Psallus physocarpi Henry, 1981: 399

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 : 193

Psallus physocarpi Henry, 1981: 399 (n. sp.).

DIAGNOSIS: Recognized by moderate size, dark coloration of body and all femora (fig. 11), antennal segment 2 pale except at extreme base (in both sexes) (fig. 18), and silvery, strongly flattened, scalelike setae on dorsum (fig. 36C–E), thoracic pleuron, and much of abdomen intermixed with reclining, dark or shining, simple setae (fig. 36C). Coloration and type of dorsal vestiture most similar to amorphae (fig. 5), but that species smaller than phyoscarpi. Also similar in type of vestiture to astericola (fig. 6) and morrisoni (fig. 10), but distinguished from them by largely pale antennal segment 2 in both sexes, whereas segment 2 dark in males of astericola and dark in both sexes of morrisoni . Further distinguished from astericola and morrisoni by head projecting well beyond anterior margin of eyes in those species, whereas head not so strongly projecting in physocarpi . Distinguished from alnicenatus (fig. 5) and parshleyi (fig. 11) by the generally dark antennal segment 2 and the scalelike setae being restricted to the pronotum in both of those species.

REDESCRIPTION: Male: Elongate­ovoid, of moderate size; total length 3.39–3.52, length apex clypeus–cuneal fracture 2.33–2.52, width across pronotum 1.06–1.12. COLOR­ ATION (fig. 11): Dorsum entirely castaneous, except corium adjacent to extreme base of membrane narrowly pale; membrane fumose with contrasting pale veins; antennal segment 1 castaneous except for pale apical annulus, segment 2 dark at base, remainder of segment pale (fig. 18), segments 3 and 4 pale; labium castaneous; venter entirely castaneous; metathoracic scent­gland evaporatory area totally pale; coxae, trochanters, and femora castaneous except femora pale at apex. SURFACE AND VESTITURE: Dorsum weakly granular, smooth, weakly shining. Vestiture of dorsum and venter composed of recumbent, dark or shining, simple setae intermixed with silvery, strongly flattened, scalelike setae (fig. 36B–E). STRUC­ TURE: Body elongate­ovoid, lateral corial margins weakly convex; frons weakly tumid, clypeus visible from above; anteocular distance equal to diameter of antennal segment 1; head projecting below eye by 2 times diameter of antennal segment 1 (fig. 36A); labium very long, reaching beyond apex of hind coxae and well onto abdomen; metathoracic scent­gland evaporatory area and spiracle as in figure 36B; pretarsus as in figure 36F. GENITALIA (fig. 30): Body of vesica relatively stout and strongly curving, more or less U­shaped, base of vesica reaching to about level of secondary gonopore, posterior apical spine elongate, nearly straight, weakly angled relative to body of vesica, anterior spine curving and rather strongly angled near apex in lateral view; flange moderately broad, reaching to about midpoint of gonopore.

Female: Very similar to male in coloration and body form. Total length 3.41–3.48, length apex clypeus–cuneal fracture 2.41– 2.54, width across pronotum 1.16–1.17.

HOST: Physocarpus opulifolius (Rosaceae) (Wheeler and Hoebeke, 1985).

DISTRIBUTION: Northeastern North America.

SPECIMENS EXAMINED: CANADA.— Ontario: Goderich, July 2, 1962, G. Thorpe, Anethum sp. (Apiaceae) , 1♀ (CNC). Norwich, July 19, 1962, Kelton and Thorpe, 33 (CNC). USA.— Michigan: Clare Co.: No specific locality, July 23, 1959, R. R. Dreisbach, 13 (USNM). Gladwin Co.: No specific locality, June 25, 1959, R. R. Dreisbach, 1♀ (USNM). Midland Co.: No specific locality, July 4, 1947, R. R. Dreisbach, 13 (USNM). No specific locality, June 28, 1958, R. R. Dreisbach, 4♀ (USNM). New York: Tompkins Co.: Ludlowville, Salmon Creek Road, July 3, 1979, E. R. Hoebeke, paratypes: 43, 1♀ (PDA). Ludlowville, Salmon Creek, August 4, 1979, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , 2♀ (PDA). Pennsylvania: Bedford Co.: Schellsburg, July 2, 1980, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , paratypes: 33 (PDA). Bucks Co.: near Jamison, 5 Spruce Farm, July 12, 1979, J. F. Stimmel, Picea abies (Pinaceae) , 1♀ (PDA). Dauphin Co.: Middle Paxton Township, Rt 443, Fishing Creek Valley School, July 3, 1979, A. G. Wheeler, Jr. and T. J. Henry, Physocarpus opulifolius (Rosaceae) , 9♀ (USNM). Middle Paxton Township, Rt 443, Fishing Creek Valley School, June 27, 1979 – June 28, 1979, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , paratypes: 93, 2♀ (PDA). West Hanover Township at Middle Paxton line on Rt 443, June 21, 1979 – July 5, 1979, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , 23, 2♀ (PDA); Paratypes: 43, 7♀ (PDA). Somerset Co.: E of Jennerstown, August 1, 1984, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , 4♀ (PDA). Westmoreland Co.: New Stanton, July 9, 1983, A. G. Wheeler, Jr., Physocarpus opulifolius (Rosaceae) , 2♀ (PDA).