122 Journal New York Entomological Society. [Voi. xxiii. 



Bregmatothrips gracilis new species. (Plate VII., figs. 5 and 6.) 



Female (macropterous). — Length about 1.2 mm. Color nearly uniform 

 dark blackish brown, with pterothorax very slightly paler; legs yellow, with 

 femora and tibiae shaded with blackish brown ; antennal segments 3-5, and 

 apex of 2 and basal third of 6, lemon yellow. 



Head about i.i times as long as wide, equal in length to prothorax; ver- 

 tex swollen, produced anteriorly, broadly rounded as seen from above; dorsal 

 surface faintly cross striate at base; interocellar bristles long, postocellars 

 and postoculars shorter than in z'e)tiistiis. Eyes about .43 as long as head, 

 protruding. Ocelli distant, forming an equilateral triangle, the two posterior 

 ones opposite posterior third of eyes, the anterior smaller. Antennae about 

 1.6 times as long as head; segments 7 and 8 more slender than in venustus ; 

 I and 2 slightly lighter than head, 2 paler toward apex and at middle; 3-5 

 pale lemon yellow ; 6 yellow in basal third ; remainder of antenna blackish 

 brown; sense cones slender, simple; formula: 3. o-i ; 4, o-i ; 5, i— o ; 6, i— i+i. 



Prothorax slightly broader than long and about equal in length to head ; 

 posterior angles each with two long slender bristles ; anterior angles with a 

 pair of smaller, weaker bristles about equal in size to the posterior marginals 

 and to a pair at the posterior third of the lateral margins ; all other bristles 

 minute. Mesothorax distinctly broader than prothorax and metathorax, which 

 are subequal in width. Wings long, nearly transparent, slightly shaded with 

 yellow ; fore wings with two longitudinal veins reaching nearly to tip ; an- 

 terior vein with 7 (rarely 6) pale bristles, of which two are usually near 

 apex, three near base, and two at basal third ; posterior vein with 6-8 bristles ; 

 hind wings slightly paler than fore wings. Legs rather short and stout; tarsi, 

 fore tibiae except for darkening near base externally, and mid and hind 

 tibiae in apical third, yellow ; fore femora light, with an external dark area ; 

 mid and hind femora brown, becoming yellow at base. 



Abdomen long, slender, sharply conical, the ninth segment fully 1.6 times 

 as long as the tenth, which is divided above; bristles on 9 and 10 long, 

 strong, dark in color, prominent. 



Measurements of holotype : Length 1.21 mm.; head, length 0.144 mm., 

 width 0.136 mm.; prothorax, length 0.144 mm., width 0.175 mm.; mesothorax, 

 width 0.208 mm ; metathorax, width 0.180 mm.; fore wing, length 0.672 mm., 

 width 0.046 mm. ; abdomen, width 0.244 "ini- 



Antennae: i 2 



Length (fi) 17 33 



Width (m) 29 25 

 Total length, 0.222 mm. 



Male (brachypterous). — Length about i mm. Color dark blackish brown, 

 with pterothorax, first abdominal segment, legs, and intermediate antennal 

 segments, lemon yellow; prothorax paler than head, fading posteriorly to 

 ochraccous yellow. 



Ocelli wanting. Femora and tibiae with a narrow and faint shading of 



