Body largely yellow, head and abdominal segment X brown; antennal segments VI–VIII extensively brown; fore wing slightly shaded. Head without distinct sculpture, strongly produced in front of eyes; vertex with three pairs of setae. Antennae 8-segmented, III & IV each with a simple sense cone; antennal segment I enlarged, II asymmetric with external lateral margin strongly produced. Pronotum trapezoidal, reticulate; no conspicuous posteroangular setae; setae on anterior margin not distinctly longer than discal setae. Meso and metathoracic endofurca weakly developed, without spinula. Fore coxae enlarged. Metanotum reticulate medially, with paired campaniform sensilla; two pairs of conspicuous setae, median pair arising behind anterior margin. Tarsi 2-segmented. Fore wing first and second veins with few and sparse setae. Abdominal tergites reticulate; II–VIII with paired median setae wide apart; VIII with lobed craspedum. Sternites without discal setae or craspeda; three pairs of long posteromarginal setae; ovipositor unusually small. Female macropterous and male apterous.
Male slightly paler than female and not so bicoloured; ocelli and wings absent; metanotum rectangular; large circular pore plates on abdominal sternites III–VII.
Intraspecific variation
Not recorded.
Genus and similar species information
The New World genus Arorathrips includes about 15 species, all of them having antennal segment II strongly asymmetric, and segments III & IV with simple sense cones. It is closely related to Chirothrips but differs in having the mesothoracic endofurca reduced. Arorathrips xanthiuscan be distinguished from the other Arorathrips species by the body colour and the head strongly produced in front of eyes.
World distribution
Described from Panamá, it is also recorded from Argentina and Brazil.
Mound LA & Marullo R (1996) The Thrips of Central and South America: An Introduction. Memoirs on Entomology, International 6: 1–488.
Nakahara S & Foottit RG (2012) Review of Chirothrips and related genera (Thysanoptera: Thripidae) of the Americas, with descriptions of one new genus and four new species. Zootaxa 3251: 1–29.
Published in: 23/12/2016 Posted by: Mariana Lindner
