xyelidae造句

• Br閎isson, 1818 a junior homonym and therefore unavailable for a genus of Xyelidae ( Insecta, Hymenoptera ).
• Hymenoptera in the form of Symphyta ( Xyelidae ) first appeared in the fossil record in the Lower Triassic.
• The "'Xyelidae "'are a small family of sawflies known from fewer than 50 boreal regions, though there are a few neotropical species.
• Of the other families, the Blasticotomidae and Megalodontidae are Palearctic; the Xyelidae, Pamphilidae, Diprionidae, Cimbicidae, and Cephidae are Holarctic, while the Siricidae are mainly Holarctic with some tropical species.