BAGNALL'S THYSANOPTERA 137 



Megathrips nobilis Bagnall 



Megathrips nobilis Bagnall, igoge : 130-131. 



Priesncr (1964 : 140) states that nobilis occurs throughout Western and Central 

 Europe on grass, but Morison (in litt.) has found all stages on dead branches oiSalix 

 phylicifolia in Scotland. 



LECTOTYPE (J. England : Cambridgeshire, Wicken. Fen, dried sedges, 

 iv-v.1896 (D. Sharp). 



Megathrips quadrituberculatus (Bagnall) 



Idolothrips quadrituberculata Bagnall, 1908c : 210 211. 

 Megathrips qiutilntiilnt 1 kIiiIik (Bagnall) ; Bagnall, ig2ld : 



This can be distinguished from honoris by tin greater extent of yellow colouration 

 on the middle tibiae, shorter lateral setae on the tube, shorter I-? x setae on tergite IX, 

 and shorter sensoria on antennals V and VI. 



Holotype $. Japan : 7.1V.1881 (G. Leivis). 



Meiothrips annulipes (Bagnall) 



Acanthinothrips annulipes Bagnall, 19141 : 378-370. 

 Meiothrips annulipes (Bagnall) ; Bagnall, 1934b : 494. 



The genus Meiothrips is related to Idolothrips in the possession of praepectal 

 plates, a broad mesopraesternum, two pairs of postocular setae and the proximity of 

 the pronotal anteroangular and midlatcral setae. Meiothrips species have a pair of 

 very large setae close together medially on the metanotum, and there is only one pair 

 of major epimeral setae. M. annulipes and the type-species of the genus, annulatus 

 Priesner, have no accessory cilia on the fore wing but these are present in menoni 

 Ananthakrishnan according to its description. 



LECTOTYPE^. Sarawak : Matang, on dead bark, 13.xii.1913 (G. E. Bryant). 

 Mesothrips jordani Zimmermann 



Mesothrips jordani Zimmermann, 1900 : 16-17. 

 Phlaeothrips similis Bagnall, 1909J : 533-534. Syn. n. 



Ananthakrishnan (1964) has indicated some of the most important characters of 

 the genus Mesothrips of which jordani is the type-species. In this species as in 

 several others to be included in the genus, the praepectus is present and the meso- 

 praesternum absent medially although widely expanded laterally. The head is 

 suddenly narrowed basally, the cheeks bear a series of setae, the postoculars are long, 

 there are three trichomes on antennal III, and the slender maxillary stylets are wide 

 apart low in the head. The abdominal tergites bear two pairs of wing retaining 

 setae, and anterolateral of these are six to ten small stout setae much as in Giganto- 



