Panscopus (Nocheles) rugicollis Buchanan, 1927

Spanton, Timothy G. & Anderson, Robert S., 2016, A Taxonomic Revision of Weevils of the Genus Panscopus Schönherr (Coleoptera: Curculionidae: Entiminae: Tropiphorini), The Coleopterists Bulletin (mo 15) 70, pp. 1-86 : 64-66

Panscopus (Nocheles) rugicollis Buchanan, 1927

( Figs. 26 , 52 , Map 27 )

Panscopus (Nomidus) rugicollis Buchanan 1927: 31 . Schenkling and Marshall 1931: 41; Buchanan 1936: 15; Blackwelder 1939: 66; Bousquet et al. 2013: 345.

Panscopus rugicollis ; Hatch 1971: 290. O’ Brien and Wibmer 1982: 63; Bright and Bouchard 2008: 263.

Panscopus remotus Van Dyke 1949: 55 . O’ Brien and Wibmer 1982: 63.

Type Material. Panscopus rugicollis , holotype female ( USNM No. 28915): “ Mt. Adams , Washington 6000’ July 3 1925 M. C. Lane, Coil.” The holotype female of P. remotus , “ Taquitz Valley / San Jacinto Mountains , Calif. VI-14-1939; E. S. Ross / Collector; lupine.roots” ( CASC), was also examined .

Notes about Synonymy. Van Dyke’ s holotype of P. remotus is dark in color. Otherwise, it fits the description of P. rugicollis (as noted in Bright and Bouchard 2008). Two other specimens, both females with data “Lassen Nat’ l/ Park Cal./ VI-12-31; Kelly’ s Ranch; Van Dyke/ Collection” ( CASC) and “Norval Flats/ Lassen Co Cal./ 7-12-20/ 5500 ft; J. O. Martin/ Collector” ( CASC) and initially identified as P. remotus , are also darker colored individuals of P. rugicollis . Males of P. rugicollis from Lassen County ( CMNC) and Tulare County ( CMNC), California are are very dark, almost black, with a much more narrow body form than the females. One female from the Lassen County series is also very dark in color, but otherwise appears to match P. rugicollis from elsewhere in the species’ range.

Specific Epithet. The epithet rugicollis was derived from the Latin nouns “ ruga”, meaning wrinkle or crease, and “ collum”, neck, or collaris, pertaining to the neck. It was applied to this species probably in reference to the pronounced rugosities of the prothorax, which Buchanan (1927) recorded in his brief description.

Diagnosis. Adults of this species share with those of P. abruptus a median carina on the prementum. This character state distinguishes these two species from all other species of Panscopus . Panscopus rugicollis has the even elytral intervals setose their entire length, whereas specimens of P. abruptus are without setae on the even intervals. In addition, specimens of P. abruptus are very dark brown in color, whereas most P. rugicollis specimens are generally not as dark; however, males attributed to this species from Tulare and Lassen Counties are a very dark brown, almost black.

Redescription. Females: Length 7.4–9.0 mm (n = 10); width across elytra 2.9–3.4 mm (n = 10). Males: Length 6.4–6.7 mm (n = 8); width across elytra 2.4–2.6 mm (n = 8). Color: Medium to very dark brown. Head: Broad, transverse depression at base of frons evident but not pronounced, frons and rostrum nearly continuous in lateral view; rostrum without carinae visible through vestiture in most specimens; some specimens with thin median longitudinal carina faintly visible through scales; nasal plate indistinct, some scales inserted in area of nasal plate; nasal carina broadly U-shaped in most specimens; vestiture of frons and rostrum of dense, overlapping, striate scales and scattered, decumbent, broad, flattened setae. Mouthparts: Prementum with median longitudinal carina in apical 1/3–1/2 (lacking or difficult to see in some specimens). Antennae: Scape short, extending to only anterior margin of eye; integument concealed by dense vestiture over most of length; antennomeres 2–8 each with dark brown, long, apically directed primary setae and short, fine lighter-colored appressed secondary setae, integument clearly visible through vestiture. Pronotum: Broadly rounded laterally, approximately 1/6 (males) to 1/5 (females) wider than long; dorsal surface coarsely rugose; longitudinal sulcus evident, more pronounced in anterior 1/2; vestiture of dense, striate scales and scattered, decumbent setae; males with widest point distinctly in front of middle. Elytra: Broadly oval in females, combined width approximately 2/3 length, approximately 40% wider than pronotum, less broad in males, more elongate and narrow; declivity rounded in lateral view, apex of elytron straight, slightly reflexed ventrally in females, not so in males; alternate intervals very slightly elevated, with single or partly double row of coarse, blunt setae, even intervals with single row of setae; serial punctures each with round scale larger than surrounding scales (hard to see on very dark specimens); elsewhere vestiture of dense, overlapping scales. Legs: Tibiae 1, 2, and 3 with few stout, dark brown spines on ventral margin in distal half; tibia 3 curved, corbellar area narrowly and indistinctly closed. Abdomen: Vestiture of scales and scattered setae; ventrite 1 convex at middle in females, strongly concave at middle in males. Genitalia: Females ( Figs. 26 , 52 ): Sternum VIII with apical expansion approximately 1/3 of length; coxites narrowed angularly toward apex in dorsal view, rounded apically in lateral view, stylus with 2 or 3 setae at apex; vagina with pair of curved sclerites anteriorly; spermatheca sickle-shaped, broad. Males: Aedeagus slightly decurved, angular at apex with median apical acuity in posterodorsal view; manubrium of tegmen and median struts of aedeagus each slightly longer than median lobe; internal sac membranous, horseshoe-shaped sclerite elongate, closed apically; small v-shaped sclerite internal to horseshoe-shaped sclerite in dorsal view.

