A new species of Ceraleurodius from the Amazon Basin ( Aleyrodidae: Homoptera)

A new species of Aleyrodldae, Ceraleurodius duckei n. sp .. ls described and comparisons are made with its nearest relativas.

in the genus Ceraleurodius; Mound & Halsey (1978) listing ali but two of them as being from Srazi l .

Legs:
Basally grouped close together with large coxae. Ali legs with light fuscous coxae, trochanter and basal quarter of femur. Remainder of legs very light yelrow, almost white. Two tarsal segments with first segment about four times as long as second segment.

Tegmen:
Generally elongate with falcate sculpting three times along apical margin and three times on anal margin (Figs. 1, 3) . Ground color dark fuscous with golden spots basally along costal and anal margins, centrally between Radial sector (Rs) and Medius (M). and apically extending from behind termination of Rs to costal margins . Radius (R) reaching costal margin about 2/ 3 distance to apex, As unbranched, evenly curved from orlgin to apical margin. M curved upward for short distance near mid-length . Cubitus (Cu) indi-

Hindwing:
Light fuscous. R almost reaching apical margin. M long and straight . Cu not distinguishable.

Abdomen of Ma/e:
Seven abdominal segments, shading gradually from yellow anteriorly to dark brown posteriorly. First six terga dividec into raised mediai area and smaller, depressed lateral areas . Dividing I ines between mediai and lateral areas of terga darker fuscous, forming two longitudinal, dorsal stripes. Caudal apex of terga VI with a small raised knob, which when terQum VIl is rai sed, f its ínt o small depression at anterior margin of tergum VIl. Sterna I and 11 with large lateral pl acs. Sternum 111 with sma ll lateral plac . Externa i mal e genitalia consisting of two, long, lateral lobes bright, orange, changing abruptly to black, then to pale yell ow distally. M ediai gen ital fi lament long, thin, dark fuscous .
Ma/e Tegmen Length: 3.21 -3.33 mm . This species of Cera/eurodius is unique among described species of this genus in size, w ing patt ern and color pattern of t he male genital ia. lt shows no evidence of the white, wax-like covering for which most aleyrodids are recogn ized . Bondar has described t his genus (under the name Radialeurodicus) as the most primitive of the family, after Udamoselis (which Mound and Halsey have listed as a nomina dubia) .
Ceraleurodius duckei is named f or Dr. Adolpho Ducke, early pioneer in Amazonian entomology and for whon INPA's Reserva Ducke is named.
We wish to thank Sr. Artemio Coelho da Silva for the illustrations .