Colostygia olivata (Denis et Schiffermüller), Denis et Schiffermuller

Schmidt, Olga, 2014, Comparison of the structure and musculature of male terminalia in the tribe Cidariini Duponchel (Lepidoptera: Geometridae: Larentiinae) once again throws into doubt a sister relationship with the Xanthorhoini, Zootaxa 3856 (3), pp. 399-418 : 403-404

Colostygia olivata (Denis et Schiffermüller)

( Figs 5–6 )

The uncus is medium-sized, broad at base, with small rounded shoulders. The rather thin muscles m1 run from the lateral areas of the anterior margin of the relatively small tegumen to the base of the uncus. The muscles m2(10) connect the lateral processes of the tegumen with the distal part of the anal tube, which bears a longitudinal subscaphium. The muscles m3(2) run from the tip of the lateral processes of the tegumen to the base of the costa valvae near the transtilla. The muscles m4 extend from the middle parts of the vinculum, near the m6(5), to the transtilla laterally. The valvae are short for the tribe, with the costa separated from the valvula by a narrow, membranous longitudinal furrow. The thin ventral transtilla arms are directed towards the juxta. The juxta is medium-sized, with the labides set dorso-laterally, with an incomplete ridge between the bases of the labides and the juxtal plate. Short muscles, m8(3), link the posterior margin of the saccus with the anterior part of the juxta. The presence of the muscles m5(7) needs to be confirmed. The aedeagus is relatively large, with the muscles m6(5) running from the distal area of the vinculum to the basal process of the aedeagus. The muscles m7(6) extend from the anterior margin of the broad shallow saccus to the medial portion of the aedeagus.

Figures

FIGURES 5 – 6. Colostygia olivata, male genitalia and muscles: 5. Armature (proximal part of subscaphium, muscles m 5 (7), muscles m 6 (5) on the right side not shown). 6. Aedeagus.