. Cooperative economic insect report. Beneficial insects; Insect pests. - 1077 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES ALMOND SCOLYTID (Scolytus amygdall Guerln) Economic Importance: Adults and larvae of this beetle cause severe damage to fruit trees by boring, tunneling, and feeding beneath the bark. A heavy infesta- tion of larvae can reduce the inner bark to powder. Numerous larval galleries are formed from each egg gallery made by the adults. The damage may cause death of the tree. Adults bore into twigs and tunnel into limbs. This injury is marked by the hardening of sap (gum) a
. Cooperative economic insect report. Beneficial insects; Insect pests. - 1077 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES ALMOND SCOLYTID (Scolytus amygdall Guerln) Economic Importance: Adults and larvae of this beetle cause severe damage to fruit trees by boring, tunneling, and feeding beneath the bark. A heavy infesta- tion of larvae can reduce the inner bark to powder. Numerous larval galleries are formed from each egg gallery made by the adults. The damage may cause death of the tree. Adults bore into twigs and tunnel into limbs. This injury is marked by the hardening of sap (gum) at the entrance holes. Diseased and weak- ened trees as well as healthy trees may be seriously damaged. Abandoned dead and dying trees are a breeding source for future infestations in other areas. Heavy damage has been recorded in Libya. Distribution: Afghanistan, Bulgaria, Cyprus, Egypt, France, Greece, India, Israel, Italy (Sicily and southern mainland), Lebanon, Libya, Morocco, Spain, Turkey, USSR (Caucasus and southern Ural Mountain areas), and West Pakistan. Also recorded from Central Asia. Hosts: Almond, apricot, plum, peach, cherry, other stone fruits; apple and _^^ S i U-A i_i ^^ i L-J i \ \ 1 ! \ I t U_i L^L^ / U-L I I i_i L^l I L. General Distribution of Scolytus amygdali Guerin Coleoptera:Scolytidae No. 175 of series. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
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