NORTH AMERICAN" TETRASTICHUS — BURKS 557 



TETRASTICHUS LONGICORPUS (Girault), new combination 



Figures 16, a ; 17, e 



Neotet?-asUcJiodes longicorpus Girault, Proc. U. S. Nat. Mus., vol. 51, p. 129, 

 1916. 



Yellow with variable, somewhat iridescent dark spots; all of head 

 but posterior side, dorsolateral areas of pronotum, prepectus, lateral 

 and inner triangular parts of scapulae, lateral and posterior areas of 

 mesopraescutum, all of mesoscutelluin but spot at anterior margin on 

 meson and areas bordering sutures and grooves, area around meso- 

 pleural suture, median lobe of metanotum, anterior coxae, and apices 

 of middle and hind coxae, more distal segments of all legs, and base 

 of gaster yellow ; male mostly shining black. 



Female. — Length, 3.0-3.5 mm. Antennae inserted nearly in center 

 of frons, dorsad of level of ventral margins of compound eyes as in 

 figure 16, a; apex of scape reaching level of anterior ocellus, first 

 funicle segment one-fifth longer than second, second and third almost 

 equal in length, club twice as long as second funicle segment ; length 

 of malar space two-thirds as great as height of compound eye ; posto- 

 cellar and ocellocular lines equal in length. Pronotum with a femoral 

 groove (fig. 17, e) ; mesopraescutum as long as wide and bearing one 

 row of bristles at each lateral margin ; submarginal vein of f orewing 

 with five to seven dorsal bristles, marginal vein four times as long as 

 stigmal; hindwing blunt at apex, fringe at posterior margin one- 

 fifth width of wing at hamuli ; scutellum usually bearing three pairs 

 of bristles. Propodeum faintly reticulated, almost smooth, median 

 carina only present; mesai length of propodeum one-fifth length of 

 mesoscutellum ; spiracles contiguous with anterior margin ; rudimen- 

 tary petiole present; gaster more than twice as long as thorax. 



Male. — Length, 2.25 mm. Scape greatly enlarged, without a dark- 

 ened anterior carina; first funicle segment slightly shorter than sec- 

 ond, three distal segments subequal in length, funicle segments 

 enlarged near bases and bearing conspicuously long setae; length of 

 malar space two-thirds height of compound eye ; mesal length of pro- 

 podeum one-third as great as length of mesoscutellum; gaster and 

 thorax equal in length. 



Type locality. — Las Vegas, N. Mex. 



Types.— U.S.N.M. No. 19645. 



Host. — The western pine tip moth, Rhyacionia frustrana bushnelli 

 (Busck) , on Pinus ponderosa. 



Distribution. — New Mexico. 



TETRASTICHUS OKLAHOMA (Giranlt), new combination 



Neomphaloidella Oklahoma Gibault, Descriptioues stellarum novarum, p. 9, 1917. 



Black; area of head around ocelli, bases of coxae, and gaster very 

 dark brown; area of head around mouthparts, tegulae, inner trian- 



