Aspidiotinae

Smith-Pardo, Allan H., Evans, Gregory A. & Dooley, John W., 2012, A review of the genus Chrysomphalus Ashmead (Hemiptera: Coccoidea: Diaspididae) with descriptions of a new species and a new, related genus, Zootaxa 3570, pp. 1-24: 3-4

publication ID

http://doi.org/ 10.5281/zenodo.282977

publication LSID

lsid:zoobank.org:pub:68A889B1-51C1-40B2-A264-DE8AE782B94C

persistent identifier

http://treatment.plazi.org/id/0382231A-FFC2-FFB9-1398-FA92FA78FDE2

treatment provided by

Plazi

scientific name

Aspidiotinae
status

 

Key to the Aspidiotinae   ( Diaspididae   ) genera similar to the genus Chrysomphalus  

1 a. Paraphyses arising only from basal angles of lobes, not from an interlobular space, sometimes with a weak sclerotization close to paraphysis at basal angle of lobe............................................................... 2

1 b. Paraphyses arising from basal angles of lobes and at least one interlobular space, usually located more or less halfway between lobes..................................................................................... 5

2 a (1 a). Anal opening large, space between opening and posterior margin of pygidium not more than 2 x diameter of opening; L 2 and L 3 usually reduced to small points; paraphyses wide and robust; plates usually with fringed apices........................................................................................ Hemiberlesia Cockerell, 1897  

2 b. Anal opening small, space between opening and posterior margin of pygidium more than 2 x diameter of opening; L 2 and often L 3 well developed; paraphyses slender; plates variable................................................ 3

3 a (2 b). L 2 and L 3 well developed; plates usually well developed and with fringed apices..... Abgrallaspis Balachowsky, 1948  

3 b. L 3 not developed; L 2 developed but often only as small points; plates usually short, and spine-like, without fringed apices................................................................................................. 4

4 a (3 b). Paraphyses arising from lateral angle of L 1 typically elongate, slender and terminating in a heavily sclerotized knob.............................................................................. Clavaspis MacGillivray, 1921  

4 b. Paraphyses arising from lateral angle of L 1 not terminating in a heavily sclerotized knob.. Diaspidiotus Cockerell, 1897  

5 a (1 b). Lateral margin of pygidium entirely without plates or gland spines; paraphyses absent anterior to L 3 .............................................................................................. Targionia Signoret, 1869  

5 b. Lateral margin of pygidium with at least a few plates or gland spines; paraphyses present or absent anterior to L 3 ..... 6

6 a (5 b). Pygidium with 5 plates between L 1 and L 2; L 2 larger than L 1 with many short teeth and L 2 closer to L 3 than to L 1; 2 paraphyses present between L 1 and L 2 ................................................ Pentalaminaspis nov. gen.

6 b. Pygidium with fewer than 4 plates or gland spines between L 1 and L 2; L 2 not larger than L 1, and L 2 located closer to L 1 than to L 3; with 0 or 1 paraphyses present between L 1 and L 2 .............................................. 7

7 a (6 b). Pygidial margin anterior to L 4 not heavily sclerotized, without a series of short paraphyses; plates anterior to L 3 conspicuous, branched, fringed or clubbed, their length usually exceeding that of lobes; anus usually located closer to posterior margin than to vulva................................................................................ 8

7 b. Pygidial margin anterior to L 4 heavily sclerotized, often with a series of short paraphyses; plates anterior to L 3 not as long and conspicuous, and may be branched, fringed or spine-like, their length usually not exceeding that of lobes; anus usually in middle or closer to vulva than posterior margin....................................................... 10

8 a (7 a). Paraphyses absent or, if present, poorly developed, short, not exceeding length of lobes; paraphyses in L 2 –L 3 interlobular space absent or not pronounced....................................... Dynaspidiotus Thiem & Gerneck, 1934  

8 b. Paraphyses well-developed, long and slender, each as long as, or exceeding, length of lobes; paraphyses in L 2 –L 3 interlobular space well-developed, long and slender............................................................. 9

9 a (8 b). Prosoma of mature female strongly sclerotized, reniform shaped with lateral lobes more or less enclosing pygidium in most species; paraphyses relatively short, about as long as lobes in most species.. Aonidiella Berlese & Leonardi, 1896  

9 b. Prosoma of mature female, if strongly sclerotized, not reniform in shape and with lateral lobes not enclosing pygidium; paraphyses relatively long, much longer than lobes in most species.................. Chrysomphalus Ashmead, 1880  

10 a (7 b). Pygidium broad at the base, elongate and tapering apically to a point, lateral margins tending to be slightly concave; with 3 pairs of pygidial lobes; L 4 reduced to a point or absent; margin anterior to L 4 heavily sclerotized; and with or without an extended series of well-developed, quite long, closely set paraphyses; often with most or all paraphyses between L 1 and L 4 similar in length................................................................................. 11

10 b. Pygidium usually short and broad, not tapering apically to an acute point, lateral margins tending to be convex; usually with 4 or 5 pairs of pygidial lobes; L 4 usually well developed;; margin anterior to L 4 lightly to heavily sclerotized, paraphyses anterior to L 4 absent, weakly developed or rather few; often with most or all paraphyses between L 1 and L 4 variable in length................................................................................... 13

11 a (10 a). Pygidium with 4 or more pairs of well-developed pygidial lobes; margin anterior to L 4 without distinct paraphyses; plates between lobes long, distinctly longer than length of lobes................................ Marginaspis Hall, 1946  

11 b. Pygidium with 3 pairs of pygidial lobes; margin anterior to L 4 with paraphyses; plates between lobes short to moderate in length, not distinctly longer than length of lobes......................................................... 12

12 a (11 b). Pygidium tapering apically an acute point.............................................. Acutaspis Ferris, 1941  

12 b. Pygidium tapering apically to a rounded or truncate apex......................... Lindingaspis MacGillivray, 1921  

13 a (10 b). Pygidium with longest paraphyses arising from the lateral corner of base of lobes (usually with 2 paraphyses between L 1 and L 2 and between L 2 and L 3); dorsum of pygidium divided into sclerotized areas; large V-shaped reticulate sclerotized area on A 6 always present.............................................. Crenulaspidiotus MacGillivray, 1921  

13 b. Pygidium with longest paraphyses in interlobular space(s); usually with 1 paraphysis between L 1 and L 2 and another between L 2 and L 3; dorsum of pygidium not divided into sclerotized areas and without a large V-shaped reticulate sclerotized area on A 6 .................................................................................. 14

14 a (13 b). Anterior margin of head of mature female distinctly sclerotized, differentiated from lateral margin, resembling a “cap”.............................................................................. Mycetaspis Cockerell, 1897  

14 b. Anterior margin of head of mature female not distinctly sclerotized or differentiated from lateral margin, not resembling a “cap”...................................................................... Melanaspis Cockerell, 1897