Table Of ContentMemoirs ofthe Museum ofVictoria 53(1): 101-114(1992)
REVISION OF THE GENUS CHEILOXENA BALY
(COLEOPTERA: CHRYSOMELIDAE: EUMOLPINAE)
By C. A. M. Reid
Division ofBotany and Zoology, Australian National University, GPO Box 4, Canberra, ACT 2601,
Australia
Abstract
Reid, C.A.M., 1992. Revision ofthe genus Cheiloxena Baly (Coleoptera: Chrysomelidae:
Eumolpinae). Memoirsofthe Museum ofVictoria 53: 101-114.
The unusual eumolpinegenus Cheiloxena Baly is diagnosed, itsthree known speciesare
revised and two new species, C. blackburni and C. tuberosa, are described. Lectotypesare
designated for C. insignis Blackburn and C. weslwoocliiBaly. A phylogenyofthespeciesis
proposed. Cheiloxenaspeciesareconfined to uplandareasofmainland south-eastern Aus-
tralia.
Introduction (BMNH); Museum of Victoria, Melbourne
(NMV); South Australian Museum, Adelaide
Thegenus Cheiloxena Baly waserected foran
(SAM).
unusual species of chrysomelid beetle, doubt-
Two
fully placed in the Sagrinae (Baly, 1860).
further species were described by Blackburn Cheiloxena Baly
without comment on the position of the genus —
(Blackburn, 1893, 1896). The placement in —Cheiloxena Baly, I8—60: 255. Chapuis, 1874: 34.
Sagrinae was followed by various authors until specJieasc,obCyhei1l9o0x3e:na4.weslwooCcrloiwisBoanl,y, 11984660:,b7y6mo(nToytpe-
the sagrine genera were revised (Crowson, ypy and origin—al designation).
1946). Crowson placed Cheiloxena in the Chil—oxena. Gemminger a—nd von Harold, 187—4:
Eumolpinae, noting correspondence between 3233. Clavarcau, 1913: 5. Jolivet, 1950: I.
thewingvenationofCheiloxenaandtheAfrican Jolivet, 1957: 9—9 (misspelling).
genus Euryope Dalman. These ideas were Cheiloscena. Selman, 1963: 158 (misspelling).
adopted by Jolivet (1950) who also suggested a Chiloscena. —Selman, 1963: 159 (misspelling).
relationshipbetween Cheiloxenaandtheeumol- Diagnosis. Eumolpinaeoflargesize,withcoarse
pine genus Beehyneia Jolivet. Selman (1963) sculpture,andnarrowpronotum. Length 7-15.5
illustrated the venter ofthe prothorax of Chei- mm; entire body surface non-metallic, densely
loxena and showed that it is similar to the microsculptured and clothed with scale-like
eumolpinegenus Spilopvra Baly. The wing ven- setae; small eyes, interocular space at least 3
ation (Crowson, 1946; Jolivet, 1950) is of the times eye length; last 4 segments of antennae
complete, plesiomorphic chrysomelid type, shorterthansegment 7,cylindricalorovoidand
although a vague subcubital fleck is indicated. densely microsculpured and pubescent; elytra
Currently Cheiloxenaisfound in section Euryo- tuberculate; elytral punctures with pair of
pites of Colasposomini (Seeno and Wilcox, tubercles on internal margins; tibial spurs at
1982). There can be no doubt that Cheiloxena apex ofall tibiae; tarsal segments 1-3 dorsally
belongstothe Eumolpinae as farasthisgroup is hollowed and segment 3 weakly bilobed; claws
understood and my studies indicate that it is a bifid. Male with last segment ofmaxillary palp
member ofthe Spilopyrini. A discussion ofthe expanded at apex; Female ovipositor non-tele-
relationshipofCheiloxena toother Eumolpinae scopic, with well-defined dorsal and ventral
will be given elsewhere. sclerites and vaginal glands.
tainvHdeelrayerp,ahrtyehleaogngedenntuyhsepiarrnoldpiofiset-sehdsi.psetAcolrilieesssaparereceirecesodmeapsrlceertrieeblleayd- ADfiiunssettdrriabtluoitaitohfneroasmonudtBhrb-iiesoablsoatgnyee.r,nTQchuoeerensnepsrelcoaifensdmaatrioenlMcaeonlnd--
unknown.
