Plagiognathus fuscosus (Provancher)

SCHUH, RANDALL T., 2001, Revision Of New World Plagiognathus Fieber, With Comments On The Palearctic Fauna And The Description Of A New Genus (Heteroptera: Miridae: Phylinae), Bulletin of the American Museum of Natural History 2001 (266), pp. 1-267 : 88-91

Plagiognathus fuscosus (Provancher) Figures 4 , 8 , 16 , 25

Lygus fuscosus Provancher, 1872: 105 (n. sp.).

Plagiognathus fuscosus Provancher, 1887: 153 (n. comb.).

Plagiognathus politus pallidicornis Knight, 1923: 435 (n. var.; syn. by Kelton, 1968: 1075).

Plagiognathus albonotatus Knight, 1923: 437 (n. sp.). NEW SYNONYMY.

Plagiognathus albonotatus compar Knight, 1923: 438 (n. var.).

DIAGNOSIS: Recognized by antennal segment 2 being mostly pale with the basal one­

fourth dark (fig. 16), the dorsal vestiture composed of reclining, dark, common setae intermixed with silvery, shining, weakly woolly setae (fig. 4D), and the trochanters pale. Coloration variable, with two more or less discrete forms, one with dorsum entirely dark (fig. 8: fuscosus 2), the second with the base of the corium and part or all of the cuneus pale, with the pronotal disc and part of the scutellum also pale (fig. 8: fuscosus 1). Dark form very similar to flavicornis in size, coloration, and body conformation; separated by flavicornis having antennal segment 2 longer relative to width of head and more narrowly black at base (fig. 16) than in fuscosus and with the vestiture composed of only simple, mostly dark, setae. Specimens with pale areas on hemelytra most similar in general appearance to brunneus , obscurus , and subovatus , but readily distinguished by antennal segment 2 being entirely black in all of them, and brunneus and obscurus being consistently larger. Potentially confused with P. albatus on coloration of dorsum, but vestiture distinct, albatus with only simple setae; furthermore, albatus always more elongate in both sexes, and hind femur usually largely pale whereas femora castaneous on distal one­half in fuscosus .

REDESCRIPTION: Male: Elongate­ovoid, of moderate size; total length 3.22–3.60, length apex clypeus–cuneal fracture 2.29 –2.49, width across pronotum 0.99–1.11. COLOR­ ATION (fig. 8): Dorsum entirely castaneous, or base of corium and part or all of cuneus pale, with disc of pronotum and scutellum laterally also sometimes pale; membrane fumose, veins pale; antennal segment 1 castaneous except for pale apical annulus, segment 2 black on basal one­fourth, remainder of segment pale (fig. 16), segments 3 and 4 pale; labium mostly castaneous; venter entirely castaneous; metathoracic scent­gland evaporatory area varying from partially to almost totally pale; coxae dark at least basally, often pale distally, trochanters usually pale, femora entirely castaneous in dark­colored specimens, at least hind femur broadly dark on distal one­half in all specimens; tibiae pale, articulation with femora dark, dorsal spines with dark bases. SURFACE AND VESTITURE: Dorsum weakly granular, smooth, weakly shining. Vestiture of dorsum, thoracic pleuron, and abdominal venter laterally composed of recumbent, dark, simple setae intermixed with silvery, shining, recumbent, weakly woolly setae (fig. 4D). STRUCTURE: Body varying from more or less parallel­sided, with weakly convex corial margins, to much more broadly ovate; frons very weakly tumid, clypeus visible from above; anteocular distance 2 times diameter of antennal segment 1; head project­ ing below eye by 1.5 times diameter of antennal segment 1 (fig. 4A); labium reaching to about apex of middle coxae or slightly beyond; metathoracic scent­gland evaporatory area and spiracle as in figure 4C; pretarsus as in figure 4E; abdomen in lateral view as in figure 4B. GENITALIA (fig. 25): Body of vesica relatively stout and strongly curving, more or less U­shaped, base of vesica not quite reaching to level of secondary gonopore; posterior apical spine elongate, nearly straight, weakly angled relative to body of vesica, anterior spine more strongly angled relative to body of vesica, attenuated, and in lateral view only weakly and gradually angled near apex; flange on vesica moderately broad, reaching to about midpoint of gonopore.

Female: Very similar to male in coloration; body usually more strongly ovoid. Total length 3.24–3.57, length apex clypeus–cuneal fracture 2.30–2.52, width across pronotum 1.08–1.17.

HOSTS: Most frequently found on Rosaceae (primarily Spiraea spp. ) and Salicaceae ( Salix spp. ). May breed on other plant groups, but many other recorded occurrences probably represent only sitting records.

