Sitona macularius (Marsham, 1802)

Sapronov, V. V., 2017, A case of teratology in weevil Sitona macularius (Marsham, 1802) (Coleoptera, Curculionidae), Far Eastern Entomologist 342 (342), pp. 43-44 : 43

Sitona macularius (Marsham, 1802)

MATERIAL EXAMINED. Russia: Sverdlovskaya oblast , Kamensk District, Okulovo village, 56°10'N, 61°57'E, 112 m, 2.VII 2011, 1 ♀ .

DESCRIPTION OF ABNORMALITY. The female has two equivalently developed fully formed tarsi on the distal part of the left mid tibia. The basal segment of each tarsus is located in separate, contiguous true corbel at apex of tibia ( Figs 1, 2 ). The distal part of the tibia with the malformation extended in comparison with the top of the normally developed tibia. The tarsi do not differ in their size and shape from the normal form. The segments of tarsi and claws are developed like on the right mid leg. All tarsomeres are covered with hair.

43

Figures

Figs 1–2. Apex of the left mid leg of Sitona macularius. 1 – ventral view; 2 – dorsal view.