Tenthredinidae

Tenthredinidae is the largest family of sawflies, with well over 7,500 species worldwide, divided into 430 genera. Larvae are herbivores and typically feed on the foliage of trees and shrubs, with occasional exceptions that are leaf miners, stem borers, or gall makers. The larvae of externally feeding species resemble small caterpillars. As with all hymenopterans, common sawflies undergo complete metamorphosis.
The family has no easily seen diagnostic features, though the combination of five to nine antennal flagellomeres plus a clear separation of the first abdominal tergum from the metapleuron can reliably separate them. These sawflies are often black or brown, and 3 to 20 mm long. Like other sawflies, they lack the slender "wasp-waist", or petiole, between the thorax and abdomen, characteristic of many hymenopterans. The mesosoma and the metasoma are instead broadly joined. The Tenthredinidae are also often somewhat dorsoventrally flattened, which will distinguish them at least from the slender cephids (which, together with the common sawflies, comprise many of the Nearctic species of Symphyta).
Females use their saw-like ovipositors to cut slits through barks of twigs, into which translucent eggs are wedged, which damages the trees. They are common in meadows, and in forest glades near rapid streams. Adults eat little, while larvae feed on foliage of streamside trees and shrubs, especially willow.
A number of species and genera have been described from the fossil record such as Eriocampa tulameenensis and Pseudosiobla campbelli of British Columbia.
Life cycle of Cladius difformis
Taxonomy
The Tenthredinidae are divided into seven subfamilies. Of the 430 genera, nine contain more than 50 species.
Subfamilies and genera
Subfamilies and genera within this family include:
Subfamily Allantinae
Adamas Malaise, 1945
Allantus Panzer, 1801
Ametastegia A. Costa, 1882
Apethymus Benson, 1939
Athalia Leach, 1817
Empria Lepeletier, 1828
Eriocampa Hartig, 1837
Monosoma MacGillivray, 1908
Monostegia O. Costa, 1859
Taxonus Hartig, 1837
Subfamily Blennocampinae
Ardis Konow, 1886
Blennocampa Hartig, 1837
Cladardis Benson, 1952
Claremontia Rohwer, 1909
Eutomostethus Enslin, 1914
Halidamia Benson, 1939
Hoplocampoides Enslin, 1913
Monardis Benson, 1952
Monophadnoides Ashmead, 1898
Monophadnus Hartig, 1837
Paracharactus MacGillivray, 1908
Periclista Konow, 1886
Phymatocera Dahlbom, 1835
Rhadinoceraea Konow, 1886
Stethomostus Benson, 1939
Tomostethus Konow, 1886
Subfamily Heterarthrinae
Caliroa O. Costa, 1859
Endelomyia Ashmead, 1898
Fenella Westwood, 1840
Fenusa Leach, 11817
Heterarthrus Stephens, 1835
Messa Leach, 1817
Metallus Forbes, 1885
Parna Benson, 1936
Profenusa MacGillivray, 1914
Rocalia Takeuchi, 1952
Scolioneura Konow, 1890
Subfamily Nematinae
Amauronematus Konow, 1890
Anoplonyx Marlatt, 1896
Cladius Illiger, 1807
Croesus Leach, 1817
Decanematus Malaise, 1931
Dineura Dahlbom, 1835
Eitelius Kontuniemi, 1966
Endophytus Hering, 1934
Eupontania Zinovjev, 1985
Euura Newman, 1837
Hemichroa Stephens, 1835
Hoplocampa Hartig, 1837
Mesoneura Hartig, 1837
Micronematus Konow, 1890
Nematinus Rohwer, 1911
Nematus Panzer, 1801
Pachynematus Konow, 1890
Pikonema Ross, 1937
Platycampus Schiødte, 1839
Pontania Costa, 1859
Pontopristia Malaise, 1921
Priophorus Dahlbom, 1835
Pristiphora Latreille, 1810
Pseudodineura Konow, 1885
Sharliphora Wong, 1969
Stauronematus Benson, 1953
Trichiocampus Hartig, 1837
Subfamily Selandriinae
Aneugmenus Hartig, 1837
Birka Malaise, 1944
Brachythops Haliday, 1839
Dolerus Jurine, 1807
Hemitaxonus Ashmead, 1898
Heptamelus Haliday, 1855
Loderus Konow, 1890
Nesoselandria Rohwer, 1910
Pseudoheptamelus Conde, 1932
Selandria Leach, 1817
Strombocerina Malaise, 1942
Strongylogaster Dahlbom, 1835
Subfamily Susaninae
Susana Rohwer & Middleton, 1932
Subfamily Tenthredininae
Aglaostigma Kirby, 1882
Eurogaster Zirngiebl, 1953
Ischyroceraea Kiaer, 1898
Macrophya Dahlbom, 1835
Pachyprotasis Hartig, 1837
Perineura Hartig, 1837
Rhogogaster Konow, 1884
Siobla Cameron, 1877
Tenthredo Linnaeus, 1758
Tenthredopsis A. Costa, 1859
Tyloceridius Malaise, 1945
Ussurinus Malaise, 1931
Phylogeny
Of these subfamilies, Tenthredininae and Allantinae are sister groups, and together form a sister group to the Nematinae.
References
Bibliography
, in
, in
, in Taeger, A. & Blank, S. M. (eds.), Pflanzenwespen Deutschlands (Hymenoptera, Symphyta) Kommentierte Bestandsaufname. Deutsches Entomologisches Institut, Goecke& Evers, Keltern.
External links
Hymis de Image gallery
Sawfly families
Insect pests of temperate forests
Taxa named by Pierre André Latreille