6
ENTOMOLOGICAL SOCIETY
Mr.
Caudellmentioned
that hehad
observed aCalosoma
larvaengaged
in eating the purslane larva before referred to.The
beetle larvaseemed
to be blind. Dr.Howard,
speaking of the sight ofinsects, said that itwas by no means
proved that in sects with eyes see asdo human
beings.He
referredto thework
of
Von
Beetheon
thePsychology
ofAnts, Bees, andWasps
as bearingoutthis statement.The
paper for theeveningwas by
Dr. Dyar,and was
entitled:
A REVIEW OF THE SPECIES OF HAPLOA.
By HARRISON G. DYAR.
The
genusHaploa
comprises a series ofclosely alliedforms ofbroad-
winged
Arctiidae, formerly referred to theEuropean
genus Callimorpha. It has beenthe subject of considerable discussionamong American
entomologists. ProfessorJ. B.Smith
gave agood
account ofthe genus, and brought the history of its litera turedown
to 1887 in an article published in the Proceedings of theU.
S. NationalMuseum
of that year.He
recognized nine species. Sincethen thefollowing hasappeared: In 1887Mr.
H. H. Lyman
published in theCanadian
Entomologist,making
eight species.His
conclusionswere much
thesame
as those of Prof. Smith,and
the differences of these authorswere
finally reconciled, theresult beingshown
in Smith'sListof theLepidop- teraofBorealAmerica,
1891,withnine species clymene,colona, lactata,lecontei, contigua,suffusa,confusa,fulvicosta and ves- talis. In1893Neumoegen
andDyar
publishedintheJournalof theNew York
Entomological Society,recognizing butsevenspecies, lactata beingattached toclymcne and
fulvicosta to lecontei as varieties.Two
older names, suppressedby Smith and Lyman, were
revived,and
anew name
proposed for one of theimmacu
lateforms. Vestalis
was
not identified. In 1896 Ipublished in EntomologicalNews
a short article intended toshow what was known
of the larvae of these forms; littleenough
it is. I recog nized six species, following the revision published withMr.
Neumoegen,
but correcting the confusionthatwe
hadfallen into in regard tothe white forms. I recognized vestalisas the whiteform
of lecontei, and fulvicosta as that of reversa (suffusa],which Neumoegen
andDyar had
unnecessarily renamed. In 1897 I published inCanadian
Entomologist on agood
series of the formfulvicostQ) describing the larvaand showing
that thegenitaliccharacters used
by
Prof.Smith were
too variable to be reliable. In 1899Prof.Smith
publishedin EntomologicalNews
a description of
Haploa
triangularis, and in 1901Mr. H. D.
Merrick
named
anew
variety ofH.
leconteiin thesame
journal.OF WASHINGTON.
7In 1887the National
Museum
already possessed agood
collection ofHaploa, and since that time
much
additional material has been received, so that all theknown
formsare represented,many
of
them
in longseries. Itappears from thesethat there are butfive species, as I tentativelyconcluded in 1897.
The Haploas
presentsome
interesting features.One
speciesispractically withoutvariation.
Though
its patternofmarkings
is a slight modification of the one
which
in another species ishighly variable, yet here it is fixed. This is
clymene Brown.
Another
species, also very constant, neverthelessshows some
tendency tothe breakingdown
of the dark markings, so usual in the genus. This iscontiguaWalker. Confusa
ismore
variable and leconteistillmore
so.This latterruns
from
a fully-marked form to a whiteimmacu
late one, with, occasionally,
some
production of the buff color.Colona isthe
most
variable species,changing
not only from fullymarked
to immaculateby
gradual obsolescence of the markings, butalso from whiteto buff in thecolor of the hind wings, withall combinationsof these characters.
The
matter ismade more
obscureby
the tendency of theHaploas
tooccur inmore
or lessisolatedcolonies,which
usually breed true to a certain type, often considerablymore
restricted in its variation thanthe species at large. This gives the falseim
pression of a largernumber
of species than really exists,and makes
the correlation ofsome
of the forms difficult.The
patternof
markings
isessentiallysimilarinall thespecies,andneither themale
genitalic characters nor the larvaeseem
toshow any
strong differential points at times
where
suchwould
be useful in the separation of the species.The
peculiar extensile, inflatedand
annulate anal tubes of the male moth, bearing a terminal tuft of yellow hair, describedby
Siewersand
quotedby
Smith, are wellshown
in aspecimen
orclymene
beforeme, and
partiallyin amale
of colona.1.
H. clymene Brown.
interruptomarginata
deBauv.
comma Walk.
This form has the markingsof
H.
lecontei, var. harrisiinov.(describedbelow), a little thickened
and rounded and
with buff hindwings
; but it is perfectly constantand
unmistakable, needing no discussion.2.
H. colona Hubn.
Carolina Harr.
a. reversa Stretch, suffusa Smith.
b. consita Walk, lactata Smith.
c. fulvicosta Clem,
duplicata
Neum.
and Dyar.d. triangularis
Smith.
