| 释义 |
eucone, a. Ent.|ˈjuːkəʊn|
[a. G. eucone (H. Grenacker 1877, in Klin. Monatsblätter f. Augenheilkunde Suppl. XV. 18), f. eu- + cone n.1]
Of the eyes of certain insects: having a well-developed or true cone (see quots.).
1885S. J. Hickson in Q. Jrnl. Microsc. Sci. XXV. 230 The crystalline cone of the ‘eucone eyes’. 1888Rolleston & Jackson Forms Anim. Life 502 The vitreous cells..are reduced to feeble remnants inclosing a solid crystalline cone composed of 2–5 parts, the eucone eyes of other Insecta... In pseudocone and eucone eyes the seven cells are grouped round a central axis. 1957A. D. Imms Gen. Textbk. Ent. (ed. 9) 104 Eucone eyes. In eyes of this type each ommatidium contains a true crystalline cone, which is a hard refractive body formed as an intracellular product of the cone cells. |