Euura proxima

Euura gracilis

Pontania proxima

Pontania daedala, n. syn.

Type locality. — Ithaca, New York. 

Valid name. — Pontania proxima (Serville 1823) (= P. daedala MacGillivray), n. syn. 

Notes. — The remnants of host-plant leaves in the vial (M-92) de- posited in the USNM cannot be identified to species, but the sawfly is undoubtedly P. proxima. 

Eupontania gracilis

Pontania demissa, n. syn.

Type locality. — Ithaca, New York. 

Valid name. — Eupontania gracilis (Mar- latt 1896) (= Pontania demissa Mac- Gillivray), n. syn. 

Notes. — Larvae and galls were described by Yuasa (1922) as P. demissa MacGillivray 1921 (Y- 191- 1-1). We have not seen larval material with this number. Pontania demissa could be treated either as synonym of Eupontania gracilis (Marlatt 1896) or E. petiolaridis (Rohwer 1917). Both these species are associated with different willow species: Salix sericea Marsh., and Salix petiolaris Smith, respectively. These sawflies are very similar, and they might prove to be conspecific. Both willow species occur in the vicinity of Ithaca, and, at least in herbarium material studied by AGZ, the galls are known also from both host plants. However, Salix sericea seem to be more common there and galls only on this willow were found in the fall of 1997 around Ithaca by AGZ and T Carr. The type of Pontania demissa fits best the type material of E. gracilis, and we consider them as synonymous.

Types of sawflies described in the genus Pontania A. Costa (Hymenoptera: Tenthredinidae) in the Illinois Natural History Survey