. Bulletin. Natural history; Natural history. :-f64 Illinois History Bulletin Vol. 29, Art. 4. Fig 1^8.—Taeniothrips pulgatissimus, head and prothorax. From O'Neill & Bigelow (1964). VII with a small oval glandular area (Fig. 133). Abdominal tergite VIII without posterior comb of setae. Seemingly this is a species with an enormous natural range. It has been found in northern, western, and mid- dle Europe (Priesner 19266) and m much of temperate North America. As might be expected in a species of extensive distribution throughout which it is subjected to varied ecologi- cal
. Bulletin. Natural history; Natural history. :-f64 Illinois History Bulletin Vol. 29, Art. 4. Fig 1^8.—Taeniothrips pulgatissimus, head and prothorax. From O'Neill & Bigelow (1964). VII with a small oval glandular area (Fig. 133). Abdominal tergite VIII without posterior comb of setae. Seemingly this is a species with an enormous natural range. It has been found in northern, western, and mid- dle Europe (Priesner 19266) and m much of temperate North America. As might be expected in a species of extensive distribution throughout which it is subjected to varied ecologi- cal conditions, there are considerable interpopulation differences. In par- ticular the lengths of certain setae and the size of the male glandular areas often vary between populations. Yet, it seems certain that all of these popu- lations belong to imlgatissimus, per- haps in some cases as racial or even subspecific segregates. In Illinois vulgatissimus becomes abundant solely "on Heracleum, its principal host plant. In Europe, too, Heracleum is a favorite host. I have for comparison many specimens collected by Dr. H. H. Ross from Heracleum that was growing in an English garden. Both the English and the Illinois speci- mens appear to be the same species. Illinois records.—Cook County: Golf (Harm's Woods), June 17, 1949, Ross, Tietz, Stannard, on Heracleum, many specimens; Western Springs (Warren Harding Woods), June 16, 1949, Ross, Stannard, on Heracleum, 3 9 . Lake County: Waukegan, June 18, 1951, Ross, Richards, Stannard, on flowers of Heracleum, 6 9,1 cf. Winnebago County: Shirland, July 29, 1953, Stannard, in woods, 1 9 . Thrips Linneaus Thrips Linneaus (1758:457). Type- species by subsequent designation by Curtis (1839).—T/irips phijsapus Linneaus. Valid designation. Type- species by subsequent designation by Westwood (1839).—Tferips phijs- apus Linneaus. Unnecessary desig- nation, previously designated by Curtis. Physapus DeGeer (1773:6).—Name used in subordi
Size: 1509px × 1656px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
