On the knowledge of the genus Chamanthedon Le Cerf, 1916 (Lepidoptera, Sesiidae, Osminiini) of Vietnam and adjacent countries

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TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
uetva T)ans. ilepiSdoc. JLipan51 (3):205-214. June2000

On the knowledge of the genus Chamanthedon Le Cerg 1916 (Lepidoptera,
Sesiida eO,sminiin io)f Vietnam and adjacent countries
Yutaka ARiTAi) and Oleg G. GoRBuNov2)
i) Zoologica lLaboratory ,Faculty ofAgriculture, Meije University,
Tempaku-ku, Nagoya, 468-8502 Japan; e-mail: [email protected]
2] lnstitut efor Preblems of Ecology & Evolution ,Russian Acaderny of Sciences,
Leninsky prospek t33, Moscow V-71, II7071 Russia; e-mail: [email protected]
Abstract Two species ofthe genus Chan2anthedon Le Cerg 1916, namely C: melanoptera Le
CerC 1927 and (: aurigera (Bry k1,947) are noted from Vietnam. The latte srpecies is recorded
from Vietnam and Thailand fbr the firs ttime. Descriptions and illustTation sof female
Chamanthedon, includin gthe genitalia ,are presented for the fir stLime. A new species, C:
bicinct sap. nov. i sdescribe dand figure dfrom Myanmar.
Key words Lepidoptera, Sesiidae ,Chamanthedon, new species, Orienta lregion, taxonemy.
This is a continuation of eur investigati oonfs Orienta lSesiida e.It deal swith the genus
C7zamathedonLe Cerf;1916 Yietnam Myanmar Thailand.
of and adjacent counnies, and
Recently ,we have publishe da redescription of this genus ,with a brje fdiscussio nof its
compositjon and distributi o(nArit &a Gorbunov, 1998). Since that time, some additional
material ofthe genus has been collected. Herein, we describe a new species, ( bicinct sap,
nov., frem Myanmar. Besides that, two species ofthe genus, namely C melanoptera Le Ceif;
1927 and (] :auzCgera (Bry k1,947) are noted from Vietnam, The latte rone is recorded from
Vietnam and Thailand fbr the fir sttime, We describ eand illustra tethe female sex of
enamanthedbn ,includi ntghe genitali af,b rthe firs ttime. As one can see from the pictures
below (Fig s7-9) ,the genitali oaf Cl aungera distinc tdliyif efrrom those oftwo other species,
noted herein .It is possible ,that C auEigera is a representative of another, yet undescribed
genus ofOsminiini. Unfortunatel yw,e cannot solve thi sproblem now because males ofthis
species remain unknown.
All specimens examined or cited herein are kept in the fbllowin gcollections abbreviated in
the text as fo11ows:
COGM-collection O.G,Gorbunov, Moscow, Russia.
of
MNHP-Museum national d'histoi rnaeturelle, Paris ,France.
NSMT-Department of Zoology, National Science Museum, Tokyo, Japan.
RMS-Naturhistoriska Riksmuseet,Stokholm,Sweden.

