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Morphological variation in adult Xylotrupes gideon australicus (Scarabaeidae, Coleoptera, Insecta)
Author(s) -
Allsopp P. G.
Publication year - 1991
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1052070107
Subject(s) - biology , sexual dimorphism , french horn , scarabaeidae , zoology , mating , anatomy , psychology , pedagogy
Variation in horn and body size of both sexes of Xylotrupes gideon australicus is normally distributed with no evidence of dimorphism in either sex. This contrasts with that of X. gideon gideon , in which males are dimorphic for horn length, but horn size varies within morphs. Males of X. gideon australicus are generally larger than females, but the distributions of all characters, except tarsal length, overlap considerably. Males have longer legs, presumably to facilitate mating.