
This species has not been studied by the present authors, but see Cott, 1956: 159-162.
Judging from the redescriptions by Cott (1956), H. costano and H. lissonotus have the mid and hind tarsi paler than the tibiae, as in H. armiger, but have the fore wing shaded not pale as in that species. The metanotum of H. costano is reticulate. Over 100 species are listed in the genus Hoplandrothrips, of which more than 20 are described from North America, including five from California. Stannard (1968) provided a key to seven species from Illinois, and Mound & Marullo (1996) a key to 18 Neotropical species. Species concepts within this, and several other, genera of fungus-feeding thrips remain unclear, due to structural variation involving allometric growth patterns in one or both sexes.
Breeding on dead branches, and feeding on unidentified fungal hyphae, particularly on willow (Salix).
Recorded from California, Oregon, and Nevada.
PHLAEOTHRIPIDAE, PHLAEOTHRIPINAE
Cott HE (1956) Systematics of the suborder Tubulifera (Thysanoptera) in California. University of California, Berkeley, Publications in Entomology 13: 1–216.
Mound LA & Marullo R (1996) The Thrips of Central and South America: An Introduction. Memoirs on Entomology, International 6: 1–488.
Stannard LJ (1968) The Thrips, or Thysanoptera, of Illinois. Bulletin of the Illinois Natural History Survey 29: 213–552.