Insecta , Ephemeroptera : New and additional records from New York ( U . S . A . )

Jacobus and McCafferty (2001b) listed 173 species of mayflies from New York, including 42 new state species records, of which 170 were considered valid taxa. Herein, we augment that list with nine new state species records (indicated by an asterisk, "*") and new collection data for species seldomly reported from the state. We also note recent changes to the taxonomy of New York Ephemeroptera and note other necessary emendations to the list of species records.

Bloomington, Indiana 47405.Jacobus and McCafferty (2001b) listed 173 species of mayflies from New York, including 42 new state species records, of which 170 were considered valid taxa.Herein, we augment that list with nine new state species records (indicated by an asterisk, "*") and new collection data for species seldomly reported from the state.We also note recent changes to the taxonomy of New York Ephemeroptera and note other necessary emendations to the list of species records.
Taxa impacted by nomenclature changes since Jacobus and McCafferty's (2001b) list include all species formerly included in Stenonema Traver, excluding S. femoratum (Say), that are now part of the genus Maccaffertium Bednarik (Heptageniidae); Heterocloeon amplum (Traver), formerly included in Acentrella Bengtsson (Baetidae); and Sparbarus lacustris (Needham) and Sparbarus maculatus (Berner), formerly included Brachycercus Curtis (Caenidae) (Wang and McCafferty 2004, McCafferty et al. 2005, Sun and McCafferty 2008).Revisions to species in the genus Ephemerella Walsh (Jacobus and McCafferty 2003) reduced the total number of species known from the state, due to a broader concept of Ephemerella invaria (Walker) [= E. rotunda Morgan] and the acknowledgment of historical misidentifications of Ephemerella excrucians Walsh by J. G. Needham, which were based on "something entirely different and probably contains a mixture of species" (McDunnough 1931b).The Jacobus and McCafferty (2001b) New York record of Epeorus frisoni (Burks) is tentatively referable to E. pleuralis (Banks) (Burian et al. 2008).This New York specimen differs from typical northeastern E. pleuralis, in that the posterior margin of the subgenital plate is distinctly indented.Epeorus pleuralis is known to show morphological variability, but the population that was misidentified as E. frisoni may require further investigation (S.Burian, pers. comm.).Heptagenia marginalis Banks was reported as a new state record by Jacobus and McCafferty (2001b), but in fact Traver (1935) reported it previously.
Thus, the number of presumably correctly identified and valid nominal species reported from New York before this study was 167.We note that reports of Centroptilum triangulifer (McDunnough) should be considered tentative as they might represent that species, C. alamance (Traver), or both species (Funk et al. 2006).The synonymy of Ephemerella invaria and E. rotunda is somewhat contentious (e.g., Chandler et al. 2006), as is the taxonomy of the Drunella lata complex (Jacobus and McCafferty 2004), which includes the species Drunella lata (Morgan), D. cornuta (Morgan), D. cornutella (McDunnough) and D. longicornis (Traver) (Funk et al. unpublished).Remarks: This Holarctic species is distributed throughout eastern North America, but it has not been recorded south of 40° N latitude (Burian and Gibbs 1991).In the spring months this species was collected commonly from overflow areas and beaver ponds with little or no flow, and abundant coarse organic material.Mature larvae were collected until the end of June.Baetidae *Acentrella barbarae Jacobus and McCafferty.New Reports: Essex Co., W. B. Ausable River, Rt. 86 notch nr.Wilmington (44°20'27" N, 73°53'24" W), 28 July 2007, LWM, 1 larva (dissected parts in microvial) (CSUC).Remarks: This record extends the known range of geographic distribution northwards from Tennessee and North Carolina, representing the first report of the species since its original description from Great Smoky Mountains National Park (Jacobus and McCafferty 2006).
New Report: Clinton Co., Great Chazy River, Rt. 374 at Chazy Lake (44°46'17" N, 73°48'25" W), 28 May 2008, 2 larvae, LWM and R. Mowrey (CSUC).Remarks: Previously reported distributional records for E. lutulenta extend from New Brunswick west to Wisconsin and south to Arkansas, Tennessee and North Carolina (Funk and Sweeney 1994).Although previously reported from New York by Traver (1935) Remarks: These records fall within the known geographic range of E. prudentalis, which Chandler et al. (2006) considered to be an Appalachian and Midwestern species.The northern extent of its range includes Quebec and Minnesota, and the southern extent includes Kentucky and South Carolina (Funk andSweeney 1994, Randolph andMcCafferty 1998).Larvae of this species were collected commonly during spring and early summer from overflow areas and calm reaches of streams and rivers.
Maccaffertium meririvulanum (Carle & Lewis) Previous Reports: Cattaraugus Co., Greene Co., Jacobus and McCafferty (2001b) (Carle and Lewis 1978, Bednarik and McCafferty 1979, Kondratieff and Harris 1986, Randolph and McCafferty 1998).During this study adults and mature larvae were collected in May and June from spring-fed first order streams.
, records from this survey provide confirmation of the continued occurrence of this species in the state.