Katamyurus Opitz, 1997

Opitz, Weston, 2008, Classification, natural history, and evolution of Epiphloeinae (Coleoptera: Cleridae). Part VII. The genera Hapsidopteris Opitz, Iontoclerus Opitz, Katamyurus Opitz, Megatrachys Opitz, Opitzia Nemésio, Pennasolis Opitz, new genus, Pericales Opitz, new genus, Pteroferus Opitz, new genus, and Turbophloeus Opitz, new genus, Zootaxa 1754, pp. 1-40 : 15-16

Katamyurus Opitz

Type species: Katamyurus paxillus Opitz, 1997: 60 . By original designation.

Diagnosis: Epiphloeine specimens belong to this genus if they show a narrow-oblong body form and very roughened elytral disc. The spring-like modification of the phallic apex is unique within the subfamily (figs. 53, 54).

Description: Size: Length 4.8–6.3 mm; width 1.2–1.8 mm. Form: Oblong narrow rectangulate; elytra a little more than three times longer than wide, posterolateral margin sharply curved towards elytral apex. Vestiture: Head, pronotum, and elytral disc vested profusely with dark setae, elytral disc with a few tufts of white setae, disc vested with primary (1º) setae and secondary (2º) setae, 1º setae stout, erect, and dark, 2º setae short, decumbent, and brown or white, latter may be matted into small tufts. Head (figs. 33–35): Cranium rugosely punctate; eyes bulgy (fig. 33), finely faceted, ocular notch (fig. 33) angle rounded at innermost point; antenna (figs. 38, 49) inserted at lower angle of eye incision, comprised of 10 antennomeres, loosely clubbed, scape as long as combined length of pedicel and antennomeres 3–4, scape curvate, funicular antennomeres subfiliform, 8 th and 9 th antennomeres triangular, 10 th antennomere oval; labrum (fig. 36) deeply incised; tormal processes horizontal and not welded; mandible (fig. 39) robust, dentes well developed, mandibular penicillus very small; maxillary (fig. 42) and labial (fig. 57) terminal palpomeres digitiform, laterolacinia present; frons not very wide; gular sutures strongly converging; gular pads (fig. 34) very small. Thorax: Pronotum (figs.40, 41, 44, 45, 48) oblong, lateral tubercle moderately developed, disc finely punctate, pronotal arch roughly punctate, anterior margin convex, posterior margin transverse, anterior transverse depression defined only at pronotal sides, disc of pronotal proper with elevations and depressions, smooth paralateral tumescences usually prominent, discal (fig. 51) and lateral (fig. 50) trichobothria prominent; pronotal projection (fig. 44) slightly extended to middle; lateral carina very brief, not extended to anterior margin of pronotum and posteriorly confluent with pronotal bead; procoxal cavities open; interprocoxal process linear (fig. 44), not laterally expanded distally; metendosternite (fig. 46) without furcal lamina; elytra narrow oblong rectangulate, epipleural margins subparallel then sharply becoming more rounded, then gradually converging towards sutural margin, epipleuron extended to elytral apex, punctations large, deeply set into disc and rendering disc subscabrous; metathoracic wing as in figures; mesoscutellum (fig. 37) quadrate; tibial spur formula 0-1-1, tarsal pulvilli formula 3-3-2, anterior margin of tibia spinous; tarsal claws with large basal denticle. Abdomen: Narrows to posterior, six visible sterna; pygidium transverse, sixth visible sternum incised distally in males, not incised in females. Male Genitalia (figs. 53-55): Aedeagus long and narrow; phallobasic rod present, linear, phallic plates narrow, modified at apex into spring-like extensions; spicular fork as in figure 47.

Distribution: The known distribution of this genus is from Guatemala to Colombia.

Evolutionary relationships: Katamyurus Opitz and Ellipotoma Spinola are believed to be sister taxa on the basis of the following shared synapotypic characteristics: eyes very large, cranium reduced, body form narrow oblong, and pronotum longer than wide.