THYSANOPTERA OF MEXICO AND THE SOUTH. II 



D. L. CRAWFORD. 



In this paper the remaining new species from the South, including Mexico, 

 Central and South America, Cuba, etc., are described and figured; the fact that 

 only one previously described species was found, and that all the rest were 

 new, shows how little is really known of this group in the South. 



Euthrips cephalicus n. sp. 



Average length 1.1 mm.; general color, yellow. 



Head (Fig. 63A) wider than long, rectangular, somewhat concave at 

 insertion of antennae ; distinctly retracted into prothorax ; cheeks parallel with 

 one pair of large postocular spines and several small ones ; anterior portion 

 of head between the eyes and in front of the ocelli abruptly depressed, with 

 the anterior ocellus on the vertical plane, and a pair of very large spines on 

 the margin of the depression. Eyes pale yellow, comparatively large and 

 prominent ; ocelli very indistinct, larger than facets of eyes ; anterior ocellus 

 directed forward, with a small seta on each side. Alouthcone long and pointed, 

 reaching almost to posterior margin of prothorax ; maxillary palpi three-seg- 

 mented. Antennae (Fig. 63B) about two and one-half times as long as head, 

 moderately slender; segments VI - \''III and apical half of IV, light brown, the 

 rest almost white; basal segment short; II, with a large double tubercle on 

 dorsal surface extending beyond insertion of III, and bearing two very stout, 

 black spines; a bifurcate sensecone on III, and a single one on IV. 



Prothorax (Fig. 63 A) wider than ^ong, and slightly longer and wider 

 than head, broadly rounded posteriorly ; with two large spines on posterior 

 angles, one equally large on anterior angles, an equal pair on anterior margin, 

 and a smaller pair midway on posterior margin ; dorsal surface with numerous 

 small spines. Thorax broadest at mesothorax, with two large spines midway 

 on anterior dorsal margin of mesothorax ; metathorax with sides slightly con- 

 verging. Legs ( Fig. 63 E, F, G ) of medium size, with numerous incon- 

 spicuous spines; posterior tibiae, within, with a row of several stout spines, 

 and two longer ones on apical end ; legs concolorous with body throughout. 

 Wings (Fig. 63 H) long and comparatively stout, reaching to eighth abdom- 

 inal segment, uniform light yellow ; with two longitudinal veins, the posterior 

 one appearing about one-fourth the wing's length from the base and disap- 

 pearing before reaching the tip ; anterior margin with a row of twenty-three 

 stout spines, anterior vein with twenty-one, and posterior vein with seventeen ; 

 posterior margin with a long doulile row of cilia. 



