reported artificial rearing of a cerambycid borer, Plagiohammus spini- 

 pennis Thomson. 



This note is a report on artificially rearing small numbers of 10 species 

 of insects that breed in the inner bark or wood of dead, dying, or living 

 trees. 



Materials and Methods 



Adult beetles used for oviposition were obtained in the following 

 manner. Neoclytus caprea Say, which were overwintering as adults just 

 beneath the bark of white ash logs {Fraxinus americana L.) were care- 

 fully pulled from their tunnels with forceps. The rustic borer, Xylotrechus 

 colonus (F.); red-headed ash borer, Neoclytus acuminatus (F.); painted 

 hickory borer, Megacyllene caryae (Gahan) ; hackberry engraver, Scolytus 

 muttcus Say; and Chion ductus (Drury) were collected during the sum- 

 mer months from outdoor emergence cages containing logs of Ulmus 

 americana L., Gleditsia tricanthos L., and Carya species. Locust borer 

 adults, Megacyllene robiniae (Forster), were collected in late summer on 

 goldenrod flowers. 



Adults of the cerambycid species, with the exception of C. cinctus, 

 readily mated and oviposited eggs under 1/^-inch black bias type wrapped 

 in a spiral around fresh 1 by 8 inch bolts of wood of their host species. 

 C. cinctus produced only a small number of eggs. This technique was 

 reported previously by WoUerman et al. (1969). After oviposition 

 occurred, the bias tape was removed and placed along with the bolts of 

 wood in uncovered l^-gallon ice cream cartons until the eggs hatched 

 and the larvae dropped to the bottom of the carton. 



Adults of S. muticus were placed on freshly-cut honeylocust bolts ap- 

 proximately 5 by 12 inches. At the end of nine days, the eggs were care- 

 fully dissected from the egg galleries and held in a petri dish until they 

 hatched. 



Orthotomicus caelatus (Eichhoff) beetles were found attacking dying 

 white pine {Finns strobus L.), and Leperisinus aculeatus Say were found 

 in late spring attacking logs and branches of freshly cut white ash. Eggs 

 of these species were dissected from field-collected wood and were held 

 on moistened filter paper in a petri dish sealed with masking tape until 

 hatched. 



Eggs of Romaleum rufulum (Hold.) were provided by C. John Hay, 

 insect ecologist at our Laboratory at Delaware, Ohio. 



Newly hatched larvae of the various species were placed in one of two 



2 



