Valid Names Results

Brevennia operta (Borchsenius, 1949) (Pseudococcidae: Brevennia)

Nomenclatural History

• Heterococcopsis opertus Borchsenius 1949: 265. Type data: TADZHIKISTAN: Gissarskii Ridge, on Dactylis glomerata. Syntypes, female, Type depository: St. Petersburg: Zoological Museum, Academy of Science, Russia; accepted valid name
• Heterobrevennia opertus (Borchsenius, 1949); Kaydan 2011: 50-54. change of combination
• Brevennia (Heterobrevennia) operta (Borchsenius, 1949); Danzig & Gavrilov-Zamin 2012: 236. change of combination requiring emendation of specific epithet for agreement in gender

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 4

Foes:

Families: 1 | Genera: 3

Geographic Distribution

Keys

• DanzigGa2014: pp.585-587 ( Adult (F) ) [Palaearctic Brevennia species]
• DanzigGa2013: pp.464 ( Adult (F) ) [A Key to the Species of the Genus Brevennia (Including Four Palaearctic Species Not Known from Russia and Adjacent Countries)]
• DanzigGa2012: pp.236 ( Adult (F) ) [The key for the species of the Heterobrevennia]
• DanzigGa2012a: pp.788-789 ( Adult (F) ) [Key to Brevennia and Heterobrevennia]
• Kaydan2011: pp.54 ( Adult (F) ) [Key to Heterobrevennia species]
• Tang1992: pp.576 ( Adult (F) ) [Palaearctic & Oriental regions]
• BazaroNu1975: pp.63 ( Adult (F) ) [East Pamir]
• Borchs1949: pp.264 ( Adult (F) ) [Palaearctic region]

Remarks

• Systematics: H. opertus resembles H. kozari but differs in having (characters of H. kozari in brackets): (i) 7 pairs of cerarii (5), (ii) trilocular pores on dorsum few, generally restricted to the posterior abdominal segment, cerarii and ostioles (many trilocular pores scattered throughout dorsum), (iii) transcluent pores absent on hind coxa (present), and (iv) dorsal multilocular pores scattered all over bodypresent (present only on abdominal segments VI and VII). H. opertus resembles H. gullanae, but H. opertus differs in having the following combination of characters (characters of H. gullanae in brackets): (i) multilocular pores absent on the head (two groups of multilocular pores on the head), (ii) cerarii numbering 7 pairs (6), (iii) trilocular pores on dorsum few, generally restricted to posterior abdominal segment, and in cerarii and ostioles many trilocular pores present throughout dorsum), (iv) antennae 9 segmented (8, rarely 7 segmented ).
• Structure: Adult female: Body elongate oval, 2.82-3.20 mm long, 1.56-2.20 mm wide. Antennae generally 8 or 9 segmented (but occasionally 7 when 2nd and 3rd segments fused). Eyes present on margin. Labium 3 segmented. Posterior spiracles slightly larger than anterior spiracles. Legs well developed, with translucent pores on hind femur and tibia; claw with a denticle; tarsal digitules setose, claw digitules capitate, broader than tarsal digitules. Both anterior and posterior ostioles well developed. Multilocular disc pores limited to margins of both body surfaces and to posterior abdominal segments. Quinquelocular pores smaller than multilocular pores, scattered over both body surfaces. Trilocular pores present on dorsum. Oral-collar tubular ducts elongate, generally situated on body margin. Anal ring with 6 setae.
• General Remarks: Good description of the adult female given by Borchsenius (1949) and by Tang (1992).

Illustrations

Citations