Gerry did a little more digging and sent me an email below. I agree with his comments completely. If anyone wants the article, email me.
"I did a little more digging and turned up an old article (attached) that indicates that the chigger species, the larvae of which can bite humans, has been reported from NJ. The Ewing article has the following sentence: “Toward the northern limits of its range the species occurs only in isolated ‘islands’ where the local conditions are favorable for its maintenance.” It also cites that a single specimen was collected from Pemberton but doesn’t indicate its place of deposition. The scientific name used by Ewing was Trombicula tlalzahuatl. More current literature indicates the common problematic species goes by the name Eutrombicula alfreddugesi, the species named for French-born, Mexican physician and naturalist Alfredo Dugès (if I were Dugès I would be pissed that a nasty chigger was named after me). The Rutgers Pinelands Station is studying this species but it is related to
ectoparasitism of Eastern fence lizards. I also found this statement (U.S. Army Corps of Engineers. 1962. Report on the Comprehensive Survey of the Water Resources of the Delaware River Basin. Vol. VI. Appendix L. Insects of Public Health Importance: 12): “Chiggers (Eutrombicula alfreddugesi) are uncommon in the Delaware Basin. These mites or ‘red bugs,’ are known to occur in Sussex Co., Delaware, and in Atlantic Co., New Jersey.”
I think the experiences of you, me, and the mite guy I talked to at the Rutgers Pinelands station back in the 1980s make clear that the vast, vast majority of “chigger doses” people get in South Jersey are caused by tick larvae. These observations are bolstered by the reports from the scientists in Long Island and the comments by Ewing (1923) and the Army Corps (1962). Cheers, Gerry"