Coptonotus doppelganger Smith and Cognato, 1869

Smith, Sarah M. & Cognato, Anthony I., 1869, A Revision ofCoptonotusChapuis, 1869 (Coleoptera: Curculionidae: Coptonotinae) with Notes on Its Biology, The Coleopterists Bulletin 1869 (3), pp. 409-428 : 409-428

Coptonotus doppelganger Smith and Cognato , new species

( Figs. 3 , 10–12 , 27–34 )

Type Material. Holotype: male, PERU: [Junín]: Chanchamayo, collection R. Oberarthur ( MNHN) . Paratypes: BRAZIL: coll. Stark ( MFB-1 ) . PERU: [Junín]: Chanchamayo ( NHMW-1 ) ; collection R. Oberarthur ( MNHN-1 ) ; Ch. O. Schunke ( MNHN- 2 ) ; 15 km NW from Satipo, Rio Venado vill., S11°11.872′ W74°46.200′ W, 1080m, 18.II.2013, A.V. Petrov ( MKC-1 ) , 23.X.2015 ( MSUC-4 ; DNA voucher SMS 247), 27.IX.2015 ( MSUC-1 ; DNA voucher SMS 246) ; 26 km NW from Satipo, Rio Venado vill. S11°11.286′ W74°45.853′ W, 1272m, 1-15.V.2014, D. Quispe ( MKC-1 ) . UNKNOWN: ( NHMW-1 ) .

Diagnosis. The species is sister to C. cyclopus and C. uteq but closely resembles C. cyclopus . Both species possess a frontal fovea in each sex, two weakly developed oblique carinae just above the epistoma, the area between the carinae and mandibles punctate with a pair of large punctures bearing a single seta above the mandibles, and the

30) Declivity. Female habitus: 31) Dorsal view; 32) Lateral view; 33) Frontal view; 34) Declivity.

size greater than 5.0 mm. Coptonotus doppelganger can be separated from C. cyclopus by the male frons bearing a broad, median, heart-shaped, punctate tumescence that is as long as wide along midline, the short, lanceolate scutellum, the sternellum rhomboidal, deeply depressed on posterior half and depressed below anterior one-quarter of the poststernellum, and the poststernellum divided by a poststernellal suture into two rounded and weakly inflated lobes ( Fig. 11 ).

