Setosicornia curacaoae ( Gilmour, 1968 ) Telnov, 2024

Telnov, Dmitry, 2024, On the taxonomy of some South American and Australo-Pacific Anthicidae Latreille, 1819 (Coleoptera) with new subfamily and tribe-rank synonymies, Zootaxa 5501 (3), pp. 401-424 : 418-422

Setosicornia curacaoae ( Gilmour, 1968) comb. nov. ( Figs 7‒9 )

Gilmour (1968: 84, 85, 103‒103, pl. 10 fig. 3), as Atenizoides curaçaoae .

Type material examined. Holotype ♂ BMNH: Curaçao [handwritten] leg. R.H.Cobben [printed] Carmabi Mrt. [handwritten] 195 [printed] 7 [handwritten] [label black framed] // p [handwritten, text red] // HOLOTYPE [printed] ♂ [handwritten] [label red] // HOLOTYPE ♂ Atenizoides mihi curacaoae mihi [handwritten] Det. ‒ E.F. Gilmour [printed] [black frame on top and bottom of the label] // Repin # [printed] 831 10. 1. 2001 [handwritten] R. MASH [printed] [label yellowish] // BMNH {E} 2002‒157 Dincaster Museum and Art Gallery [printed] // NHMUK014663463 [printed, provided with a QR code] [the antennomeres 10‒11 of the left and 4‒11 of the right antenna, both terminal maxillary palpomeres, the right anterior and posterior leg and the left metatarsomeres 3‒4 missing]. Original designation as holotype ( Gilmour 1968). The male paratype in the Netherland’s ‘Laboratorium voor Entomologie, Wageningen’ ( Gilmour, 1968) has not been studied.