This study is supported in part by the Grants-in-a iNdos 09041167 and 0604111 6fbr Field
Research of Monbusho Internation aSlcientif iRcesearch Program, Japan, as well as by the
RussianAcademy SciencesB,iodiversitPyrogram No. 1,1.I1.
of
C;bamanthedon Le Cerf(Fig1s-4,7)
melanoptera
thamanthedo nmelanqptera Le CerC 1927 :149 . Type localit y"C:ho Ganh" [=N. Vietnam, Tonkln,
Cho Ganh ?]. Holotype c7i (MNHP); Gaede, 1933: 782; Heppner&DuckiN'orth, 1981: 41; Arita&
Gorbunov, 1998i 25, fig s7-8, 12.
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Figs1-6. Chamanthedon spp. 1-4. C me l an op t er a Le CerC 1 9 2 7 . L di i(NSMT) .Alar
expanse 18.Imm, 2. \ (NSMT). Alar expanse 19.5m m . 3. \ (NSMT) .Alar
expanse 18.6mm. 4. \ (NSMT). A l a r expanse 18.4m m . '5.aCun bgeircaine tspa. nov.,
holotype ? (COGM) . Alar expans e 18.8mm. 6. C (Bry k,1947), \
(NSMT). Alar expanse 24.0mm.
Description. Female (Fig.2 ),Alar expanse 19.5 mm; body length11,6 mm; forewing 9,O
rnm; antenna 5.3 mm,
Head: antenna dark brown to black with dark green-bluesheen; s ca p u s dark brown to
black ;frons dark brown with strong green - v i o l es hte e n; labi alpalpu sdark brown to black
with purple sheen; vertex black with green- vi o l e ts he e n; oocipital f in;gie dark brown to black.
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Thorax: dersall yentirely dark brown to black with green sheen, with a tuft of ochreous
hair-lik secales on metathorax lateral ltyh;orax lateral ldyark brown to black with green-blue
sheen; posterior lmyetepimeron and metameren dark brown with bronzed-purpl esheen.
Legs :nock plate dark brown te black with strong green-blu esheen, with a few ochreous
scales with purple-bronze dsheen; fore coxa ochreous to pale yetlow with bronzed sheen, with
dark brown margins with bronzed sheen; fbre femur externally daTk brown to black with
green-blu esheen, internal lbyrown with bronzed sheen; fore tibia dorsall ydark brown with
bronzed-purple few distally, bronzed
sheen, with a ochreous scales ventrally ochreous with
sheen; fore tarsus dorsall ydark brown with bronzed sheen, yentrally ochreous with bronzed
sheen; mid coxa dark brown to black with green-blue sheen; mid femur dark brown to black
with bronzed-gree nsheen; mid tjbia dark brown to black with bronzed-gree nsheen, with a
few ochreous scales exterior-distally; spurs brown with bronzed sheen, mixed with ochreous
scales with bronze dsheen; mid tarsus dorsall ybrown with bronzed sheen, ventrally ochreous
with bronzed sheen; hind coxa dark brown to black with violet-blue sheen, with a small
ochreous to pale yellow spot medially; hind femur externally ochreous to pale yellow with
bronzed sheen, with dark brown to blac kposterio mrargin with blue-viol eshteen, internally
dark brown with bronzed sheen; hind tibia dark brown to black with purple sheen, with
few brown
admjxture of a ochreous scales exterior-basally and exterior-distally; spurs with
bronzed sheen, mixed with ochreous scales with bronzed sheen; hind tarsus entirely brown
bronzed
with sheen.
Abdomen: dorsally dark brown to black with strong dark green-blu esheen; tergites 1 and 2
each dark yellow with bronzed-purpl esheen, with a narrow dark brown to black stripe with
violet sheen anteriorly; tergit e4 with a broad dark yellow stripe broadened lateral wliyth,
bronzed-purpl esheen distall yte;rgite 5 with a 1arg edark yellow spot with bronzed-purple
sheen laterall y;tergite 6 with a narrow dark yellow stripe broadened lateral lwyit,h bronzed-
purple sheen distal] yv;entrally sternite 1+2 dark yellow stripe with bronzed-purpl esheen,
with admjxture of dark brown scales with purple-viol eshteen basally ;remaining sternitos
mixed with dark brown and pale orange scales with bronzed-purpl esheen; anal tuft entirely
dark brown to black with greenish sheen.
Forewing: costal margin dark brown to black with strong green-blue sheen; CuA-stem, anal
margin, disca lspot, veins within external transparent area and apical area dark brown to
black with purple-viol estheen; disca lspot broad, broadened costally; transparent areas
rather poorly developed ;external transparent area relatively small, rounded, divided into four
ce]ls; leve lto vein M2 about as broad as disca lspot and about twiee as narrow as apical area;
posterio rtransparent area reaching proximal margin of disca lspot; cilia dark grey-brown
bronzed
with sheen.
Hindwing: transparent ;veins and disca lspot broadl ydark brown to blac kwith bronzed-
purple shoen; disca lspot reaching base of commofi stem M,-CuA,; outer margin dark
brown to black with bronzed-purpl eshoen, narrow, about twice as narrow as cilia; cilia dark
grey-brown with bronzed sheen, ochreous anally.
Female genitali a(geni tparelparation Nos GA-255 and 1798 YA) (Fi g7.) . Papilla analis
broad, almost unscler6tized, covered with short setae; 8th tergite narTow, poorly sclerotized,
without setae; lamel] apostvaginalis and antevaginalis undeveloped; posterior apophysis
rather long ,about ･as long as anterior apophysis; ostium bursae at middle of intersegrnental
between 7 8,
membrane segrnents and membranous; antrum short, slightly sclerotized
ductus long, formation
medially; seminalis narrow, with a well-selerotized shell-shaped
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distall yd;uctus bursae narrow, graduall ybroadened into corpus bursae ;corpus bursae
extremely small and narrow, without signurn,
Male. SeeArita& Gorbunov (1998).

