Epipharyngeal Morphology in Hyperini Larvae (Coleoptera, Curculionidae, Hyperinae)

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Abstract

Investigation of the main epipharyngeal structures in representatives of Hyperini weevils larvae has shown that in general case 6 als, 2 (4) ams, 4 mes and 2 snp present: Coniatus (Bagoides) splendidulus (Fabricius, 1781) - 6 als, 2 ams, ?1 mes, 2 x 3 snp, Donus bucovinensis (Penecke, 1928) - 6 als, 2 ams, 4 mes, 2 x 5 snp, D. geminus (Zaslavskij, 1967) - 6 als, 2 ams, 4 mes, 2 x 5 snp, Hypera (Eririnomorphus) rumicis (Linnaeus, 1758) - 6 als, ?4 ams, 4 mes, 2 x 2 snp, H. (Hypera) miles (Paykull, 1792) - 6 als, ?4 ams, 4 mes, 2 x (4-5) snp, H. (H.) transsylvanica (Petri, 1901) - 6 als, 2 ams, 4 mes, 2 x (3-5) snp, Limobius borealis (Paykull, 1792) - 6 als, 2 ams, 4 mes, 2 x 4 snp. By morphological peculiarities of epipharyngeal surface the studied larvae can be divided into next 4 groups: 1) epipharynx with wide flat areas, short setae and shallow emargination (C. splendidulus); 2) with wide flat areas, medium-sized setae, strait and sharp excision on anterior margin (D. bucovinensis, D. geminus); 3) with short flat areas, medium to long setae and wide apical emargination (H. miles, H. rumicis, H. transsylvanica); 4) with uneven surface, large long setae and short emargination (L. borealis). It is supposed that morphological peculiarities of ephiphaynx in Hyperini relate to type of feeding.

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Vestnik Zoologii

The Journal of National Academy of Sciences of Ukraine, Schmalhauzen Institute of Zoology

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