DISTRIBUTION: Widely distributed in eastern North America from southern Canada to the Gulf and from the Atlantic coast to Alberta and Colorado. Also known from a limited number of localities in Washington, Idaho, Oregon, and northern California.

DISCUSSION: My concept of fuscosus follows that of Kelton (1968) and his examination of Provancher type material; in the case of ‘‘typical’’ fuscosus specimens, I have treated his determinations as authoritative. Kelton (1968) synonymized Knight’s variety politus pallidicornis with fuscosus Provanch­ er, a decision with which I concur. Until now, additional synonymy appears to have been overlooked. Knight (1923) described a taxon widely distributed in the eastern United States under the name albonotatus . He recorded specimens from Spiraea salicifolia . The taxon was recorded by Kelton (1980) from many localities in the Canadian prairie provinces on Spiraea alba and Salix spp. Comparison of Kelton’s albonotatus material with specimens he identified as fuscosus , indicates that many localities and dates of col­ lection are duplicated for the two species. Furthermore, in addition to the similar coloration of antennal segment 2, the vestiture of the dorsum is composed of two types of setae in both nominal taxa and the genitalia are indistinguishable. Kelton (1980) recorded fuscosus from Salix interior , Lathyrus venosus , Spiraea alba , Potentilla fruticosa , and Symphoricarpos occidentalis . Kelton’s labeling indicates that at least in some cases representatives of both ‘‘species’’ were collected on the same hosts at the same localities on the same days. Although it is possible that two species could coexist under such circumstances, because all aspects of morphology— except pigementation of the dorsum—are in agreement, I am treating albonotatus as a junior synonym of fuscosus .