Individua lvariability. Slightl yvarying in the number of yellow scales on the abdomen,
Beside sthat, transparent areas of the forewing and number of scales on the hindwing are
rather variable (Fig 1s-4). Individual size varies as fbllows :aiar expanse 15.0-19,5mm;
body lengt h8.5-l1. 6mm; fbrewing 6.3-9.0mm; antenna 4.5-5.3mm.
Diflerentiadliagnosis.SeeArita& Gorbunev (1998).

Bionomics . The host plant is unknown. Moths were collected in April-Jun eat about 900-
1,2oo m a.s,1,
Habitat, Borders broad-leafforests.
of eyergreen
Distribution . Knewn from N, Vietnam only.
Material examined. 1 (ii (Fi g1,) ,N. Vietnam, Vinh Phu Prov., Tam Dao, 930 m, 2, V. 1996,
T. Suzukileg .(NSMT) ;1 di, same locality ,1,230 m, 2, V. 1998, R. Matsumoto leg .(NSMT);
1 4, same locality ,1,230 m, 20, V, 1995, A. Saito leg .(NSMT); 1 ? (Fi g4.) ,same locality,
930 m, 4. V. 1996, B. Tanaka leg .(NSMT) ;1 4,sam elocalit y9,30 m, 5, V. 1996, B. Tanaka
]eg .(geni tparelparation Nos GA-255 and 1798 YA) (NSMT) ;1 4, same localit y1,,230 m,
1. Vl. 1997 ,R. Matsumoto leg .(genit parleparatio nNos GA-243 and 1789 YA) (NSMT) ;1
g (Fig3.), locality1,,230 2.VI.1997,R. Matsumoto ieg.(NSMT);1 4 (Fig2.),N.
same m,
Vietnam,Lao Cai Prov. Sa Pa,Ban Khoang 1,400m, 12-14,V. 1995,MOwada leg.

