Fine Structure of the Compound Eye of the Dung Beetle Ochodaeus maculatus (Coleoptera, Scarabaeidae)
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概要
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Ochodaeus maculatus, approx. 1 cm in body length, is a diurnal dung beetle. The compound eye is hemispherical in shape without any trace of a canthus. Each ommatidium is equipped with cones of eucone type and thus, fits the scoptopic eye model. The basal retinula cell extends distally to near the distal part of the rhabdom region. A distal rhabdom which has been known from nocturnal or nocto-diurnal species is present. The proximal rhabdom is formed by six retinula cells other than the basal retinula cell. Transverse sections of the rhabdom at mid level show a "butterfly-shaped" pattern with microvilli oriented in orthogonal directions. A configuration such as this is thought to represent an intermediate type between the diurno-nocturnal and the diurnal species bearing a scotopic eye.
- 日本昆虫学会の論文
- 1989-12-25
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