78 INSECUTOR INSClTlyE MENSTRUTJS 



Head sih^ery-white, antenns and frontalia black, parafron- 

 tals golden on inner posterior border; palpi fulvous. Thorax 

 black, silvery pollinose ; mesoscutum and scutellum with brassy 

 tinge; four black vittse. Abdomen black, shining except the 

 silvery basal half of last three segments. Legs black. Wings 

 clear. Tegulse whitish. 



Holotype, Cat. No. 20310, U. S. Nat. Mus., female. 



A NEW PLECTROTHRIPS (THYSANOPTERA) 

 FROM JAMAICA 



By J. DOUGLAS HOOD 



The genus Plectrothrips was erected by the author in 1908 

 for a new species of unknown habits taken in Illinois on a 

 woodshed window. It was not known whether the specimens, 

 of which there were seven, had flown onto the window during 

 the warm sultry afternoon or whether they had come from the 

 wood in the shed itself, about as many specimens having been 

 found on the outside as on the inside of the window. 



One year later, Mr. Bagnall made known a species of Plec- 

 trothrips from the Isle of Nias, in the Malay Archipelago, 

 basing his description on a unique specimen without further 

 data. 



The third species of the genus, which is here described as 

 new, is so closely related to the other two as to leave but little 

 doubt that the habits of all are the same, and directly respon- 

 sible for the interesting structural characters of the genus. 

 The Jamaican species was taken in the burrows of a Ceram- 

 bycid beetle in the wood and cambium of Pimento by Mr. 

 Archibald H. Ritchie, Government Entomologist for Jamaica, 

 to whom I am indebted for the types. 



Plectrothrips pallipes, new species. (PI. I, figs. 1-4.) 



Female (macropterous). — Length about 1.4 mm. Color 

 blackish brown, fading to brownish orange on abdomen ; legs 

 uniform orange yellow; segments 2 and 3 of antennas largely 

 yellow ; fore wings yellowish at base. 