(NSMT).
( :thamanthedo nbicinc tsap. noy. (Fig 5s, 8)
Descriptio n.Female (holoty p(eF)ig. 5)A.lar expanse 18.8mm; body lengt h10,8mm;
forewin 8g.5 mm; antenna 5.0 mm.
Head: antenna dark brown to black with dark violet-green sheen; seapus dark brown te
black ;frons dark brown with purple-bronzed sheen; labia lpalpus dark brown to black with
green-purpl seheen; vertex black with strong green-blu esheen; occipital fring edark brown to
black,
Thorax: dersall yentirely dark brown to black with strong greenis hsheen, with a tuft of
ochreous hair-lik escales on metathorax laterall yth;orax lateral ldyark brown to black with
strong yiolet-blue sheen; posteriorl ymetepimeron and metameron dark brown with bronzed
shoen.Legs:
neck plate dark brown to blac kwith strong green-blue sheen; fore coxa ochreous with
bronzed sheen in interio hralf and dark brown to black with green-blu esheen in exterior halfi
fore femur dark brown to black with green-blue sheen, with a few ochreous scales internally;
fore tibia dark brown to black with green-bronze dsheen; fore tarsus dorsall ydark brown
with bronzed-pur pslheeen, ventrally brown with bronze dsheen; mid coxa･dark brown to
black with blue-yiol estheen; mid femur ochreous with bronzed sheen, with a narrow dark
brown to black a'nterior margin with btonzed sheen; mid tibia externally dark brown to
black with bronzed-grQe nsheen, with admixture of individual ochreous scales with bronzed
sheen exterior-distally, internal ldyark' brown with bronzed shoen; spurs ochreous with
bronze dsheen; mid tarsus dorsall ydark brown to black ,two basal tarsonieres with purple-
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GenusChamanthedon (Sesiidae) Voifetnam and Adjacent Countries 209
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Figs7-9. Female genital ioaf Oleamanthedon spp. 7. C melanoptera Le CerL 1927 (genital
preparation Nos GA-255 and 1798YA). 8, C bicinct asp. nov,, holotype (genital
preparatio nNo.GA-239). 9. C aungeva (Bry k1,947) (geni tparleparatio nNos GA-
244 and 1790 YA). Scale baTs :O.5mm.
blue sheen, and remaining ones with bronzed-pur pslheeen, ventrally ochreous with bronzed
hind darkbrown bronzed hind
sheen; coxa ochreous with admixture of scales with sheen;
femur ochreous with bronzed sheen, with a narrow dark brewn to black anterior margin with
bFonzed sheen; hind tibia externally dark brown to black with strong blue-gree nsheen,
internal ldyark brown to black with strong purpIe ;spurs ochreous with bronzed sheen; hind
tarsus dorsall ydark brown to black ,two basal tarsomeres with strong green-blue sheen, and
remaining ones with bronzed-purpl esheen, ventrally ochreous with bronzed sheen,
Abdomen: dorsall ydark brown to blac kwith strong blue-vio lseheten; tergite 4 with a
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narrow ochreous to pale yellow snipe distail yte;rgite 6 with admixture of ochreous to pale
yellow scales distall yve;ntrally sternite 1+2 with admixture ofochreous to pale yellow scales
lateral lrye;maining sternites entirely dark brown to black with green-blu esheen; anal tuft
entirely dark brown to black with blue-gree nsheen.
Forewing: costal margin dark brown to black with strong green-blu seheen; CuA-stem, anal
margin, disca lspot, veins within external transparent area dark brown to black with
purple-viol eshtoen; apical area dark brewn to black with bronzed-purpl seheen; disca lspet
broad, broadened costally; transparent areas rather well-developed, densel ycovered with
brownish semi-hyaline scales; externai transparent area relatively smal1, quadrangular,
divide dinto four cells ;leve lto vein M, about 1,5 times as narrow as disca lspot and about
thrice as narrow as apical area; posterio trransparent area reaching proximal margin ofdiscal
spot; cilia dark grey-brown with bronzed sheen.
Hindwing: transparent; veins and disca lspot narrQwly dark brown to black with bronzed
sheen; disca lspot narrow, cuneiform, reaching base of vein M2; outer margin dark brown to
black with bronzed-purpl esheen, narrow from base of wing to vein CuAi and extremely
broad from vein CuA, to costal margin; cilia dark grey-brown with bronzed sheen, ochreous
anally.
Female genitali a(geni tparelparation No. GA-239) (Fi g8), . Papilla analis broad ,almost
unsclerotized, covered with short setae; 8th tergit enarrow, poorly sclerotized, without setae;
lamell apostvaginal iansd antevaginalis undeveloped; posterio arpophysis rarher short, about
bursae intersegmental between
as short as anterior apophysis; ostium at middle of membrane
segments 7 and 8, membranous; antrum short, entirely rnembranous; ductus seminalis
narrow, short, with a well-sclerotized shell-shaped fbrmation distall yd;uctus bursae rather
broad, graduall ybroadened into corpus bursae ;corpus bursae without signum.
Male. Unknown.

