Premnobius cavipennis Eichhoff, 1878

Atkinson, Thomas H., Flechtmann, Carlos A. H. & Petrov, Alexander V., 2023, Synopsis of the Neotropical Premnobiina (Coleoptera: Curculonidae: Scolytinae Ipini) with descriptions of new species, new synonymy and keys to species, Zootaxa 5249 (1), pp. 69-91 : 76

Premnobius cavipennis Eichhoff

Fig. 5 E, F

Premnobius cavipennis Eichhoff, 1878: 404 .

Xyleborus industrius Sampson, 1912: 249 . Synonymy: Schedl 1963: 538.

Xyleborus xylocranellus Schedl, 1931: 344 . Synonymy: Browne 1961: 50.

Premnobius bituberculatus Eggers, 1932: 35 . Synonymy: Schedl 1963: 538.

Premnobius latior Eggers, 1933: 35 . Synonymy: Wood 1967: 210.

Similar species. Among the species found in the Americas, this most closely resembles P. ambitiosus .

Diagnosis. Length 2.3–2.8 mm, 3.3 as long as wide ( Wood 2007: 368). Frons granulate, punctate, vestiture sparse. Anterior margin of pronotum rounded, unarmed. Pronotum about half as long as elytra, summit slightly anterior to middle, anterior asperities short, abundant. Disc shining, with shallow widely spaced puncture; short, semi-recumbent setae. Elytral striae not impressed; interstriae 3 as wide as striae; interstrial setae confused to base, length shorter than interstrial width, slightly more abundant near declivity. Declivity occupying posterior 25% of elytral with a nearly complete circumdeclivital elevated crest, granulate along crest, none notably larger than others. Face of declivity concave, strial and interstrial punctures much larger than those on disc, confused, some along sutural interstriae granulate; some setae present, notably along suture.

Distribution. Introduced from the Afrotropical region. It is widely distributed in most tropical and subtropical regions of the Americas ( Fig. 12A ). It is commonly collected in light traps and flight intercept traps baited with ethanol.

Figures

FIGURE 5. Dorsaland posterolateral views of declivities of Neotropicalspecies of Premnobius, part 2.A,B. P.browneiAtkinson & Flechtmann; C,D. P. ambitiosus (Schaufuss); E,F. P. cavipennis Eichhoff. Photographs by T.H. Atkinson.

FIGURE 12. Known localities for Neotropical species of Premnobiina. A. Premnobius cavipennis; B. Premnobius ambitiosus; C. Premnobius perezdelacrucei; D. Premnobius species.; E,F. Premnophilus species. Species are grouped only to avoid overlap of collection localities on maps. No ecological or systematic relationships are implied.