Galea (insect)
American cockroach maxilla ( Periplaneta americana ) with inscription of the individual parts
The galea (Latin for "helmet"), also known as the outer chest or lobus externus maxillae, is the outer chew of the insect's maxilla and thus belongs to the mouthparts . It sits on the stipes together with the lacinia (inner drawer) . Like this in the upper area, it can often be equipped with teeth or thorns on the inner surface.
In some insects the mouthparts are transformed into stinging-sucking mouthparts. In mosquitoes , the galeae form the stinging bristles together with the mandibles , the labrum and the hypopharynx . The galeae are particularly pronounced in butterflies , where they form the proboscis that can be rolled up, while the laciniae are almost completely reduced, and they also form a proboscis in bees .
supporting documents
- ↑ a b Keyword "Galea" and "Außenlade" In: Herder-Lexikon der Biologie . Spektrum Akademischer Verlag GmbH, Heidelberg 2003, ISBN 3-8274-0354-5 .
- ^ Gerhard Seifert: Entomological internship. Georg Thieme Verlag, Stuttgart 1975; P. 266, ISBN 3-13-4550-02-4 .
- ^ Willi Hennig : Wirbellose II. 5th edition, edited by Wolfgang Hennig and Gerhard Mickoleit, Gustav Fischer Verlag, Jena 1994; Pp. 198-199, 224, 230, 237, ISBN 3-334-60936-7 .