Xyleborus ferrugineus
Creators: name: Rabaglia, Robert J.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Stereocaulaceae
Xyleborus
Xyleborus ferrugineus

description: Xyleborus ferrugineus (Fabricius)   
(Figs. 1–2)  
 Bostrichus ferrugineus Fabricius, 1801:388; lectotype $, America meridionali, UZMC, Copenhagen, designated by Wood 1982:827.   
 Xyleborus fuscatus Eichhoff, 1868:400; holotype $, Carolina, Hamburg Museum, lost. Synonymy: Schedl 1960:8.   
 Xyleborus retusicollis Zimmermann, 1868:146; holotype $, Maryland, MCZ, Cambridge. Synonymy: Bright 1968:1312.   
 Xyleborus nyssae Hopkins, 1915:66; holotype $, South Carolina, USNM, Washington. Synonymy: Schedl 1960:9.   
 Xyleborus soltaui Hopkins, 1915:66; holotype $, Louisiana, USNM, Washington. Synonymy: Bright 1968:1312.   
 In addition to the above North American names, several others have been placed in synonymy by the following authors: Schedl (1941): insularis Sharp; Browne (1955): Tomicus trypanaeoides Wollaston; Schedl (1957): confusus Eichhoff; Schedl (1960): amplicollis Eichhoff, argentinensis Schedl, bispinatus Eichhoff, hopkinsi Beeson, notatus Eggers, schedli Eggers, subitus Schedl, tanganus Hagedorn; Wood (1989): rufopiceus Eggers; Beaver (1991): nesianus Beeson.   
 Description. Female: length 2.0– 3.3 mm, 2.8 times as long as wide; color reddish brown. Frons broadly convex; surface reticulate; punctures sparse, faintly impressed; longitudinal carina smooth, faintly elevated. Pronotum 1.2 times as long as wide; sides parallel; anterior margin broadly rounded, smooth; anterior slope with asperities numerous, not strongly elevated; posterior portion smooth, shining; punctures small, sparse, shallow. Elytra 1.8 times as long as wide; sides parallel on basal three-fourths, broadly rounded behind; disc occupying basal two-thirds; strial punctures impressed, in regular rows, usually moderate in size; interstriae smooth, shining, 1.0–1.5 times as wide as striae; interstrial punctures uniseriate, variable in size, sparse to obsolete (eastern North American specimens with punctures more numerous). Declivity relatively flat, steep; strial punctures distinct; interstriae 1 and 3 slightly elevated, interstriae 2 slightly impressed; interstriae 1 with one small denticle near base (denticle on right elytron offset in placement with that on left elytron), interstriae 3 with two denticles: denticle at base equal in size and placement to denticle on interstriae 1, also with one prominent denticle at middle of declivity; interstriae 4, 5 and 6 with several small denticles scattered along length of interstriae.   
Male (not examined description as in Bright, 1968): length 2.0– 2.3 mm, 2.5 times as long as wide. Frons broader, minutely reticulate and faintly punctured. Pronotum 1.2 times as long as wide; sides slightly arcuate; anterior margin drawn to an acute point anterior slope distinctly concave, asperities obsolete; posterior area shining, punctures small, faint. Elytra 1.5 times as long as wide, sides slightly arcuate, rather narrowly rounded behind; sculpture and vestiture resembling female. Declivity sloping, armature resembling female but teeth smaller.  
 Material examined. More than 100 specimens from the following localities (including holotypes of X. retusicollis Zimmermann, X. nyssae Hopkins and X. soltaui Hopkins and specimens of X. confusus Eichhoff, X. retusicollis. X. bispinatus Eichhoff, X. trypanaeoides Wollaston and X. fuscatus Eichhoff in the Eggers collection at the USNM): Africa: Cameroon, Uganda; South America: Brazil, Ecuador, Peru, St. Lucia; North America: United States: Alabama, Delaware, Florida, Georgia, Louisiana, Maryland, New Jersey, North Carolina, Ohio, South Carolina, Tennessee, Texas, Virginia, West Virginia; Pacific Islands: Hawaii.
description: Published as part of Rabaglia, Robert J., 2005, The Validity of Xyleborus impressus Eichhoff (Coleoptera: Curculionidae: Scolytinae) as Distinct from Xyleborus ferrugineus (Fabricius), pp. 261-266 in The Coleopterists Bulletin 59 (2) on pages 262-263, DOI: 10.1649/768, http://zenodo.org/record/10105092