Valid Names Results

Cystococcus campanidorsalis Semple, Cook & Hodgson, 2015 (Eriococcidae: Cystococcus)

Nomenclatural History

• Cystococcus campanidorsalis Semple, Cook & Hodgson 2015: 296. Type data: AUSTRALIA: Queensland, Lockyer National Park (–27.452, 152.23), on Corymbia trachyphloia (Myrtaceae), 7/19/2013, by T.L. Semple. Holotype, female, male, and first instar, by original designation Type depository: Brisbane: Queensland Museum, Queensland, Australia; accepted valid name Illustr.

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• Hodgso2020: pp.84 ( Adult (M) ) [Cystococcus species]
• SempleGuHo2015: pp.295-296 ( Adult (F) ) [Key to species of Cystococcus]
• SempleGuHo2015: pp.296 ( Adult (M) ) [Key to species of Cystococcus]

Remarks

• Systematics: Abdominal segmentation on the dorsal surface is not visible in C. echiniformis and C. pomiformis, but is defined in C. campanidorsalis by light sclerotization between segments and a transverse row of setae and pore plates on each segment. Dissection revealed the abdominal, cuticular attachment points of the hindgut and oviduct, and confirmed the hindgut to be blind-ended with no anal opening. The oviduct appears attached to the cuticle seven or eight abdominal segments anterior to the dorsal button, on what appears to be the venter in slide-mounted specimens. That is, dorsal abdominal segments ~III through IX appear ventral and anterior to the button. This would place the button dorsally, on abdominal segment(s) II and/or III. (Semple, et al., 2015) Females of C. campanidorsalis have dorsal buttons most closely resembling those of C. pomiformis, but flaring out at the base in a bell shape. These two species also can be distinguished by the pattern of pore plates on the venter of adult females, anterior to the vulva. Cystococcus campanidorsalis has clear, transverse bands of pore plates, in contrast to the unpatterned clustering on C. pomiformis and C. echiniformis. Adult males of C. campanidorsaliscan be distinguished from those of C. pomiformis and C. echiniformis by the presence of numerous broad, fleshy setae on the antennal pedicel and the absence of digitate bristles on the flagellum.
• Structure: Galls sub-spherical in shape (mean height : diameter ratio = 1 : 1.09); height 18–28mm (mean = 21 mm), diameter 18–28mm (mean = 23 mm) and side wall thickness 3–7mm (mean = 4.5 mm). Gall surface usually with a loose, flaky outer layer, similar to bark that flakes off juveniles of host Corymbia trachyphloia, and light to dark mottled brown in colour; paler coloured, slightly flattened or recessed ring around opening in some individuals. (Semple, et al., 2015)
• General Remarks: Detailed description, photographs and illustrations in Semple, et al., 2015.

Illustrations

Citations