CRAWFORD, THYSANOPTERA OF MEXICO AND THE SOUTH 159 



except on two anal segments; four comparatively stout spines on ninth (Fig. 

 65 D), and four on anal segment near tip; ovipositor weak and inconspicuous. 



Measurements: Head, length .064 mm.; width .11 mm.; prothorax, 

 length .12 mm., width anteriorly .10 mm., posteriorly .15 mm.; mesothorax, 

 width .22 mm.; abdomen, width (average) .24 mm.; total length 1.02 mm. 

 (.84 — 1.20 mm.) Antennae: I, .019 mm. ; II, .024 mm. ; III, .026 mm. ; IV, 

 .027 mm.; V, .020 mm.; VI, .037 mm.; VII, .018 mm.; total .17 mm. 



Described from numerous females. 



Food-plants: Various Compositse, Solanum, Daucus sp. (?), and others. 



Locality: Guadalajara, Mexico. (Crawford.) 



This species resembles somewhat Thrips albopilosa Uzel, (1) in having 

 very inconspicuous spines, though they are not white as in that species; (2) in 

 the general arrangement of spines on the fore-wing; (3) in the shape of the 

 fifth antennal segment. Although these resemblances are unmistakable, still 

 this can not be the same species by any means. 



Phloeothrips raptor n. sp. 



Average length about 2 mm. ; general color brown. 



Head (Fig. 66 A) rather large, about one and one-half times as long as 

 broad, distinctly narrowed both posteriorly and postocularly ; broadly rounded 

 in front ; cheeks arched, with several conspicuous setigerous tubercles ; vertex 

 elevated and produced, but not attaining the insertion of the antennas ; with one 

 pair of long knobbed postocular spines, basal lialf of spine dark, distal half 

 almost transparent ; all other cephalic spines small. Eyes large, prominent, 

 slightly bulging, finely and closely faceted, pigment transparent white ; ocelli 

 rather large, but indistinct ; anterior ocellus directed forward on apex of pro- 

 duced vertex ; posterior ocelli not contiguous with inner margin of eyes. Mouth- 

 cone short, reaching about three-fourths the length of prothorax ; labrum pro- 

 duced, very pointed at tip. Antennas (Fig. 66 C) about one and one-half times 

 as long as head, and slightly more than twice the width of head, rather stout 

 and very spinose, but the spines not conspicuous ; several long thick sense cones 

 on segments III-IV; III-VII pedicellate, III and IV pyriform, V and VI fusi- 

 form, VII and VIII connate; I and basal half of II concolorous with body, the 

 rest uniform light brown, III and IV transparent at extreme base. 



Prothorax (Fig. 66 A) slightly more than twice as wide (including coxae) 

 as long, and a little over half as long as head ; with long light colored, knobbed 

 spines on posterior and anterior angles and one pair midlaterally ; a smaller 

 blunt pair on both anterior and posterior margins.Mesothorax a little wider 

 than prothorax, widest across mesocoxae ; pterothorax reticulated. Wings of 

 medium length, slender, transparent; with three long spines on basal posterior 

 margin ; posterior wings with a brown stripe in the center, extending from base 

 to near tip. Legs rather long and stout, sparsely spinose; forelegs (Fig. 66 E) 

 apparently rapatorial ; forefemora enlarged, with a conspicuous depression on 

 inner side extending from base to tip (evidently a sheath for the tibije), with 

 the margins of the depression finely toothed ; forctarsi with a large sharp tooth. 



