02405nas a2200193   4500008004100000020002500041245011400066210006900180260000800249300001200257490000800269520170000277653003001977100002002007700001602027700001602043700001902059856013302078       2011                        eng d  a0013-8746; 1938-290100aLife History, Development, and Rearing of Eucryptorrhynchus brandti (Coleoptera: Curculionidae) in Quarantine0 aLife History Development and Rearing of Eucryptorrhynchus brandt  cJul  a718-7250 v1043 aEucryptorrhynchus brandti (Harold) (Coleoptera: Curculionidae) was identified in China and studied in quarantine in the United States as a potential biological control agent for the invasive weed, tree of heaven, Ailanthus altissima (Mill.) Swingle (Sapindales: Simaroubaceae). Studies on its general biology and development, and the most efficacious rearing method were conducted. E. brandti is univoltine. The metathoracic sternite and first abdominal segment are convex in females and concave or flat in males. Females are larger than males. Female and male sagittal measurements averaged 11.50 [plus or minus] 0.14 ([plus or minus] SEM) and 10.35 [plus or minus] 0.09 mm, respectively. Transversal measurements averaged 4.22 [plus or minus] 0.06 and 3.73 [plus or minus] 0.05 mm for females and males, respectively. Mean weight of females and males were 0.10 [plus or minus] 0.003 and 0.07 [plus or minus] 0.002 g, respectively. Females lived longer than males, averaging 66.3 [plus or minus] 6.8 d and 46.5 [plus or minus] 7.3 d, respectively. The egg stage averaged 5.0 [plus or minus] 0.9 d, and the larval stage had six stadia and developed in 110 [plus or minus] 15.0 d; the pupal stage was 16 [plus or minus] 7.0 d at 25[degree]C. A method for rearing E. brandti on cut A. altissima billets under quarantine conditions was developed. The most efficient egg-to-adult rearing method involved caging 12 males and 12 females or 24 males and 24 females for 7 d on 23-92-cm-long billets. Duration up to 3 wk after cutting did not affect adult emergence. This information will facilitate laboratory rearing and conducting host specificity tests to determine agent impact on nontarget species.10aEucryptorrhynchus brandti1 aHerrick, N., J.1 aSalom, S.M.1 aKok, L., T.1 aMcAvoy, T., J.  uhttps://weevil.myspecies.info/life-history-development-and-rearing-eucryptorrhynchus-brandti-coleoptera-curculionidae-quarantine