Valid Names Results

Trionymus diminutus (Leonardi, 1918) (Pseudococcidae: Trionymus)

Nomenclatural History

Dactylopius calceolariae; Maskell 1884: 138. misidentification
Pseudococcus diminutus Leonardi 1918: 198. Type data: ITALY: Bordighera (Liguria), on Phormium sp.. Lectotype, female, by subsequent designation (Marott1992,69). Type depository: Portici: Dipartimento de Entomologia e Zoologia Agraria di Portici, Universita di Napoli Federico II, Italy; accepted valid name Illustr.
Trionymus calceolariae; Ferris 1918d: 67. misidentification
Trionymus diminutus (Leonardi, 1918); Morrison 1925a: 495. change of combination
Erium diminutum (Leonardi, 1918); Lindinger 1935a: 122. change of combination
Balanococcus diminutus (Leonardi, 1918); Cox 1987: 28. change of combination
Trionymus diminutus (Leonardi, 1918); Danzig & Gavrilov-Zimin 2015: 131-133. revived combination (previously published)

Common Names

New Zealand flax mealybug McKenz1967

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Asphodelaceae

Phormium | BenDov1994 Cox1987 Marott1992a Morris1925a
Phormium colensoi | BenDov1994 Cox1987
Phormium tenax | Borchs1949 Cox1987 DownieGu2004 Ferris1950b Leonar1920 Marott1992a Tang1992

Foes:

Families: 1 | Genera: 3

Coccinellidae

Chilocorus renipustulatus | Borchs1949
Nephus redtenbacheri | Borchs1949 | (= Scymnus redtenbacheri)
Propylaea quattuordecimpunctata | Borchs1949

Geographic Distribution

Countries: 12

Australia | Borchs1937a Leonar1920 Marott1992a

New South Wales | BenDov1994 Willia1985
South Australia | BenDov1994

China | Marott1992a Tang1992 TangHaTa1992

France | Foldi2001 MatileGePi2004

Georgia (Republic of) | BatsanKaKi2017 Borchs1949 Hadzib1983

Adzhar ASSR | Borchs1937a Borchs1949

Ireland | OConnoGeMa2013

Italy | Borchs1937a Borchs1949 Ferris1950b Leonar1918 LongoMaPe1995 Marott1987a Marott1992a

New Zealand | BenDov1994 Borchs1949 Britti1938 Cox1987 Ferris1950b Marott1992a McKenz1967

Russia

Moscow Oblast | Borchs1937a Borchs1949

Taiwan | ChenWoWu2012

Ukraine

L'vov Oblast | Danzig1998a
Odessa Oblast | Danzig1998a

United Kingdom

Channel Islands | Willia1962
England | Whiteh1999
Isle of Man | WilliaMa2012
Scilly Isles | WilliaMa2012

United States

California | BenDov1994 Borchs1937a Borchs1949 Borchs1950b DownieGu2004 Marott1992a McKenz1967 Morris1925a

Keys

YerlikBaKa2021: pp.326-327 ( Adult (F) ) [Trionymus of the Palearctic region]
DanzigGa2015: pp.99-106 ( Adult (F) ) [Palaearctic Trionymus species]
Tang1992: pp.153 ( Adult (F) ) [Palaearctic region]
Cox1987: pp.20 ( Adult (F) ) [New Zealand] Key as: Balanococcus diminutus
Willia1985: pp.366 ( Adult (F) ) [Australia]
MillerMc1973: pp.532 ( Adult (F) ) [North America]
McKenz1967: pp.461 ( Adult (F) ) [U.S.A., California]
Willia1962: pp.61 ( Adult (F) ) []
McKenz1961: pp.48 ( Adult (F) ) [North America]
McKenz1960: pp.765 ( Adult (F) ) [North America ]
Ferris1953a: pp.483 ( Adult (F) ) [North America]
Ferris1950b: pp.252 ( Adult (F) ) [North America]
Borchs1949: pp.96 ( Adult (F) ) [Palaearctic region]

Remarks

Systematics: The records of this species from Formosa by Takahashi (1928a, 1928b) probably refer to Dysmicoccus boninsis.
Structure: Colour photograph of adult female by Matile-Ferrero et al. (2004). Female body broadly oval, up to 6 mm long, pink in life. Antennae 8-segmented. Legs normally developed; hind coxae with translucent pores. Anal apparatus complete. Both pairs of ostioles well developed. Circulus large, rounded. (Danzig & Gavrilov-Zimin, 2015)
Economic Importance: Natural enemies listed by Borchsenius (1949). In the United Kingdom, it is always found on New Zealand Flax (Phormium tenax, Xanthorrhoeaceae) and is occasionally a highly damaging pest, even killing plants (Williams & Malumphy, 2012).
General Remarks: Good description and illustration of the adult female given by Leonardi (1920), Morrison (1925), Ferris (1950b), McKenzie (1967) and by Cox (1987).Good description of the adult female given by Borchsenius (1949) and by Tang (1992).

Illustrations

Citations

BatsanKaKi2017: distribution, host, 263
BenDov1994: 58
Borchs1937a: description, distribution, host, illustration, taxonomy, 165, 166
Borchs1949: biological control, description, distribution, host, illustration, taxonomy, 150-152
Britti1938: description, distribution, host, taxonomy, 342, 343
ChenWoWu2012: distribution, taxonomy, 299
Cox1987: description, distribution, host, illustration, taxonomy, 28, 29, 128
Danzig1998a: distribution, host, taxonomy, 160
DanzigGa2014: illustration, 13
DowellGiJe2016: distribution, 118
DownieGu2004: distribution, host, molecular data, phylogeny, 258-259
ErensoBlGo2023: phylogeny, 4
Ferris1950b: description, distribution, host, illustration, taxonomy, 261-262
Foldi2001: distribution, 303-308
FoldiGe2018: distribution, list, 12
HardyGuHo2008: molecular data, phylogeny, taxonomy, 51-71
Kiritc1936: distribution, host, 75
KondoWa2022a: distribution, host, list, 25
LaflinGuPa2004: distribution, host, 475-477
Leonar1918: description, distribution, host, illustration, taxonomy, 198-201
Leonar1920: description, distribution, host, illustration, taxonomy, 397-399
Lindin1935a: taxonomy, 122
LongoMaPe1995: distribution, 117
MalumpBa2012: distribution, economic importance, host, 18,38
MalumpHa2012: distribution, host, 195
MalumpSa2014: distribution, 23
Marott1987a: distribution, host, 113
Marott1992a: distribution, host, taxonomy, 69
MatileGePi2004: distribution, host, 35-37
McKenz1967: description, distribution, host, illustration, taxonomy, 465, 466
Morris1925a: description, distribution, host, illustration, taxonomy, 495, 496
OConnoGeMa2013: distribution, host, 42
Poutie1922: biological control, 3-28
RenAsHu2017: DNA, phylogeny, 4, 6
Tang1992: description, distribution, host, taxonomy, 161
Tang2001: distribution, 3
TangHaTa1992: distribution, host, 3
Tao1999: distribution, host, taxonomy, 30
Whiteh1999: distribution, host, 187-188
Willia1962: distribution, host, 61
Willia1985: distribution, host, taxonomy, 370-371
Willia2017a: catalog, list of species, 246
WilliaMa2012: distribution, illustration, 83,84,85-86
YerlikBaKa2021: key, 326