Nematus clitellatus
Nematus trisignatus
Nematus
Pachynematus foveolatus
Pachynematus truncatus
Pachynematus extensicornis
Checklist of British and Irish Hymenoptera - Sawflies, ' Symphyta'
Liston, Andrew D.
Knight, Guy T.
Sheppard, David A.
Broad, Gavin R.
Livermore, Laurence
Biodiversity Data Journal
2014
2
1168
1168
Serville, 1823
Serville
1823
Insecta
Tenthredinidae
Pachynematus
CoL
Animalia
Pachynematus clitellatus
Hymenoptera
0
1168
Arthropoda
species
clitellatus
Nematus clitellatusServille, 1823 Nematus trisignatus( Foerster, 1854, Nematus) Pachynematus foveolatusKonow, 1903 Pachynematus truncatusBenson, 1948 Pachynematus extensicornis(Norton, 1861): misident.
Distribution England, Scotland, Wales, Ireland
Notes Taeger and Blank (1998)regard Pachynematus clitellatusand Pachynematus fallaxas morphologically highly variable species, which together include most of the previously described W. Palaearctic taxa. Their arguments for this are well reasoned, but at present it seems prudent to continue to regard several of the more distinctive morphological segregates, treated as species by Benson (1958), as separate taxa, because morphologically intermediate specimens are rare (at least in the male sex). The taxonomy of the whole group requires further intensive work, including genetic analysis. According to Taeger and Blank (1998) Pachynematus kirbyi, treated here as valid, is a synonym of Pachynematus clitellatus.