494 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



4. ALEYRODES AEPIM Goldi. 

 Aleyrodes aepim Goldi, Mittheil. Scliweitz. entom. Ge.sellf^ch., VII, 1886, p. 250. 

 On Manihot jKiIhuita ("Aepim," " Mandioea doce'') Rio de Janeiro. 



5. ALEYRODES TENTACULATUS, new species. 

 Plate XXXI, fig. 26-30a. 



Larva. — (Described from moult). Size, 0.3 b}^ 0.16 mm.; thin, 

 transparent and white; elliptical; the dorsmn free from pores and 

 papillae; there is a j)air of long-, curved sette on the caudal maro^inand 

 a pair of shorter ones on the latero-cephalic maro-in of the operculum. 

 Linoula as long- as orifice, spatulate and enlarg-ed distally; the lateral 

 margins show faint traces of the three lateral lobes and the terminal 

 lobe characteristic of the pupal stage. 



Larva. — Size, 0.4 hy 0.28 mm,; elliptical, whitish yellow, thin and 

 semi-transparent; the dorsum has neither pores nor papilkv and is void 

 of all secretion; caudal margin bears a pair of long, curved spines set 

 in conspicuous, tubercled bases; antenna' minute, slender, and with a 

 notch near the tip. In other respects as in pupa-case. 



Pupa-e<(se. — Size varies from 0.83 })v 0.56 mm. to 0.96 by 0.7 mm.; 

 elliptical, narrowed at thoracic region and tapering somewhat to the 

 cephalic margin; caudad the case narrows more abruptly, and the 

 caudal end is somewhat emarginate to meet the furrow which extends 

 from it to the vasiform orifice; color yellow, sometimes brown from 

 the presence of fungus or a parasite; the empty case is a white, semi- 

 transparent film. There is no lateral fringe, but the case rests upon a 

 rather high, vertical, ventral fringe of coalesced, white w^ax rods; the 

 dorsal secretion is a submarginal series of separate, glassy, white wax 

 rods, which are short, tapering, and flattened somewhat, as they are 

 closely appressed to the margin of case, or it is composed of a 

 series of longer and more slender rods, interspersed with very much 

 longer and stouter similar wax rods; this latter type is not appressed 

 to the margin of case, but bends downward slightl}^ toward the leaf. 

 The dorsum is convex and marked with more or less radially arranged 

 thickenings, or reticulations; sutures distinct nearl}', or quite, to the 

 marginal rim, thoraco-abdominal one sinuate, posterior ones of abdo- 

 men strongly reflexed caudad. There is a well-defined marginal rim, 

 within which is a single, usually regular, row of about one hundred 

 closely set, large, conical papilla?, which have a diameter of nearly the 

 width of the rim. Scattered among the papilki?, and mesad of them, 

 are three rather definitely arranged rows of small pores; besides these 

 there is a longitudinal row on each side of the dorsi-meson from the 

 vasiform orifice cephalad, with a pair to each segment on the abdomen; 

 this same order seems to obtain also on the thorax, but the segments 

 are not well enough defined to verify it; many small pores are also 