Material is lodged at the following insti- bourne, Victoria on or east of the Dividing
t(turAtaNliIioaCnns):;ANuaNstatitrouanrlaialalnIMnHsuiessctetourmyCo,llMSeyucdstneieounym,,(ACMaL)no;bneAdruorsna- aRgaeSngpoeef.ciEmuecnaslyhptauvse,beAsetnroctorlilcehcet,edArfgryormodtheendfroloin-
101
102 C. A. M. REID
and Nothofagas but have only been recorded Remarks. Superficially, species of the genus
feedingonthefirst. Thespeciesappeartofavour strongly resemble lamiine Cerambycidae and
forested upland country. The immature stages specimens may be found under undetermined
are unknown. Cerambycidae in collections.
Key to species ofCheiloxena
1. Pronotum with lateral teeth, disc simple (Figs 24-27) 2
Pronotum without lateralteeth, discwith pairofstronglyraisedelongate
ridges (Figs 28-31) 4
2. Elytra with strongly raised tubercles, without erect setae; antennal seg-
ments elongate 3
Elytra depressed, without strongtubercles, with evenly distributed erect
setae; distal antennal segments moniliform (Fig. 7)
C. insignis Blackburn
3. Elytra with 4 massiveacutely raised tubercles, c. halfheight ofelytron at
humerus (Fig. 12); pronotum widest across mid and/or anterior lateral
tubercles (Fig. 29) C. tuberosa sp. nov.
Elytral tubercles small and not prominent, less than one-third height of
elytron at humerus (Figs 13, 14); pronotum widest across mid and/or
posterior lateral tubercles C. westwoodii Baly
4. Frons depressed between antennae; pronotal ridge evenly tapering pos-
teriorly (Figs 26, 27): apex ofaedeagal median lobe abruptly contracted
to mucronate tip (Fig. 33) C. frenchae Blackburn
Frons convex between antennae: pronotal ridge abruptly terminating
posteriorly (Figs 24, 25): aedeagal median lobe gradually contracted to
mucronate tip (Fig. 32) C. blackbumi sp. nov.
Cheiloxena blackbumi sp. nov. and pronotum to width ofelytra across humeri
<
Figures 2, 5, 9. 17, 24, 25. 32. 38 2.2:1; head vertically decmlimned, hooded by
pronotum: length 10.5-11.5 and 12.5-
Types. Holotype: $ I Blackheath 6.12.1946 C. Oke 15 mm (2). (<?)
c(wNoeN.lsMSlteV.wc)Wto:.ioo/dn1(i3N/3B,M9a9Vol.)ny./e/,BPwlaaiunrteadhtMoytapndseedsiN(wt9.ii)tSo:h.nWa/1al<C?l/heleBasiab/elllooFox./keW.nC.ahVF.eseCip..rlgoWOux.kseKeon./na sihnitHneeirnasgpd;acfe(rFsoingls.esssl2i)gt:hhtaslnyurctfohanicrvedexdpebunnesctetwlueyreenpaudnnitcaetmnuenrtaeeedr:,,
Hughesdet. /(ANIC); 19/ Blue Mts H.W. Cox /John anterior margin of frontoclypeus straight,
Captor/Cheiloxena'.'frenchi Blkb./(ANIC); 13/Blue without lateral teeth; antenna (Fig. 5) elongate,
Mts / (SAM); 19 / Blue Mts / Cheiloxena 18051 length ofsegment 8 approximately twice width,
N.S.Walcs/(SAM); I. sex unknown,/ Blue M'tains I- length of segment 7 approximately 2.5 times
04 / Cheiloxena westwoodi ? var. / (SAM). width; last segment of6 maxillary palp (Fig. 17)
Diagnosis. Apical antennal segments elongate slightly expanded at apex.
