valva (close to the base of costa valvae) to the middle part of the vinculum. The juxta is rather large, broadest crosswise. The saccus is relatively broad, distinctly excavate. The voluminous, curved muscles m8(3) broadly extend from the medio-dorsal area of the juxta to the posterior margin of the saccus, with lateral fibres slightly longer than the medial ones. The medium sized, ovate sacs of the coremata are present at the lateral margin of the vinculum. The aedeagus is large, broadest at the base, with several long and short cornuti of different shape in the vesica, with the muscles m6(5) running from the vinculum to the basal process of the aedeagus. The slightly twisted muscles m7(6) connect the large lateral curves of the saccus to the distal part of the aedeagus.

Figures

FIGURES 3–4. Eupithecia cf. subtacincta, male genitalia: 3. Armature (left valva partly removed, proximal part of the anal tube, parts of the muscles m1, m2(10), and m3(2) on the left side not shown). 4. Aedeagus.