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| A Description of Common Aphids Found in Hawaii | |
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Descriptions are based upon a workshop given by Manya B. Stoetzel of the USDA Systematic Entomology Laboratory on June 15-19, 1992.
The following descriptions apply to adult aphids. For information on how to identify an adult aphid from an immature aphid, click here.
Available Descriptions:
Acyrthosiphon
-(Metopolophium) - dirhodum (Walker)
Acrythosiphon
-(Rhodopium)- porosum (Sanderson)
Aphis craccivora (Koch)
Aphis gossypii (Glover)
Aphis spiraecola (Patch)
Aulacorthum solani
(Kaltenbach)
Brachycaudus
helichrysis (Keltenbach)
Brevicoryne brassicae (L.)
Cavariella aegopodii
(Scopoli)
Cerataphis spp.
Cinara
spp.
Dactynotus -(Uroleucon)-
spp.
Macrosiphoniella spp.
Macrosiphum euphorbiae
(Thomas)
Mysus persicae (Sulzer)
Pentalonia
nigronervosa (Coquerel)
Rhopalosiphum maidis
(Fitch)
Rhopalosiphum padi (L.)
Periphyllus spp. -
dimorphs
Acyrthosiphon
-(Metopolophium) - dirhodum (Walker)
cauda
pale, long, with 3-4 pairs of lateral setae and 1-3 dorsal setae
cornicles
pale with blackish tip, long, cylindrical, no reticulations
antenna
aptera - III with 1-2 secondary sensoria; pale
alata - III with 16-28 secondary sensoria; IV with no secondary
sensoria; blackish beyond base of III
abdomen
in life, may have dark green strip down dorsum
wings
no markings
frontal tubercles
prominent
Acrythosiphon
-(Rhodopium)- porosum (Sanderson)
cauda
pale, long, with 2 pairs of lateral setae
cornicles
pale, long, cylindrical, no reticulations
antenna
aptera - III with 5-13 secondary sensoria; dusky beyond base of
III
alata - III with 12-20 secondary sensoria; IV with 6-9 secondary
sensoria; black beyond base of III
abdomen
no dorsal markings
wings
no markings
frontal tubercles
prominent
Aphis craccivora
(Koch)
cauda
black, medium length, with 3-4 pairs of lateral setae, and 1
dorsal seta
aptera
alata
cornicles
black, no reticulations
antenna
aptera - III with no secondary sensoria, pale
alata - III with 4-7 secondary sensoria and at least one
noticeably larger than others, IV with no secondary sensoria pale
abdomen
aptera - dorsum with black patch which is variable in size
alata - dorsum with black bands on all segments
frontal tubercles
not prominent
aptera
alata
legs
color - white (contrasting with black body) with dark tips
wings
no markings
Aphis gossypii
(Glover)
cauda
pale to dusky, medium length, with 2-4 pairs of lateral setae
(often curved at 90° angle)
cornicles
black, no reticulations
antenna
aptera - III with no secondary sensoria; pale to dusky
alata - III with 3-12 secondary sensoria (all same size); IV with
0-2 secondary sensoria, dusky
abdomen
aptera - no dorsal markings, reticulated pattern on dorsum
alata - no black, dorsal bands on segments I to III and usually
none on IV and V
frontal tubercles
not prominent
aptera
alata
legs
color - pale with dark tips
wings
no markings
Aphis
spiraecola (Patch)
cauda
black, medium length, with 3-5 pairs of lateral setae and 3
dorsal setae
cornicles
black, no reticulations
antenna
aptera - III with no secondary sensoria; pale
alata - III with 4-10 secondary sensoria; IV with 0-4 secondary
sensoria; pale
abdomen
no dorsal markings
wings
no markings
frontal tubercles
not prominent
Aulacorthum
solani (Kaltenbach)
cauda
pale, long, with 3 pairs of lateral setae and 1 dorsal seta
cornicles
pale with blackish tip, long, cylindrical, with distinct flange
and a few indistinct transverse reticulations
antenna
aptera - III with 1-6 secondary sensoria; pale with black tips on
end of segments
alata - III with 8-13 secondary sensoria; IV with no secondary
sensoria dusky beyond base of III
abdomen
alata - broken dorsal dashes on segments
frontal tubercles
prominent
aptera
alata
wings
no markings
Brachycaudus
helichrysis (Keltenbach)
cauda
pale, short, broadly rounded, with 2-3 pairs of lateral setae and
sometimes 1 dorsal seta
aptera
alata
cornicles
pale to black, short, smooth, with small flange
aptera
alata
antenna
aptera - III with no secondary sensoria; pale
alata - III with 20-33 secondary sensoria; IV with 1-12 secondary
sensoria; blackish
abdomen
aptera - pale, dorsal surface granular
alata - dorsum with black patch
frontal turbercles
extending beyond venter
aptera
alata
legs
color - pale to dusky
wings
no markings
Brevicoryne
brassicae (L.)
cauda
pale to dusky, short, triangular, with 2-3 pairs of lateral setae
and 2-3 dorsal setae
aptera
alata
cornicles
dusky, slightly swollen, short
aptera
alata
antenna
aptera - III with no secondary sensoria; III longer than IV + V;
pale to dusky
alata - III with 40-50 almost tuberculate secondary sensoria; IV
with no secondary sensoria; III longer than IV + V; dusky
abdomen
aptera - broken, dark, dorsal bands on all segments
alata - broken, dark, dorsal bands on all segments
frontal tubercles
not prominent
aptera
alata
legs
color - dusky
wings
no markings
Cavariella
aegopodii (Scopoli)
cauda
pale to dusky, medium, with 2 pairs of lateral setae and I dorsal
seta
cornicles
pale to dusky, clavate, with oblique flange
antenna
aptera - III with no secondary sensoria; pale with black tips on
end of segments
alata - III with 14-23 secondary sensoria; IV with no secondary
sensoria; black
abdomen
aptera - pale, dorsal surface punctate
alata - broken, dark, dorsal band on all segments
supracaudal process
present on abdominal VIII
aptera - as long as cauda
alata - as long as wide
frontal tubercles
not prominent
aptera
alata
legs
color - pale to dusky with tips of tibiae black in alata
wings
no markings
Cerataphis spp.