Individua lvariability, Unknown.
Ditferentia ldiagnosi s.By the coloration of the abdomen, this new species seems to be closest
to C: aloicincta Hampson, 1919, but it can be easily separated by the coloration ofthe frons
(whit leateral liyn aloicincta), labia lpalpus (mi djoin wthite ventrally in the species compar-
ed), disca lspot and apical area of the fbrewing (disc sapelt with yellow-orang secales distatly;
apical area between veins R,-M, densel ymixed with yellow-orange soales in aloicincta).
Additionall y,they are clearly distinguishab lbey the shape of the outer margin of the
hindwing (extreme lnayrrow in athieincta). From C hypachroma Le Cerf ;1916 and C
quinquecinet (aHampso n1,893) ,this new species can be readily distinguish ebdy the colera-
tion of the abdomen (a tleas tbasal two tergite sof the abdomen each with a broad yellow-
orange stripe distal liyn these species compared), by the shape of the external transparent area
ofthe fbrewing (vers bursoader ,somewhat broader than disca lspot in these species compared)
and shape of the outer margin of the hindwing (extrem enalrryow in these species compared).
From C melanopteiu Le Cerf ;1927 ,C bicinc tspa. nov. clearly diffe rbsy the coloration of
various part softhe body, structure ofwings and the female genitali (aop F,ig. S with Figs 1-
4, Fig.8 with Fjg.7 and the descript ioofn the species compared above). From other
congeners, this new species is easily distinguishab blye the coloration ef the abdomen and
structure of the outer margin of the hindwing,
Bienomics, The host is The holotype in
plant unknown. was netted mid-May at about
1,2oo m a,s,1,
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Genus Chamanthedbn (Sesii doafe V)ietnam and Adjacent Countrie s 211
Habitat .The holotype was netted in a small glade insid ean evergreen broad-lea fforest,
Distributien , Known from the type localit oynly in NE. Myanmar,
Material Holotype \ (Fig5,),N.Myanmar, 65km NE, ZiVar Dam,
examined. ofPutao,
1250m, 18-21 .V. 1998 ,S.Murzin & V.Siniaev leg .(geni tparleparatio nNo.GA-239)
(COGM).
Etymology. The narne ofthis new species is taken from Latin "bis" for twice and C`einctus"
fbr a girdle or belt ,and referring te the coloration of the abdomen of the species.
C;hamantkedon (Bryk()Fig6s,9)
aurigera
COnopia aurigera Bryk, 1947 :108 ,pl. 1 ,fig .5. Type localit yt`:N,O, Birma, Karnbaiti "[=NE. Myanmar,
Kambaiti ,ca 25025'N ,98006'E] .Holotype 4 (no tc7 !) (RMS).
enamanthedon autigera: Arita & Gorbunov, 1998 :20.
Description. Female(Fig. 6) . Alar expanse 24.0mm; body length 14,8mm; fbrewing 11.1
7.2
mm; antenna mm.
Head: antenna dark brewn to black with dark green sheen, with a larg epale yellow spot with
ligh tgreenis hhue in apical quarter ;scapus dark grey-brown to black ;fron sdark grey-brown
with purple-bronzed sheen, narrowly white lateral ltyw;o basa ljoin tofs labia lpalpus pale
yellow with greenish hue ventrally and dark brown to black with green-purple sheen dersally,
apical joi nenttirely dark brown to black with green-purpl seheen; vertex black with strong
fringe
groen sheen; occipital pale yellow.
Therax: patagia dark brown to black with strong green-bronze dsheen, with admixture of
pale ye]low scales with ligh tgreenish hue anteriorly and lateral lyte;gula dark brown to black
with strong green-bronzed sheen, with pale yellow scales with greenish hue posteriorly;
mesothorax dark brown te black with strong green-bronzed sheen; metathorax dark brown
te black with strong green-bronze dsheen, densely mixed with pale yellow scales with greenish
hue medially and with a tuft of ochreous hair-li ksecales lateral ltyh;orax lateral ldyark
brown to black with strong blue-viol eshteen, with a larg epale yellow spot with greenish hue
medially; posterior lmyetepimeron and metameron dark brown with green sheen, with
admixture of pale yellow scales,
Legs: neck plate pale yellow with bronzed hue, with a few dark brewn scales with purple-
violet sheen medial]y; fore coxa entirely pale yellow with golden hue; fbre femur extemally
entirely dark brown to blac kwith purple-viol eshteen, interna lplalye yellow in exterior half
and dark brown in interio hralf ifore tibia dorsall ydark brown to black with blue-violet
sheen, with a few dark brown seales basall yand distall yve,ntrally dirt yyellow-orange; fore
tarsus dorsall ydark brown to black with purple-bronzed shoen, with a smal1 pale yellow spQt
on fbur basal tarsomeres distall yve,ntrally ochreous with bronzed sheen; mid coxa pale
yellow with gelden hue, with admixture of dark brown scates with purple sheen; mid femur
pale yellow with golden hue, broadly dark brown with purple-blu esheen anteriorly; mid
tibia dark br6wn to black with strong green-blue sheen, with admixture of individua lpale
yellow scales exterior-medially and distql !sypu;rs pale yelrow with golden hue; rnid tarsus
dorsall ydark brown to black with purple-bronze dsheen, with a small pale yellew spot on
each tarsemere distall yve,ntrally ochreous with bronzed sheen; hind coxa dark brown,to
bla6k with strdng green-blue sheen; hind femur externally dark brown to black with strong
green-blu esheen, internal lpyale yellow with golden hue; hind tibia externally dark brown
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to black with strong groen-viole tsheen, with a few pale yellow scales with golden hue distally,
intemall ypale yellow with golden hue, narrowly dark brown to black with bluaviole tsheen
distall ysp;urs pale yellow with golden sheen; hind two basal tarsemeres exterior-dorsally
dark brown to black with strong green-viol eshteen, with a small pale yellow to white spot
with golden hue distall rye,maining tarsomeres pale yellow to white with strong golden sheen,
interior-ventral lenytirely pale yellow to white with golden sheen.
Abdomen: dorsally dark brown to black with strong green-bronze dsheen; tergites 1 and 2
each with admixture ofindividual pale ye]low scales wjth golden hue distall yte;rgite4 with
a broad, pale lateral lbyrQadened yellow stripe distall yt;ergite s5 and 6 each with a narrow,
pale latera lblryoadened yellow stripe distall yve;ntrally sternite 1+2 pale yellow with dark
brown to black dista lmargin with green-blu esheen; sternite 3dark brown to black with
bronzed-green sheen, densely mixed with pale yellow scales anterior-laterally; remaining
sternites dark brown to black with green-blue sheen, with a broad pale yellow stripe distally;
anal tuft dark brown to black with green-blue sheen, mixed with pale yellow scales with
goldenhue dorsally.

