PROC. ENTOMOL. SOC. WASH. 101(2), 1999, pp. 359-371 TYPES AND BIOLOGICAL NOTES OF THE EASTERN NORTH AMERICAN SAWFLIES OF PONTANIA COSTA AND PHYLLOCOLPA BENSON (HYMENOPTERA: TENTHREDINIDAE) DESCRIBED BY MARLATT, DYAR, AND ROHWER Alexey G. Zinovjev and David R. Smith (AGZ) Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Russia (e-mail:
[email protected]); (DRS) Systematic Entomology Laboratory, PSI, Agricultural Research Service, U.S. Department of Agriculture, 7c National Museum of Natural History, MRC-168, Washington, DC 20560-0168, U.S.A. (e-mail:
[email protected]) Abstract. — The taxonomic placement of 18 sawfly species assigned to Pontania and Phyllocolpa or described under Pontania from eastern North America by Marlatt, Dyar, and Rohwer are discussed. The authorship of Pteromis carpini, Pontania consors, and P. borealis attributed to Marlatt is changed to Dyar. The following eight species from eastern North America belong to Pontania (Eupontania): P. (E.) s-desmodioides (Walsh) (= Pon-tania borealis Dyar 1898, n. syn.); P-(E.) s-pisum (Walsh); P. (E.) s-pomum (Walsh); P.(E.) gracilis Marlatt; P. (E.) rugidosa Marlatt; P. (E.) petiolaridis Rohwer; P. (E.) consors Dyar; and P. (E.) lucidae Rohwer. Three species are included in the leaf-rolling crassispina group of the subgenus Pontania: P. (P.) pumila Rohwer; P. (P.) populi Mar-latt; and P. (P.) terminalis Marlatt. Five species are included in the genus Phyllocolpa: P. nigrita (Marlatt); P. pectoralis (Marlatt); P. robiista (Marlatt); P. leavitti (Rohwer); and P. crassicornis (Rohwer), n. comb. Pontania acuminata Marlatt is transferred to Nematus, n. comb. Lectotypes are designated for seven species. The Salix and Populus host plants are given and associated galls are illustrated. Key Words: Pontania, Phyllocolpa, sawflies, leaf galls, leaf folds, Marlatt, Dyar, Rohwer The Nearctic gall-making and leaf-fold-the taxa described from the Nearctic Region ing sawflies have received little attention need to be reevaluated, and associated galls and have not been revised due to few ap-and host information recorded where parent morphological characters in the known. adults and lack of information on associated In this paper, we discuss the species of galls, habits, and other biological data. Pontania and Phyllocolpa described by Smith (1979) listed the gall-forming species Marlatt, Rohwer, and Dyar from eastern of Nematinae in the genera Euiira, Pontan-North America. The authorship of three ia, and Phyllocolpa, following the classifi-species are correctly attributed to Dyar rath-cation in place at that time. Subsequent er than Marlatt. The species described by work on the Palearctic fauna by Vikberg these authors are significant because many (1982) and Zinovjev (1993), has refined the have associated galls, host, and biological classification, most notably by the recog-information. These authors are also respon-nition of various subgenera and species sible for all of the species of Phyllocolpa groups within each genus. Consequently, and half of the species of Pontania known
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