Body larger (6-7mm), elongate, somewhat cylindrical. Surfaces opaqueopaque:
without any surface luster.
, very dark in color (dark brown to black). Antennaeantennae:
paired, segmental appendages, borne one on each side of head, functioning as sense organs and bearing a large number of sensilla.
11-segmented with a 2-segmented club (club may appear 3-segmented due to slightly enlarged antennomereantennomere:
antennal segment; including scape, pedicel and flagellomeres. NOTE: the flagellum is composed of all antennal segments proceeding the scape and pedicel. Any individual antennal segment is commonly called an antennomere.
9). Antennal setation sparse. Subantennal groovessubantennal groove:
groove or concavity lying below the antennal insertion and housing the base of the antenna. Placed between the eye (if present) and the mandibular articulation, and sometimes extends below or behind the eye.
present, wide, longer than eyes. Eyes small, round, well-developed, finely faceted. Eyes deeply emarginateemarginate:
notched at the margin.
anteriorly by projection of fronsfrons:
the area between the eyes and just behind the frontoclypeal suture. In Coleoptera it is not or only rarely separated from the vertex posteriorly.
, forming a distinct canthuscanthus:
a sclerotized bar encroaching on the eye.
. Pronotal discpronotal disc:
the area of the pronotum which is visible dorsally and usually delimited laterally by the two lateral carinae. Contrasted with the paired pronotal hypomera, which extend onto the ventral surface.
convex, with a pattern of sinuate carinaecarina:
an elevated ridge or keel, not necessarily high or acute.
. Pronotal lateral margins widest anteriorly, distinctly explanateexplanate:
spread out and flattened; applied to a margin.
. Procoxal cavitiesprocoxal cavities:
external closure: Externally closed when the postcoxal processes of the hypomera meet the prosternal process or meet one another.
open. Metacoxaemetacoxae:
the coxae of the metathorax.
narrowly separated, separation less than metacoxal length. Elytraelytron:
the fore wing in Coleoptera, which is more or less uniformly sclerotized and in resting position is longitudinally oriented, usually meeting the opposite elytron along the midline.
with irregularly shaped, blunt carinaecarina:
an elevated ridge or keel, not necessarily high or acute.
and several small tuberclestubercle:
a small knoblike or rounded protuberance.
near apicalapical:
an adjective (or adverb) denoting position near or movement toward the apex of a body part. The apex of the head or pronotum is at the anterior end while that of the abdomen or an elytron is at the posterior end; on the legs or antennae, apical and distal are synonymous.
declivity. Tarsal formulatarsal formula:
the number of tarsomeres on the fore, mid, and hind tarsi, respectively.
4–4–4. Dorsal surface sparsely pubescentpubescent:
downy; clothed with soft, short, fine, loosely set hair.
, composed of short, curved, thin setaeseta:
a sclerotized, hairlike (or scalelike) projection of cuticula arising from a single trichogen cell and surrounded at the base by a small cuticular ring.
. Body usually encrusted with dirt or debris.
The genus Denophoelus is superficially similar in general appearance to Phloeonemus and Acolobicus but is immediately distinguished by the larger body size, sculpturing of the pronotumpronotum:
dorsal portion of the pronotum, lying above the lateral pronotal carinae when these are present.
and elytraelytron:
the fore wing in Coleoptera, which is more or less uniformly sclerotized and in resting position is longitudinally oriented, usually meeting the opposite elytron along the midline.
, and distribution.
Denophoelus nosodermoides (Horn, 1878Horn, 1878:
Horn, G.H. 1878. Synopsis of the Colydiidae of the United States. Proceedings of the American Philosophical Society, 17: 555-592.)
Northwestern (Southern OR), Southwestern (Northern CA) USA.
Denophoelus nosodermoides has been collected under loose bark and around the stumps of dead conifers.
Abundance: Moderately common locally.
Horn (1878)Horn (1878):
Horn, G.H. 1878. Synopsis of the Colydiidae of the United States. Proceedings of the American Philosophical Society, 17: 555-592., Ivie (2002a)Ivie (2002a):
Ivie, M.A. 2002a. 127. Colydiidae, pp. 445-453 In: R. H. Arnett, Jr., Jr. and M. C. Thomas (eds.), American Beetles. CRC Press, Gainesville, Florida., Stephan (1989)Stephan (1989):
Stephan, K.H. 1989. The Bothrideridae and Colydiidae of America north of Mexico (Coleoptera: Clavicornia and Heteromera). Occasional Papers of the Florida State Collection of Arthropods, 6: xii + 65 pp.
Authors: Lord NP, Nearns EH, Miller KB. 2011–2015.
Content updated Apr 2015; taxonomy updated Feb 2026
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