Ferewing: basall yblack with green sheen; costal margin dark brown to black with strong
green-blue sheen, with admixture of individua lpale yellow scales between Sc and R-srem;
CuA-stem, anal margin and veins within external transparent area dark brown to black with
green-viol estheen; disca lspot rather narrow, sljghtly broadened costally, dark brown to
black with bronzed-purpl esheen, with a broad, elongated, yellow-orang espot in dista lpart;
apical area dark brown to black with purple sheen, densel ycovered with yellow-orang secales
between veins; transparent areas well-developed; external transparent area relatively small,
rounded distall dyi,vided into fiv ecells ;leve lto vein M, about 2.5time sas broad as discal
spot and about as broad as apical area; posterio rtransparent area slightly exceeding distal
margin of disca slpot; cilia dark grey-brewn with bronzed sheen,
Hindwing: transparent ;veins, disca lspot and outer margin dark brown to black with
bronzed-purple sheen; disca lspot very small, cuneiform, reaching base of vein M2; outer
margin narrow, about twice as narrow as cilia; cilia dark grey-brown with bronzed sheen,
pale yellow anally.
Female (genital Nos GA-244 1790YA) (Fig.9)P.apilla
genitali a preparation and analis
broad, s]ight]y sclerotized basally c,overed with short setae on membranous part ;8th tergite
narrow, poorly sclerotized, without setae; lamell apostvaginal iasnd antevaginalis undevel-
oped; posterio arpophysis slightly longer than anterior apophysis; ostium bursae somewhat
proximal to proxirna] margin of 8th sternite membrane; antrum shert, slightly and narrewly
sclerotized proximally; ductus seminalis narrow, shert, without any sclerotized formation;
ductus bursae narrow, long, graduall ybroadened into corpus bursae ;cerpus bursae without
slgnum.
Male. Unknown,

