Euops parvus, Riedel, 2001

Riedel, Alexander, 2001, The pygmaeus-group of Euops Schoenherr (Coleoptera, Curculionoidea, Attelabidae), weevils associated with Nothofagus in New Guinea, Journal of Natural History 35 (8), pp. 1173-1237 : 1191-1195

Euops parvus sp. n.

(®gures 2, 37, 45, 47, 49, 67, 71, 72, 95, 111, 137,143, 144, 160, 174,186, 202, 213, 223)

Diagnosis. Colouration black with bluish to reddish lustre. Pronotum shining, with shallow punctures. Elytral striae moderately deeply impressed. Female: Abdominal sternite VI with simple row of nonmodi®ed setae. Male: TA as in ®gures 143±144.

Range. Figure 223. Paniai Prov. (Epomani, Kamo Vall., Bilogay), Jayawijaya Prov. (Jiwika). Altitude: 1400±2240 m.

Type material. HOLOTYPE: Irian Jaya : Paniai Prov., Bilogay, 2100±2200 m, 22± 24 December 1995, leg. A. Riedel ( ARC) . PARATYPES: Irian Jaya : Paniai Prov ., one male, Epomani , Ugida, Km 179, 1350± 1400 m, 19± 20 January 1996, leg. A. Riedel ( ARC) ; two males, Wisselmeren , Kamo V., Urapura, 1530 m, 15 August 1955, light trap, leg. J. L. Gressitt ( BPBM) ; one male, one female, Wisselmeren , Kamo V., Urapura, 1530 m, 11 August 1955, leg. J. L. Gressitt ( BPBM) ; four males, seven females, same data as holotype ( ARC) ; one male, two females, Bilogay , 2100±2200 m, 24 December 1995, leg. A. Riedel ( ARC) ; one male, one female, Bilogay , 2100 ±2200 m, 25 December 1995, leg. A. Riedel ( ARC) ; two males, four females (one marked as`allotype’), Bilogay , 2100 ±2200 m, 29 December 1995, leg. A. Riedel ( ARC) ; one male, three females, Bilogay , 2100±2200 m, 30 December 1995, leg. A. Riedel ( ARC) ; Jayawijaya Prov., two males, one females, Jiwika , trail to Wandanku, 2240±2420 m, 28 September 1996, leg. A. Riedel ( ARC) ; one female, Jiwika , trail to Wandanku, 1900±2150 m, 28± 29 September 1996, leg. A. Riedel ( ARC) .

Description

Holotype, male. Length, pronotum1 elytron: 2.19 mm. Colouration. Black; elytron with slightly reddish lustre; remainder of body with metallic deep blue shine. Head. As in ®gure 71; short, with gena 0.88 Ö as long as width of head behind eyes; contours of genae parallel in dorsal view; vertex shining, dorsally with shallow punctures, posterolaterally striolate, wrinkles curving dorsad to hind margin of eye; between hind margin of eye and striate region punctate; eyes evenly rounded, dorsally approximated, separated by c. 0.20 Ö basal width of rostrum; frons smooth except row of punctures along mesal margin of eye, anteriorly with median longitudinal impression, centre without median costa; ventrally in front of gular region shining, except medially densely deeply punctate, without median furrow, with long median submental carina extended to shortly before posterior tentorial pit. Rostrum 1.52 Ö as long as mouthparts, at widest point 1.33 Ö wider than at base; clypeus with median process apically concave; antennal insertion at base, approximatel y within basal ®fth of rostrum; in lateral aspect with dorsal contour sinuate, convex above antennal insertion, concave to apex; ventral contour at base continuous with contour of head, weakly concave to apex; dorsal and ventral contour converging from base to apex; ventral surface with submentum before hind level of maxillary cavities ¯at, posteriorly towards sides steeply rising to postgenal recesses, margins of ¯at median area converging basad, continued by median submental carina. Antenna as in ®gure 95. Prothorax. Sides rounded; without preapical constriction; disc shining, with shallow punctures. Elytron. At humerus simple; 2.45 Ö longer than wide; striae moderately deeply impressed. Thoracic venter. Prepectus c. 0.5 Ö as long as postpectus. Height of pterothorax 0.75 Ö length of elytron. Legs. Procoxa anteriorly simple. Profemur with ventral surface smooth. Protibia (®gure 111) with dorsal contour weakly curved, ventral contour subparallel, weakly sinuate; ventral surface densely granulate, densely setose. Mesotibia with dorsal edge subapically simple, without extension. Uncus of metatibia curved ventrad, at base with posteriad directed accessory tooth. Abdomen. Ventral contour in lateral view weakly concave; venter sparsely setose; sternite VII with apex evenly concave; pygidium c. 1.47 Ö wider than long, shining, shallowly punctate, sparsely setose, base laterally overlapped by elytral apex. Genitalia. Sternite VIII (®gure 160) with apex concave, apically sparsely setose with short setae, entire surface sclerotized. Tegminal plate (®gure 186) with sides subparallel before apex; apex truncate, evenly setose. Aedeagus as in ®gure 137. Apical scoop of pedon (®gure 174) with lateral margins straight and converging, with apex acute. TA as in ®gure 67, 143.

Allotype, female. Same as holotype except: Length, pronotum1 elytron: 2.16 mm. Head. As in ®gure 72; eyes separated by c. 0.37 Ö basal width of rostrum. Rostrum. Apically more strongly compressed dorsoventrally; in lateral view with dorsal contour concave shortly in front of antennal insertion, in straight line continued to apex. Elytron. 2.52 Ö longer than wide. Thoracic venter. Height of pterothorax 0.71 Ö length of elytron. Legs. Protibia in anterior view with dorsal contour weakly curved, ventral contour strongly sinuate, convex at base, concave at apex; apex of pro-, meso- and metatibia with uncus and premucro; uncus of metatibia without accessory tooth. Abdomen. Patch of modi®ed setae c. 0.74 Ö as long as wide; sternite VI with simple row of nonmodi®ed setae. Genitalia. Sternite VIII as in ®gure 213. Spermatheca (®gure 202) slender; with sclerotized spermathecal gland.

Intraspeci W c variation. Length , pronotum1 elytron: 1.88±2.34 mm (n 5 30, xÅ 5 2.17 Ô 0.10). Prothorax. Shallow punctures slightly denser and deeper in specimen from Epomani. Elytron. 2.45± 2.65 Ö longer than wide (n 5 21, xÅ 5 2.55 Ô 0.07). Thoracic venter. Height of pterothorax in males 0.66± 0.75 Ö length of elytron (n 5 12, xÅ 5 0.71 Ô 0.03), in females 0.71± 0.78 Ö length of elytron (n 5 17, xÅ 5 0.74 Ô 0.02). Genitalia. Male TA with basal sclerite narrower and more elongate in specimens from Bilogay than from Kamo valley (®gure 144). Abdomen. Female patch of modi®ed setae c.0.69± 0.79 Ö as long as wide (n 5 14, xÅ 5 0.72 Ô 0.03).

Etymological note

This epithet is based on the Latin adjective parvus (little, small) and refers to the small body size of the species.

Biological note

This species was collected in Bilogay and Jiwika on young leaves of Nothofagus starkenborghi .