and parallel-sided, frons convex between bases Pronotum (Figs 24, 25): cordate, broadest at
ofantennae, pronotum without lateral tubercles middle, almost parallel in front, sides evenly
and with dorsal keels which abruptly terminate contracted or slightly sinuate behind; anterior
posteriorly, elytra with recumbent setae and angles produced but without lateral tubercles;
with small tubercles (less than quarter height of uppersurface uneven and with pairofsubparal-
elytron at humerus) near suture. lel keelson eithersideofdiscfrom anteriorbor-
derto midpoint, these ridgesabruptlyterminat-
Description. Entirely black with reddish-brown ing posteriorly; weakly microreticulate; punc-
palpi, and slightly reddish tarsi, apices oftibiae tureslargeandshallowwithinterspaceslessthan
and apical antennal segments; sparsely clothed halfdiameter.
withbroad, rounded recumbentyellowishscales Elytron (Fig. 9): slightly uneven, with scat-
which are clumped on elytra and make them tered small irregular tubercles in 4 rows from
faintly flecked; scutellum scaled; elytra without base to apex, larger tubercle in the basal halfof
erect setae; body elongate and cylindrical but sutural row, and 2 larger tubercles in middle of
broaderthan C. frenchae,ratiooflengthofelytra apical half, largest tubercles less than quarter
THE CHRYSOMELID BEETLE GENUS, CHEILOXENA 103
height of elytron at humerus; upper surface of setae; body elongate and cylindrical, narrower
elytra extremely dull and densely microreticu- than C. blackburni, ratio oflength ofelytra and
lateexceptforshiningapicesoftubercles;elytral pronotum to width of elytra across humeri >
punctureslarge,deep, interspacesequaltodiam- 2.2:1; head vertically declined, hooded by pron-
mm mm
eter. Scutellum shining. Metasternum densely otum; length 1 1 (3) to 15.5 (9).
and evenly punctured, interspaces less than Head: surface densely punctured, interspaces
third of puncture diameters. Legs: 3 tarsal seg- less than halfpuncture diameter, shining; frons
ments without expanded bases. slightly depressed between antennae; anterior
Male genitalia (Fig. 32): apex of aedeagal marginoffrontoclypeusstraight, withoutlateral
median lobe gradually contracted to blunt teeth; antenna (Fig. 6) elongate, length of seg-
mucronate tip; tegmen shallowly keeled. ment 8 approximately twice width, length of
Female genitalia: spermatheca (Fig. 38) with segment7approximately3timeswidth;lastseg-
uncoiled duct and basally swollen, apically ment of 3 maxillary palp (Fig. 18) slightly
pointed, receptaculum: median ventral sclerite expanded at apex.
moderately elongate. Pronotum (Figs 26, 27): cordate, broadest at
middle, almost parallel in front, sides slightly
Distribution and biology. The species is restric- contracted and sinuate behind; anterior angles
ted tothe Blue Mountains west ofSydney, New produced but without lateral tubercles; upper
South Wales, and Balook, Victoria. It has not surfaceunevenandwithpairofsubparallelkeels
been collected since 1946. on either side of disc from anterior border to
The food plant is unknown. Adults were col- midpoint, these ridges smoothly attenuating
lected in December and January. posteriorly; strongly microreticulate; punctures
Remarks. The species is similar to C. frenchae, largeand shallow with interspaces less than half
but with broader antennae (segment 7 c.2.5 diameter.
