Cyamobolus tragopoides Heller 1940: 102

Setliff, Gregory P., 2008, Review of the Indonesian GenusNothotragopusZimmerman (Coleoptera: Curculionidae: Cryptorhynchinae), The Coleopterists Bulletin (Basel, Switzerland) 62 (2), pp. 203-214 : 203-214

Cyamobolus tragopoides Heller 1940: 102 .

Diagnosis. This species is characterized by an abrupt anteapical process on the ventral surface of the female rostrum ( Fig. 11 ) and unique scales on the dorsum that are large and individually distinct, with scales not overlapping or forming dense mats of squamae as in its congeners. Additionally, the apex of female tergite VIII is truncate, crenulate and sparsely set with short stout setae ( Fig. 20 ), whereas the apical margin of tergite VIII is smooth in its congeners.

Redescription. Adult habitus. Length 9.0 mm, width 3.8 mm. Integument black, antennae and tarsi reddish-brown; dorsum covered in densely distributed, large (visible under low magnification), individually distinct, circular prostrate scales; scales yellowish-brown, dorsal structure complex with thin, elevated rim-like margins and radial ridges on dorsal surface. Vestiture of dorsum sparse, forming small patches allowing cuticle to show through, resulting in slightly mottled appearance. Pleura, legs, and venter densely clothed in decumbent, elliptical scales, interspersed with longer semierect scales on legs. Head. Rostrum as long as pronotum; weakly arcuate; with abruptly raised process at apical one-fourth on ventral surface ( Fig. 11 ). Antennae inserted just beyond middle of rostrum; scape not reaching eye; club ovate, subequal in length to funicular articles 1 + 2. Thorax. Pronotum as broad as long; fine medial carina distinct for entire length of pronotal disk; shiny granules on lateral sides of pronotum large, closely approximated. Ceiling of prosternal canal and mesosternal receptacle glabrous, lateral margins and sides squamose. Mesosternal receptacle widely open. Scutellum small, subquadrate, strongly protruding. Elytra and pronotum strongly convex in lateral view. Granules on elytra regular, large, shiny, each bearing one long decumbent seta; humeri slightly produced but elytra not significantly wider than pronotum. Elytral punctures large, shallow; not obscured by squamae; each with single large scale at its center. Interval 3 with granulate process, elevated above other intervals at short distance from base and terminating at elytral declivity. Protibia with short, decumbent, hair-like setae on ventral margin. Hind femur only slightly exceeding elytral apices. Female terminalia. Tergite VIII longer than broad, posteriorly truncate, crenulate, with sparse, stout setae arising submarginally on ventral and dorsal surfaces ( Fig. 20 ). Sternite VIII with apical plate tapering at base ( Fig. 21 ).

Remarks. Examination of the syntypic series of this species revealed that the type series originally consisted of three closely related but distinct species. Two specimens (1 ♀, NHML, 1 Oi, DEI) are conspecific with N. tuberosus . One specimen (♀, SMTD) is designated below as the lectotype for N. tragopoides . The two remaining syntypes (1 ♀, 1 Oi, SMTD) belong to a new species described 212 below. All male associations mentioned here are tentative. Adding to the confusion, the type series of N. tragopoides was labeled in an unusual fashion, which has some bearing on the selection of a lectotype. Of the five type specimens examined, one is labeled ‘‘typus,’’ one is labeled ‘‘ paratypus,’’ two are labeled ‘‘ syntypus,’’ and one has both ‘‘paratypus’’ and ‘‘syntypus’’ labels affixed. The syntype labels do not appear to be in Heller’s handwriting and were possibly later additions. Following Article 73.2.1 and recommendation 73F of the International Code of Zoological Nomenclature (ICZN 1999), all specimens of the type series are to be considered syntypes. Since the syntypic series is comprised of specimens belonging to three different species, a lectotype must be designated to preserve nomenclatural stability and serve as the sole reference standard for the species. I have selected the unique female specimen labeled ‘‘typus’’ in Heller’s handwriting as the lectotype for the species. Unfortunately, no other member of the type series is conspecific with the lectotype.

Type material examined. Lectotype (new lectotype designation): 1 ♀. ‘‘ Java, Surbaja [Soerabaya in Heller’s description (1940: 103)]/4966/Typus, Cyamobolus tragopoides H.’’ [ SMTD; see N. tuberosus and N. zimmermani for other specimens previously attributed to this species]. One specimen, reported in Heller (1940) from Takoean collected by C. F. Drescher, was not found.

Figures

Figs. 10–13. Nothotragopus species, detail of head and rostrum, lateral view. 10) N. tuberosus female; 11) N. tragopoides, female; 12) N. zimmermani new species, female; 13) putative male of N. zimmermani.

Figs. 18–21. Female terminalia of Nothotragopus tragopoides. 18) spermatheca, lateral view; 19) hemisternites, dorsal view; 20) tergite VIII, dorsal view; 21) sternite VIII, ventral view. Left scale line for Figs. 18–20 5 0.5 mm; right scale line for Fig. 21 5 1.0 mm.