Lacinia

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American cockroach maxilla ( Periplaneta americana ) with inscription of the individual parts

The lacinia (lat. "Tip"; plural laciniae ) is the inner chew of the maxilla of the insects and belongs to the mouthparts . It sits together with the galea (outer ark) on the stipes and together with this, the mandible and the glossa and paraglossa belonging to the labium, serve to chop up the food. For this purpose, it is often equipped with teeth or thorns at the front and on the inner surface.

In some insects the mouthparts are transformed into stinging-sucking mouthparts. In the Schnabelkerfen (including bed bugs , plant lice and cicadas ) the Laciniae form the central piercing bristle with a folded double tube with which saliva is conducted into the food and the food itself into the mouth. The lacininiae (together with the labrum ) also represent stinging bristles in fleas , while they are almost completely reduced in butterflies and mosquitoes .

supporting documents

  1. ↑ Lacinia. In: Herder-Lexikon der Biologie. Spektrum Akademischer Verlag, Heidelberg 2003, ISBN 3-8274-0354-5 .
  2. ^ Gerhard Seifert: Entomological internship. Georg Thieme Verlag, Stuttgart 1975, ISBN 3-13-455002-4 , p. 266.
  3. ↑ Willi Hennig : Invertebrates II. 5th edition. Gustav Fischer Verlag, Jena 1994, ISBN 3-334-60936-7 , pp. 198-199, 224, 230, 237.