Enoclerus citrinifrons Rifkind, n. sp.
Creators: name: Rifkind, Jacques
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cleridae
Enoclerus
Enoclerus citrinifrons

description: Enoclerus citrinifrons Rifkind, n. sp.
(Fig. 8)
Diagnosis. Among its congeners, E. citrinifrons is only similar to E. reductesignatus, from which it may be readily distinguished by the presence of rusty orange setation on the head and pronotal anterior margin (Fig. 8). The two species are apparently allopatric: E. citrinifrons has been collected in central and northwestern Costa Rica, while E. reductesignatus appears confined to central Panamá.
Description (holotype female (?)). Length: 11.5 mm. Color: black; scape and pedicel (in part) and antennal club, brown; each elytron with a cream colored macula at middle; macula rounded internally, where it is broadly interrupted well before suture, constricted laterally before lateral margin, which it attains. Head: antennae moderately long, terminal 3 antennomeres rather abruptly expanded into a distinct club; surface finely, densely, shallowly punctulate; frons and vertex moderately densely set with mostly short, reclinate and erect, rusty orange setae. Pronotum: a little broader than long, narrower than elytra at base; transverse impression distinct, broadly V– shaped at middle; integument densely, shallowly, finely granulate, rather densely clothed with short and moderately long, erect black setae, these imparting a somewhat velvety aspect, particularly on the anterior half; anterior margin with an inverted triangulate patch of rusty orange setae at middle; posterior slope with a small triangular patch of orange setae; pronotal collar and postero–lateral margin arrayed with some longer whitish setae. Scutellum: densely set with recumbent whitish setae. Elytra: elongate (about 2x as long as broad), subrectangulate; humeri well developed; sides slightly inflected at middle, arcuately rounded posteriorly to dehiscent, separately rounded apices; subbasal tumescences obsolete; disk subflattened above; apical slope rather gradual; surface shining, integument deeply, densely, irregularly and coarsely rugose–punctate anteriorly, rather sparsely, finely punctate at middle, and very finely, shallowly arenose posteriorly; vestiture moderately densely arrayed; black vestiture rather inconspicuous, composed of mostly short, suberect and erect setae with fewer longer, erect, more robust setae interspersed; anterior margin with a bisinuate band composed of short, reclinate, rather robust whitish setae, mixed with much longer, erect whitish setae; pale midelytral maculae moderately densely but inconspicuously set with mostly short, erect pale yellow setae; elytral posterior with a conspicuous, rather broad, oblique band on each side, composed of moderately long, reclinate whitish setae, band attaining elytral suture internally, complete to margins laterally. Mesosternum: posterior median process slightly elevated, notched at middle. Metasternum and metepisternum: densely covered with rather long, mostly reclinate whitish setae. Abdomen: surface shining, finely, rather sparsely punctulate, punctures giving rise to fine, suberect silvery setae of moderate length; visible sternite 5 with posterior margin rather broadly subtruncate; visible sternite 6 with posterior margin arcuate, slightly surpassed by visible tergite 6, which has the hind angles rounded, and the hind margin arcuate / subtruncate at middle.
Variation. The two paratypes have the elytral integument somewhat more coarsely punctate at middle. One paratype, presumably a male, has visible tergite 6 with the hind margin rather narrow and feebly emarginate.
Type specimens. Holotype: Costa Rica, Cartago Prov., Turrialba, CATIE, 28/29 May, 1984, F. Hovore, coll. (CASC). Paratypes: 1 (JNRC), Costa Rica, Guanacaste Prov., Maritza Sta. (ACG), 1800’, May 14–16, 1996, E. Giesbert, coll.; 1 (MUCR), Costa Rica, Guanacaste Prov., Est. Las Pailas, P. N. Rincón de la Vieja, 800 m, 17–23 Jul 1993, K. Taylor, LN 306300__388600, #2238, INBIO CRI001, 133286.
Distribution. Central and northwestern Costa Rica, between 549 m and 800 m elevation. Etymology. The specific name refers to the distinctive patch of orange colored setae adorning the new species’ head.
description: Published as part of Rifkind, Jacques, 2017, New species of Mutillid Mimicking Enoclerus Gahan (Coleoptera: Cleridae: Clerinae) from Mexico and Central America, pp. 409-420 in Zootaxa 4231 (3) on pages 416-418, DOI: 10.11646/zootaxa.4231.3.7, http://zenodo.org/record/291315