Neolasioptera eregeroni [induces] an inflorescence gall [specifically] a smaller, harder gall [than N. erigerontis] on branches of the inflorescence [of Erigeron canadensis. The gall] appears ..., in fall, is monothalamous and usually about 10 mm long by 5 mm in diameter.
[Below is a less truncated version of the above quotation]
Two different kinds of stem galls occur on this host : a large, more or less soft, pithy gall near the base of or midway up the stem and a smaller, harder gall on branches of the inflorescence... [The second] appears much later, in fall, is monothalamous and usually about 10 mm long by 5 mm in diameter...Larvae from the two kinds of galls show a few minor differences, but adults have not been reared from the inflorescence gall. If the two galls are shown to be made by two separate species, Brodie's name, N. eregeroni , would be available for the inflorescence gall. Brodie wrote that some larvae escaped from the galls, which is not known in Neolasioptera , but the adults he reared do belong to Neolasioptera . Host : C. canadensis . Distr.: Massachusetts to Ontario, south to Maryland, and Nebraska and California.
[Note: See Brodie's publication for more notes; it is actually unclear from his publication whether he reared adult midges from the lower, larger galls or the upper, smaller galls. The adults emerged from late May to early June. His published notes indicate a mixed collection, possibly including galls from the previous year's inflorescences.]
Read more...
License:
All Rights Reserved