Compsus viridivittatus (Guérin-Méneville) 1855

O’Brien, Charles W. & Peña, Jorge, 2012, Two species of Compsus Schoenherr, new citrus pests from Colombia (Coleoptera: Curculionidae: Entiminae), Insecta Mundi 2012 (227), pp. 1-13 : 10-12

Compsus viridivittatus (Guérin-Méneville) 1855

Figures 5–8 , 11–12 , 15–18

Platyomus viridivittatus Guérin-Méneville 1855: 592

Compsus viridilineatus: Jekel (nomen nudum)

Description. Body elongate-oblong; integument black, nearly concealed by scales; clothed densely with nacreous white and metallic blue and/or green often scintillating, round to oval, recumbent scales forming three distinct vittae on prothorax and elytra; medial prothoracic vitta extending onto head as broad apically acute triangle; and with moderately sparse, scarcely evident, recumbent, strap-like setae; with no areas of white, or of blue and green colored scales raised or impressed, all on same level except for convex elytral intervals 3, 5, 7, and 9.

MALE: Rostrum 0.33× wider than long; with narrow deep median impression, broader apically; and pair of shorter, obliquely angled, lateral sulci; basal 1/2 completely clothed with dense erect scales, concealing integument, apical 1/2 with recumbent imbricate scales, all scales white; with sparse, indistinct, short, strap-like setae; nasal plate glabrous, deeply triangular, with sharply carinate margins. Head with frons weakly convex, flattened medially, with small fovea and narrow sulcus, densely clothed with imbricate white scales, concealing integument; area behind frons with median, sub triangular macula of metallic blue scales reaching base of head; remainder of head clothed with dense white scales; base of head with sparse fine punctures evident, each with indistinct white recumbent strap-like seta. Antennae with scape moderately clavate, with dense elongate recumbent mainly white scales, with few blue scales at base, and moderately dense long coarse scale-like suberect white setae; funicular antennomeres elongate, 1 about 0.90× as long as 2 and scarcely wider, 1 about 0.33× longer than 3; 4–6 subequal in length, 1/2 as long as 2; 7 subequal in length to 3; 1-6 clothed densely with recumbent scales and coarse long setae, 7 clothed with dense coarse recumbent setae, and ring of subapical moderately fine erect setae; club elongate-oval acute, 2.0× as long as and 2.0× as wide as funicular antennomeres 1 and 2. Prothorax transverse, 1.19× as wide as long, sides weakly rounded behind apical third, then weakly narrowed to base; basal margin very strongly bisinuate; disc unevenly convex, not longitudinally impressed; disc clothed with dense, recumbent, imbricate, round to oval, nacreous white, and metallic blue and green scales, many iridescent, forming three complete narrow vittae from apex to base; with small to elongate, unevenly spaced, very deep punctures; apical margin with transverse narrow band extending to ventral area; disc with moderately sparse, short, coarse, recumbent, strap-like setae ( Fig. 5–8 ). Scutellum large, narrowly rounded basally and apically broad with rounded margin; clothed with glossy, recumbent, blue scales. Elytra elongate-oval, subparallel behind obliquely angled, subacute humeri, then sides narrowed gradually at declivity and evenly narrowed to emarginate, projecting apices; intervals clothed with dense, recumbent, imbricate, nacreous white, and vittate with blue and green, metallic scales, many scintillating; intervals 2, 3, and 4 behind base forming broad blue and green vitta, reaching to near apex of declivity, extending laterally at base of intervals 5 and 6, just behind humeri; with sinuate similar vitta on parts of intervals 7, 8, and 9, narrowed basally and apically; remainder of nacreous white scale coating; strial punctures small to large, deep, round and distinct, unevenly distributed, separated by 10–12× own diameter; intervals uneven in width, each with sparse scarcely evident short strap-like recumbent seta; intervals 3, 5, and 7 strongly subcarinately raised. Venter completely clothed with dense recumbent, imbricate scales and moderately dense, subrecumbent, short, strap-like setae, with fine, sparse, unevenly spaced punctures; propleuron with broad, metallic, blue and green vitta; prosternum behind procoxae and metasternum in medial area with similar colored maculae, remaining scales nacreous white; sternum II with pair of similar, submedian, round maculae; sternum I weakly impressed on medial basal 1/2, 1.40× as long as II; III and IV subequal in length, together 0.70 as long as II; sternum V slightly shorter than II, 0.90× as long; V flattened, short and broadly truncately rounded. Legs stout; forefemur very strongly, asymmetrically swollen at apical 1/3; all femora with 1 or more blue and green maculae of scales, remaining area with dense imbricate nacreous white scales; tibiae with similar white scales and with long, dense, suberect, white setae on inner margin; fore- and midtibiae with strong, acute, apical mucrone; hind tibia lacking mucrone. Genitalia: Median lobe broadest at base dorsally, sides straight and narrowed to apical 1/5, there rounded to apex; dorsally apical 1/5 open, not sclerotized ( Fig. 11 ); ventrally with subapical, strong, angulate swelling ( Fig. 12 ). Length, pronotum and elytron: 8.10mm. Length, head and rostrum: 2.40mm. Total length: 10.50mm.

