| 释义 |
‖ furca|ˈfʊrkə|
[L.]
1. Rom. Antiq. (and allusively). A gallows.
1653Jer. Taylor XXV Serm. Gold.-Grove xii. 162 They shall escape the furca and the wheel. 1779Gentl. Mag. XLIX. 460 The American General deserved a furca rather than a mischianza.
2. Ent.
a. An apodeme or process in the thorax of many insects.
1895Cambr. Nat. Hist. V. i. 103 Entothorax (apophysis or furca). 1910C. G. Hewitt House Fly 9 The theca rests on a triradiate chitinous sclerite—the furca, which consists of a median, slightly convex rod. 1925A. D. Imms Gen. Textbk. Ent. 47 The endosternites (apophyses of some writers) are commonly represented by the furcæ; each furca is a median apodeme, unpaired at its base, with two free distal arms. Ibid. 598 The theca..articulates distally with a short rod or furca. 1969R. F. Chapman Insects viii. 131 In higher insects the two apophyses arise together in the midline and only separate internally, forming a Y-shaped furca.
b. = furcula 3.
1939H. Womersley Prim. Insects S. Austral. 81 In most species [of Collembola], the fourth ventral segment carries a pair of large, partially fused, appendages which form the characteristic spring or furca. 1969R. F. Chapman Insects ix. 154 The jump is produced by the sudden release of the furca.
3. Zool. A pair of divergent processes on the last abdominal segment of certain crustaceans.
1903J. S. Kingsley tr. Hertwig's Man. Zool. 420 The terminal abdominal segment [of the Copepoda] is two⁓forked, forming the ‘furca’. 1932Borradaile & Potts Invertebrata xii. 303 On the telson [of Crustacea] usually..is a pair of caudal rami forming the caudal furca. 1956Nature 11 Feb. 289/2 In the arrangement of the setæ on uropods and furca the new species is similar to Th[ermobathynella] leleupi. |