caa a22 4500 397547315 CHVBK 20180308164741.0 cr unu---uuuuu 161202e19960501xx s 000 0 eng 10.1093/aesa/89.3.328 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.3.328 Furniss Malcolm M. Division of Entomology, University of Idaho, Moscow, ID 83844-2339. Taxonomic Status of Dendroctonus punctatus and D. micans (Coleoptera: Scolytidae) [Elektronische Daten] [Malcolm M. Furniss] The taxonomic status of the North American boreal spruce beetle, Dendroctonus punctatus LeConte 1868, and its Eurasian counterpart, the European spruce beetle, D. micans Kugelann 1794, has been uncertain. Recent elucidation of the biology of the heretofore unstudied D. punctatus has provided an opportunity and incentive to discover and compare new anatomical characters. These anatomical differences support the retention of D. punctatus as a species distinct from D. micans. Larvae of D. punctatus differ uniformly from D. micans in having a sclerite on abdominal tergum 8, which is absent in D. micans. Adults of the 2 species differ discretely in the shape and setation of the epistomal process; presence or absence of a subcarinate line on the frons; punctures on the pronotum and metepisternum; the configuration of the metatibial denticles; the topography of the plectrum on male tergum 7; and the shape of the spiculum gastrale and genital capsule of male genitalia. The 2 species also differ significantly in their average body length and ratio of length to width (slenderness or stoutness), but these features overlap and are of less diagnostic value. Despite the discrete differences found in 10 anatomical characters, similarities in the biology of D. punctatus and D. micans, and zoogeographical evidence regarding other Holoarctic scolytid species, suggest that the ancestor of D. micans emigrated from North America rather recently, possibly by way of Beringia during the Wisconsinan glaciation. This circumstance provides unique evidence of the nature of and possible rate of anatomical change when populations of this economically important genus become separated. © 1996 Entomological Society of America Systematics nationallicence Scolytidae nationallicence Dendroctonus punctatus nationallicence Dendroctonus micans nationallicence taxonomy nationallicence Annals of the Entomological Society of America Oxford University Press 89/3(1996-05-01), 328-333 0013-8746 89:3<328 1996 89 aesa https://doi.org/10.1093/aesa/89.3.328 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.3.328 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Furniss Malcolm M. Division of Entomology, University of Idaho, Moscow, ID 83844-2339 NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/3(1996-05-01), 328-333 0013-8746 89:3<328 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford