100 MISCELLANEOUS FOREST INSECTS. 



GYMNONYCHTJS Marlatt=DIPHADNTJS Hartig. 



In 1837 Hartig (Fam. Blatt. Holzwesp., p. 225) formed a new sub- 

 genus {Di'phadnus) of Nematus for a species he called fuscicomis- 

 Later European writers have proved that Nematus {Di'phadnus) 

 fuscicomis Hartig is an aberrant form of his Nematus appendiculatus, 

 which for some time was placed in the genus PristipJiora. 



Mr. C. L. Marlatt,*^ in his Revision of the Nematinse of North 

 America, described a new genus, GymnonycJius , for certain species 

 near PristipTiora, which have simple tarsal claws . Nematus appendicu- 

 latus Hartig belongs to this genus, but in 1837 a generic name was 

 given to an aberrant form of this species, so Mr. Marlatt's name must 

 fall as a synonym of DipJiadnus Hartig. 



Diphadnus Hartig, 1837. 



Gymnonychus Marlatt, 1896. 



CALIROA O. Costa AND ERIOCAMPOIDES Konow. 



In 1859 (Fauna Napoli, Tenthred., p. 59) O. Costa described the 

 genus Caliroa and included one species, C. sehetia O. Costa, which is 

 therefore the genotype. Later it was proved that Caliroa sehetia is 

 the same as Tenthredo (AUantus) cinxia Klug. 



Rev. F. W. Konow in 1890 (Deutsch. ent. Zeitschr., 1890, p. 239) 

 described his genus Eriocampoides and in his list of species, page 248, 

 considers sehetia O. Costa as a synonym of cinxia Klug, but makes no 

 mention of the genus Caliroa. 



Dr. William H. Ashmead in 1898 (Can. Ent., p. 256) divided 

 Konow's genus Eriocampoides into two genera, naming Monostegia 

 rosse Harris as the type of his new genus Endelomyia. 



The group of species placed in the genus Eriocampoides by Konow 

 can well be separated into two distinct sections, one of which, Konow 

 to the contrary notwithstanding (for he says Caliroa was founded on a 

 male and not sufficiently characterized, Genera Insectorum, Fasc. 29, 

 p. 75, 1906), must be called Caliroa. The type of Eriocampoides being 

 the common pear slug limacina, that subgenus will contain those 

 species which have the clypeus emarginate, the pedicel subequal in 

 length with the scape, and the hind wings with usually two closed 

 discal cells in the female. The type of Endelomyia Ashmead is 

 Monostegia rosse Harris, which is the same as the European rose slug 

 setJiiops Fabricius. The subgenus Endelomyia is characterized as 

 having the clypeus truncate, the pedicel shorter than the scape (much 

 wider than long), and the hind wings with usually only one discal cell 

 in the female. Endelomyia is, however, a synonym of Caliroa, their 

 genotypes being strictly congeneric. 



aJJ. S. Dept. Agr., Div. Ent., Tech. ser. 3, 1896. 



