Pseudococcus (Westwood)

Pacheco da Silva, Vitor C., Kaydan, Mehmet Bora, Germain, Jean-Francois, Malausa, Thibaut & Botton, Marcos, 2016, Three new species of mealybug (Hemiptera, Coccomorpha, Pseudococcidae) on persimmon fruit trees (Diospyroskaki) in southern Brazil, ZooKeys 584, pp. 61-82 : 73-74

Taxon classification Animalia Hemiptera Pseudococcidae

Genus Pseudococcus (Westwood)

Pseudococcus (Westwood), 1840

Trechocorys Curtis, 1843

Boisduvalia Signoret, 1875

Oudablis Signoret, 1882

Type species.

Dactylopius longispinus Targioni Tozzetti.

Generic diagnosis

(adapted from Gimpel and Miller 1996; Williams and Granara de Willink 1992). Adult female. Body normally broadly oval, 1.2-4.3 mm long, 0.6-2.6 mm wide. Antennae each normally 8-segmented, occasionally with 7 segments. Labium 3-segmented, always longer than wide. Legs well-developed, claw without a denticle; translucent pores generally present on hind legs, on coxae, and/or femora and/or tibiae, rarely on trochanter; tarsal and claw digitules both capitate, claw digitules thicker than tarsal digitules. Circulus usually present, well-developed and divided by an intersegmental line; rarely small and not divided, usually wider than long. Quinquelocular pores always absent.

Description.

Dorsum. Dorsal setae flagellate. Anterior and posterior ostioles present, well-developed. Cerarii present, 12-17 pairs, preocular pair always absent, each cerarius normally with two conical setae, except for 1 or 2 on head and thorax, each often with 3 or 4 conical setae plus an associated cluster of trilocular pores; anal lobe cerarii well-developed, each often sclerotized, usually with two enlarged conical setae; usually all cerarii with auxiliary setae, but occasionally auxiliary setae absent anterior to the penultimate pair. Anal ring typically with six setae. Trilocular pores scattered over dorsum. Minute discoidal pores usually present, sometimes situated adjacent to rim of oral rim tubular ducts. Oral rim tubular ducts present on body margins and medially and submedially, or in rows across abdominal segments, sometimes associated with minute discoidal pores and setae. Oral-collar tubular ducts often present. Multilocular pores rarely present on dorsum.

Venter. Body setae flagellate. Trilocular pores scattered over entire surface. Minute discoidal pores scattered throughout the venter, often of two sizes, larger pores frequently present next to eyes and on venter of anal lobes, sometimes also situated adjacent to rim of oral rim tubular ducts. Oral rim tubular ducts occasionally on venter only. Oral-collar tubular ducts of one or more sizes, of various lengths and widths, shortest ducts often present medially on abdominal segments, and larger ducts often present on margins of abdomen. Multilocular disc pores present on posterior abdominal segments, especially around vulva.

Key to adult females of the Pseudococcus maritimus complex with multilocular disc pores present on dorsum (adapted from Gimpel and Miller (1996)).