Explanation of Names
Scolytus schevyrewi Semenov 1902
Identification
The band can be dark to absent (Lee et al. 2006)
Range
Native to C. & E. Asia, adventive in NA, now widespread from Canada (ON-BC) to Mexico, but not known to occur in se. US
(1)(2)Food
hosts: Ulmus spp. (in the US, has attacked U. americana, U. thomasii, U. pumila, U. procera)
Life Cycle
In China where the biology is best known, produces 2-3 generations per year; overwinters as mature larvae or pupae (Lee et al. 2006)
Remarks
earliest record in our area: CO 1994
(3)
vector of Ophiostoma novo-ulmi, the fungal pathogen causing Dutch elm disease; when beetles are allowed to attack American elm bolts infected with Dutch elm disease, emerging beetles often carry the fungal spores. (Lee et al. 2006)
See Also
S. multistriatus lacks the band, is slightly smaller, has posteriolateral teeth on abdominal sternites 2-4 and the 2nd abdominal ventral spine more anteriorly placed (Lee, et al. 2006)
Print References
Cognato A.I. et al. (2010) The native and introduced bark and ambrosia beetles of Michigan (Curculionidae: Scolytinae). Great Lakes Entom. 42(3-4): 101-120.
