Philereme vetulata

Schmidt, Olga, 2017, Comparison of the structure and musculature of male terminalia in the tribes Operophterini, Phileremini and Triphosini (Lepidoptera: Geometridae: Larentiinae), Zootaxa 4237 (2), pp. 347-358 : 350

Philereme vetulata

( Figs 3–4 ).

The uncus is rather well-developed, though very thin, needle-like apically and broadened at the base. The remnants of the socii seem to be present, although not distinct, as they are not fully detached from the uncus, mostly fused with its modified and sclerotized base. The tegumen is small, rather narrow, composed of two lobes, with a posterior rounded notch, as in Pareulype , Solitanea and Triphosa . The gnathos arms are partly fused with the tegumen posteriorly, forming a broken medial ring anteriorly. The anal tube is extraordinarily long and thin, with a very long and narrow subscaphium. The muscles m1 run from the anterior margin of the tegumen towards the uncus and inserted in its base. The very long muscles m2(10) extend from the tegumen to the inner surface of the anal tube distally. The basal parts of the costa valvae are slightly twisted and projected inwardly, whereby the projection is connected to the roof-shaped labides, with the anterior arms of the labides rather short, curved and directed towards the juxta. The dorsal portion of the twisted base of costa valvae is connected to a complex pocketshaped sclerite (presumably a modified small ventral process), which apparently constitutes the lateral portion of the semitranstilla. The semitranstillae are connected membranously. The pocket-shaped sclerites are connected in turn to the lateral sides of the labides. The muscles m3(2) extend from the ventral corners of the tegumen ventrad of the muscles m1 to the ventral curve of the pocket-shaped sclerite. The muscles m4 extend dorsally from the vinculum to the lateral sides of the pocket-shaped sclerite close to the costa valvae, with a twisted bundle connecting the most dorsal part of the vinculum near the tegumen to the pocket-shaped sclerite, including the rather heavily sclerotized area between the base of the costa valvae and the lateral sides of the pocket-shaped sclerite. The valvae are extremely enlarged, with a finger-shaped distal extension of the sacculus. The muscles m5(7) consist of two thick bundles running from the proximal part of the valval lobe ventrad of the short costa to the medial part of the vinculum and from the area close to the finger-shaped distal extension of the sacculus to the base of the sacculus. The juxta is medium sized, slightly broadened at the base, located between the sacculi of the valvae and partly fused with the sacculi laterally. The muscles m8(3) are inserted on the posterior margin of the rounded saccus and run to the curves of the posterior margin of the juxta. The aedeagus is relatively small, slightly narrowed medially and enlarged distally, with an enlarged, partly dentate, compound cornutus in its vesica. The protractors of the aedeagus are attached to the basal process of the aedeagus and consist of two distinct bundles. The thin bundle of muscles m6a(5a) extend from the vinculum, close to the muscles m4, whereas the powerful muscles m6b(5b) are attached to the anterior margin of the saccus. The muscles m7(6) run from the anterior margin of the saccus, close to m6b(5b), to the middle portion of the aedeagus.

Figures

FIGURES 3 – 4. Philereme vetulata vetustata, male genitalia and muscles: 3. Armature (valval apices, parts of the muscles m 2 (10), m 4 and muscles m 5 (7) on the left side not shown). 4. Aedeagus.