Procas biguttatus Faust, 1882

Thompson, Richard T., 2006, A revision of the weevil genus Procas Stephens (Coleoptera: Curculionoidea: Erirhinidae), Zootaxa 1234 (1), pp. 1-63 : 29-30

Procas biguttatus Faust

Procas biguttatus Faust, 1882: 275 ; Bedel 1884: 113; Desbrochers 1894: 84; Winkler 1932: 1540; Klima 1934: 30; Inoue et al. 1963: 378, pl. 189, fig. 28; Egorov 1977: 33, 1981: 66; Hayashi et al. 1984: 289; Kwon & Lee 1986: 75 [= okunii Kôno ]; Somokuroku 1989: 505; Zherikhin & Egorov 1990: 25 ( Fig. 39 ), 28, 29, 31; Anon. 1994: 205 [not seen]; Caldara & O’Brien 1995: 396; Egorov et al. 1996: 437; Hong et al. 2000: 17; Kojima & Morimoto 2004: 77.

Notaris okunii Kôno, 1930: 159 ; Klima 1934: 36; Kôno & Kim 1937: 29 [not seen].

Description

Length 4.9–6.5 mm, mean (24) = 5.46. Head usually with more or less distinct frontal pit or irregular smooth area (often with both); rostrum more slender in male: × 4.5–5.1 as long as broad, mean (6) = 4.78, than in female: × 4.2–4.8 as long as broad, mean (8) = 4.49; punctures on upper surface fairly regular, interspaces sometimes uniting to form irregular carinulae but often without any trace of a median carina or apical carinula; sides above scrobes usually widening somewhat abruptly but sometimes evenly, as in P. armillatus .

Antennae with lengths of funicle segments 1–3 in ratio 10: (6.0–7.1): (3.3–4.8), mean (15) = 10: 6.6: 4.1; segment 2 × 1.5–1.9 as long as 3, mean (15) = 1.6; segment 1 × 2.1–3.0 as long as 3, mean (15) = 2.46; segment 7 weakly transverse, × 0.8–0.9 as long as broad, mean (12) = 0.87.

Prothorax with pronotal punctures fairly regular, interspaces forming a regular reticulum on disc; smooth median line vestigial.

Legs with fore tibiae straight or weakly sinuous, middle tibiae straight, hind tibiae evenly curving dorsad (as in P. picipes ).

Vestiture rather coarse, white setae forming a variegated pattern on elytra and condensed at top of declivity to form white flecks in interstriae (2), 3 and (4) which together can form a short interrupted transverse band ( Fig. 8 ); tibiae as in P. p. picipes .

Terminalia. Male sternite 8 with very slender column and slender curved blade­like processes ( Figs 92–95 ); female sternite 8 with pigmented areas more or less fused, setae small (<0.03 mm)( Figs 39, 40 ); spermatheca with gland­lobe conical at base, weakly expanded at apex and not, or only weakly, deflexed ( Figs 65–67 ).

Type material

LECTOTYPE of Procas biguttatus Faust , here designated, female, with small square of gold­surfaced paper (now oxidised to brown); ‘Wladiwast./ Christoph.’ (Faust MS); ‘Coll. J. Faust / Ankauf 1900’ (printed, on yellow card); ‘Type’ (printed on red card); ‘biguttatus’ (MS, on yellow card) and ‘ LECTOTYPE Procas biguttatus Faust det. R.T. Thompson 2003 ’ in SMT. The specimen is carded and in good condition (two tarsi are incomplete); it has white spots on both interstriae 2 and 3, so fits the description better than the other syntypes. PARALECTOTYPES: 3 females with same labels as lectotype; one is mounted below the lectotype, on the same pin, the other two have no original determination label. Faust states that he had four specimens but adds ‘und vom Amur.’

