Superfamily TENTHREDINOIDEA 39 



Family TENTHREDINIDAE 



This is the largest sawfly family with over 5,000 world species. Representatives of the 

 Tenthredinidae are found in all regions of the world, but it is a dominant family only in the 

 Northern Hemisphere where their predominance increases northwards. Most members of this 

 family are cylindrical, waspHke insects ranging in size from 2.5 mm. to about 15 mm. in length. 

 Most have nine-segmented antennae though some have fewer and some more. Habits and host 

 plants are diverse. Most larvae feed externally on the foliage of the host plant, but some are 

 leafminers, gallformers, or shootborers. Most larvae are caterpillarlike. 



The division of the family into subfamilies has always been controversial, and there are nearly 

 as many different arrangements as authors. There are current differences between North 

 American and European workers. Eight subfamilies are utilized in this catalog, most of the units 

 being the same as those previously recognized in the North American literature. Most are readi- 

 ly separated on the basis of wing venational differences. 



For general references to this family, see those listed under Suborder Symphyta. 



Subfamily SELANDRIINAE 



Members of this subfamily are associated with ferns, grasses, and sedges. The Selandriinae 

 are poorly represented in the northern regions of the world, but it is one of the dominant groups 

 in the tropics; for example, nearly 200 species have been described from the Americas south of 

 the United States. 



Revision: Smith, 1969. U. S. Dept. Agr. Tech. Bui. 1398, 48 pp. (Nearctic species). 



Taxonomy: Malaise, 1963. Ent. Tidskr. 84: 159-215 (key to world genera). 



Tribe STRONGYLOGASTRINI 



Genus ERIOCAMPIDEA Ashmead 



Eriocampidea Ashmead, 1898. Canad. Ent. 30: 256. 



Type-species: Eriocampidea arizonensis Ashmead. Orig. desig. 

 Cockerellonis MacGillivray, 1908. Canad. Ent. 40: 365. 



Type-species: Cockerellonis occidentalis MacGillivray. Orig. desig. 



A small genus found from southwestern United States into Mexico. 



arizonensis Ashmead. N. Mex., Ariz.; Mexico. 



Eriocampidea arizonensis Ashmead, 1898. Canad. Ent. 30: 256. 9. 

 Cockerellonis occidentalis MacGillivray, 1908. Canad. Ent. 40: 365. 9 (?). 



Genus HEMITAXONUS Ashmead 



Hemitaxonus Ashmead, 1898. Canad. Ent. 30: 311. 



Type-species: Taxonus dubitatus Norton. Orig. desig. 

 Epitaxonus MacGillivray, 1908. Canad. Ent. 40: 365. 



Type-species: Taxonus albidopictits Norton. Orig. desig. 

 Saklbergia Forsius, 1910. Meddel. Soc. Fauna et Flora Fenn. 36: 49. 



Type-species: Saklbergia struthiopteridis Forsius. Monotypic. 



Larvae of this holarctic genus feed on ferns. Mature larvae may bore into soft wood or other 

 substances where they pupate or overwinter. 



Revision: Smith, 1966. Ent. Soc. Wash., Proc. 68: 113-120. 

 albidopictus (Norton). N. S., N. B., Que. to Ala. w. to Minn., Iowa, Kans. Host: Onoclea 

 sensibilis. 

 Taxonus albido-pictus Norton, 1868. Amer. Ent. Soc, Trans. 2: 213. 9, c?. 

 Taxonus amicus Norton, 1868. Amer. Ent. Soc, Trans. 2: 213. 9,6. 

 Hemitaxonus rnfopectus Rohwer, 1910. U. S. Natl. Mus., Proc. 41: 204. 9. 

 dubitatus (Norton). N. S., N. B., Que. to N. C. w. to Minn., Ill, Tex. Host: Onoclea sensibilis. 

 Taxonus dubitatus Norton, 1862. Boston Soc. Nat. Hist, Proc. 9: 119. 9, cJ. 