times longer than wide), convex frons between Elytron(Fig. 10): uneven,withscatteredsmall
antennal bases, divergent and abruptly termin- irregular tubercles plus 7 or 8 conical large
ated prothoracic keels, small elytral tubercles(3 tubercles in an irregularrow nearelytral suture;
close to suture larger), and median lobe ofaed- largest tubercles being a pair at apex ofelytral
eagus evenly contracted to mucronate apex. disc, closely spaced and densely scaled (), or
moredistantand lessclothed(3),thesetubercles
Cheiloxena frenchae Blackburn c.1/3 heightofelyton at humerus; uppersurface
ofelytra extremely dull and densely microreti-
Figures 6, 10, 18, 26, 27, 33, 39, 44 culateexceptforshiningapicesoftubercles;ely-
Cheiloxena frencha—e Blackburn, 1893: 138. tral punctures large, deep, interspaces equal to
Chiloxenafrenchi. Clavareau, 1913: 5 (misspell- diameter. Scutellum shining. Metasternum
ing). irregularly punctured with smooth microreticu-
VTiycpte../HToylpoet/yCpheei(lboyxmeonnaoftryepncyh)ae9:Bl/aLcaktb.roVbIeCRT.ODRiIstA. wlaittehsatrmiipxstubreetwoefelnarg(2e),anodrsdmeanlslepluyncptuunrcetsur(e3)d.
/MuNsat..ViMcutso.riVai/ctToyrpiea TC.-9F7r5e2ncChh'esilcoolxl.en5a.1f1r.e0n8ch/iN[asitc.] LegMsa:l3etagresnailtasleigame(nFtigs.wi3t3h):outapeexxpaonfdeadedbeaasgeas.l
Blkb. / (NMV) median lobe abruptly contracted to blunt
Other material. NSW: 13, 5k SW Monga, on Euc. muFcermoanlaetegetniipt;altieag:msepnersmhaatlhleowclaylkdeueclted(.Fig. 39)
rubida C. Reid (ANIC). simple, receptaculum pointed at apex; median
Diagnosis. Apical antennal segments elongate ventral sclerite (Fig. 44) very long and narrow.
oafndanptaernanlaleel,-spirdoedn,oftruomnswictohnocuatvelabteertawleteunbebracsleess Distribution and biology. The species is known
andwith dorsal keelswhich evenly taperposter- only from the Latrobe River district, Victoria,
itoormlye,deilyutmratwuibtehrcrleecsu(matbemnotstsetthaieradnhdeiwgihtthosfmeallyl- anTdhMeomnaglae,wNasewcolSloeuctthedWianlNeos.vemberonEuca-
tron at humerus) near suture. lyptus rubida.
Description. Entirely black with reddish-brown Remarks.ThisspeciesissimilartoC. blackburni
palpi, 5with reddish legs; densely(2)orsparsely but has narrowerantennae (segment 7 c.3 times
oe(l3f)yftwrhcail;toetshcsecudatleelwsliwutmhhicsbchraoglaeiddv,;e ferlloeycutkrneaddeawdpitprheoeaucrtaunmcebreeencttto bltoaenptgewerereedntpahrnaotntehnownriaadlcei)bc,askeesse,lliscg,hltomlsoyerredaenppdrroemmsosirenedenetvferenollnyys-
104 C. A. M. REID
tral tubercles (7-8 larger near suture) and shining; punctures large and shallow, inter-
abruptly attenuated acdeagal median lobe. spaces equal to half- total diameter.
The specific association ofthe male described Elytron(Fig. 1 1): unevenandcovered in small
here with the unique female of C. frenchae is irregular tubercles, largest tubercles less than
based on the similarities given above, although fifth height of elyton at humerus; very densely
the metasternal punctures and dorsal setal dis- microsculpturedanddullexcepttipsoftubercles
tributionsaredifferent. Until furthermaterial is shining; elytral punctures large, deep, scattered
available, the male from Monga is considered between tubercles. Scutellum shining. Metaster-
conspccific with C. frenchae. num closely but very shallowly punctured. Legs:
<5 with all tarsal segments (Fig. 16) expanded at
Cheiloxena insignis Blackburn base, 2 simple.
Male genitalia (Fig. 34): apex of aedeagal
Figures 7, 11, 15, 16, 19. 28. 34,—40 median lobe abruptly contracted to acute
C'heiloxenainsignisBlackburn, 1896:39. Jacoby, mucronate tip; tegmen shallowly keeled.
