Classification of the Aleyrodidae /

Abstract

Adult male ami female, details x. Aleurodicus cocois: Bgg, Larvae, and details 9. Aleurodicus cocois: Bkiu <>i* full-grown larva 10. Wings of ileurodicus oonspurcatus 11. Aleurodicus phalamoides: Adult aud details VI CLASSIFICATION OF THE ALEYRODIM-PART I. INTRODUCTION. $ Few groups of insects have been more neglected by entomologists and collectors than the Aleyrodida?. It is believed that comparatively few of all the species which undoubtedly exist have as yet found their way into collections. The family is widely distributed in the temperate and tropical regions of the world, and it will perhaps, when thoroughly worked, prove to be about as rich in species as the Coccidae or Aphididse. Beginning with Maskell's paper, which appeared in 1895, there have followed a number of publications dealing with the Aleyrodidge, most of them systematic in character, but some dealing with the biology and habits of certain species of considerable economic importance. These papers have come from widely separated parts of the world, as New Zealand, the United States, India, Europe, Japan, etc., and indicate an increasing and widespread interest in these insects. Until 1907 only two genera for the family were recognized, Aleyrodes and Aleurodicus. Since this date, however, three additional genera have been established, namely, Aleurochiton, Paraleyrodes, and Udamoselis, the discovery of which has thrown much light on the probable position of the Aleyrodidse in relation to other families of insects, and on the lines of descent of the several subgroups within the family itself. The insect collections of the United States National Museum and of the Bureau of Entomology contain a large amount of material of this family received from correspondents from many parts of the country, and have been recently considerably augmented by the large series of specimens attained by Mr. E. S. Woglum, of the Bureau of Entomology, in connection with his search for natural enemies of the citrus white fly {Aleyrodes citri R. & H.) in the Orient. The bureau also has, as stated in an earlier publication, through the kindness of the New Zealand Institute, the temporary custody of the Maskell collection of Aleyrodidse, including nearly all of his types. It has therefore seemed appropriate to undertake, at this time, a revision of the group as a whole, and to determine as 1 2 CLASSIFICATION OF THE ALEYRODIOE. accurately as possible a system of classification based upon the natural relationship of the various forms. when the forms have been carefully studied. In Paraleyrodes segments III to VII have become united so as to form two.

Aleurodicus pulvinatus(Maskell) (Homoptera: Aleyrodidae), and its emergence as a pest of coconut in the Caribbean

“…The dark bands of pigmentation which Maskell (1896) and Quaintance and Baker (1913) regarded as an important feature of puparia of A. pulvinatus may be variably present, or entirely absent, as shown in figures 5-10, 20c. The variability seen in these samples leads us to the conclusion that the presence or absence of Downloaded by [University of Saskatchewan Library] at 19:59 10 October 2012 pigmentation is likely to be a function of physical age or environmental factors.…”

“…The nomenclatural discussion below is necessarily complex. Quaintance and Baker (1913) discussed at great length their decision to place A. iridescens Cockerell (1898) in synonymy with A. cocois (Curtis, 1846), quoting in full both Cockerell's original description of A. iridescens and a redescription of A. cocois by Riley and Howard (1893). We have studied type material of both species.…”

“…Lectotype here designated. [Placed in synonymy with A. cocois (Curtis, 1846) by Quaintance & Baker (1913)]. Here regarded as a synonym of A. pulvinatus (revised synonymy).…”

“…Within the New World Aleurodicinae, and of relevance to this investigation, is the unresolved question of species assigned to Lecanoideus Quaintance and Baker (1913). Lecanoideus was proposed as a subgenus of Aleurodicus Douglas (1892), but it was raised to generic rank by Costa Lima (1928), who gave no reasons.…”

GENUS Aleurocanthus (HOMOPTERA: ALEYRODIDAE) WITH TWO NEW RECORDS FROM PAKISTAN

“…Along with other problems it is also responsible for the reduction of nitrogen level in affected leaves, fruit is of small in size, overall losses are upto 80% Eberling (1954). Genus Aleurocanthus was erected by Quaintance and Baker (1914) with type species Aleurodes spinifera. Mound and Halsey (1978) published a catalogue of the family Aleyrodidae and listed 68 species in this genus.…”