CRVPTOTHRIPS DENTIPES, 



A Genus and Species of Thysanoptera new to the 



British Isi.es. 



by richard s. bagnael, f.k.s. 



Family PHLGEOTHRIPID^, Uzel. 



Genus CRVPTOTHRIPS, Uzel. 

 Cryptothrlps dentipes Reuter^. 

 iSSo. P/i/ceo^/ifips de/i^i/>es, Renter, Bidrag till Kannedom af Fintands och 



Folk, xl. , p. 12. 

 1S95. Cryptothrips dentipes Uzel, Monographie der Orditiing Thysanoptera 



pi. iv.. figs. 31 ^ZZ- pi vii., fig. J27, 



p. 234. 

 1S99. Cryptothrips dentipes Reuter, Acta Soc.pro Fauna et Flora Fennica^ 



xvii.. No. 2, p. 23. 



On September the 4th and 6tli of last 3'ear, I was very- 

 pleased to find Cryptothrips de^itipes (Rent.) at Portmarnock, 

 where it occurred, in all stageSj on a spiky rush {[tincus 

 7naritimus) v/hich grows profusely at the edges of the salt- 

 marsh. My attention was first attracted by a red tubuliferous 

 larva which, living as it did on the Juncus, I considered could 

 not be that oi Anthothrips statices (Hal,), but it was only after 

 an hour's hard work, during which my hands and arms were 

 torn most fearfully, that I found the perfect insect. It is the 

 largest species of the genus, and also one of the largest 

 European forms, my specimens measuring from 2*4 to 3-0 

 millimetres. When further attention is given to the stud^^ of 

 this interesting order of insects, other species of Cryptothrips 

 will, without doubt, be added to our fauna. The known species 

 occur in various flowers, on grasses, under bark of certain 

 trees, and in moss and turf. 



Ireeand. — Both sexes of the apterous forms, as well as the 

 different larv^al and pupal stages, on Juncus maritimus, Port- 

 marnock saltmarsh, near Dublin, September, 1908 C. 

 dentipes also occurs in moss and turf, and is recorded b}^ 

 Reuter from Tanacetum, Ervum, Elymus, Calamagrostis, etc. 



Previous Distribution. — Finland {Reuter) and Bohemia 

 ( Uzel). 



Wiulaton-on-Tyne. 



/ A 4 