SPECIMENS EXAMINED: CANADA.— Alberta: Castor , August 7, 1957, A. and J. Brooks, 1♀ (CNC). Elkwater Park, July 13, 1952, A. R. Brooks, Salix sp. (Salicaceae) , 23 (CNC). Grande Prairie, August 26, 1961, A. R. Brooks, 33, 2♀ (CNC). Lethbridge, July 29, 1930, J. H. Pepper, 2♀ (CNC). Manyberries, July 25, 1952, L. A. Konotopetz, 13 (CNC). Peace River, July 10, 1962, A. R. Brooks, 33, 2♀ (CNC). Rycroft, August 7, 1961, A. R. Brooks, 13, 1♀ (CNC). Stettler, August 3, 1957, A. and J. Brooks, 1♀ (CNC). Wainwright, July 27, 1957, A. and J. Brooks, 23, 4♀ (CNC). British Columbia : 7 mi S of Nelson, August 6, 1969, P. Oman, 23 (OSU). Agassiz, August 15, 1927, H. H. Ross, 33 (CNC). Courtenay, Vancouver Island, 0–50 m, July 1, 1978, N. L. H. Krauss, 13 (AMNH). Duncan, July 28, 1929, W. Downes, 13 (USNM). Glenemma, Salmon River, July 15, 1949, H. B. Leech, 23 (CAS). Meyer Flats, Oliver, June 29, 1959, L. A. Kelton, 93, 1♀ (CNC). Mission City, July 10, 1953, G. J. Spencer, 1♀ (CNC). Morris , August 3, 1931, R. H. Beamer, 13, 1♀ (KU). Parksville, August 17, 1970, L. A. Kelton, 13 (CNC). Peat Bog at Pitt Meadows, July 9, 1953, G. J. Spencer, 93, 7♀ (CNC). Quesnel, July 21, 1947, J. C. Spencer, 13 (CNC). Royal Oak, July 16, 1959, L. A. Kelton, 2♀ (CNC). Terrace, July 27, 1960, W. R. Richards, 13, 7♀ (CNC). Victoria , August 6, 1929, W. Downes, 13 (USNM). Manitoba: 10 mi W of Roblin, August 2, 1954, Brooks and Wallis, Poten­ tilla sp. ( Rosaceae ), 33, 8♀ (CNC). 2 mi E of Douglas, July 27, 1958, J. G. Chillcott, 1♀ (CNC). 5 mi SW of Shilo, August 2, 1958, J. G. Chillcott, 53, 2♀ (CNC). 8.4 km W of Russell on Rt 16, July 18, 1990, M. D. Schwartz and R. Foottit, 13 (CNC). Assiniboine River Valley at crossing of Rt 16, July 18, 1990, M. D. Schwartz, 1♀ (CNC). Assinibone River Valley at Rt 16, July 18, 1990, M. D. Schwartz, 23, 2♀ (CNC). Boissevain, July 20, 1953, Brooks and Kelton, 63, 2♀ (CNC). Carberry, July 29, 1953 – August 12, 1953, Brooks and Kelton, Spiraea sp. (Rosaceae) , 93, 28♀ (CNC). Melita, July 25, 1958, A. and J. Brooks, 13 (CNC). Millwood, July 19, 1954, Brooks and Wallis, 83, 7♀ (CNC). Riding Mt. Natl. Park, July 21, 1972, L. A. Kelton, 13 (CNC). Russell, July 21, 1954, Brooks and Wallis, 13, 2♀ (CNC). Sandilands Provincial Forest, just off hiway, July 19, 1990, M. D. Schwartz, Vicia sp. (Fabaceae) , 13, 4♀ (CNC). Sourris, July 27, 1953, A. R. Brooks, 163, 2♀ (CNC). St. Lazare, August 19, 1954, Brooks and Wallis, 13 (CNC). Turtle Mt., July 21, 1953, Brooks and Kelton, 13 (CNC). Virden, July 14, 1953, Brooks and Kelton, 33 (CNC). Winnipeg, August 9, 1958, A. and J. Brooks, 1♀ (CNC). New Brunswick: Grand Lake, August 19, 1959, J. A. Slater, 2♀ (AMNH). Kouchibouguac Natl. Park, July 20, 1977 – August 8, 1977, D. J. Brown, Spiraea sp. (Rosaceae) , 223, 21♀ (CNC). St. Andrews, August 9, 1957, G. E. Shewell, 33, 2♀ (CNC). Nova Scotia: Bible Hill, July 12, 1966, L. A. Kelton, Rubus sp. (Rosaceae) , 203, 1♀ (CNC). Halifax, July 22, 1976, L. A. Kelton, Pinus sylvestris (Pinaceae) , 33 (CNC). Ingonish, July 30, 1976, L. A. Kelton, Salix sp. (Salicaceae) , 123, 6♀ (CNC). Kentville, July 15, 1966, L. A. Kelton, Spiraea sp. (Rosaceae) , 13 (CNC). Kentville, July 26, 1924, B. P. Gorham, Spiraea sp. (Rosaceae) , 43, 1♀ (CNC). Lockport, August 2, 1958, J. R. Vockeroth, 1♀ (CNC). Mt. Uniacke, July 13, 