Icerya jacobsoni Green

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 : 82-83

Icerya jacobsoni Green

Icerya jacobsoni Green, 1913: 316 .

Crypticerya jacobsoni (Green) ; Morrison (1928: 203).

Icerya jacobsoni Green ; Unruh & Gullan (2008: 41) .

Unmounted material. Adult female flattish, reddish orange and covered in white mealy secretion arranged in tufts on median and submedian areas, leaving submarginal area bare, forming 20 long curling waxy extensions around margin, stoutest at anterior end, becoming more slender towards posterior end. Legs and antennae reddish (adapted from Green, 1913).

Slide-mounted material. Adult female elongate to oval, 5.6–6.3 mm long, 3.8–4.7 mm wide (lectotype 6.3 mm long, 4.7 mm wide). Antennae 10 segmented. Eyes, mouthparts and legs as for tribe. Thoracic spiracles as for genus; derm around atrial opening with 5 or 6 simple multilocular pores, each 10–11 µm in diameter, with bilocular or trilocular centre and 6–8 outer loculi. Short hair-like setae completely covering derm, longest forming marginal clusters and clustered around anal opening. Flagellate setae as for genus, longest in clusters around ventral margin and ventral head and thorax. Open-centre pores absent. Ovisac absent. Marsupium absent. Simple multilocular pores, each 10–11 µm in diameter, with bilocular (rarely trilocular) centre and 6–10 outer loculi and appearing stalked in profile, covering dorsal surface. Simple multilocular pores, each 12–13 µm in diameter, with trilocular (rarely quadrilocular) centre and 6–10 outer loculi and appearing stalked with protruding projection visible in profile, forming dense band around margin. Simple multilocular pores, each 10–12 µm in diameter, with thickened outer rim and with bilocular or trilocular centre and 4–8 outer loculi, scattered on ventral head and thorax; similar pores, each with trilocular, quadrilocular or quinquelocular centre and 4–8 outer loculi, scattered on ventral abdomen. Vulva as for genus, surrounded by short hair-like setae and typical multilocular pores, each pore 12–13 µm in diameter, with bilocular centre and 8–12 outer loculi. Cicatrices oval, numbering 3, central cicatrix largest. Abdominal spiracles in 3 pairs. Anal tube as for genus; anal opening as for genus, surrounded by robust hair-like setae and typical pores, each pore 10–12 µm in diameter, with bilocular or trilocular centre and 8–10 outer loculi.

Type data. INDONESIA: Java, Semarang , ex Dombeya acutangula .

Type material. Lectotype here designated: ad ♀, “ Icerya /jacobsoni/seminuda, Green/From/ Dombeya acutangula /Samarang, Java./coll. E. Jacobson. /no.1301 etc.” ( BMNH) . Paralectotypes: 2 ad ♀♀, 3 1 st -instar nymphs (same slide as lectotype).

Taxonomic notes. Refer to the I. jacobsoni group for further discussion of similar species. The lectotype on far right of slide when slide label is held to the left.