Description of Male. 8.0– 8.6 mm long, 2.8– 3.0 mm wide, 2.86–2.87 times longer than wide (n = 3). Body uniformly red-brown to dark redbrown and head black. Two of the adults in the type series are teneral and light brown. Head: Appearing triangular from apex of rostrum to upper level of eyes. Rostrum nearly parallel-sided, twice as wide as long, flat, smooth, shiny, almost glabrous; apical third of rostrum with punctures smaller, shallow, primarily distributed in lateral areas, spaced 1–2 puncture diameters; apex of rostrum bearing a weakly elevated and moderately emarginate process above mandibular base and 4 large punctures along apical margin; large median puncture present along apical margin of rostrum at level of lateral margins of process, puncture 3 times the size of surrounding punctures, deeper, bearing 2 long, erect, pointed, hair-like setae, twice the length of other rostrum setae; median area between large punctures impunctate; basal 2/3 of rostrum with punctures 2–4 times larger, primarily distributed in lateral areas, spaced 0.25–6.00 puncture diameters, punctures twice as deep as those on apical third. Frons weakly shagreened, shiny, nearly glabrous, 3 single setae on each lateral margin; densely, deeply punctate, punctures spaced 0.5– 1.5 puncture diameters; median fovea present along midline at apical margin of frons, fovea 4 times size of other punctures and 7 times as deep; median frontal tumescence cordate, resembling a broad heart, as long as wide along midline, distinctly elevated. Eyes shallowly sinuate; dorsal margin at midpoint of frons, narrowly separated at gular suture (exact separation slightly variable). Point of antennal insertion at midpoint between mandibular base and upper level of eye. Antennal scape long, narrow, clavate, equal to length of funicle; funicle 7-segmented; club ovoid, basal third shagreened, setose, 3 moderately procurved sutures, each suture demarcated by a row of setae, sutures less prominent on posterior face. Vertex finely shagreened, minutely, sparsely punctate, punctures spaced 5–7 puncture diameters. Pronotum: 1.0– 1.1 times longer than wide, resembling an hourglass, widest at basal fifth, sides projecting distally at an oblique angle from basal margin to widest point, sides deeply emarginate from just anterior to basal fifth for reception of profemur, sides arcuate from apical half to fifth and abruptly constricted on apical fifth; anterior margin weakly emarginate; surface shiny, densely, deeply punctulate, punctures spaced by 1–3 puncture diameters, glabrous; lateral margins carinate; basal margin transverse, weakly carinate. Prosternal process with sternellum rhomboidal, deeply depressed on posterior half and depressed below anterior quarter of the poststernellum; poststernellum divided by poststernellal suture into 2 rounded and weakly inflated lobes ( Fig. 3 ). Legs: Procoxae narrowly separated. Protibia as described for genus and with outer margin with a large premucro at apical third and 2 smaller teeth along basal margin. Mesotibia and metatibia as described for genus. Elytra: 1.6– 1.7 times longer than wide. Elytral base transverse, carinate. Scutellum lanceolate, short, narrow; depressed below surface. Sides straight on basal 2/3, narrowed on apical third; apex entire. Elytra with strial and interstrial width equal; first interstria and stria impressed from scutellum to declivity, impression gradually becoming deeper apically. Discal interstriae impressed from basal fifth to declivity, impression gradually becoming deeper apically; discal interstriae granulate punctate, punctures alternating with granules, each puncture bearing a short, erect seta, granules becoming tubercles apically; discal stria 1 deeply punctate, punctures large, medially constricted, resembling an hourglass, becoming deeper and coarser near declivital base, punctures shagreened; interstria 2 with a large spine at discal apex. Declivity steep, flattened, occupying apical 2/5 of elytra, interstria 4 tuberculate-carinate, forming a carina from basal third, converging with interstria 7 and continuing to apex; declivital interstriae densely covered with recumbent, scale-like setae, completely obscuring interstrial surface; striae bearing a uniseriate row of short, erect setae. Proventriculus: Apical plate occupying 2/5 of length, strongly sclerotized; median longitudinal suture open, its margins parallel, dark, and lined with a row of sutural teeth, fine, parallel marginal bristles present along the entire apical plate; posterior plate occupying 3/5 of length; masticatory teeth fine, weakly sclerotized; masticatory brush long, fine, heavily sclerotized; closing teeth short, third as long as posterior plate; femoral teeth absent. Crop very closely covered with long pubescence. Terminalia: Aedeagus arcuate, apex concave, median lobe broad with lightly sclerotized central area, lateral margins lightly sclerotized, broad. Internal sac central area membranous; median orifice lightly sclerotized. Apodemes narrow, as long as 1/4 of body length. Tegmen with a slightly elongate and apically triangular anterior strut.

Female. 8.0– 8.8 mm long, 2.8 mm wide, 2.86– 3.14 times as long as wide (n = 2); pronotum 1.1–1.2 times as long as wide; elytra 1.5–2.0 times longer than wide. Similar to male except frons without a tumescence, vertex finely shagreened, finely, moderately punctate, punctures spaced 2– 5 diameters of a puncture, elytral striae with punctures half the size of those of males, elytral disc with interstria 1 shallowly impressed, elytral declivity convex, each interstria ornamented with 2–3 rows of smaller spatulate setae, base of elytral declivity unarmed.

Specimens Examined. Fourteen specimens.

Distribution. Brazil, Peru (Junín).

Etymology. Doppelganger (German for doublewalker) is a ghostly double of a person. The name signifies the difficulty of recognizing the species from the morphologically similar C. cyclopus . The name is used as a noun in apposition.

Figures

Figs. 2–6. Coptonotus species, morphological characteristics. 2–5) Prosternal process: 2) C. cyclopus;

Figs. 7–18. Coptonotus species, male genitalia, dorsal and lateral views and tegmen, respectively. 7–9) C. cyclopus; 10–12) C. doppelganger; 13–15) C. striatus; 16–18) C. uteq.

Figs. 27–34. Coptonotus doppelganger. Male habitus: 27) Dorsal view; 28) Lateral view; 29) Frontal view;