Iceryini Cockerell

Unruh, Corinne M. & Gullan, Penny J., 2008, Identification guide to species in the scale insect tribe Iceryini (Coccoidea: Monophlebidae), Zootaxa 1803 (1), pp. 1-106: 21-22

publication ID

http://doi.org/ 10.11646/zootaxa.1803.1.1

DOI

http://doi.org/10.5281/zenodo.5126238

persistent identifier

http://treatment.plazi.org/id/304C87CD-FFD2-FFCB-FF2B-B5DEFD01C4DC

treatment provided by

Felipe

scientific name

Iceryini Cockerell
status

 

Tribe Iceryini Cockerell  

Description of adult female

Slide-mounted specimens.— Body oval to elliptical. Antenna 8 to 11 segmented, basal segment widest, apical segment elongate; each segment with varying number of hair-like setae. Eyes circular, at base of antennae. Labium 3 segmented with spatulate setae on apex, hair-like setae anteriorly. Legs well developed; forelegs shorter than mid- and hindlegs; each trochanter with a long distal trochanteral seta on the apical margin and 4 campaniform sensilla on each face; tibia with robust setae towards apex; tarsus curved ventrally, with an inner longitudinal band of robust setae; tarsal setae increasing in length towards apex; claw with one pair of digitules, acute and shorter than claw apex or slightly knobbed and extending beyond claw apex. Thoracic spiracles with elongate peritremes; multilocular pores absent from atrium, but sometimes clustered on derm at opening. Ovisac band either present or absent, if present formed by setae and multilocular pores arranged in a large circle on ventral abdomen, anterior edge of band posterior to hind coxae, lateral and posterior edge on submarginal abdomen. Internal marsupium either present or absent, if present, on ventral abdomen posterior to hind coxae; marsupial band of simple multilocular pores and sparse setae forming a complete or incomplete circle or V-shape, becoming sclerotized at maturity; vulvar opening and cicatrices present in marsupium. Vulvar opening on ventromedial abdomen, surrounded by setae and multilocular pores with bilocular or trilocular centre and 10–24 outer loculi; these pores stain bluish in acid fuchsin. Cicatrices each circular to elliptical, on venter only, posterior to vulvar opening and arranged in a transverse row or semicircle, but in Echinicerya   also in 1 or 2 lateral longitudinal rows on each side of ventral abdomen. Abdominal spiracles in 2–4 pairs on abdominal segments V–VIII; multilocular pores absent from atrium but sometimes clustered on derm at each spiracular opening. Anal opening dorsal, with 2 lateral apodemes, typically surrounded by robust setae and multilocular pores similar to vulvar pores; anal ring simple, sclerotized, except for Gueriniella   with anal tube having inner sclerotized ring of polygonal pores and external opening with 2 or 3 rings of multilocular pores. Elongate tubercles present in some Crypticerya spp.   only, marginally on venter and on dorsum in longitudinal rows.

Dorsum.— Hair-like setae scattered across all body segments, typically longest marginally, sometimes in clusters around margin. Flagellate setae scant, scattered. Spiniform setae present in Echinicerya   only, scattered on head and thorax, distributed in distinct segmental clusters on abdomen. Simple multilocular pores of varying types found across all body segments in all genera. Compound multilocular pores present in Gigantococcus   only, arranged on all body segments. Open-centre pores present in some Icerya spp.   only, arranged in marginal clusters and clusters and transverse rows across head and thorax.

Venter.— Hair-like setae scattered medially to submarginally on head and thorax, and marginally and submarginally on abdomen. Flagellate setae scattered. Spiniform setae present in Echinicerya   only, dense marginally and submarginally, scattered on head, less dense between mid- and hindlegs. Simple multilocular pores of varying types found across all body segments in all genera. Compound multilocular pores present in Gigantococcus   only, found across all body segments. Open-centre pores present in some Icerya spp.   only, arranged in marginal clusters.

Description of first-instar nymph

Slide-mounted specimens.— Body elliptical. Antennae 6 segmented, apical segment elongate; hair-like setae present on each segment, apical segment with long setae. Eyespots conical, near antennal bases. Sensory pores, 5–6 µm in diameter, in cluster of 2 or 3 at each antennal base. Labium with spatulate setae at apex, hairlike setae anteriorly. Legs well developed; each trochanter with a long distal trochanteral seta on apical margin and with 2 campaniform sensilla on each face; claw with a pair of knobbed digitules extending beyond claw apex. Thoracic spiracles with elongate peritremes; pores absent from atrium, but usually with 1 or 2 pores positioned at opening. Cicatrix circular, on posteroventral abdomen. Abdominal spiracles in 2–4 pairs; pores absent from atrium. Anal tube with inner sclerotized ring of polygonal pores and external opening with ring of 6–9 multilocular pores each with circular centre and 5 or 6 outer loculi; opening surrounded by hair-like setae. Compound multilocular pores and open-centre pores are absent from first-instar nymphs of all species.

Dorsum.— Each side of head, prothorax and mesothorax with: (i) scattered hair-like and flagellate setae; (ii) scattered multilocular pores, and (iii) 1 marginal pair of hair-like setae on each segment. Each side of metathorax and each abdominal segment with: (i) 1 marginal pair of hair-like setae (one long, one short); (ii) a submarginal cluster of 1–3 multilocular pores; (iii) a submarginal cluster of 1–3 setae - one hair-like seta on either side of a flagellate seta (flagellate seta always present), and with a multilocular pore on either side of cluster; (iv) a submedial row of 1–5 multilocular pores, and (v) a medial group of 1 hair-like seta and 1 or 2 multilocular pores, with each group of seta and pore(s) closely abutting that on opposite side of body. Simple multilocular pores with bilocular and/or trilocular centre and 4–6 outer loculi.

Venter.— Each side of head and thorax with: (i) sparsely scattered hair-like and flagellate setae; (ii) one marginal seta on each segment and (iii) sparsely scattered multilocular pores. Each side of most abdominal segments with: (i) one marginal pair of hair-like setae, with one long, one short; (ii) one marginal multilocular pore; (iii) one submarginal short hair-like seta; (iv) one submarginal or submedial multilocular pore and (v) one submedial short hair-like seta. Apex of abdomen with 2–6 pairs of long hair-like setae. Multilocular pores with bilocular centre and 2–4 outer loculi.

Taxonomic notes. — The adult female of species in the tribe Iceryini   is defined by the following combination of features: (i) ventral cicatrices always present on abdomen only, (ii) 2–4 pairs of abdominal spiracles, and (iii) absence of spines in all life stages.