8 ENTOMOLOGICAL SOCIETY
This
is themost
variable species. I have a fine series ofno
specimens from the
same
locality in HarrisCo., Texas, selectedfrom
a lotof 2,000by
Mr. Geo. Franck. Thisshows
all the formslisted above excepttriajigularis,with nearlyall conceiva ble intergrades. I am, therefore, compelled to unite colona and reversa, hitherto heldapart.The
fulvicosta race inMaryland,
to
which
IreferredinEntomologicalNews,
reallyvaries asmuch
asthe
Texan
form, but never intobright colors or distinctmark
ings. It is analbino race of the
same
species.Prof. Smith's triangularis seems to
me
but an undersized re- versa with the costal portion of the bands cutthrough. Ihave Texan
specimens closelyapproaching it,though
larger. It is .doubtless constant in itsown
locality, but I seeno
reason for regarding itasa distinct species, unless, indeed,
we
soregard every colony of Haploa.3.
H.
lecontei Boisd.leucomelas H.-S.
a. militaris
Harr.
b. confinis Walk.
c. harrisii n. ^'>ar.
d. dyari
Merrick.
e. vestalis Pack.
f. smithii n. var.
In thetypicallecontei there are besides the marginal stripes an oblique one from apex to inner
margin and
three transversestripes. In militaris the basal transverse stripe is obsolete, the
median
one broken. In confinis the three transversestripesare obsolete. In harrisiin. var., the oblique stripe is also broken, leaving only a toothon
theinternal margin. In vestalis all the darkmarks
areobsolete.The
varietydyari
has themarks
of militaris or harrisii, buttheground
colorofbothwings
is pale buff, not white. Thisispossibly theform
referredtoby
Strecker as a $ clymene,which was
said to havemated
with a cf mili taris, producing "hybrids."Var. smithiin. var. Size of lecontei
and
with themarkings
ofthat forrri, but theupperpart of the obliqueband and
thecostal edges of the transverse bands are broken through. Smith's figures 14, 15 and 16 (Proc. U. S. Nat.Mus.,X,
1887,PL XIV)
illustrate it. I
am
in doubtwhether
this is a form of lecontei or ofconfusa.Were
itnotforthe size,Ishouldunhesitatinglyreferit tothe latter species, as there is a persistent projecting patch
below
the end ofthe cellwhich
seems easily derivable from thenormal
markingsofconfusa, but with difficultyfrom
those of lecontei.4.
H. confusa Lyman.
a. lymani n. 7ar.
The
typical form isbeautifully figuredby Lyman
(Can. Ent.,XIX,
1887, plate, ff. 7, 8and
9.)OF WASHINGTON.
9 Var.lymani
n. var. In thisform
thebands onthe basal half of thewing
are obsolete, leavingaband from
apex, angledbelow
end ofcell to tornusand
joined to thecostal stripe bytwo
short bands,more
or less broken. It closely resembles the variety triangularisoflecontei,but the angle ismore
obtuse, practically a right angle. It has the size of triangularisand
confusa.Two
specimens from Pittsburgh and Pougkeepsie,N. Y.
5.
H. contigua Walk.
a. lumbonigera Fitch
MS
This rather constant species
may
possibly produce a white form indistinguishable fxQTbfulvicostaand
vestalis, but I have no directevidence ofit. Insome
specimens theband from
the apex to the transverseband
isbroken
through or obsolete,and
for thisthe manuscript
name lumbonigera,
proposedby
Dr.Asa
Fitch in his collection,
may
be kept. I have anotherspecimen
in
which
the transverseband
alsoisbroken through,thespecimen markedly
approaching the variety harrisii oflecontei.A
fullseriesofcontigua will prpbably produce
some
puzzling forms.The
NationalMuseum
has but 16 specimens.The
large series of specimens inthe NationalMuseum
collec tion,showing
these variationsand
the intergradesbetween
the formerly-considered species,was
exhibited. Dr.Dyar
said itwas
not improbable thatmore
extensive collectionsmight
rendera still further reduction of species necessary. In replyto a ques tion as to theirfood-plant, he saidthat larvae
seemed
hard toget;they are
somewhat
general feeders.They
hibernate as half-grown
larvaeand
are very local.Mr. Ash mead
hazarded the opinion thatsome
varietiesmight
be hybridsbetween
different species, but Dr.Dyar
thought it not likely.He
thought that therewere
at least fourgood and
distinct species. Isolated colo nies often keep tosome
peculiar type, though this isnot always the case.He
thought that therewas
a tendencytoward
the formation ofspecies.The
threedrawers-full exhibited were, he believed, asgood
aseriesofHaploa
aswas
everbroughttogether.The
hour foradjournment
not havingarrived, the remain ingtimewas
takenup
byshort notes.Mr.
Caudellstated that hehad
receivedspecimens ofMelanoplus yarrowii Thomas, from
Dr.R.
E.Kunze
inArizona
; onemale and two
femaleswere
in the lot.