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

V. Yu. Nazarenko 1
  • 1 Schmalhausen Institute of Zoology, NAS of Ukraine, vul. B. Khmelnytskogo, 15, Kyiv, 01601 Ukraine

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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