248 



ENTOMOLOGICAL NEWS. 



[June, '07 



are strongly suggestive of Sericothrips, but the abdomen lacks 

 the numerous small spines characteristic of that genus. 



Ctenothrips bridwelli n. sp. 



Female. — Length 1.75 mm. to 1.9 mm.; width of mesothorax .33 mm. 

 to .37 mm. ; greatest width of abdomen .45 mm. to .48 mm. General 

 color very dark brown, thorax lighter. 



Head a little longer than wide; equally broad in front and behind; 

 somewhat retracted into the prothorax; sides immediately behind the 

 eyes strongly concave; top and sides behind rough with transverse 

 ridges. Eyes with rather unusually strong hairs between the facets; 

 appearing to protrude strongly on account of the concavities behind 



Fig. 1. — Head, prothorax, antennae and forelegs 

 of female. 



Fig. 2. — End of abdomen. 



them. Cheeks, behind these concavities, rather full and rough with 

 ridges. On the hinder border of the postocular concavity, on each side, 

 there are three prominent spines rather closely placed. Ocelli large 

 and well separated ; ocellar bristles present, but inconspicuous. Mouth 

 cone rather long and sharp. Antennae about two and one quarter 

 times as long as the head; their bases separated by the notched ele- 

 vation of vertex ; relative lengths of segments as follows : 



Number of segment, 1 2 3 45678 



Spaces of micrometer covering it, 9.5 11 20.5 17.5 14 19 3 5 

 Basal two segments much the thickest; spines on most of the seg- 

 ments long and slender; sense organs rather small and inconspicu- 

 ous. Segment one cylindrical, somewhat thicker at base than at apex; 

 two strongly constricted toward the base; three and four fusiform; 

 five similar in form to four at its base, but quite broad at its apex 

 and rather broadly joined to six, which with style tapers gradually 

 to the tip. Color : one and two rather dark brown ; three clear yellow ; 

 four yellow, but slightly tinged with brown; five yellow at base, but 

 gradually shading into light brown at apex; six brown; style brown, 

 but lighter than six. 