1966, L. A. Kelton, 183, 1♀ (CNC). N. E. Mangree CBI, July 23, 1966, L. A. Kelton, Salix sp. (Salicaceae) , 1♀ (CNC). Woodville, July 20, 1966, L. A. Kelton, Larix sp. (Pinaceae) , 33 (CNC). Ontario: 14 mi E of Kenora, August 9, 1960, Kelton and Whitney, 1♀ (CNC). Albury, June 27, 1962, G. Thorpe, 13 (CNC). Alfred, June 19, 1979, D. Brown, 13, 8♀ (CNC). Algongin Prov. Park, July 19, 1991, J. R. Vockeroth, 2♀ (CNC). Aylmer, July 3, 1962, H. Blanchard, 53 (CNC). Belleville, July 24, 1964, C. C. Loan, Spiraea latifolia (Rosaceae) , 13, 3♀ (CNC). Black Hawk, August 3, 1960, Kelton and Whitney, 33, 4♀ (CNC). Burtch, July 11, 1961 – July 9, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 53 (CNC). Chalk River, July 20, 1961, G. Brumpton, 1♀ (CNC). Consecon, June 27, 1962, H. Blanchard, 13 (CNC). Constance Bay, Pine Forest, July 18, 1991, M. D. Schwartz, 1♀ (CNC). Corkery, July 4, 1962, D. Brown, Alnus sp. (Betulaceae) , 3♀ (CNC). Dashwood, July 12, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 63, 8♀ (CNC). Dryden, August 12, 1960, Kelton and Whitney, 23 (CNC). Dundas, July 16, 1962, Kelton and Thorpe, 1♀ (CNC). Dunnville, July 9, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 93, 12♀ (CNC). Edwards, Patterson’s Farm, June 23, 1991, M. D. Schwartz, 13 (CNC). Elmvale, June 13, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 43, 1♀ (CNC). Erin, September 5, 1961, L. A. Kelton, Salix sp. (Salicaceae) , 1♀ (CNC). Exeter, July 12, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 23, 1♀ (CNC). Footes Bay, July 25, 1962, Kelton and Thorpe, Spiraea sp. (Rosaceae) , 2♀ (CNC). Foxboro, July 24, 1973, D. G. Reid, Solidago sp. (Asteraceae) , 1♀ (CNC). Frederick, July 2, 1962, H. Blanchard, 2♀ (CNC). Grand Bend, July 11, 1962, Kelton and Thorpe, 1♀ (CNC). Guelph, June 19, 1961, G. Brumpton, 1♀ (CNC). Hamilton, July 6, 1955, L. A. Kelton, 1♀ (CNC). Hepworth, June 30, 1962, G. Thorpe, 53 (CNC). Innes Point, 10 km NW of Ottawa, June 28, 1991, M. D. Schwartz, Potentilla sp. (Rosaceae) , 13, 3♀ (CNC). Innes Point, 10 km NW of Ottawa, Ottawa River, June 28, 1991, M. D. Schwartz, Potentilla sp. (Rosaceae) , 93 (CNC). Lake of Bays, Norway Point, July 15, 1922, J. McDunnough, 63, 4♀ (CNC). Marmora, July 5, 1952, J. R. Vockeroth, Spiraea sp. (Rosaceae) , 93 (CNC). Marmora, July 7, 1952, C. Boyle, et al., Spiraea sp. (Rosaceae) , 33, 5♀ (CNC). Merivale, August 22, 1932, G. S. Walley, 23 (CNC). Middleville, August 7, 1980, D. J. E. Brown, 13 (CNC). Moose Hill, August 16, 1960, Kelton and Whitney, Salix sp. (Salicaceae) , 13, 2♀ (CNC). Mt. Pleasant, July 10, 1958 – July 29, 1961, L. A. Kelton, Salix sp. (Salicaceae) , 83, 3♀ (CNC). Nepean, Piney Forest, June 28, 1991, M. D. Schwartz, 23, 2♀ (CNC). Niagara Falls, July 7, 1955, L. A. Kelton, 1♀ (CNC). North Bay, July 14, 1961, G. Brumpton, 23 (CNC). Norwich, July 19, 1962, Kelton and Thorpe, Solidago sp. (Asteraceae) , 53, 1♀ (CNC). Oakland, July 17, 1962, Kelton and Thorpe, Potentilla milligrama (Rosaceae) , 3♀ (CNC). One Sided Lake, August 1, 1960, Kelton and Whitney, 33, 3♀ (CNC). Ottawa, July 15, 1957, J. E. H. Martin, 23, 1♀ (CNC). Parkhead, June 30, 1962, G. Thorpe, Thuja occidentalis (Cupressaceae) , 13 (CNC). Peterboro, July 16, 1962, C. Boyle, 1♀ (CNC). Pitopiko River picnic area on Rt 11 between Longiac and Hearst, July 21, 