Subject: Identification help please!
Location: Raymond NH
July 23, 2016 6:58 am
Hi, I was in my yard last night and this interesting beetle landed beside me.
I was wondering if you might have an idea as to who my visitor was!
Along with its relative the Banded Alder Borer, we find the Sugar Maple Borer, Glycobius speciosus, to be one of North America’s most beautiful native beetles. BugGuide notes: “Larvae mine under bark of living Sugar Maple, Acer saccharum” and that the species is “rare” which probably explains the scarcity of submissions of this gorgeous beetle to our site. According to the USDA Forest Service Northeastern Area site: “The sugar maple borer, Glycobius speciosus (Say), a long-horned wood boring beetle, is a common pest of sugar maple (the only known host) throughout the range of the tree. Although borer-caused mortality is rare, infestations lead to value loss through lumber defect caused by larval galleries, discoloration, decay, and twisted grain.” According to the Cornell Sugar Maple Research& Extension Program: “Damage by the sugar maple borer (Glycobius speciosus) varies among forest types and stands within a type. Infestation rates, the proportion of damages stems per acre or hectare, range from less than 5 to nearly 50 percent. Sugar maples in all stands are susceptible, but the incidence of damage is highest in stands with high proportion of sugar maple. Rarely does sugar maple borer kill a tree, but it directly affects the main part of the stem, sometimes reducing the available space for tapping. Borer attack is most prevalent on trees of low vigor.” While this is just our opinion, in reading that information and the information contained in the New York State Department of Environmental Conservation pdf, we conclude that because the Sugar Maple Borer is rare, it is not a threat to the general population of Sugar Maple trees, but that the beetle does take advantage of already stressed trees, and in doing so, the general health of the Sugar Maple population is ensured.
Thank you so much for your reply! I love your site and use it all the time when I have a new bug friend in my life.
Again, thank you for your continued services!