lndividual The is inindivid-
variability, coloration virtually constant, slightly variable only
ual size: alar expanse 21,O-24.0mm; body lengt hI2,O-14.8mm; fbrewing 9.5-Il.1mm;
antenna 6.5-7.2 mm.
Differenti dailagnos isT.his species seems to be closest to C athicincta Hampson, 1919 ,but
can be separated from it by the somewhat large rsize (al aerxpanse 16. 0mm in the holotype
of the species compared) and by the coloration ofthe abdomen dorsall y(terg i4t aends 6 each
with a narrow white stripe distal liyn athicincta). From C hmpochroma Le CerC 1916 ,C
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Genus Chamanthedon (Sesiid aoef) Vietnam and Adjacent Countries 213
'is
quinquecincta (Hampson ,1893) and C melanoptera Le Cerf ;1927 ,this species readily
distinguish ebdy the coloration of the antenna (entir dealryk brown to black in these species
compared), frons (witho wuhitte scales lateral liyn all these species compared), abdomen (with
distinct lbyroader stripes in these species compared) and disca lspot ofthe fbrewing (without
bright coloured scales in these species compared). Beside sthat ,from C melanopteva, jt
difler sby the structure of the male genital ia(op .Fig,9 with Fig.7). From C.flavipes
(Hampso n1,893) and C xanthopleura Le CerC 1916 ,C: auiigera is distinguish abbyl tehe
coloration ofthe antenna (entir dealryk brown to black in these spocies compared), abdomen
dorsall y(witho udtistin csttripes in these species compared), disca lspot of the forewing
(witho ubrtigh tcoloured scales in these species compared) and by the shape of the external
transparent area of the forewing (distin lcetsl sdyevelope din the species compared).
Bionomics. The host plant is unknown. Moths were collected in April and July . It is
possibl ethis species has two generation sper a year.
Habitat , Borders of tropical rain forests.
Distribution . This species has been known from the type localit yin Myanmar only. We
record it from Vietnam and Thailand for the fir sttime.
Material 1? (Fig.6),N,Vietnam,Ninh BinhProv.,Gia Vien,Cuc Phuong,370
examined.
m, 27, IV. 1998 ,T. Hirowatar ileg (,NSMT); 1 9, same localit y1,60 m, 27. IV, 1996 ,Y. Arita
leg .(geni ptraelparatio nNos GA-244 and 1790 YA) (NSMT) ;1 ?, same localit y3,70 m, 25.
IV. 1998,R. Matsumoto leg.(NSMT);1 9,Thailand, Chiang Mai, Doi Suthep,22. VII.