Life History. Of the specimens seen, most were collected in July and June, some in August and May, four in April, and one in each of March and September. Males of the species are known only from Black Mountain, Lassen County and Sequoia National Forest, Tulare County, California.

Plant Associations. The type specimen of P. remotus was reported by Van Dyke (1949) to have been collected from the roots of Lupinus sp. A number of specimens were collected from sifted leaf litter.

Geographical Distribution. This species lives in montane forest habitats in the Pacific region from southern California to central British Columbia. Altitudinal records from label data range from 500 to 3,050 m. The lowest figure is from the northern end of the geographical range in central British Columbia. These weevils live at higher elevations in the southern portions of the geographical range of the species. It occurs in BC, CA, ID, OR, and WA ( Map 27 ) .

Chorological Affinities. See this topic for P. abruptus above.

Material Examined. In addition to the type material indicated above, approximately 560 specimens were examined. CANADA: British Columbia: Endako , 20.VII.1927, R. Hopping (1, CASC) ; Hope Mountains , 3.VIII.1932, A.N. Gartrell (1, CNCI) ; Quesnel 500 m, 18.VII-13.VIII., S. & J. Peck, pine-aspen forest (1, CMNC) . USA: California: El Dorado Co., Echo Lake , 21&. 22. VII.1941, A.T. McClay (5, UCDC) ; Snowline Camp , 27.VI.1948, C.D. MacNeill (1, UCDC) . Fresno Co., Huntington Lake , 25.VII.1940, A. T. McClay (7, UCDC) . Lassen Co., Facht , 11.VI.1922, J.O. Martin (1, CASC) ; Norval Flats , 10.VI.1920 (1, CASC) ; Norval Flats , 1680 m, 12.VI.1920, J.O. Martin (1, CASC) : Lassen National Park, Kelly’ s Ranch , 12.VI.1931, Van Dyke collection (1, CASC) ; Blacks Mountain Experimental Forest , IX/ X.1997, S. O’ Keefe and N. Rappaport, sifting litter (6, CMNC) . Riverside Co., Taquitz Valley, San Jacinto Mountains , 14.VI.1939, E.S. Ross, Lupinus roots (1, CASC) . Shasta Co., Bridge Camp , 1.VI.1946, A.T. McClay (8, UCDC) . Siskiyou Co., Macdoel , 9.6 km S., 31.III.1962, J. Schuh, Pinus litter (1, CWOB) ; McCloud, 4 mi. E, Fowler’ s Camp , 2.VII.1963, V.B. Whitehead (1, CWOB) ; McBride Spring , 6.4 km. N.E. Mt. Shasta, 4.VII.1963, V.B. Whitehead (1, OSUC) ; McCloud , 25.VI.1914, Van Dyke collection (2, CASC) ; Mt. Shasta , 16.VII.1938, 1.VII.1940, 11.VI.1941, 30.VI.1941, A.T. McClay (82, UCDC) ; Mt. Shasta , 6.4 km N.E. McBride Spring, 4.VII.1963, V.B. Whitehead (1, CWOB) ; Mt. Shasta, Panther Meadow , 2350 m, 1.VIII.1982, R.L. Westcott (1, CMNC) . Trinity Co., Mountain Meadow Ranch, head Coffee Creek , 8-10.VII. 1969, W.G. Goodman (1, UCDC) . Tulare Co., Sequoia National Forest, Boulder Creek , 36.1562N, 118.5409W, 22.VII.2005, M. Caterino (1, CMNC) ; 36.1585N, 118.5406W, 21-23.VII.2005, M. Caterino, cantharidin pitfall (1, CMNC) ; Packsaddle Creek , 35.9554N, 118.5755W, 4.XII.2005, rotten pine log, M. Caterino, S. Chatzimanolis (1, CMNC) . “ Calif. ”, Buto (1, USNM) . Idaho: Adams Co., Bear , 2.VII.1968, B.F. & J.L. Carr (2, CNCI) . Blaine Co., Pettit L, 10.VII.1968, B.F. & J.L. Carr (1, CNCI) . Valley Co., McCall , 10.VI.1933, FH. Shirk (2, OSAC) ; McCall, Brundage Mountain , 1830 m, 24.VI.1938, M.C. Lane (2, OSAC) . Oregon: Baker Co., Baker, Pine Creek , 22.III.1942, K.M. & D.M. Fender (1, OSAC) ; Sumpter , 15& 17.VI.1984, B. F. & J. L. Carr (2, CNCI) . Clackamas Co., Government Camp , 5 km N., 26.VII.1961, D.R. Smith, ex Lupinus (1, OSAC) ; Mt. Hood, government Camp , 1.6 km S., 25-29.VII.1966, Vaccinium , at night (1, CWOB) . Deschutes Co., Indian Ford C., 17.VI.1970, R. Turnbow (1, CWOB) ; Bend , 11.3 km S., 29.VII.1958, G.F. Kraft (1, UICM) . Douglas Co., Diamond Lake , 29.VI.1941, K.M. & D.M. Fender (2, OSAC) ; Diamond Lake , 15.VII.1927, E.H. Nast (1, CASC) . Grant Co., Malheur National Forest, Magone Lake Campground , 6-9.VI.1989, E. Fuller, beating shrubs (1, CMNC) . Harney Co., Steen Mountains ., 25.VI.1922, Van Dyke collection (1, CASC) ; Steens 2440–3050 m, 14-16.VII.1953, Roth & Beer (1, OSAC) . Hood River Co., Cloud Cap Inn , 6.4 km E., 26.VII.1961, D.R. Smith (1, OSAC) ; Cloud Cap Road, Mt. Hood , 1370 m, 17.VII.1933, S.E. Crumb (1, OSAC) ; Mt. Hood 1530–1830 m, 1.VII.1927, E.C. Van Dyke (10, CASC) ; Mt. Hood , 1520m, 21.VI.1925, M.C. Lane (2, USNM) ; Mt. Hood, Homestead Inn , 1.VII.1927, E.C. Van Dyke (5, CASC) . Jackson Co., Union Creek , 6.VII.1941, A.T. McClay (19, UCDC) ; Rogue River National Forest, North Fork Campground, 58 km. E. Medford, Highway 140, 30. VI.1986, T.G. Spanton (8, CMNC) . Klamath Co., Crater Lake , 21.VIII.1948, M.H. Hatch (1, OSAC) ; Crater Lake , 16.VIII.1934, J. Bongberg (2, UCDC) . Klamath Co., Crater Lake , 6.VII.1941, A.T. McClay (1, UCDC) ; Ft. Klamath , auto boreas (1, USNM) ; Mt. Pitt Trail , 14.VI.1961, J. Schuh, Abies concolor (1, AMNH) ; Upper Klamath Lake , 28.VI.1917, R. Hopping (1, CASC) . Lake Co., La Pine, 24 mi E., 12.VIII.1968, G.F. Kraft (1, UICM) ; Lakeview, Crane Mt. Trail, 26.VI.1984, B.F. & J.L. Carr (2, CNCI) ; Lakeview, Willow Creek Camp, 27.VI.1984, B.F. & J.L. Carr (1, CNCI) ; Warner Mountains , 20.VI.1922, Van Dyke collection (32, CASC) . Lane Co., Frog Camp Campground., N. E. Corner , 2.VIII.1966, W. Gagne, Ex Vaccinium (4, CWOB) ; Olalie Creek, 13 km. N. Belknap Springs , 3.VI.1947, B. Malkin & I.M. Newell (1, FMNH) . Umatilla Co., Lehman Springs , hwy 244, 14.VI.1984, B.F. & J.L. Carr (1, CNCI) ; Tollgate Road, Blue Mountains ., 11.VI.1938, Van Dyke collection (5, CASC) ; Tollgate Road, Blue Mountains , 21.VI.1941, K.M. & D.M. Fender (1, OSAC) . Union Co., IX.1974, D. Schuh (1, AMNH) . Wallowa Co., Wallowa Lake , 1370m, 15.VI.1938, M.C. Lane (1, OSAC) ; Wallowa Lake ., 22& 23.VI.1941, K.M. Fender (2, OSAC) ; Whitman National Forest., Anthony Lakes , 9.VII.1941, M.C. Lane (1, OSAC) . Counties unknown: Swim , 2.VII.1942, Schuh & Gray (1, AMNH) . Washington: Grays Harbor Co., Montesano , 8.V.1932, J. Wilcox (1, UCDC) . Kittitas Co., Easton , 10.VI.1938, M.C. Lane (5, OSAC) ; Easton , 18.IV.1931, W.W. Baker (2, USNM) . Okanagan Co., Lone Fir Campground, 16 km W. of Mazama , 20.VI.1987, T.G. Spanton, Amelanchier alnifolia , at night (5, CMNC) . Pierce Co., Mt. Rainier National Park, Sunrise 1950 m, 11.VII.1961, E.C. Becker (1, CNCI) ; Mt. Rainier National Park, Sunrise , 13.VIII.1931 (7, WSU) ; Mt. Rainier National Park, Sunrise 1940 m, 13.VIII.1931, J. Wilcox (3, CUIC; 5, CASC) ; Mt. Rainier National Park, Sunrise 1940 m, 14.VIII.1931, W.W. Baker (1, CASC) ; Mt. Rainier Natl. Pk., Sunrise 1940 m, 28.VII.1932, S.E. Crumb (1, CASC) ; Mt. Rainier Natl. Pk., Sunrise Peak , 24.VII.1936, Van Dyke collection (50, CASC; 1, CMNC) ; Mt. Rainier, Sunrise , 14.VIII.1931, W.W. Baker (1, CNCI; 4, USNM) ; Mt. Rainier, Sunrise 1925 m, 23.VII.1932, J. Wilcox (3, AMNH) ; Mt. Rainier, Sunrise 1950 m, 6.VIII.1935, 25.VII.1936, W.W. Baker (3, OSAC) ; Mt. Rainier, Sunrise 1940 m, 28.VII.1932, S.E. Crumb (2, CNCI) ; Mt. Rainier, Sunrise, 1890, Shallow Lake , A.T. McClay collection (2, UCDC) ; Mt. Rainier, Sunrise , 1925 m, 23.VII.1932, J. Wilcox (1, CNCI; 1, DEUN) ; Mt. Rainier, Sunrise , 1940 m, 14.VIII.1931, W.W. Baker (2, UCDC) ; Mt. Rainier, Sunrise , 1950 m, 5.VIII.1935, W.W. Baker (2, UCDC) ; Mt. Rainier. Sunrise , 1925 m, 23.VII.1932, J. Wilcox (26, OSAC) ; Mt. Rainier. Sunrise , 1925 m, 28.VII.1932, S.E. Crumb (6, OSAC) ; Mt. Rainier National Park , 14.VII.1945 (2, UNSM) ; Mt. Rainier Nat’ l. For., Hell’ s Crossing , 30.V.1935, J. Wilcox (12, OSAC) ; Mt. Rainier National Park, Tipsco Lake , 1640 m, 20.VII.1966, W. Gagne, Solidago ciliosa , night 37°F (1, BMNH; 2, CMNC; 46, CWOB; 1, OSUC; 1, RHTC) . Yakima Co., Bird Creek, Mt. Adams , 1220–1830 m, 24.VII.1921, M.C. Lane (1, USNM) ; Mt. Adams , 3.VII.1931, F.H. Shirt (3, OSAC) ; Mt. Adams, Bird Creek , 31.VII, W. Bales (4, WSU) ; Mt. Adams, Bird Creek 1520 m, 18.VII.1933, K. Jackson (1, OSAC) ; Signal Peak , 21.VI.1935, S.E. Crumb (3, OSAC) ; Signal Peak , 21.VI.1935, J. Wilcox (2, OSAC) ; Signal Peak Ranger Station , 15.VII.1933, J. Wilcox (20, OSAC) ; Yakima Indian Forest Preserve, 1.VII.1925, Van Dyke collection (1, CASC) . Counties unknown: western Washington , P. Eide (1, WSU) .

Figures

Map 27. Geographical distribution of Panscopus rugicollis.

Figs. 17–26. Panscopus species, sternum 8 (spiculum ventrale), ventral (a) and left lateral (b) views. 17) P. torpidus; 18) P. ovalis; 19) P. tricarinatus; 20) P. bufo; 21) P. schwarzi; 22) P. coloradensis; 23) P. aequalis; 24) P. squamifrons; 25) P. abruptus; 26) P. rugicollis. Scale bar = 1 mm.

Figs. 47–52. Panscopus species, coxites and vagina, dorsal (a), ventral (b), and left lateral (c) views. 47) P. schwarzi; 48) P. coloradensis; 49) P. aequalis; 50) P. squamifrons; 51) P. abruptus; 52) P. rugicollis. cx = coxites; st = stylus. Scale bar = 1 mm.