Bolothrips rachiphilus
Recognition data
Distinguishing features
Both sexes wingless. Body legs and antennae dark brown; major setae pale. Head longer than wide, projecting slightly in front of eyes, cheeks convex; eyes angular with straight external margins, narrowed and prolonged ventrally; postocular setae bluntly pointed, longer than dorsal length of eye; maxillary stylets broad, not retracted as far as postocular setae, wide apart and V-shaped. Antennae 8-segmented; segment III with two sensoria, IV with three sensoria; segment VIII slender but broad at base. Pronotum with four pairs of softly pointed major setae, anteromarginals small; epimeral sutures complete; basantra small, ferna transverse, mesopresternum degenerate. Fore tarsi with no tooth. Metanotum transverse, with one pair of long setae. Pelta broad, posterior margin eroded medially in male; tergites without sigmoid wing-retaining setae; tergite IX setae finely acute, almost as long as tube. Large male with fore femora stout, fore tibia with small lobe at inner apex, and fore tarsal tooth large.
Related and similar species
The genus Bolothrips comprises 16 species worldwide, almost all Holarctic, with two species from South Africa, one from Tristan da Cunha, and four from North America, of which only one is known from California (Mound and Palmer, 1983). B. rhachiphilus is similar in appearance to B. pratensis Hood from Texas, but is uniformly dark brown instead of bicolored (Mound, 1974).
Taxonomic data
Current valid name
Bolothrips rhachiphilus Cott
Original name and synonyms
Bolothrips rhachiphilus Cott, 1956: 181
Family placement
Phlaeothripidae, Idolothripinae
Biological data
Life history
Probably breeding at the base of grasses.
Host plants
Feeding by imbibing fungal spores.
Tospoviruses vectored
None
Crop damage
None
Distribution data
Area of origin
Western USA
Distribution
California