1981,H. Kureku, S,Moriuti,Y, Arita& Y, Yoshiyasu leg.(NSMT),

Acknowledgements
We express our cordial gratitud eto Profs Drs H. Q. Hung and T, D. Chien (Hano iAgricul-
turat UniversityH,anei, Vietnam),Mr D. V.Khuong (CucPhuong National Park,Vietnam),

Mr B.Tanaka (YahagiRiver InstituteT,oyota-shi,Japan),Mr R,Matsumoto (Osaka

Museum ofNatural History ,Osaka, Japan) ,Dr T. Hirowatar i (Osak Parefi:ctu Urneiyersity,
Japan),Dr M, Owada, (theNationalScience Museum, Tokyo), Mr T. Suzuki (Saitama,

Japan) and Dr A. Saito (Natur aHlistor yMuseum and Institu teC,hiba, Japan) for their
constant support during lepidopterologica lsurvey of the senior author in North Vietnam, and
Dr S. Murzin and Mr V. Siniae (vMoscow R,ussia) for donating available specimen, wbich
has proved to be the holotype of the new species describe dherein,
References
Arita ,Y. & O. G. Gorbunov, 1998. A Tevision of Ferdinand Le CerPs clearwing moth types (Lepidoptera,
Sesiidae )k,ept at the Paris Museum. III .The genus Chamanthedon Le CerL 1916 in the Oriental
region. T>-an si.mid S:bc. .Jbpan 49: 19-29.
Gaede,M., 1933, Familie: Aegeriidae.in SeitzA,. (Ed.)D,ie Gross-Schmetteriindgeerllrde10:77S-

802, pls94-95. A. Kernen, Stuttgart.
Heppner, J.B. & W.D. Duckworth, 1981 . Classificat ioofn the superfamily Sesioidea (Lepidoptera:
Ditrysia) . Smithso nC.bntZ ZooL 314: 1-144.
NII-Electronic Library Service
TThhee　 LLeepipdiopdteorpoltoegiroaollogical　 SSoooiceityety 　ooff　 JJaapapnan
214 Yutaka　ARITA　and 　Oleg　G 　GoRBuNov
摘 要
ベ トナム お よびそ の 近隣地域の Chamanthedon 属 （鱗翅 目，ス カ シ バ ガ 科）の 知見 （有 田
豊 ・Oleg　G ．　Gorbunov ）
ス カ シバ ガ科 Chamanthedo　nmaの C．〃melanoptera 　Le　Cerf，1927と C．α厩gθ毋 （Bryk，　1947）の 2種をベ
トナムか ら記録した．C．　aurigera はベ トナム とタイか ら最初の記録である．　 Chamanthedon　UZの雌は
今まで未知であっ た．C　bicinct　sap ．　nov ．を ミャ ンマ ーから記載 した．
−
Chamanthedon　melan 〔）ptera　Le　Cerf，1927（Figs　l 4，7）
北ペ トナム か らホ ロ タイプ の 1 ♂ の みが 知 られて い た．今回，北ベ トナム の タム ダオ （2 ♂ 6 ♀，
930− 1，230m ）とサバ （1 ♀，　L400　m ）の 2ヶ所か ら記録した．　 Figs　1−4 に見られるよ うに， 前後翅の
色彩や腹部の 黄色の 帯に は変異がある．
C乃amanthedon 　bicinet　sap ．　nov ．（Figs　5，8）
ミャ ンマ ーか ら新種 として記載 した本種 は，腹部 の色彩などが C　athicincta　Hampson ，1919に良く似
てい るが，頭部の色彩や前翅の横脈紋前縁部分の色彩が異なる．
Chamanthedon　aurigera （Bryk，1947）（Figs　6，9）
この 種は雌ゲニ タ リアが図示 （Fig．9）した よ うに他の 2種類と大変異な る．　 Osminiini 族の他の属で
あるの は確かで あるが，雄を調査するまで この 属に所属させてお く．
（A  epted 　February　25，2000）
Published　by　the　Lepidopterologic　aSlociet　yof　Japan，
5−20，Motoyokoyama 2，Hachioji Tokyo ，192−0063 Japan
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