Plagiognathus lineatus Van Duzee, 1917b: 282

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 : 149-150

Plagiognathus lineatus Van Duzee, 1917b: 282

(n. sp.).

DIAGNOSIS: Recognized by the moderately large size, the exocorium and clavus usually partly to mostly pale, contrasting with the endocorium, and forming a linear pattern of coloration (fig. 9), the dull surface of dorsum, the pronotum often partly pale, the antennae entirely black (fig. 17), and the ves­ titure of the dorsum recumbent, weakly woolly, silvery, shining. Pattern of coloration similar to that of moerens (fig. 10) and shoshonea (fig. 13); distinguished from moerens by the dull surface of the dorsum and the shining, weakly woolly vestiture rather than black bristles and polished dorsum of that species; most easily separated from shoshonea by the much larger size of that species. Some specimens totally dark and very similar in appearance to dark specimens of brunneus (see Discussion below).

REDESCRIPTION: Male: Elongate­ovoid, moderately large; total length 4.09–4.55, length apex clypeus–cuneal fracture 2.90– 3.14, width across pronotum 1.18–1.34. COLORATION (fig. 9): Background coloration of dorsum weakly castaneous to blackish, sometimes entirely dark, more commonly with some pale areas as indicated; vertex usually obviously pale; disc of pronotum usually partially to broadly pale; exocorium ranging from pale at base to totally pale; clavus usually with longitudinal marking submarginal to claval suture and covering entire length; cuneus ranging from pale at base to entirely pale; corium narrowly pale adjacent to extreme base of membrane; membrane fumose with pale veins; antennae entirely castaneous (fig. 17); labium castaneous; venter castaneous, metathoracic scent­gland evaporatory area sometimes partially to mostly pale; coxae dark on basal one­half, distal one­half and trochanters pale; femora heavily infuscate over most of surface; tibiae moderately infuscate, dorsal spines with weakly contrasting dark bases; tibiae dark at articulation with femora. SURFACE AND VES­ TITURE: Dorsum weakly granular, smooth, dull to very weakly shining. Vestiture of dorsum composed of recumbent, silvery, shining, weakly woolly setae. STRUCTURE: Body moderately elongate, lateral corial margins very weakly convex; frons distinctly tumid as viewed from above, clypeus visible from above; anteocular distance 1.3 times diameter of antennal segment 1; head projecting below level of eye by about 2 times diameter of antennal segment 1; labium reaching to about apex of hind coxae. GENITA­ LIA (fig. 26): Vesica long, body moderately stout, forming an open curve, base of vesica falling well below level of secondary gono­ pore; posterior apical spine moderately long, relatively broad, angled subapically, nearly erect relative to body of vesica; anterior spine slightly longer than posterior, angled subapically, more strongly angled relative to body of vesica than posterior; flange moderately broad, curving over entire length, terminating at about midpoint of secondary gonopore.

Female: Body more strongly ovoid than in male; pattern of coloration as in male. Total length 4.09–4.55, length apex clypeus–cuneal fracture 2.90–3.14, width across pronotum 1.18–1.34.

HOSTS: Recorded from a variety of apparent hosts, including Balsamorhiza (Asteraceae) , Lupinus (Fabaceae) , Potentilla (Rosaceae) , and Stachys (Lamiaceae) .

DISTRIBUTION: In the north ranging from Alaska to Alberta, south into western Montana and Utah and west to northwestern Oregon.

DISCUSSION: My concept of lineatus is based on examination of the two male paratypes listed under Specimens Examined. The genitalia of lineatus are very similar in form to those of brunneus (and also shoshonea ). Indeed, I have assigned some totally dark specimens to lineatus solely on the basis of their association with ‘‘typical’’ lineatus specimens as determined by locality and host data, but which on the basis of morphology I could not distinguish from dark specimens of brunneus . My decision to recognize lineatus as distinct from brunneus is based on the existence of large numbers of specimens that have the distinct linear pattern of pale markings on the dorsum and which as a group appear to be largely, although not totally, allopatric with brunneus , which occurs primarily in the Rocky Mountain system, whereas lineatus is known primarily from the Columbia River drainage.

