Known only from the Californian type series, and three females from New York that may not be the same species (Nakahara, 1994: 70), this species has not been studied by the present authors.
The genus Thrips is the second largest genus in the Thysanoptera, and currently includes, worldwide, about 285 species. All members of the genus lack ocellar setae I on the head, and they all have ctenidia on tergite VIII posteromesad to the spiracles. Other characters, such as number of antennal segments, number of setae on the fore wing veins, and number of discal setae on the sternites are variable between species (Palmer, 1992; Mound & Masumoto, 2005). T. heraclei has been compared to several other North American members of the genus that have the body yellow (Nakahara, 1994: 69).
Thrips heraclei Moulton
Heracleum sphondylium and Angelica atropurpurea (Apiaceae)
Probably Western USA
California (New York?).