Ibalia anceps adults have been captured from mid April to late July and, rarely, in early September (Smith and Schiff 2002). Their main flight period, from between early June to mid-July, is well ahead of the Tremex columba flight. The range is from Minnesota and Nova Scotia in the North to Colorado, Texas and Florida in the South (Liu and Nordlander 1992).

Ibalia arizonica is recorded from Arizona and New Mexico where conifers grow (Liu and Nordlander 1992). No other information is available.

Ibalia kirki is recorded from Arizona and New Mexico where conifers grow (Liu and Nordlander 1992). No other information is available.

Ibalia leucospoides adults have been captured from mid April to early October. The main flight period is from July to early October (Smith and Schiff 2002). The range is from Alaska and Nova Scotia in the North to California and Florida in the South, where conifers grow (Liu and Nordlander 1992). Flanders (1925) observed that horntails attack nearby Ibalia. The parasitoid biology was treated by Hanson (1939).

Ibalia montana adults have been captured in July (Kirk 1975). The range is from British Columbia and Montana in the North to California and New Mexico in the South (Liu and Nordlander 1992).

Ibalia ruficollis adults have been captured from mid July to early October. The main flight period is in August and September (Kirk 1975). The range is from Arizona and northern Mexico (Chihuahua) (Liu and Nordlander 1992).

Ibalia rufipes rufipes adults have been captured from early May to late July. The main flight period is all of July (Kirk 1975). The range is from Oregon and Quebec (it may occur across the boreal zone) in the North to California, Nevada, Arizona and Colorado in the South, where conifers grow (Liu and Nordlander 1992).

Schlettererius cinctipes adults have been captured from early June to early September. The main flight period is in July (Kirk 1975). The range is from southern British Columbia and Idaho in the North to California and Arizona in the South (Townes 1949, Aguiar and Johnson 2003). It has become established recently in eastern North America (Smith 1997). The biology was studied by Taylor (1967).