Procas lecontei Bedel, 1879

Thompson, Richard T., 2006, A revision of the weevil genus Procas Stephens (Coleoptera: Curculionoidea: Erirhinidae), Zootaxa 1234 (1), pp. 1-63 : 31-32

Procas lecontei Bedel

Procas picipes (Marsham [erratim Stephens]): LeConte & Horn 1876: 162; Hubbard & Schwarz 1878: 642.[Misidentifications]

Procas lecontei Bedel, 1879 : lii, 1884: 113; LeConte & Horn 1883: 473; Henshaw 1885: 139; Leng 1920: 318; Klima 1934: 31; Arnett 1962: 983, 1003; Kissinger 1964: 47; Obrien & Wibmer 1982: 89; Arnett 1985: 394, 2000: 516; Bousquet 1991: 339; Downie & Arnett 1996: 1526; O’Brien & Anderson 1996: 5; Anderson 1997b: 528, 536, 560, 2002: 731.

Procas sp. Anderson 1997a: 439 .

Description

Length 4.1–5.9 mm, mean (23) = 5.1. Head with frontal pit indistinct or absent; rostrum (male) × 3.67–5.0 as long as broad, mean (7) = 4.24; rostrum (female) × 4.0–4.57 as long as broad, mean (5) = 4.26, × 0.88–1.03 as long as pronotum, mean (12) = 0.95; upper surface coarsely and irregularly punctate, with no trace of a median carina.

Antennae ( Fig. 19 ) with lengths of funicle segments 1–3 in ratio 10: (5.0–7.1): (3.7–5.2), mean (16) = 10: 6.1: 4.5; segment 2 × 1.11–1.56 as long as 3, mean (16) = 2.23; segment 4 quadrate, usually broader than 3; segment 7 distinctly transverse, × 0.60–0.75 as long as broad, mean (13) = 0.7.

Prothorax × 0.83–0.88 as long as broad, mean (12) = 0.85; pronotum often with no trace of a smooth median line.

Elytra usually with white flecks at top of declivity in interstriae (2) and 3 ( Fig. 6 ) but they are often reduced, obscure, or even (apparently) absent.

Legs sometimes entirely dark red­brown (except coxae).

Vestiture as in P. p. picipes .

Terminalia. Male sternite 8 with processes short, stout, fused together along half their length or more but with sclerotized elements remaining separate ( Figs 96–99 ); female sternite 8 with pigmented areas fused, fringing setae small (<0.03 mm)( Figs 41–43 ); spermatheca with gland­lobe small, shape variable ( Figs 68–73 ).

Type material

Bedel’s type has not been examined but the La Vita Pass specimens are topotypes and Bedel’s comments clearly refer to this species.

Other material examined

UNITED STATES: 3 ex. Colorado, [La] Vita Pass , [2869 m], 28.vi (Hubbard & Schwarz)(2 BMNH, 1 CNC) ; 1 ex. ditto, except 22.vi ( BMNH) . CANADA: 1 ex. Ontario, with ‘ E. Ont. / Can. / 1884 H.F. W[ickham] ’; 1 ex. Ottawa , vi.1914 (G. Beaulieu) ; 1 ex. Ottawa , 12.v (C.H. Curran) ; 1 ex. Ottawa, Nepean St. , 15.x.192[?] ; 1 ex. with ‘ Ayl [mer] Rd. ’, 15.x ; 1 ex. Pearson, Smith , 28.v.[19]46 ; 2 ex. Pearson [Point], 5.viii.[19]46, nos. 10, 11 ; 1 ex. Pearson P[oin]t, 2.vii.[19]46, (‘R.’) ; 1 ex. Lake Ontario (?), Wilson I., 6.viii.[19]46 ; 1 ex. Hull, Chelsea , 19.vi.1911 (all CNC) ; 2 ex. Quebec, Duparquet , 1, 3.vi.1938 ; 5 ex. Duparquet , 1, 3.vi.1938, 30.vi.1940, 17.v.1942, 24.vi.1943, all ‘16924’ (all G. Stace Smith)(all CAS) ; 1 ex, Manitoba, Aweme , 1.vii.1924 (N. Criddle) ; 1 ex. North West Territories, Exmouth L[ake], 65° 02' N, 115° 54' W, 24.viii.1966 (G.E. Shewell), M.T.S. Gravity Survey Camp ; 1 ex. Yukon, Dawson, with ‘60 Mi. Rd. ’, vii.1949 (W. Judd)(all CNC) . Total : 25 specimens.

