01567nas a2200205   4500008004500000020001400045245013600059210006900195260001000264300001200274490000700286520077000293653003001063653002801093653002701121653002701148100003101175700002001206856013501226       2000                        Engldsh    a0013-874600aComparative anatomical and histological study of the alimentary canal if the Dendroctonus fontalis (Coleoptera: Scotylidae) complex0 aComparative anatomical and histological study of the alimentary   cMarch  a303-3110 v933 aIn this study we compared the anatomy and histology of the alimentary canal of Dentroctonus approximatus Dietz, D. mexicanus Hopkins, D. frontalis Zimmermann, and D. brevicomis LeConte. The results show that these species share similar characteristics, and their structural pattern is comparable to that observed in other Dendroctonus species. These 4 species have characteristics not found in other bark beetle genera in the esophagus, crop, proventriculus, and hindgut. The close relationship of the Malpighian tubules to posterior foregut, anterior midgut, and distal hindgut is also different. Additionally, the midgut of the D. frontalis complex species shows a great cellular diversity, which suggests that this region may be involved in pheromone production.10aDendroctonus approximatus10aDendroctonus brevicomis10aDendroctonus frontalis10aDendroctonus mexicanus1 aCisneros, Elba, Diaz Ramon1 aZuniga, Gerardo  uhttps://weevil.myspecies.info/comparative-anatomical-and-histological-study-alimentary-canal-if-dendroctonus-fontalis-coleoptera-s