Dxtracto de Ia <Reaisttr,Chilenu de llistr.,ria Nutural>
Aflo XXXIY(ry!9lep-ll94q-TANYDERUS P,ICTUS PHILIPPI(Fam. Tanyderidae,0rd. IliPtera)
By
Cha r lesP.

ALEXANDER

Am her s t , M as s ac hus et t s( U. S' A . )l:by Philippi (18651 as
The superb fly clescribed'lan^,,tclenrs
one of the rarest
ren'rained
longhas
iictt tPhilippi'sfanrily.
intheand nrost ciesirablespeciis
and itinexisteuce
longer.ulit1r. type is apparentlyno
therecordtotherefore^ofmoie than ordinary interest
occurrenceof a secondsPecimen'
I am very greatly indebtedto Doctor Edwyn P'I{.eerlfor the giff of this beautiful fly. 1'he speciuten,Chiie, prestllna-a female, vrastaketrnear Cloncepci6n,
C' Reed,IidwynNllr.
bly betrveen1892 and 1894 bypiogreatr,r,ho,n'ith Philippi, llust alr'vaysranli as thetypeneer in the stucl,vof Chilean Diptera. Philippi'sof pictus u,as taten at I-os Ulmos, \taldivia' altiturleab,rlt 800 to 1000 feet, X{arch i865' by Philippi, arrcl
rvas believeclby him to be a male ('i8(r.5: 7801. Osterr
the possibilitythat theSacken(1869:318) consiclerecl
than :r tlale, a conratherfemale
wasatype specimen
lly the insufficient
somern'hat
issttpported
tention thatgiveu by Philippi'
asbody.
ofthefig;rrreof this region'If,e specirnenon hand is ttr-rdottllteclly
a female andthat thebelieveI
rvotild
from its mttch greater size,by theasstateclholotype of pictrtsivas really a nlale,clescriber.I am therefore clefir-ringthe present especimcrl as allot;"Pe.
of the presentmaterial clemonstrates
The accessionthat there is an error in Philippi's clescriptionanclfigttre of the wing in the omission of zr stlperntlmerarv
crossl,einin cell [(5, a fact that has harl its infttenceou
all succceclingkeys to tht: farlily (Alexancler. 1913,

ulplcrus pH.
Alexander.--TANyD.oRUS
REVTSTA()ITTLENAOe

7927; 1928, 1929). In all cases,the keys shoulcllrt,
worded to inclicatethat there,,rp,..rlumerarycross"." tria' in celdR4veirrs in cells R4 and R5, ratheralori.j.
This combinationcrossveins separatesthe gerrls.ofTanyderus frorn all other menrbersut tt iu*lf1i" Handrirscrr. ,Tanyderus is closetsto Radinotrcrtts
in the short ftision of veins R2-14-l-4,diff.rid ;;;;_
cuously from this g.rgyp in the srlpernrlmerarycrossveins of the radial field.
The allotypefemalehere describeclis in somewhat
poor condition, the antennaebeing broken beyondth,.,second.flagellar segment;only a part of u si"ete-i.,rpersisting;and the apicesof tire cerci of th; ;;6;;i;?
being broken.
. Z]lot1fe.-Female. I-ength about 35 nrillimeters;
rving 31.5 millimeters.
Mouthparts rela-tivelyshort, only a little longer.
.
Antennai scapebi"?L,ll]un"jh.,frontal.prolongition.
the tlagellum yellou., hroken bcyond the secbnd
ses_ment. Head and cervical region darkcolorecl. - --o,
Pronotum orange, with i pentagonaldark brown
ce_ntralarea, the lateral mar.qinsrrarrilvly da.k b.o*n.Mesono-talpraescntnm witli' the g.ouni-coroi y.ito*,
the slrface largcly covereclby foui grayish t-,tacL
stri_pes that ar-enarro\\-11,bor<leredI,y blackirrsh,rhe stri_pes nearly. confuent, the internrecliate
ltair narrowly
separatedir.rfront. Hnmerar regio' wiih a r.*ror#.
conspicous,erect setae; s.utum-with th. ;.di;"';rf;
posterior areas yellou', the remainder or.n"r, rol.
.,n1.:ly covered by a large darkened area;
scutellum
cnlely dark brorn,n;postnotalmediotergiteyellow,
withgeminatedarkenedareas on the posterforf-,uff.pf.u.u
chiefly dark brown, variegatedwith paler, theclorsll
two-thirds of the sternopliurite conspicoui.tl
yeJl-ow,Halteres yellow, the knobs darkbrow".";*;_i"';with the coxae dark plumbeous-"lro*n; trochanterslegs broken,.except
for a part'of th. p";;_9,*
P:*n;temora
rror leg;brownish yellow, tlie tips nariowlyvaguely palr,)r;tibiae yellow, broken at near
one_thirdnrsrontlf

NATURALn2;1i,H'i;l'11,J_*:i;_qi{iii:r?Ti:["r,,uu.il'l:br'itpp"inarrowry,.]lJ['
il.tfrHT.l";1t"w,j'.1::li:?l,':Tf:lt$F.a"'"rlffi
T.r,?:fJ|dl;o;,*':.il..,j1,":;ff,il;:i::"Jlitff
ffj"1;,;*,"'f*,Fig.24._?anyderus pictr.tspltitippi;

Ving of allotype.

lrt;,,T#li,].;i::[:tTtrji,?ffil"?f,f
fl-itr;i:"fji..*
Yii:'";i';*U,ru;t',*ff
If
ff
Abdominal t;1s.1t9,o.ung".;"a conditiotr u".ytonr.
black spots

lr""r"f segmentwith

ceeding tergites*F-,'frf,i J:i"ii,Jt
ffii T ;,*lt
somewhatbrownish
9.+;]ltJ.o, por,ion intenscblack with :r corlsl _g-.oy,teswirh,h.
b;i1:"lli:;fJl$:^;; JJl,ffi,Ji*;,;*l:conspicuous
blacke'ed;;,segmentb'is-hi;;;;s"r;.r, tr,.
toorans",i.iir#ilfrlffL:i:brownish gray.
REFERENCES.
Alcrander, C. p.
1913 .{ revisionof theft::

South _Dipte"
uniteclStates
rv"l1rlri,"rr"nf,nT..rlican

rousinsect,oi. tt

fa'riry.,''44,331_335,
3

1927Diptera. Family Tanyderidae.

GeneraInsectorum,-Fasc.,
i.soi1"-rs,pr.

113

Prcrus pH'
Alexander.- TaNYDERIIS'TheTanydericlaeof Australia (Diptera).
1928
Porc. I-inn. Soc. Nerv South M/ales, 53: 367'
374, 4 figs.
1929 Diptera of Patagonia ar-rd South Chile.
Pa rt l. Crane-flies.
llritsh Musertm (Natrrral Historv), pp. l-24O.
12 pls.
Ostcn Saclecn,R.
1869 X{onographs of the Diptera of NorthAmerica,4.
SmithsonianN'Iiscell.Co-ll.219: 318-319.
Philippi, R. A.
1865 Arrfzahlung der ChilenischenDrpteren.
\/erh. zool.-bot. Ges. Wien, 15: 780-782, pl. 29,f.ig. 57.
Reed, Edwyn C.
1888 Catllogo de los InsectosDipteros de ChileAnalesde la Ilniversidadde Chile, 73: 4.

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