Other (published) localities

UNITED STATES: Michigan, Marquette; Michipicoton River ( Hubbard & Schwarz 1878: 642).

Comments

The white elytral spots resemble those of P. biguttatus but are less extensive (often reduced to a single spot on elytral interstria 3) and the setae composing them are often finer, so they are less conspicuous; in some specimens the spots seem to be absent. A ‘white scutellum’ is present in some specimens. The vestiture varies, as in P. granulicollis ; in most of the specimens from La Vita Pass it is coarser and browner than in those from other localities. In spite of the extraordinary variation in the shape of the gland­lobe of the spermatheca ( Figs 68–73 ) and the wide geographical separation of the populations studied, there is no clear evidence of localized variation among them.

Figures

FIGURES 15–20. Terminalia of (15) Procas granulicollis, male, ventral view, (16) P. p. picipes, female, dorsal view (right valve of ovipositor omitted). Scale­bar = 0.5 mm. Key: bc, bursa copulatrix; is, internal sac; m, manubrium; od, oviduct; op, ovipositor; s, sternite 8; sg, spiculum gastrale; sv, spiculum ventrale; t, tegmen (apex of dorsal plate). Ovipositor of P. p. picipes (17). Scale­bar = 0.1 mm. Antennae, ventral view, of (18) P. armillatus, (19) P. lecontei, (20) P. granulicollis. Scale as figs 15, 16.

FIGURES 1–8. 1. Habitus, dorsal, of Procas picipes levantinus; 2–8. Elytra, dorsal, of (2) P. p. levantinus, (3) P. granulicollis (normal form), (4) ditto (‘shaggy’ form), (5) P. p. picipes, (6) P. lecontei, (7) P. armillatus, (8) P. biguttatus.

FIGURES 86–99. Sternite 8 of male of Procas michaelis from (86) Spain, Santa Lucia, (87) Spain, Tablas de Daimiel; P. armillatus from (88) Corsica, Bonifacio, (89) Algeria, Oran, (90) Libya, Benghazi, (91) Azores, São Miguel I, Livramento; P. biguttatus from (92) Russian Far East, Evseevka, (93) China, ‘Erdzendjancy,’ (94) Russian Far East, Vladivostok, (95) Japan, Hokkaido; P. lecontei from (96) Canada, Yukon, Dawson, (97) USA, Colorado, La Vita Pass, (98) Canada, Quebec, Duparquet, (99) Canada, Ontario, Pearson Point. Scale­bar = 0.2 mm.

FIGURES 39–43. Sternite 8 of female of Procas biguttatus from (39) Russian Far East, Bikin River, (40) Russian Far East, Evseevka; P. lecontei from (41) USA, Colorado, La Vita Pass, (42) Canada, Quebec, Duparquet, (43) Canada, North West Territories, Lake Exmouth. Scale­bar = 0.2 mm.

FIGURES 65–73. Spermatheca of Procas biguttatus from (65) Russian Far East, Bikin River, (66) Japan, Gifu, (67) Russian Far East, Evseevka; P. lecontei from (68) USA, Colorado, La Vita Pass, (69) Canada, Manitoba, Aweme, (70) Canada, Quebec, Duparquet, (71) Canada, North West Territories, Exmouth, (72) Canada, Eastern Ontario, (73) Canada, Ontario, Wilson I. Scale­bar = 0.2 mm.