Redescription. Holotype male ( Figs 7‒9 ). Total body length 7.2 mm; head length 1.4 mm (not counting the exposed cranial ‘neck’ of the holotype), head width across compound eyes 1.2 mm, pronotal length 1.4 mm, maximum pronotal width nearly 1.1 mm, elytral length 4.4 mm, combined maximum elytral width 1.6 mm. Dorsum and venter pale brown. Head subopaque dorsally, moderately glossy ventrally, elliptical, narrowed and slightly prolonged anteriorly. Frontoclypeal suture or impression not observed. Clypeus broadly rounded at anterior margin. Labrum small and narrow (exposed part), emarginate at anterior margin, mandibles exposed. Mandible protruding anteriorly, apex unidentate, tapered (narrowly scooped). Frons very narrow, about 0.4× as wide as dorsal eye length. Compound eye very large, nearly holoptic, strongly protruding from lateral and dorsal outline of head, anterior margin broadly emarginate. Interfacetal setae moderately long and dense, curved. Postocular area very short, head base subtruncate. Head dorsal punctures irregularly shaped (generally elongate), annular to subannular, dense, shallow, with microscopically corrugate background. Intervening spaces smooth, much narrower than punctures. Head dorsal setae variably long, white, generally curved, subdecumbent to erect, dense, not fully concealing dorsal surface of head. Antenna very long and slender and strongly filiform, extending slightly beyond elytral apex when directed posteriorly. All antennomeres available for study with long erect to suberect (mainly on antennomeres 1‒2) setae. Basal antennomere elongate, about 3.7× as long as strongly shortened, slightly transverse antennomere two. Antennomere three about 4× as long as antennomere two. Antennomere four about 1.8× as long as antennomere three, barely shorter than antennomere five. Antennomeres five to nine becomes each gradually longer than preceding: antennomere eight about 1.1× as long as antennomere seven, antennomere nine about 1.05× as long as antennomere eight. Two terminal antennomeres not present for the study. Terminal maxillary palpomere not present for the study. Cranial ‘neck’ wide, about 0.5‒0.6× head width across compound eyes (e.g., half or more as wide as head). Pronotum subopaque dorsally, slightly longer than wide, flattened in dorsal aspect, narrower than head across compound eyes, maximum width in anterior half, lateral margins slightly emarginate posterior to middle. Anterior dorsal flange of pronotum distinct; ventrally and laterally only a narrow anterior collar is present. Suture of anterior flange incision-like deep and narrow laterally, comparatively shallower and broader dorsally. Basal pronotal margin dorsally with a narrow sulcus which widens on lateral margins. Vague median longitudinal impunctate (glossy) sulcus present on anterior half of pronotal disc. Dorsal surface of pronotum with strongly elongate flat punctures (in anterior part and laterally) and irregular narrow rugules (dorsally in posterior part). Intervening spaces glossy, irregularly corrugate, strongly narrower than punctures. Pronotal dorsal setation white, dense, subdecumbent, in part curved, effectively concealing dorsal sculpture of pronotum. Tactile setae not observed. Scutellar shield small, narrow, narrowly rounded at posterior margin, very densely punctate, subopaque. Elytron strongly elongate, slightly glossy, gradually narrowing posteriorly. Humerus broadly rounded. Postbasal transverse impression not indicated. Elytral punctures elliptical, dense and deep. Intervening spaces glossy to microstrigose, narrower than to about as wide as punctures. Elytral setation white, long and dense, in part curved, subdecumbent, directed posteriorly, effectively concealing dorsal sculpture of elytron. Some setae situated closer together than other, building an inconspicuous, white-maculate pattern on elytron. Tactile setae sparse. Sutural stria not present. Epipleuron very narrow, extending towards nearly elytron apex. Metathoracic wing fully developed (functional). Legs very long and slender. Femora thickened, meso- and metafemur somewhat clavate. Tibia straight, very slender, with distinct small spines (mainly in posterior half). Setation on tibiae longer and stronger erect compared to that on femora. Tibial terminal spurs paired, long, margins smooth, apically tapered (pro- and mesotibial spurs) to somewhat rounded (metatibial spurs). Tarsomeres of all legs strongly elongate, penultimate tarsomere somewhat shorter, not bilobate. All pretarsal claws simple, each slightly angulate ventrally at base. Male tergite VII subtruncate at posterior margin ( Fig. 9A ). Male morphological sternite VII broadly emarginate at posterior margin ( Fig. 9B ). Male tergite VIII broadly rounded at posterior margin, long setose ( Fig. 9C ), morphological sternite VIII subtruncate at posterior margin, laterally with a few long setae ( Fig. 9D ), sternite IX Y-shaped, lateral struts identifiable throughout their membrane-like fusion line until the anterior margin of the sternite ( Fig. 9E ). Aedeagus ( Fig. 9F–I ) long and slender. Tegmen elongate, nearly parallel-sided, constricted in apical part, apically rounded; basale slightly less than half as long as apicale, lateral margin with a few small spinules at about midlength of an apicale. Median lobe elongate, slender, with moderately long, rather wide basal struts, lateral margins expanded and inverted laterodorsally, with large, posterolaterad-pointed lateral spines, apex discontinued medially in dorsal view, gonopore armature distinct, of numerous spinules ( Fig. 9F–G ).

Sexual dimorphism. Female is unknown.

Differential diagnosis. See previous species.

Ecology. Unknown.

Distribution. Known only from Curacao, Netherlands Antilles.

Figures

FIGURE 7. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂. A—Habitus, dorsal view; B—ditto, anterodorsal view [not to scale].

FIGURE 8. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂, forebody.A—Head, pro- and mesothorax, ventral view; B—ditto, latero-ventral view; B—Pronotum and mesothorax, lateral view [not to scale].

FIGURE 9. Setosicornia curacaoae (Gilmour, 1968) comb. nov., holotype ♂, terminalia and genitalia. A—Tergite VII, dorsal view; B—Morphological sternite VII, ventral view; C—Tergite VIII, dorsal view; D—Morphological sternite VIII, ventral view; E—Morphological sternite IX; F—Aedeagus, median lobe; G—ditto, apex; H—Aedeagus, tegmen; I—ditto, apex [not to scale].