HOLOTYPE of Notaris okunii Kôno , male, with ‘Sapporo / T. Okuni’ (printed) and ‘late August [in Japanese]/ 1912’ ( MS, under label); ‘ Notaris / okunii / Kôno’ ( MS) and ‘Type’ (printed) on pale crimson label; ‘ Procas / biguttatus / Faust’ ( MS) and ‘det. H. Kôno’ (printed) on white label in HUM. The specimen is 6.3 mm in length and lacks the right hind leg which was apparently pushed off by the pin, which has also displaced the venter. The tibiae, femora and parts of the elytra are dark red­brown in colour, indicating that the specimen is somewhat teneral. The eighth tergite is exposed and shows that the specimen is male, not female, as stated by Kôno.

Other material examined

RUSSIA: 1 ex. Amur [18]77 (Christoph)( DEI) ; 1 ex., with ‘ Amur / 4997’ (on yellow card), ‘7224’ (red ink) and ‘fasciatus / Faust’ (on yellow paper with ‘?’ added later in pencil ( SMT) ; 4 ex. Amur (Radde)( NMB) ; 1 ex., with ‘ Saghalien [= Sakhalin] / K. Tamanuki’ (printed), 28.vi.1927 ( MS, under label) and ‘ Notaris okunii Kôno’ ( ZIP) ; 2 ex., with ‘ Chabarowka [= Khabarovsk] am Amur’ ( SMT) ; 1 ex. with ‘ Nikolsk­Ussurijsk , fl. B. Elduga’ (locality not found), 11.vi.1930 (T. Samoilov)( BMNH) ; 3 ex. Ussuysk , 10 and 12.vi.1930 (T. Samoilov)(2 KU, 1 MAF) ; 1 ex. Ussuri District, Bikin River, Island , 10.vii.1927 (Martynov) ; 2 ex. Suchan District, Tigrovaya River , 9.vi.1927 (Sokolov) ; 1 ex. ditto, but 8.vi.1927 (Shtakelberg) ; 1 ex. Suchan Town , vii.1925 (A. Chernysh. [?]) ; 1 ex. Primorye District, ‘ Iman. ’ [?], 22.iv.1911 (Shingarev) ; 4 ex. Evseevka , 10, 28, 29.v and 1.vi.1910 (Shingarev) ; 1 ex. ditto, but 14.v.1911 and (Ikonnikov)(all ZIP) ; 1 ex. South Primorye, Kamenushka , 19.vi.1979 (Mikheechev and Nikitsky)( BMNH) ; 1 ex. ditto, except 4.vi.1984 and (Nikitsky)( ZMUM) ; 2 ex. with ‘ Ost­Siberien / Vladivostok, Kangauz Village , 22.vi.1927 (A. Porvi [?])( SMT) ; 2 ex. With ‘E[aster]n/ Siberia’, F.P. Pascoe Coll. ( BMNH) . JAPAN: 1 ex. Honshu, Schizuoka Prefecture, Mount Amagi­san , 14.vi.1953 (K. Kusama) ; 1 ex. Gifu Prefecture, Kamitakara­mura , 16.vii.1967 (T. Nohira) ; 1 ex. Hokkaido, Mount Nipesotsu, Mamishihoro , 19.vii.1976 (H. Irie)(all KU) . KOREA: 1 ex. Gyeongbug Province, Mount Pelgongsan , 6.vi.1978 (Y.J. Kwon)( KNU) . CHINA: 1 ex. with ‘ Manshukuo, Erzendjanzsy’ [? = Erdaodianzi], 30.vi.1940 (W. Alin)( DEI) . Total : 40 specimens.

Other (published) localities

RUSSIA: Kuril Islands, Kunashir ( Egorov et al. 1996: 437). KOREA, NORTH: (No details) ( Kwon & Lee 1986: 75).

Comments

All the specimens examined have at least one white spot at the top of the elytral declivity but none has a ‘white scutellum.’ The specimen figured by Caldara & O’Brien 1995 (‘ Procas sp. ’) appears to be P. armillatus .

Figures

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 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 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.