Five species are currently placed in this family,
in four genera (Mound & Marullo 1999). Ropotamothrips
includes two species from southern Europe, Fauriella
and Opisthothrips each include
a single species from South Africa, and Parrellathrips
ullmanae is known only from the desert area of California.
The character states of these species form a confusing pattern, such
that the species seem to be intermediate in structure between the
Mound & Marullo
Available names: Original name Parrellathrips
ullmanae Mound & Marullo, 1999.
Biology: Described as breeding in the flowers of the shrub
Garrya vealchii (Garryaceae).
Recognition: Body colour mainly light brown, antennal segment
III and tasi yellow, forewing lightly shaded. Antennae 9-segmented,
all segments clearly distinct from each other; segments III-VIII with
rings of microtrichia, III-IV with one subterminal transverse sensory
area, VIII shorter than VII. Head with one pair of prominent postocular
setae, eyes not prolonged ventrally; tentorial bridge well-developed;
mouth cone extending between fore coxae, maxillary palps with 3 segments.
Pronotum slightly wider at posterior than anterior, marginal setae
no more than twice as long as discal setae. Mesonotum without setae
medially. Metanotum reticulate, median setae near posterior of sclerite.
Tarsi 2-segmented, fore tarsi with sharply recurved hamus not reaching
a stout seta at its apex. Forewing with apex pointed, posterior cilia
slightly undulated; costa with long cilia between the setae. Median
tergites with median pair of setae half length of tergite; tergite
VIII without marginal comb; pleurotergites with one pair of discal
setae; sternites without discal setae; ovipositor extending beyond
apex of abdomen.
Related species: There is only one species in this genus.
Generic relationships: The Californian genus Parrellathrips
is one of four genera in the family Fauriellidae.
Two of these genera are known only from south-western Africa, and
the third from southern Europe. These thrips are intermediate in structure
between the Merothripidae and the Thripidae.