Valid Names Results

Rhodococcus perornatus (Cockerell & Parrott, 1899) (Coccidae: Rhodococcus)

Nomenclatural History

• Lecanium (Eulecanium) perornatum Cockerell & Parrott 1899: 236. Type data: CZECHOSLOVAKIA: Moravia, on Rosa canina.. Syntypes, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name
• Eulecanium perornatum (Cockerell & Parrott, 1899); Fernald 1903b: 191. change of combination
• Eulecanium bulgariense Wunn 1939: 703. Type data: BULGARIA: on rose.. Syntypes, female, junior synonym (discovered by KosztaKo1988F, 248). Notes: Depository of type material unknown.
• Rhodococcus rosophilus Borchsenius 1953: 284. Type data: RUSSIA: Krasnoyarsk Kray, Minusinsk, on rose.. Lectotype, female, by subsequent designation (Danzig1980b,289). Type depository: St. Petersburg: Zoological Museum, Academy of Science, Russia; junior synonym (discovered by Tsalev1966, 3).
• Rhodococcus perornatus (Cockerell & Parrott, 1899); Kosztarab & Kozár 1988: 248. change of combination
• Rodoccocus bulgariensis Negasu, et al. 2016: 4. misspelling of both genus and species names

Common Names

• rose soft scale KosztaKo1988F

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Foes:

Families: 3 | Genera: 4

Geographic Distribution

Keys

• DuroviSpUl2024: pp.490-491 ( Adult (F) First instar Second instar (F) Second instar (M) ) [Eulecaniinae in Ankara]
• Tang1991: pp.211 ( Adult (F) ) [China]

Remarks

• Systematics: By having a large number of marginal setae (14‒16) between the anterior spiracular clefts, the first-instar nymph of R. perornatus is easily distinguished from that of Physokermes hellenicus, which has only 6‒9 in this position. The second-instar male nymphs of R. perornatus are similar to those of Physokermes hellenicus in having a single submarginal line of tubular ducts and two spiracular setae in each spiracular area, but differ by having a short longitudinal line of tubular ducts on the head and prothorax on each side that is not present in P. hellenicus. The second-instar female of R. perornatus lacks quinquelocular pores on the dorsal submargins; this clearly separates it from that of Physokermes hellenicus, which has pores in this position. (Durović, et al, 2024)
• Structure: See color ohotograph in Kosztarab & Kozar (1988). First-instar nymph oval, orange to light red. Second-instar male nymph elongate oval; light red with thin glassy cover. Second-instar female nymph ovoid, light red. (Durović, et al, 2024)
• Biology: Develops one annual generation in Bulgaria; hibernation as second instar nympha; males and young females appear in April, while oviposition begins in mid-May (Tzalev, 1966). One annual generation in Hungary (Ordogh, 1995).
• Economic Importance: A pest of cultivated rose in Hungary (Ordogh, 1995) and Bulgaria (Tzalev, 1966). Tzalev (1966) reported on successful chemical control during the dormant season.
• General Remarks: Good description and illustration of adult female by Kosztarab & Kozar (1988).

Illustrations

Citations