SPECIMENS EXAMINED: CANADA.— Alberta: Eisenhower Jct. , August 5, 1970, R. T. Schuh, 2♀ (CNC). British Columbia : 1 km S of Seltat Creek, July 19, 1979, G. G. E. Scudder, 2♀ (UBC). 43 km E of Stewart, Stromm Creek, July 22, 1983, G. G. E. Scud­ der, 13 (UBC). Bella Coola, July 17, 1978, G. G. E. Scudder, 13, 1♀ (UBC). Echo Lake , July 30, 1979, G. G. E. Scudder, 13, 2♀ (UBC). Exstew, August 1, 1979, G. G. E. Scudder, 1♀ (UBC). Hodder Lake , July 22, 1983, G. G. E. Scudder, 73, 5♀ (UBC). Kinaskan Lake , July 22, 1983, G. G. E. Scudder, 1♀ (UBC). Kitimat, July 15, 1979, G. G. E. Scudder, 13, 4♀ (UBC). Mezidian Lake , July 30, 1979, G. G. E. Scudder, 13, 3♀ (UBC). Mt. Cheam , August 16, 2000, D. J. M. Quiring, 13 (UBC). Nicholson, Horse Creek , July 1, 1982, G. G. E. Scudder, 1♀ (UBC). Pleasant Camp, July 19, 1979 – August 12, 1979, S. G. Cannings, Epilobium latifolium (Onagraceae) , 33, 2♀ (UBC). Shames, July 17, 1979, G. G. E. Scudder, 23, 1♀ (UBC). Terrace, July 10, 1960, W. R. Richards, 1♀ (UBC). Valemont, June 23, 1995, G. G. E. Scudder, 13 (UBC). Northwest Territories: Inuvik, July 25, 1983, L. A. Kelton, Salix sp. (Salicaceae) , 3♀ (CNC). Yukon Territory: Rampart House, July 21, 1951, J. E. H. Martin, 1♀ (CNC). USA.— Alaska: Anchorage, July 18, 1954, R. S. Bigelow, 1♀ (CNC). Anchorage, Otter Lake , July 25, 1948, E. P. Marks, 23, 1♀ (USNM). Dyea, July 6, 1989, R. J. Cannings, 13 (UBC). Haines, July 6, 1983, G. G. E. Scud­ der, 1♀ (UBC). Matanuska, July 10, 1944, J. Chamberlain, 1♀ (USNM). Muncaster Creek , July 6, 1983, G. G. E. Scudder, 23, 5♀ (UBC). Palmer, August 1, 1948, R. I. Sailer, 13 (USNM). Palmer, June 18, 1948, F. S. Blanton, Achillea sp. (Asteraceae) , 13 (USNM). Skagway, July 5, 1980, R. J. Cannings, 23, 4♀ (UBC). Yeltakaska Creek , July 6, 1983, G. G. E. Scudder, 33 (UBC). Idaho: Franklin Co.: Cub River Canyon , July 3, 1965, G. F. Knowlton, 1♀ (USU). Dayton , 4747 ft, July 25, 1937, R. E. Miller, 1♀ (CNC). Williams Canyon , mp 20 on Rt 36, T12S R42 Sec 30, 8000 ft, July 19, 1981, M. D. Schwartz, 13, 4♀ (AMNH). Fremont Co. : 3.8 mi N of Ashton, 5500 ft, July 11, 1973, Oman and Musgrave , 1♀ (OSU). Latah Co. : Genesee , May 30, 1936, T. A. Brindley, 13, 1♀ (USNM). Moscow , July 17, 1942, T. A. Brindley, 13 (USNM). Moscow , May 30, 1936 – July 11, 1936, T. A. Brindley, 13, 1♀ (USNM). Oneida Co. : Black Pine Canyon , June 25, 1974, G. F. Knowlton, 13 (USU). Twin Springs , July 17, 1972, G. E. Bohart, 1♀ (USU). Montana: Gallatin Co. : 26 mi S of Bozeman, hot springs on Rt 191, 5700 ft, August 10, 1996, Schwartz and Stonedahl , 13, 3♀ (AMNH). Oregon: Ben­ ton Co.: Corvallis , July 9, 1944, H. H. Crowell, 23 (USNM). Helmick State Park , June 27, 1960, E. A. Dickason, 13 (OSU). Mary’s Peak , 14 mi W Corvallis, July 25, 1959 – August 10, 1956, J. D. Lattin, 23, 4♀ (OSU). Mary’s Peak , 4000 ft, July 29, 1966, W. Gagne and J. Haddock, 13, 2♀ (OSU). Crook Co. : 23 mi E of Prineville on Rt 26, June 26, 1986, G. M. Stonedahl, Lupinus sp. (Fabaceae) , 143, 20♀ (AMNH). Grant Co. : 11 mi N of Seneca, May 14, 1973, Oman and Musgrave , 1♀ (OSU). 13 mi S of Dale, 3400 ft, June 14, 1973, Oman and Musgrave , 13, 2♀ (OSU). Hood River Co. : 10 mi S of Mt. Hood at Clinger Springs , 4300 ft, July 8, 1978, N. L. Herman, 13 (AMNH). Jefferson Co. : 10 mi N of Warm Springs, May 26, 1964, K. Goeden, 13 (OSU). 