1990, M. D. Schwartz, 13 (CNC). Queenston, July 8, 1955, L. A. Kelton, 1♀ (CNC). Rockaway, June 21, 1962, Kelton and Thorpe, 13 (CNC). Rockaway, June 21, 1962, Kelton and Thorpe, 33 (CNC). Shawanaga, July 26, 1962, Kelton and Thorpe, Myrica sp. (Myricaceae) , 23 (CNC). Shawanoga, July 26, 1962, L. A. Kelton, 13 (CNC). Sioux Narrows, August 6, 1960, Kelton and Whitney, 1♀ (CNC). St. Lawrence Is. Natl. Park, Beaurivage Is., August 7, 1976, W. Reid, 23 (CNC). Stittsville, July 12, 1979, D. Brown, 43, 5♀ (CNC). Stittsville, July 26, 1961, G. Brumpton, Salix sp. (Salicaceae) , 53, 9♀ (CNC). Sturgeon Falls, July 27, 1962, Kelton and Thorpe, Alnus sp. (Betulaceae) , 93, 2♀ (CNC). Thessalon, August 14, 1965, W. Gagne, Salix sp. (Salicaceae) , 1♀ (CAS). Tillsonburg, June 20, 1962 – July 14, 1955, Kelton and Thorpe, Salix sp. (Salicaceae) , 193, 19♀ (CNC). Vermillion Bay, August 11, 1960, Kelton and Whitney, Salix sp. (Salicaceae) , 1♀ (CNC). Vienna, July 18, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 83 (CNC). Waterford, July 17, 1962, Kelton and Thorpe, 123, 1♀ (CNC). Woodstock, July 10, 1962, Kelton and Thorpe, Salix sp. (Salicaceae) , 483, 28♀ (CNC). Prince Edward Island: Cavendish National Park, July 9, 1966, L. A. Kelton, 113, 1♀ (CNC). Charlottetown, August 7, 1976, L. A. Kelton, Alnus sp. (Betulaceae) , 13 (CNC). Quebec: Aylmer, August 22, 1933, J. A. Adams, 1♀ (CNC). Beechgrove, June 29, 1962, G. Brumpton, 13 (CNC). Bolton Pass, August 3, 1929, L. J. Milne, 1♀ (CNC). Cap Chat, July 27, 1954, J. E. H. Martin, 2♀ (CNC). Cap Rouge, July 8, 1953, O. Peck, 13 (CNC). Carteris, July 24, 1958, C. H. Mann, 13 (CNC). Fabre, July 5, 1963, L. A. Kelton, 33, 1♀ (CNC). Gatineau National Park, Harrington, July 2, 1981, D. J. E. Brown, 13, 1♀ (CNC). Kazubazua, August 18, 1927, G. S. Walley, 13, 1♀ (CNC). Knowlton, July 22, 1929, Milne and Walley, 143, 14♀ (CNC). Lac Megantic, August 3, 1961, G. Brumpton, 13, 1♀ (CNC). Lac Mondor, Ste. Flore, August 3, 1951, E. G. Munroe, 1♀ (CNC). Laniel, July 6, 1963 – July 25, 1963, L. A. Kelton, W. Gagne, 123, 3♀ (CNC). Laniel, July 6, 1963, L. A. Kelton, 13 (CNC). Magog, August 2, 1961, G. Brumpton, 4♀ (CNC). Montreal, August 15, 1905, Beaulieu, 1♀ (CNC). Montreal, August 19, 1956, Slater and Davis, 13 (AMNH). Otter Lake, August 6, 1931, G. S. Walley, 13, 4♀ (CNC). Perth, July 11, 1980, L. A. Kelton, 1♀ (CNC). Quyon, July 22, 1958, L. A. Kelton, Salix sp. (Salicaceae) , 43, 1♀ (CNC). Roberval, July 28, 1911, G. Beaulieu, 1♀ (CNC). S.­Eust’e, July 22, 1918, J. Ouellet, 1♀ (TAMU). Shawville, August 6, 1958, L. A. Kelton, 43 (CNC). St. Agathe, August 9, 1961, G. Brumpton, 2♀ (CNC). St. Jean, August 8, 1961, G. Brumpton, 13 (CNC). Sutton, August 5, 1961, G. Brumpton, 2♀ (CNC). Thurso, August 20, 1958, L. A. Kelton, 13, 3♀ (CNC). Trinity Bay, August 18, 1929, W. J. Brown, 33, 6♀ (CNC). Trinity Bay, August 20, 1929, W. J. Brown, 1♀ (UCB). Missisquoi Co.: Mt. Pinacle, 8 km E of Freilighsburg, 400–500 m, June 21, 1991, M. Sharkey, 13 (CNC). Saskatchewan: 186 km N of Regina on Rt 11, 3.3 km E of Rt 11, July 10, 1990, M. D. Schwartz, Rosa sp. (Rosaceae) , 13 (CNC). 