1903: 4, plate I Fig. 7.— Female genitalia: spermathecal duct (Fig. 40)
Chiloxena insignis. Clavareau, 1913: 6. simple, apex ofreccptaculum rounded; median
Types. Lectotype (this designation): <? carded and ventral scleritc very short, vaginal palp appar-
labelled/T.H. Vic/Type/Blackburn coll. 1910.236/ ently 3-segmented due to median constriction.
CBhleaPaicrlkaoblxueercnntao/tiJynapscciosgnbiy(s3,)c:oBlll9.ac/1k9bH0..9/-V2(i8Bc9tM/N/CHh)Aeu.istlroaxle.na/ iTnysipge- bDeistmroidbeurtaitoenlayncdobmiomloogny.aTnhdiswisdpeescpireesasdeoenmsthteo
nis Blackb. / (BMNH); 2SS (separate pins) / He.V. / coastal slopes ofthe Dividing Range in central
Cheiloxena insignis Blackb. Co-type/ (SAM). southern Victoria, and hasalsobeencollectedat
Othermaterial'(29): Vic.: Belgrave. Bullarto, Emerald, Mittagong in New South Wales.
FernTreeGully, Healcsville, Launching Place, Mace- This species has been recorded on eucalypts
don, Monbulk, Mount Macedon. (Blackburn. 1896).Adultshavebeencollected in
NSW: Mittagong. April, July, October and November.
Diagnosis, Apical antennal segments monili-
form, frons concave between antennal bases, Cheiloxena tuberosa sp. nov.
pronotum with lateral tubercles and without
Figures 1,12, 20, 29, 35, 41
dorsal keels, elytra with recumbent and erect
setae and with small tubercles (less than fifth Types. Holotypc(5/Lamington NPQIdNov. 1983 M.
height ofelytron at humerus) near suture. Lowman /no. 15 /Cheiloxenasp. det. T. Weir 1981 /
(ANIC).
Description. Entirely reddish-brown with black Paratopes (5): 13 I Dorrigo NSW W. Heron /
tubercles to entirely black with apex of elytra (ANIC);26/DorrigoN.S.WalesW. Heron/(SAM): 1<5
and palpi reddish-brown; generally sparsely / Mt. Glorious St. For. QLD Nov-Dec 1985 [sic] Y.
clothed with narrow, pointed, adpressed white Basset coll. ex. Argyrodendron actinopkyllum r/f /
scales, which form 2 conspicuous patches on ANICColeoptera voucherno. 87-0134/Co/ANT/10/
each elytron and smaller scattered pale flecks in Aforrgeysrto1d9e-n2d6r.oini.a19e8t7moMpthyGlllourmioEudsliSntatseubFtorroepsitcaQllrdaiYn.-
eflryetsrhaspweictihmesncsa;ttsecruetdelelreucmtwisetthaoeu,tawrhiistiengscfarleosm; GBa.ss&etT.92W/il(AlNiIamCs),;i1nsr/aMitn.foWraesrtni/n(gAMN)S.W 1 1.xii.1977
tubercles; body form relatively depressed, and
head relatively prognathous, not hooded by Diagnosis. Apical antennal segments elongate
pronotum; length 7-10 mm. and parallel-sided, frons concave between
Head: surface densely punctured, shining; antennal bases, pronotum with lateral tubercles
anterior margin of frontoclypeus triangularly and without dorsal keels, elytrawith recumbent
excavate in middle and laterally toothed setae and with large tubercles (c. half height of
between base of antenna and mandible; frons elytron at humerus) near suture.
