Dysstroma citrata (Linnaeus)

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 : 404

Dysstroma citrata (Linnaeus)

( Figs 9–10 )

The uncus is stout, broadened at the base, with small, curved, sclerotized lateral swellings. The medium-sized muscles m1 connect the lateral portions of the anterior margin of the tegumen to the base of the uncus. The lateral projections of the anterior margin of the tegumen are distinct, and the following two pairs of muscles are inserted here: the retractors of the anal tube m2(10) running parallel to the subscaphium, which is formed by two longitudinal thin weakly sclerotized stripes grown together distally, towards the distal part of the anal tube; and the extensors of the valvae, thin muscles m3(2) running to the short outgrowth of the base of the costa valvae very close to the transtilla. The muscles m4 connect the vinculum with the anterior margin of the base of the costa valvae, with a small bundle attached to the lateral portion of the transtilla. The valva is simple, roundly broadened distally. The very small muscles m5(7) are located lying transversely in the sacculus. The juxta is small, with thin, densely setose dorso-lateral appendages, and with the short muscles m8(3) running from the posterior margin of a shallow saccus to the medial portion of the juxta. The aedeagus is large, with two groups of cornuti, with the muscles m6(5) extending from the vinculum to the basal process of the aedeagus. The muscles m7(6) run from the anterior margin of the saccus to the medio-distal area of the aedeagus.

Remarks. The genital musculature of Dysstroma truncata (Hufnagel, 1767) was illustrated by Valersky (2011).

Figures

FIGURES 9 – 10. Dysstroma citrata, male genitalia and muscles: 9. Armature (proximal part of subscaphium, proximal part of muscles m 2 (10) on the left side, middle part of muscles m 4 on the right side and muscles m 6 (5) on the left side not shown). 10. Aedeagus.