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 Merothripidae, Melanthripidae and Thripidae.

Parrellathrips ullmanae Mound & Marullo

Available names: Original name Parrellathrips ullmanae Mound & Marullo, 1999.

Biology: Described as breeding in the flowers of the shrub Garrya vealchii (Garryaceae).

Distribution: California

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.


Parrellathrips ullmanae

Antennal segments II-V