45.8 km N of Stoughton on Rt 47, July 8, 1990, M. D. Schwartz, Rosa sp. (Rosaceae) , 13 (CNC). Amsterdam, August 22, 1954, Brooks and Wallis, 33, 4♀ (CNC). Broadview, August 13, 1954, Brooks and Wallis, 1♀ (CNC). Dunedin, June 18, 1951, A. R. Brooks, 13, 3♀ (CNC). Elbow, August 1, 1951, A. R. Brooks, Spiraea sp. (Rosaceae) , 53, 7♀ (CNC). Esterhazy, July 26, 1954, Brooks and Wallis, 63, 2♀ (CNC). Fort Walsh Natl. Hist. Park, September 3, 1993, M. D. Schwartz, Artemisia frigida (Asteraceae) , 1♀ (CNC). Hudson Bay, August 25, 1954, Brooks and Wallis, 13 (CNC). Hudson Bay, August 26, 1954, Brooks and Wallis, 53, 2♀ (CNC). Kandahar, July 29, 1954, Brooks and Wallis, 113, 6♀ (CNC). Lumsden, August 7, 1954, Brooks and Wallis, 43, 3♀ (CNC). Nipewin, August 15, 1950, L. A. Konotopetz, Medicago sativa (Fabaceae) , 1♀ (CNC). Rockglen, August 3, 1955, C. D. Miller, 13, 3♀ (CNC). Rutland, July 29, 1940, A. R. Brooks, 1♀ (CNC). Saskatoon, July 9, 1957 – July 25, 1950, A. R. Brooks, 53, 12♀ (CNC). Struon, July 19, 1951, L. A. Konotopetz, 13 (CNC). Torch River, August 14, 1950, L. A. Konotopetz, Lathyrus venosus (Fabaceae) , 23, 12♀ (CNC). Torquay, August 11, 1955, A. R. Brooks, 1♀ (CNC). Val Marie, August 8, 1955, A. R. Brooks, 33, 2♀ (CNC). Willow Bunch, July 30, 1955, C. D. Miller, 163, 24♀ (CNC). Wood Mountain, August 5, 1955, A. R. Brooks, 43, 7♀ (CNC). USA.— Alabama: Blount Co.: 1 mi SW of Blount Springs, just S of Hwy 31, May 20, 1986, C. B. Barr, 1♀ (LSU). California: Mendocino Co. : 4 mi W of Eel River Ranger Station, Mendocino National Forest, June 10, 1972, J. Doyen, Alnus sp. (Betulaceae) , 1♀ (UCB). Siskiyou Co.: 1 mi NW of Bartle, July 20, 1966, P. A. Opler, 1♀ (UCB). Colorado: Boulder Co.: S of St. Vrain Can., August 16, 1973, G. F. Knowlton and W. Hanson, 13 (USU). Douglas Co.: Waterton, August 8, 1987, T. J. Henry, 13 (USNM). Waterton, July 2, 1981 – August 17, 1982, D. A. and J. T. Polhemus, Salix interior (Salicaceae) , 53, 5♀ (JTP). Jefferson Co.: Waterton, Platte River, 5500 ft, July 11, 1986, R. T. Schuh and J. T. Polhemus, Salix interior (Salicaceae) , 83, 12♀ (AMNH). Ouray Co.: 2 mi W of Ridgway, July 22, 1967, H. R. Burke, 13 (TAMU). Weld Co.: 1 mi N of Masters along S Platte River, August 9, 1987, J. T. and D. A. Polhemus, Salix interior (Salicaceae) , 1♀ (JTP). Connecticut: 3 mi SE of Sandy Hook, September 17, 1966, C. W. O’Brien, 1♀ (UCB). 4.5 mi N of Salisbury, Mt. Riga State Park, July 25, 1970, J. Slater and J. Harrington, 13 (AMNH). East Hartford, Tunxis State Forest, July 20, 1970, F. P. Maroney, 13 (AMNH). Mansfield Center, July 28, 1962, 1♀ (AMNH). New Canaan, July 8, 1951, M. Statham, 1♀ (AMNH). Norfold, Haystack Mt. State Park, July 25, 1970, J. Slater and J. Harrington, 1♀ (AMNH). North Norfolk, Campbell Falls State Park, August 6, 1970, F. P. Maroney, 1♀ (AMNH). S of Meriden, June 15, 1920, H. Johnson , 1♀ (CAS). Salisbury, Mt. Riga State Park, August 25, 1970, F. P. Maroney, 1♀ (AMNH). Storrs, July 29, 1954, F. B. Lewis, 1♀ (AMNH). Idaho: Idaho Co.: Lochsa River Valley, E of Wilderness Acc. Cmpd (milepost 127), 2400 ft, August 1, 1987, G. M. Stonedahl, Salix sp. (Salicaceae) , 1♀ (AMNH). milepost 123 E of Lovell, Wilderness Access Campground, 2200 ft, August 7, 1986, Schuh, Schwartz, Stonedahl, Salix sp. (Salicaceae) , 63, 8♀ (AMNH). Iowa: Clinton Co.: Clinton, June 23, 1928, G. S. Walley, 13 (CNC). Henry Co.: 6 mi SE of Mt. Pleasant, T71N R7W, June 16, 1962, J. C. Schaffner, 2♀ (TAMU). Louisiana: East Baton Rouge Co.: Baton Rouge, April 26, 1986, E. G. Riley, 13, 