Musculature of the male terminalia in geometrid moths of the subfamily Larentiinae (Lepidoptera,Geometridae)

The morphology of the male terminalia of 16 species belonging to 12 tribes of Larentiinae was studied; for 12 species and 4 tribes it was done for the first time. No clear diagnosis of Larentiinae based on the features of the male genital musculature can be given since the apomorphic position of M1, M4, and M7 muscles may originate independently in different tribes. The primitive Larentiinae retain the pattern of genital musculature plesiomorphic for Geometridae. Muscles M11 (Melanthiini: Anticollix sparsata) and M22 (Asthenini: Euchoeca nebulata and Hydrelia flammeolaria) are described for the first time for the family Geometridae.