concave between antennal bases; antenna (Fig. Description. (Fig. 1) Entirely matt black with
7) short, last 4 segments moniliform; last seg- labrum reddish-brown, or appendages slightly
ment of6 maxillary palp (Fig. 19) very broad. reddish; wholly clothed with slightly variegated
Pronotum (Fig. 28): strongly contracted to pattern of white and yellowish-brown broad,
base from middle, sides with 3 irregularteeth in pointed, adpressed scales; white scales wides-
anterior half; upper surface uneven but not pread but forming small spot on apex ofouter
tuberculate, reticulately microsculptured but elytral margin, yellowish scales tending to be
THE CHRYSOMELID BEETLE GENUS, CHE1LOXENA
105
restrictedto denseareasalonganteriorpronotal have been collected from November to Feb-
border,scutellum andelytraltubercles;pronotal ruary.
disc very sparsely scaled; elytral tubercle scales
twice length ofotherscales; elytra without erect Cheiioxena westwoodii Baly
setae; body form sub-cylindrical, and head
hypognathous, hooded by pronotum; length 9- Figures 3, 8, 13, 14, 21-23, 30, 31, 36, 37, 42,
mm. 43,45
1 1
Head: upper vertex densely punctured, less CheiioxenawestwoodiiBaly, 1860:255,plate 14figs
dense between eyes, dull; anterior margin of 1-2. —
frontoclypeus triangularly excavate in middle, Chiloxe—na westwoodi. Clavareau, 1913: 6 (mis-
not laterally toothed between base of antenna spelling). Jolivet, 1957: 99, fig. 13D.
and mandible; frons concave between antennal Types. Lectotype (this designation): 6 I Type/ Type /
bases; S antenna (Fig. 4) long, last 4 segments Cheiioxena westwoodi [sic] Baly / Australia /
veryelongate.9antenna(Fig. 1)shorterandwith (BMNH).
segments 1-7 much narrower; last segment of6 Paralectotype:9/Type/Cheiioxenawestwoodi[sic]
maxillary palp (Fig. 20) moderately expanded. Baly / Baly coll. 1879 / (BMNH).
Pronotum (Fig. 29):cordate, stronglycontrac- Other material. Southern form (28). Vic: Belgravc,
ted from penultimate marginal tubercle almost Healesville. Mount Saint Bernard, Ringwood, Seville,
to base, sides with 3 irregular teeth in anterior Warburton.
half, posterior tooth small, often smaller than ACT: Blundell Hill (Brindabella Range).
median; front margin strongly produced, NSW: Island Bend (Kosciusko NP), Musfield [?].
thickenedandshining;uppersurfaceunevenbut Northern form (49). NSW: Barrington Tops, Blue
not tuberculate. sides and base of disc slightly Mountains, nr Cutters Pass (Williams R.), 17 km N
Dorrigo. Dorrigo, Gibraltar Range National Park.
raised; denselyreticulately microsculptured and
Gosford.HastingsRiver,MiddleBrotherStateForest,
irregularly sparsely punctured with large and Mount Tomah, Mount Victoria, Ourimbah, Robert-
small punctures, interspaces half-4 timesdiam- son, Sydney, Ulong (nr Dorrigo).
eter. Qld: Stanthorpe.
Elytron (Figs 1. 12): uneven, with 4 massive, Diagnosis. Apical antennal segments elongate
acutely raised, and 2-4 smaller tubercles; 3 of
and parallel-sided, frons concave between
large tubercles in row near elytral suture,
antennal bases, pronotum with lateral tubercles
furthest with another large tubercle outside it; and without dorsal keels, elytrawith recumbent
largest tubercles c. half height of elytron at setaeand with small to medium tubercles (upto
humerus, the latter also strongly raised and lat- third height of elytron at humerus) near
erally produced, with row of small tubercles
suture.