cauda
knobbed, anal plate bilobed
cornicles
ring on a raised base
antenna
aptera - 4-segmented; III with no secondary sensoria
alata - 5-segmented; annular secondary sensoria on III, IV, and V
abdomen
aptera - aleyrodiform
vertex in aptera with two hornlike projections
wings
no markings
Cinara spp.
cauda
always broader than long, semilunar or rounded
cornicles
rim on conelike or mammiform hairy base
antenna
aptera - hairy; secondary sensoria protruding, variable on III,
IV, and V
alata - hairy; secondary sensoria protruding, variable on III,
IV, and V
abdomen
hairy
frontal tubercles
lacking, head hairy
aptera
alata
wings
no markings
Dactynotus
-(Uroleucon)- spp.
cauda
pale or dark, long, with several pairs of lateral and dorsal
setae
aptera
alata
cornicles
long, cylindrical, reticulated area less than 1/3 of total
length; entirely dark or dark with bases pale
antenna
aptera - secondary sensoria variable on III; usually dusky to
black
alata - secondary sensoria variable on III; usually dusky to
black
abdomen
abdominal setae usually on pigmented scleroites
frontal tubercles
prominent
aptera
alata
rostrum
broad to slender, but never needlelike
legs
color - tarsi and tips of femor usually black; often entire
tibiae black
Macrosiphoniella
spp.
cauda
dusky to black, long, with several pairs of lateral and dorsal
setae
cornicles
long, cylindrical, reticulated area 1/3 or more of total length
entirely dark or dark with bases pale
antenna
aptera - secondary sensoria variable on III, rarely on IV;
usually dusky to black
alata - secondary sensoria variable on III, rarely on IV; usually
dusky to black
abdomen
abdominal setae usually on pigmented scleroites
rostrum
slender to stiletto shaped, said to be needlelike
frontal tubercles
diverging
legs
tarsi and tips of femora usually black; often entire tibiae black
Macrosiphum
euphorbiae (Thomas)
cauda
pale, long, with 4-5 pairs of lateral setae and 1-2 dorsal setae
cornicles
long, cylindrical, reticulated area about equal to length of hind
tarsal II and often appears to be “indented”
aptera - pale with dusky tip
alata - pale only at base
antenna
aptera - III with 2-6 secondary sensoria, pale with dusky tips on
III, IV, V and VI entirely dusky
alata - III with 10-18 secondary sensoria; IV with no secondary
sensoria, black beyond base of III
abdomen
no dorsal markings
frontal tubercles
prominent
aptera
alata
legs
pale with tips of tibiae dusky
wings
no markings
Mysus persicae
(Sulzer)
cauda
pale, medium, with 3 pairs of lateral setae
cornicles
pale to dusky, medium, cylindrical to slightly swollen
antenna
aptera - III with no secondary sensoria, pale
alata - III with 2-15 secondary sensoria; IV with no secondary
sensoria
abdomen
aptera - pale, dorsal surface finely rugose
alata - dorsum with black patch
frontal tubercles
very prominent
aptera
alata
rostrum
last rostral segment with 2-3, rarely 4, lateral setae
legs
pale with tarsi and tips of tibiae dusky
wings
no markings
Pentalonia
nigronervosa (Coquerel)
cauda
pale, short, with 2 pairs of lateral setae anterior to decided
constriction
cornicles
pale to dusky, medium, cylindrical to slightly swollen
antenna
aptera - III with no secondary sensoria; pale
alata - III with 8-12 secondary sensoria; IV with 12-15 secondary
sensoria; V with 4-6 sensoria; blackish
abdomen
no markings, but heavily imbricated
wings
all veins broadly banded
radius coalesced with anterior branch of medius
frontal tubercles
well developed
legs
pale with tips of tibiae dusky
Rhopalosiphum
maidis (Fitch)
cauda
dusky, short, with broad neck and rounded tip; 2 (rarely 3) pairs
of lateral setae, 1 dorsal
cornicles
dusky, short, imbricated, slightly swollen, small flange
antenna
aptera - III with no secondary sensoria; pale to dusky
alata - III with 14-22 secondary sensoria; IV with 0-8 secondary
sensoria; V with 0-3 secondary sensoria; dusky
abdomen
aptera - no dorsal markings
alata - no black; dorsal bands on segments I-III and usually none
on IV and V
frontal tubercles
not prominent
aptera
alata
legs
dusky
wings
no markings
Rhopalosiphum
padi (L.)
cauda
dusky, short, with broad neck and rounded tip; 2-3 pairs of
lateral setae and sometimes 1 dorsal seta
cornicles
dusky, short, only lightly imbricated, slightly clavate
antenna
aptera - III with no secondary sensoria; dusky
alata - III with 11 - 23 secondary sensoria; IV with 3- 9
secondary sensoria; V with 1-2 secondary sensoria; dusky
abdomen
aptera - dorsum reticulated
alata - no dorsal markings
frontal tubercles
not prominent
aptera
alata
legs
dusky
wings
no markings
Periphyllus
spp. - dimorphs
cauda
rounded
cornicles
not usually evident
antenna
4-segmented; no secondary sensoria
abdomen
P. acericola (Walker) - marginal setae long
P. testudinaceus (Fernie) - marginal setae flabellate
P. californiensis (Shinji) - marginal setae flabellate