Revision of Stauronematus Benson, 1953 and additions to the sawfly fauna of Corsica and Sardinia (Hymenoptera, Tenthredinidae).

Abstract

Cladius pallipes Serville, 1823 is a new synonym of Tenthredo compressicornis Fabricius, 1804. The valid name of the species formerly known as Stauronematus compressicornis (F.) is Stauronematus platycerus (Hartig, 1840) comb. nov. Valid name of Cladius (Priophorus) pallipes Serville is Cladius (Priophorus) compressicornis (F.) comb. nov. Type species of Stauronema Benson, 1948 (preoccupied) and its replacement name Stauronematus Benson, 1953 is here fixed as Nematus platycerus Hartig, 1840. Stauronematus saliciphilus sp. n. is described from Corsica and Sardinia. Hostplant is Salix atrocinerea. Stauronematus saliciphilus is compared with its only other known congener S. platycerus, larval hosts Populus spp. Lectotypes are designated for Tenthredo compressicornis, Nematus platycerus and Nematus callicerus Thomson, 1863. Previous statements that Stauronematus Benson, 1953 has a Holarctic distribution are mistaken. At present, definite records are only from the Palaearctic. Three species of Tenthredinidae are recorded for the first time in Corsica and six in Sardinia. The important role of Salix species for the diversity of the sawfly fauna of Corsica and Sardinia is highlighted.

Keywords

Taxonomy, distribution, Stauronematus, Cladius, Corsica, Sardinia, Salix.

Nomenclatural Acts

pallipes Lepeletier, 1823 (Cladius), syn. n. of Cladius (Priophorus) compressicornis (Fabricius, 1804)
pallipes Serville, 1823 (Cladius), syn. n. of Cladius (Priophorus) compressicornis (Fabricius, 1804)
compressicornis (Fabricius, 1804) (Cladius (Priophorus)), Lectotype; comb. n. hitherto Tenthredo compressicornis
callicerus Thomson, 1863 (Nematus), Lectotype now a synonym of Stauronematus platycerus (Hartig, 1840)
platycerus (Hartig, 1840) (Stauronematus), Lectotype; comb. n. hitherto Nematus platycerus
saliciphilus Liston, 2007 (Stauronematus), spec. n.