15 mi NW of Warm Springs, May 19, 1997, W. F. Chamberlain, 73, 1♀ (TAMU). 3 mi E of Madras, June 6, 1962, K. M. Fender, 73, 6♀ (OSU). 34 mi E of Sweet Home, Lost Prairie , 3400 ft, July 12, 1968, J. D. Lattin, 33, 8♀ (OSU). Lincoln Co. : Yaquina Head , lighthouse, July 5, 1979, M. D. Schwartz and G. M. Stonedahl, Stachys mexicana (Lamiaceae) , 83, 9♀ (OSU). Linn Co. : 38 mi E of Sweet Home, Lost Prairie , 3800 ft, July 29, 1958, J. D. Lattin, 13, 1♀ (OSU). Tombstone Prairie , 35 mi E of Sweet Home, 4200 ft, September 12, 1956, J. D. Lattin, 13, 5♀ (OSU). Tombstone Prairie , July 19, 1972, G. Eulenson, 33, 3♀ (OSU). Tombstone Prairie, T 13S R6E, 4200 ft, September 5, 1963, K. Goeden, 53, 5♀ (OSU). Multnomah Co. : Portland , July 3, 1917, W. M. Giffard, 13, 2♀ (CAS) ; Paratypes: 23 (CAS). Union Co.: 4.5 mi E of Tollgate, Woodland Campground , 5000 ft, August 4, 1986, Schuh , Schwartz , Stonedahl , Potentilla fruticosa (Rosaceae) , 63, 20♀ (AMNH). Wallowa Co. : 25.5 mi E of Tollgate, 4300 ft, August 4, 1986, Schuh , Schwartz , Stonedahl , 23, 9♀ (AMNH). Joseph , June 13, 1973, Oman and Musgrave , 193, 40♀ (OSU). Wasco Co. : 2 mi S of Simnasho, 2900 ft, June 6, 1972, J. D. Lattin, 13, 1♀ (OSU). 9 mi E of The Dalles, May 18, 1972, J. D. Lattin, 63, 3♀ (OSU). Mosier , May 5, 1939, Schuh and Gray , 13 (OSU). Rowena Crest , May 4, 1973, P. W. Oman, 113, 12♀ (OSU). Wheeler Co. : 4 mi SE of Fossil, June 5, 1979, P. W. Oman, Balsamorhiza sp. (Asteraceae) , 53, 5♀ (OSU). Yamhill Co. : top of Bald Mountain , July 13, 1958, K. M. Fender, 23, 3♀ (OSU). Utah: Cache Co. : Tony Grove Lake , 8100 ft, August 12, 1981, G. F. Knowlton, 1♀ (USU). Rich Co. : Allen Canyon , July 10, 1974, G. F. Knowlton, 13 (USU). Washington: Asotin Co. : 3 mi N of Anatone, June 5, 1970, P. W. Oman, 23, 4♀ (OSU). Benton Co. : Hanford Site ALE, Rattlesnake Ridge , June 10, 1994, R. S. Zack, 23, 2♀ (CNC). Hanford Site ALE, Rattlesnake Ridge , spring, June 10, 1994, R. S. Zack, 33, 1♀ (CNC). Hanford Site ALE, T11N R25 E Sec 20–21, May 4, 1994, R. S. Zack, 13 (CNC). Hanford Site ALE, T11N R26 E Sec 8, 1200 ft, May 4, 1994, R. Zack, 33, 1♀ (OSU). Chelan Co. : Blewett Pass , May 24, 1931, F. P. Dean, 1♀ (TAMU). Clallam Co. : Forks , July 2, 1920, E. P. Van Duzee, 163, 16♀ (CAS). Grant Co. : 2 mi W of Moses Lake, May 12, 1973, P. W. Oman, 53, 5♀ (OSU). Klickitat Co. : 1.4. mi E of Bingen, May 12, 1978, Oman and Lattin , 13 (OSU). 13 mi W of Goldendale, May 10, 1973, P. W. Oman, 33, 1♀ (OSU). 2 mi NW of Lyle, May 5, 1973, P. W. Oman, 43, 5♀ (OSU). 3 mi S of Husum, May 24, 1977, P. W. Oman, 43, 4♀ (OSU). 3.7 mi SE of Wahkiakas, May 10, 1973, Musgrave , 53, 4♀ (OSU). 5 mi NE of Lyle on Rt 122, May 10, 1973, Musgrave , 23, 1♀ (OSU). Maryhill , April 28, 1938, K. Gray, 23, 1♀ (OSU). Okanagan Co. : 1 mi E of Wahkiakas, May 10, 1973, Musgrave , 13, 2♀ (OSU). Pierce Co. : North Fort Lewis , July 5, 1944, P. H. Arnaud, Jr., 23 (CAS). Whitman Co. : Colfax , July 19, 1925, C. L. Fox, 23, 1♀ (CAS). Uniontown , 2690 ft, July 14, 1936, B. F. Coon, 13 (USNM). Yakima Co. : Tampico , June 1, 1932, A. R. Rolfs, 1♀ (TAMU). Tampico , May 10, 1926, 23 (USNM). Yakima , June 1, 1931, A. R. Rolfs, 13 (OSU). Yakima , June 1, 1931, A. R. Rolfs, 33, 7♀ (TAMU) .