siphunculusn.

Forms: Plural siphunculi.

Etymology: Latin sīphunculus a little pipe, diminutive of sīpho siphon n.Previous versions of the OED give the stress as: siˈphunculus.

Zoology.

1. = siphuncle n. 1.Anglicized as siphuncule by Mayne Expos. Lex. (1858).

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Cephalopoda > [noun] > member of > parts of > tube connecting shell-chambers

siphunculus1752

siphon1822

siphuncle1822

sipho1888

1752 J. Hill Gen. Nat. Hist. III. 121 A siphunculus carried the whole length of the shell [of the nautilus].

1765 Philos. Trans. 1764 (Royal Soc.) 54 48 The siphunculus of the Belemnite is always upon the verge of the chamber, or cell.

1822 J. Parkinson Outl. Oryctol. 164 The chambers divided by winding septa, pierced by a siphunculus always placed at the outer side.

1836 W. Buckland Geol. & Mineral. I. xv. 332 Families of fossil chambered shells, that possessed siphunculi.

2. Entomology. A tubular appendage on the abdomen of aphids, which lets out a waxy substance when the animal is attacked that acts as an alarm pheromone; (formerly believed to be the tube from which honeydew comes). Usually called a cornicle.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > subclass Pterygota > [noun] > division Exopterygota or Hemimetabola > order Hemiptera > suborder Homoptera > family Aphis > abdominal tube secreting fluid

siphonet1826

siphuncle1826

honey tube1841

nectary1890

siphunculus1939

1939 V. B. Wigglesworth Princ. Insect Physiol. x. 233 At the apex of the abdominal tubes or siphunculi of Aphids are ostioles..which allow wax-laden blood cells to escape.

1975 Jrnl. Zool. 175 280 When prodded or attacked by parasites or predators aphids often exude these cells bathed in fluid from their siphunculi.

This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2019).

单词	siphunculus
释义	siphunculusn. Forms: Plural siphunculi. Etymology: Latin sīphunculus a little pipe, diminutive of sīpho siphon n.Previous versions of the OED give the stress as: siˈphunculus. Zoology. 1. = siphuncle n. 1.Anglicized as siphuncule by Mayne Expos. Lex. (1858). ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Cephalopoda > [noun] > member of > parts of > tube connecting shell-chambers siphunculus1752 siphon1822 siphuncle1822 sipho1888 1752 J. Hill Gen. Nat. Hist. III. 121 A siphunculus carried the whole length of the shell [of the nautilus]. 1765 Philos. Trans. 1764 (Royal Soc.) 54 48 The siphunculus of the Belemnite is always upon the verge of the chamber, or cell. 1822 J. Parkinson Outl. Oryctol. 164 The chambers divided by winding septa, pierced by a siphunculus always placed at the outer side. 1836 W. Buckland Geol. & Mineral. I. xv. 332 Families of fossil chambered shells, that possessed siphunculi. 2. Entomology. A tubular appendage on the abdomen of aphids, which lets out a waxy substance when the animal is attacked that acts as an alarm pheromone; (formerly believed to be the tube from which honeydew comes). Usually called a cornicle. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > subclass Pterygota > [noun] > division Exopterygota or Hemimetabola > order Hemiptera > suborder Homoptera > family Aphis > abdominal tube secreting fluid siphonet1826 siphuncle1826 honey tube1841 nectary1890 siphunculus1939 1939 V. B. Wigglesworth Princ. Insect Physiol. x. 233 At the apex of the abdominal tubes or siphunculi of Aphids are ostioles..which allow wax-laden blood cells to escape. 1975 Jrnl. Zool. 175 280 When prodded or attacked by parasites or predators aphids often exude these cells bathed in fluid from their siphunculi. This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2019). < n.1752
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