ALEURODICUS TRINIDADENSIS. 69 



Aleurodicus trinidadensis n. sp, 

 (PI. XXIII, figs. 1-8.) 



Specimens of this insect were received from Dr. F. W. Urich, 

 Trinidad, on 'March 27, 1912. The pupa? are similar to those of 

 dugesii and ornatus in that they possess a very prominent lingnla. 

 The adults, however, are nearer to those of cocois. 



DESCRIPTION. 



Pupa (PL XXIII, fig. 1). — Color yellowish; empty case trans- 

 parent, with very faint shadings around the base 'of some of the com- 

 pound wax pores. These pores are arranged in seven pairs, one 

 thoracic pair and six abdominal. The two caudal pairs are reduced. 

 The spinnerets of the compound pores (PI. XXIII, fig. 4) are ex- 

 tended into rods which are about half the length of the outer cup and 

 the central process protrudes some distance from the opening of the 

 pore. Margin (PI. XXIII, fig. 3) entire and just within it, all 

 around, a series of disc-like pores. Vasiform orifice (PI. XXIII, fig. 

 2) subcordate in outline, the anterior margin straight, and the latero- 

 caudal " fold " armed on each side with a bristle. Operculum rec- 

 tangular, transverse, with the caudal margin slightly indented. Lin- 

 gula very large and exserted, the distance from the anterior mar- 

 gin of the orifice to the tip of the lingula being about twice the 

 longest diameter of the operculum. Both lingula and operculum are 

 setose and the former is armed with four spines. Shape elliptical, 

 broadest slightly caudad of middle. Size 1.36 mm. by 0.928 mm. On 

 the leaf the waxy secretion does not present a thick mass, but is com- 

 posed of a large number of distinct waxen rods, many of which 

 become broken (PI. XXIII, fig. 8). The marginal fringe is com- 

 posed of a series of fine distinct waxen rods. 



Adult. — Color yellowish, the abdomen and appendages of some 

 specimens tinged with reddish. Eyes dark brown. Forewings 

 marked with four dusky areas as illustrated in Plate XXII I, figure 5. 

 The intensity of these markings varies considerably and in some speci- 

 mens they are hardly noticeable. In others the two dusky areas on 

 either side of the radial fork become united into a band. Hind 

 wings unmarked, excepting a shaded margin sometimes present along 

 the proximal portion of veins. Vertex (PI. XXIII, fig. 7) rounded; 

 claspers of the male (PI. XXIII, fig. G) long and narrow, with the 

 tips sometimes dusky. Penis short, slightly curved. 



Forewing 1.9 by 0.96 mm. ; of female 1.6-2.08 mm. ; of male 2.16 

 mm. ; claspers from base to tip 0.64 mm. ; last abdominal segment 0.56 

 mm. ; penis 0.288 mm. 



Type. — No. 14777, U. S. National Museum. Described from speci- 

 mens in balsam and dry specimens on infested foliage. Taken on 

 coconut. 



