Valid Names Results

Heliococcus summervillei Brookes, 1978 (Pseudococcidae: Heliococcus)

Nomenclatural History

• Heliococcus summervillei Brookes 1978: 241. Type data: Holotype: AUSTRALIA: Queensland, on Paspalum dilatatum, and paratype females, PAKISTAN: Peshawar, on Saccharum officinarum. Holotype, female, Type depository: Canberra: Australian National Insect Collection, CSIRO Entomology, Australia; accepted valid name Illustr.
• Novonilacoccus oryzae Ghosh & Ghose 1987: 5. Type data: INDIA: West Bengal, Kalyani, on Oryza sativa. Holotype, female, Type depository: Kalyani: Department of Agricultural Entomology, Bihan Chandra Krishi Viswavidyalaya, West Bengal, India; junior synonym (discovered by Willia2004a, 349). Illustr.

Common Names

Ecological Associates

Hosts:

Families: 2 | Genera: 14

Foes:

Families: 2 | Genera: 4

Geographic Distribution

Keys

• Willia2004a: pp.343 ( Adult (F) ) [Heliococcus species of southern Asia]
• Tang1992: pp.458 ( Adult (F) ) [Palaearctic & Oriental regions]

Remarks

• Systematics: Once slide-mounted, Heliococcus Šulc has a unique type of crateriform tubular duct that makes it difficult to confuse with any other genus of mealybug . Slide-mounted characters and illustrations of H. summervillei are given in detail by Brookes (1978).
• Structure: Adult females of H. summervillei are about 2–4 mm in body length, while the tiny crawlers (the first-instar nymph mobile dispersal stage) are less than 0.5 mm in length. Immature (nymph) and unmated female mealybugs are a creamy-white color, with adult females turning pink after mating (Hauxwell, 2018; Hauxwell et al., 2022a). Males turn pink ahead of pupation and are pink in their winged adult form. (Powell & Hauxwell, 2026)
• Biology: Heavy infestations were observed on leaves of the host (Ghosh & Ghose, 1987). Mature female mealybugs and pupae of males were mainly found in the crown and dense thatch layers of grasses during the warmer, wetter conditions of late summer January to March) in both years. Mealybugs in the field appear to mate and females produce young in the protection of the dense crown and thatch layer of grasses in mid to late summer.. (Hauxwell, 2022)
• Economic Importance: Summerville (1928) first reported on this species as "mealy bug" and presented observations on its economic importance, life history, control and natural enemies. Brinon et al. (2004) recorded this species from New Caledonia, reporting of severe damage to pasture grasses from 1998 to 2003. In 2003 the pest populations were almost completely reduced, probably due to unexplained natural causes. In Texas, it has been noted on and damaging Bermudagrass, Bahia grass, Johnsongrass, hay grazer (Sorghum-sudangrass), several bluestem species, and St. Augustine turfgrass. (Biles, et al. 2026a)
• General Remarks: Description and illustration of adult female by Brookes (1978), Ghosh & Ghose (1987) [as Novonilacoccus oryzae] and by Williams (2004a). Description and illustration of first-instar nymph, second-instar female nymph and third-instar female nymph given by Ghosh & Ghose (1987) [as Novonilacoccus oryzae]. Description and illustration of adult male by Ghosh & Ghose (1989) [as Novonilacoccus oryzae].

Illustrations

Citations