FEMALE: Same as male except: Venter with metasternum and medial areas of abdominal sterna I and II clothed with recumbent metallic blue and green scales, sternum I broadly flattened basally and convex apically; sternum II strongly, transversely convex; sternum V narrowly weakly longitudinally convex along midline. Genitalia: Sternum VIII with plate oblong-oval, sclerotized arms broad and apically broadly rounded, narrowly membranous between arms for length of plate ( Fig. 15 ); spermatheca C-shaped, cornu directed subapically, scarcely turned dorsally, ramus strongly directed dorsally, slightly longer than cornu, collum narrowing from narrow base to subacute apex ( Fig. 16 ). Coxites with several long ante-apical setae; styli short, 3.3× longer than width at base, apically rounded ( Fig. 17–18 ). Length, pronotum and elytron: 11.50mm. Length, head and rostrum: 2.80mm. Total length: 14.30mm.

Remarks and comparative notes. This species although similar to other blue, green and white vittate or mottled species, can be distinguished from them by the four vittae which extend nearly the full length of the elytra, not found in these other species. The extension of the medial prothoracic vitta as a blue and green triangular macula on the base of the head is diagnostic for this species as well.

Intraspecific variation. This species is most variable in the color of the metallic scales, with some specimens mainly green and others mainly blue, although the mix of blue and green is most common. In general the iridescent scales are most often the green scales. The widths of the vittae are extremely variable from very narrow to very wide. The range in total size is great, from 9.00 to 15.70mm.

Range. Known only from numerous widespread departments of Colombia, from Antioquia in the North West to Santander in the North East and south through several departments to Valle del Cauca and Tolima.

Material examined. On hand for this study were 182 specimens which are deposited in ASUT, BMNH, CASC, CMNH, CWOB, FSCA, UNCM, and USNM. COLOMBIA: Antioquia: Tamesia, Finca Cristalina, on tangelo (17) ; Vda. El Libano, 984m, 5º 90657N, 75º 68961W, Hydrangea, citrus, B. Rengift, no date (25). Caldas: Chichina, Finca Indiana, on orange, no date, no collector (14) ; Chichina, Vda. Morano , 12-19-2008, C. Mejia leg. On orange, Citrus Salustiana (9) ; Neira, Vda. Los Planes, Dec. 10.2008, on citrus, Albeiro L. (13). Cundinamarca: Beltran, Vda. Paquita, Fca. El Limonae, 4º 6122N, 74º 80348W, citrus, M. Zambrano, 268m. no date (8) ; Quindio: Armenia , on citrus, 7-III-1998, J. E. Peña Ref. # 23-98 (6) ; La Tabaida, Vda. Argentina, Fca. Pernambuco [ca 1200 m] 4º 4622N, 75º 015W, on sweety orange, J. H.Patacino (11) ; Montenegro , 19-11-1997, J. E. Peña, Citrus, leaves, roots, fruits, Ref. # 17-97 (3) ; Risaralda: Belen de Umbria, Finca Buenos Aires, 12-10-2008, on Citrus, A. Ramirez (18), same except, 11-9-2008 1140m. 5º 1422N, 75º 84373W, on citrus(tangelo), C. Galves (4) ; Pereira, Feb. 9.2009, 1211m., 4º 80189N, 75º 84781W, on Arachis pintoi, C.Tovar (10), Same except, 4º 82673N, 75º 77531W, 1245m., 2-9-2009, on citrus (Valencia), C. Galves (5), same except, Vda. Combia, Dec. 4, 2008, 1211 m., on Lily grass, G. Galves (1). Santander: Lebrija, Vda. La Esmeralda , Fca. Las Palmas,[about. 1100 m], Feb. 3 2009, Tangerine Arrayana 7º 14366N, 73º 22719 W, L. Velandia (10). Tolima: Armero, Guayabal, Vda. La Palmera , Fca. Limoniales, 286m., Feb. 13 2009 on Tahiti lime W. King 3º 04622N, 74º 85454W. (5) ; 4km. SE Ibague, 19 June 1982, Clark & Cave (2). Valle del Cauca: Caicedonia, Finca Las Brisa & Las Palmas, no date, on Arachis pintoi, 4º 40340N, 75º 86317W, [Patacino?], 1066m., (7) ; same except, on Valencia orange, Patacino (8); Sevilla, Vda Palmichal , on sweety orange, leg. Patacino (5) .

Figures

Figures 5–8. Habitus. 5) C. viridivittatus–male dorsal. 6) C. viridivittatus–male lateral. 7) C. viridivittatus–female dorsal. 8) C. viridivittatus–female lateral.

Figures 9–12. Male median Lobe. 9) C. obliquatus–dorsal. 10) C. obliquatus –lateral. 11) C. viridivittatus–dorsal. 12) C. viridivittatus–lateral.

Figures 13–18. Female genitalia. 13) C. obliquatus–sternum VIII. 14) C. obliquatus–spermatheca. 15) C. viridivittatus–sternum VIII. 16) C. viridivittatus–spermatheca. 17) C. viridivittatus–ovipositor, dorsal view. 18) C. viridivittatus–ovipositor, lateral view.