1♀ (DAR). Feliciana Co. : Tunica Hills W of Weyanoke, May 18, 1985, C. B. Barr, 2♀ (LSU). Maine: Hancock Co.: Mount Desert Island, July 30, 1922, Spiraea sp. (Rosaceae) , 1♀ (USNM). Southwest Harbor, C. W. Johnson , 13 (AMNH). Kennebec Co.: Monmouth, July 15, 1910, C. A. Frost, 1♀ (CAS). Lincoln Co.: Southport, August 4, 1901, 1♀ (AMNH). Penobscot Co.: Orono, July 5, 1911, 1♀ (CAS). Piscataquis Co.: Baxter State Park, July 18, 1986, C. B. Barr, 1♀ (LSU). Washington Co.: 8 km S of Milbridge, July 22, 1990, Steiner and Landvoight, 2♀ (USNM). Machias, July 26, 1909, C. W. Johnson , 23, 1♀ (CAS). Massachusetts: Berkshire Co.: Washington, August 8, 1912, 1♀ (CAS). Essex Co.: Pigeon Cove, July 28, 1916, C. E. Olsen, 3♀ (USNM). Middlesex Co.: Holliston, August 12, 1900, N. Banks, 1♀ (AMNH). Norfolk Co.: Wellesley, July 11, 1909, E. P. Van Duzee, 1♀ (CAS). Michigan: Cheboygan Co.: Douglas Lake, August 4, 1924, H. B. Hungerford, 1♀ (KU). No specific locality, June 21, 1938, H. B. Hungerford, 33, 6♀ (KU). Minnesota: Carlton Co.: Elkhorn Creek, August 18, 1920, H. H. Knight, 1♀ (USNM). Lac Qui Parle Co.: Madison, June 25, 1921, H. H. Knight, 1♀ (USNM). Lake Co.: Cramer, August 10, 1922, H. H. Knight, 23, 1♀ (USNM). Missouri: Barry Co.: Roaring Riv­ er State Park, June 15, 1954, J. W. Green, 1♀ (CAS). Maries Co.: Vichy, June 17, 1939, R. C. Froeschner, 1♀ (USNM). Montana: Granite Co.: 6 mi S of Drummond on Rt 10A, Hall, August 9, 1986, Schuh, Schwartz, Stonedahl, Rosa sp. (Rosaceae) , 5♀ (AMNH). Park Co.: No specific locality, 6000 ft, August 14, 1926, A. A. Nichol, 2♀ (USNM). Yellowstone Co.: No specific locality, July 16, 1920, A. A. Nichol, 1♀ (USNM). New Hampshire: Coos Co.: Mount Washington, Lake of the Clouds, 5000 ft, August 9, 1954, Becker, Munroe, Mason, 13 (CNC). Grafton Co.: Hanover, July 8, 1908, 13 (CAS). Strafford Co.: Durham, August 12, 1948, L. D. Beamer, 2♀ (KU). New York: Cattaraugus Co.: Gowanda, August 2, 1907, E. P. Van Duzee, 13 (CAS). Delaware Co.: Hobart, Gun House Hill, August 10, 1963, L. W. All, Spiraea latifolia (Rosaceae) , 23 (PDA). Essex Co.: Lake Placid, 690 m, July 4, 1991, M. D. Schwartz, 43 (CNC). Lake Placid, July 19, 1962, J. R. Vockeroth, 23 (CNC). Lake Placid, July 4, 1991, M. D. Schwartz, Picea glauca (Pinaceae) , 13, 1♀ (CNC). Whiteface Mountain, 4600 ft, July 19, 1962, J. R. Vockeroth, 1♀ (CNC). Whiteface Mountain, August 22, 1916, H. H. Knight, 1♀ (CNC). Genesee Co.: Batavia, July 12, 1914, H. H. Knight, 13, 1♀ (CAS). Batavia, July 31, 1913, H. H. Knight, 1♀ (USNM). Hamilton Co.: 7 mi S of Long Lake (town), August 26, 1956, J. C. Schaffner, 33, 2♀ (TAMU). Rensselaer Co.: Brainard, July 11, 1969, P. and B. Wygodzinsky, 1♀ (AMNH). Rockland Co.: Nyack, Memorial Park, June 12, 1988, M. D. Schwartz, Tilia americana (Tiliaceae) , 1♀ (AMNH). Rockland Lake State Park, June 26, 1988, M. D. Schwartz, Rosa sp. (Rosaceae) , 1♀ (AMNH). Sparkill Memorial Park, June 21, 1988, M. D. Schwartz, Rosa sp. (Rosaceae) , 1♀ (AMNH). Sparkill Memorial Park, June 21, 1988, M. D. Schwartz, Salix amygdaloides (Salicaceae) , 323, 38♀ (CNC). Stony Point Battlefield State Park, July 2, 1988, M. D. Schwartz, 1♀ (AMNH). Tompkins Co.: Ithaca, Cornell University, July 7, 1979, A. G. Wheeler, Jr., Fagus sylvatica (Fagaceae) , 13 (PDA). Ithaca, June 27, 1920, H. H. Knight, holotype male (pallidicornis) male (USNM). McLean, July 25, 1948, R. H. Beamer, 13 (KU). Mc­ Lean, July 27, 1916, H. H. Knight, 13, 1♀ (USNM). McLean, July 27, 1916, H. H. Knight, holotype male ( albonotatus ) (USNM). Unknown Co.: Otter Lake, July 25, 1948, R. H. Beamer, 2♀ (KU). North Carolina: Stanly Co.: Morrow Mt. State Park, June 19, 1958, D. A. Young, 1♀ (USNM). Wake Co.: Raleigh, May 18, 1973, D. L. Stephen, Rubus sp. (Rosaceae) , 13 (USNM). North Dakota: Barnes Co.: No specific locality, D. A. Mundal, Euphorbia esula (Euphorbiaceae) , 13 (DAR). Grand Forks Co.: No specific locality, July 13, 1964, R. J. Janer, 13 (DAR). Traill Co.: No specific locality, August 4, 1923, A. A. Nichol, 1♀ (USNM). Oklahoma: Adair Co.: Stilwell, Adair Recreation Area, May 24, 1986, C. B. Barr, 13 (LSU). Oregon: Klamath Co.: 13 mi W of Keno on Rt 66, 4600 ft, June 27, 1979, M. D. Schwartz, 1♀ (AMNH). Lake of the Woods, 4900 ft, September 23, 1975, Joe Schuh, Spiraea douglasii (Rosaceae) , 14♀ (OSU). Pennsylvania: Centre Co.: Bear Meadows, July 21, 1961, J. A. Chemsak, 13, 1♀ (UCB). State College, Rt 322, July 6, 1976, T. J. Henry, Rhus glabra (Anacardiaceae) , 23, 2♀ (PDA). Dauphin Co.: Fishing Creek Valley, Frog Hollow Road, June 21, 1979, T. J. Henry and A. G. Wheel­ er, Jr., Salix sp. (Salicaceae) , 33, 4♀ (PDA). Middle Paxton Township, Rt 443, Fishing Creek Valley School, June 24, 1982, A. G. Wheeler, Jr., Rhus typhina (Anacardiaceae) , 23 (PDA). Middle Paxton Township, Rt 443, Fishing Creek Valley School, June 30, 1979, A. G. Wheeler, Jr., Rhus typhina (Anacardiaceae) , 13 (PDA). Erie Co.: Girard, Elk Creek Nursery, July 9, 1976, A. G. Wheeler, Jr., Spiraea sp. (Rosaceae) , 23, 2♀ (PDA). N of Waterford on Rt 97, July 20, 1988, A. G. Wheeler, Jr., Spiraea sp. (Rosaceae) , 13, 7♀ (PDA). Indiana Co.: near Pine Flats, June 7, 1979, A. G. Wheeler, Jr., Viburnum dentatum (Caprifoliaceae) , 1♀ (PDA). Pike Co.: Lake Wallenpawpack, July 27, 1963, E. E. Simon, 1♀ (PDA). Schuykill Co.: 5 mi S of Frackville on Rt 81, July 1, 1986, A. G. Wheeler, Jr., Aronia arbutifolia (Rosaceae) , 1♀ (PDA). South Carolina: Oconee Co.: Mountain Rest, June 26, 1952, W. F. Chamberlain, 1♀ (TAMU). South Dakota: Jackson Co.: Interior, July 25, 1927, H. H. Knight, 43 (USNM). Tennessee: Davidson Co.: SE of Nashville, Beechwood Road, May 12, 1988, M. D. Schwartz, Lonicera sp. (Caprifoliaceae) , 133, 1♀ (AMNH). Vermont: Windsor Co.: Mount Ascutney, July 11, 1908, 1♀ (CAS). Spingfield, June 22, 1934, R. H. Beamer, 1♀ (KU). Washington: Snohomish Co.: Monroe, July 1, 1905, E. P. Van Duzee, 3♀ (CAS). Yakima Co.: Yakima, June 20, 1931, A. R. Rolfs, 13 (TAMU). West Virginia: Grant Co. : N of Petersburg on Rt 220, June 9, 1984, A. G. Wheeler, Jr., Aster sp. (Asteraceae) , 23, 4♀ (PDA). Tuck­ er Co.: Canaan Valley, Rt 32 near Blackwater River, August 12, 1979, A. G. Wheeler, Jr., Spiraea alba (Rosaceae) , 23, 13♀ (PDA).

Figures

Fig. 4. Plagiognathus fuscosus, male, scanning micrographs. A. Lateral view of head. B. Lateral view of abdomen. C. Metathoracic spiracle and metathoracic scent­gland evaporatory area. D. Hemelytral vestiture. E. Pretarsus.

Fig. 8. Habitus figures of Nearctic Plagiognathus spp. (see p. 263 for localities).

Fig. 16. Antennal segments 1 and 2 of Nearctic Plagiognathus spp.

Fig. 25. Male genitalia of Nearctic Plagiognathus spp.