76 CLASSIFICATION OF THE ALEYKODID^. 
Segments 3 to 7 show usual corrugations: segment 7 with constriction on 
distal half at which point is borne a distinct bristle. 
Habitat. — Type material collected at Havana and Santiago de las Vegas, 
Cuba, in November, 1910, by the writer. 
Food plant. — Guava, Psidium guajara radii. 
Type. — Type material in collection of the U. S. D. A.. Bureau of Entomology, 
and in that of the writer. 
This species is really distinguished by its iridescent wing on which the spots 
described stand out prominently. It differs superficially from iridescens in 
having a spot on the hind wings and in color of pupa case; from minium 
it differs in having no appreciable clouding of wings other than the spots 
described, in shape and location of the spots, and in the pupa case having 
but five instead of seven pairs of wax pores. The darkened portions of the 
vasiform orifice appear as a dark spot on the untreated adult. In crawling 
about the leaf, the female leaves behind a line of fine fluffy waxen secretion 
rubbed from a tuft of the same developing on -the underside of her abdomen. 
Frequently her path can be distinctly followed by the aid of these lines of 
secretions. In mating, the sexes head in the opposite direction, and in this 
respect differ from those species of Aleyrodcs that have come under the observa- 
tion of the writer. 
This species becomes quite abundant on the guava at times, and when not 
parasitized becomes a nuisance. In November, 1010, it was causing noticeable 
blackening of the foliage at Santiago de las Tegas. The species is, however, 
heavily parasitized by a hymenopterous parasite and the red fungus (Asch&r- 
sonia alcyrodis) which the writer found generally present on affected leaves. 
Prof. Patricio Cardin, for whom this species is named, sent the writer specimens 
in May. 1911. over 90% of which had been parasitized by a hymenopterous 
parasite. This is the species of white fly figured by Cook and Home as an 
undetermined aleyrodid on guava (PI. XV, fig. 41, Bull. 9. Estacion Central 
Agronomica de Cuba), and beyond doubt is that referred to in the Primer 
Informe Anual of the same station as " Guagua a mosca blanca de la guayabo." 
Cook and Home (1. c, p 31), say that Alcyrodes howardi is the species referred 
to, but in this they are apparently mistaken, as the writer has not found 
howardi except very rarely on guava. While howardi was generally present 
on orange trees close by, this species was found only on guava. 
DESCRIPTIVE REMARKS. 
Pupa case. — Form elongate oval; length 0.896 mm.; width 0.616 
mm. Dorsum with five pairs of large compound pores with reduced 
spinnerets (PI. XXVII, fig. 3). Scattered on the surface of the 
dorsum are also found a number of minute clear areas, resembling 
pores. Dorsal margin entire; just within it all around is a row of 
large simple wax pores (PI. XXVII, fig. 4). On the caudal ex- 
tremity, opposite (lie two caudal compound pores, is a pair of largo 
hairs. Along the margin all around and apparently on the ventral 
surface is a row of small spines, there being ftboul nine to a side. 
A pair of small sola- is inserted ju-t cephalad of the vasiform orifice. 
This orifice is subcordate in outline, with the cephalic margin straight. 
The operculum is almost rectangular in shape, with the caudal mar- 
gin wavy. The linguli is somewhat spatulate, slightly exserted, and 
armed with four long hairs. Both operculum and lingula are setose. 
