Valid Names Results

Trionymus caucasicus (Danzig, 1985) (Pseudococcidae: Trionymus)

Nomenclatural History

• Balanococcus caucasicus Danzig 1985: 116. Type data: RUSSIA: Karachay-Cherkessia AR, Teberda State Reserve, Gonachkhir River, on grass. Holotype, female, Type depository: St. Petersburg: Zoological Museum, Academy of Science, Russia; accepted valid name Illustr.
• Trionymus caucasicus (Danzig, 1985); Danzig & Gavrilov-Zimin 2015: 118-120. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 2

Geographic Distribution

Keys

• YerlikBaKa2021: pp.326-327 ( Adult (F) ) [Trionymus of the Palearctic region]
• DanzigGa2015: pp.99-106 ( Adult (F) ) [Palaearctic Trionymus species]
• LiWu2014: pp.270 ( Adult (F) ) [Key to Balanococcus species of China] Key as: Balanococcus caucasicus
• Danzig1998a: pp.154 ( Adult (F) ) [Russia] Key as: Balanococcus caucasicus
• Tang1992: pp.128 ( Adult (F) ) [Palaearctic & Oriental regions] Key as: Balanococcus caucasicus
• Koteja1988a: pp.122 ( Adult (F) ) [World] Key as: Balanococcus caucasicus

Remarks

• Systematics: Danzig & Gavrilov-Zimin provided a new generic concept of Balanococcus, regarding the grouping of trilocular pores near the midline of the body to be an important and unique character. This was in agreement with Williams (2004), but eliminated Balanococcus as a genus. Since they determined that this species could not belong in the genus Pseudococcus, they transferred it to Trionymus.
• Structure: Adult female body elongate-oval, up to 4 mm long, brown in life. Antennae 7-segmented. Legs small; hind coxae with numerous translucent pores present also on adjacent cuticle of metathorax. Anal apparatus with reduced number of pores and spinulae; Both pairs of ostioles present. Circulus absent. (Danzig & Gavrilov-Zimin, 2015)
• Biology: Occurring under the leaf sheaths of the host plant.
• General Remarks: Good description and illustration of the adult female given by Danzig (1985). Good description of the adult female given by Koteja (1988a) and by Tang (1992).

Illustrations

Citations