alongitsapex; verydenselymicrosculpturedand
dull except tubercles and a few scattered spots Description. Entirely matt black with palpi and
shining;elytralpunctureslarge,deep,evenlydis- often lateral margins ofelytra, tarsi and apical
tributedapproximately diameterapart. Scutel- antennal segments, reddish-brown; wholly and
1
lum shining. Metasternum fairly densely but variablydenselyclothedwithslightly variegated
shallowly punctured. Legs: <5 with tarsal seg- pattern of dull yellowish or rarely silvery,
ments not expanded at base. pointed, adpressed scales; scales slightly
Male genitalia (Fig. 35): apex of aedeagal narrower on pronotum than elytra; scales form
median lobe abruptly contracted to pointed series ofsmall spots along outer elytral margin,
mucronate tip; tegmen deeply keeled. most apical of which largest and proximal to
Femalegenitalia spermathecal duct (Fig. 41) margin; scutellum densely scaled; pronotal disc
:
spirally coiled, apex receptaculum pointed; densely scaled; elytral tubercle scales slightly
median ventral sclerite short, similar to C. longer than other scales, and not more dense;
westwoodii. elytrawithouterectsetae; southernformusually
with very densely scaled mesepisternum and
Distributionandbiology. Cheiioxena tuberosais posterior lateral corner of metasternum; body
a rare species ofsubtropical rainforests, distrib- form subcylindrical, and head hypognathous,
uted from Dorrigo, New South Wales to Mount hooded by pronotum; length 8-12 mm.
Glorious, south Queensland. Head (Fig. 3): whole of vertex densely with
A single specimen has been taken in a flight large punctures, interspaces reduced to ridges,
trap on Argyrodendron aclinophyllum. Adults dull; anterior margin of frontoclypeus triangu-
106 C. A. M. REID
lady excavate in middle, sometimes less deeply spacesthird-halfdiameterofpunctures. Legs: <?
concave, not laterally toothed between base of with basitarsal segments assymetrically
antenna and mandible; frons concave between expanded at base.
antennal bases; antenna (Fig. 8) long, last 4 seg- Malegenitalia: aedeagusofnorthern (Fig. 37)
ments very elongate; S last segment ofmaxillary and southern (Fig. 36) forms almost identical,
palp(Figs 21-23)moderatelyexpanded, slightly withapexofmedian lobeabruptly contractedto
narrower in northern form but intermediates pointed mucronate tip and tegmen deeply
present (Fig. 22). keeled;northern formwith slightlybroaderapex
Pronotum (Figs 30, 31): cordate, weakly to to median lobe and slightly more deeply keeled
strongly contracted from posterior marginal tegmen.
tubercle almost to base; sides with 3 irregular Female genitalia: spermatheca of northern
teeth inanteriorhalf, rarely middletooth absent (Fig.43)andsouthern(Fig. 42)formsapparently
and posterior tooth reduced; front margin identical, with spiral ductand blunt tip. Median
strongly produced, thickened, and shining; ventral lobe short (Fig. 45).
upper surface uneven but not tuberculate, sides
and baseofdiscslightly raised; densely reticula- gDiasptroifbaubtioount a2n0d0 kbimoliongyt.heAtdisptrreisbeunttiotnherreecoirsdsa
tely microsculptured and densely punctured
of the two geographic forms, but since the
with large shallow punctures, interspaces
reduced to ridges. species is rare this gap may not be significant.
Elytron (Figs 13, 14): slightly uneven, with 4- Northern form: widespread on the Dividing
Range and outlying highlands between Robert-
9 variably raised tubercles, and up to 12 son, south of Sydney, New South Wales, and
additional small tubercles; northernform with 5
Stanthorpc, south Queensland.
largetubercles in row nearclytral suture, rowof
Southern form: widespread on high ground
f3oulratrhgeotfubtehrecleisnnoeurtsriodwe,tahendfirastn,otthheirrdlaarngde from the central Victorian coastal hills to Brin-
dabella Range, ACT.
tubercle outside the third tubercle ofthe outer
row, largest tubercles about third height ofely- The species has been beaten offthe unrelated
tronat humerus;specimensfrom Robertsonand genera Euealyptus (Myrtaceae) and Astrotriehe
rDaoirsreidgotu(bAerNcIlCe)s wbietthweaebnoutin1n2ersmcallytlrablutrsohwarapnldy (fArroamliOaccetaoeb)e.rMtoosJtanusapreyc.imens were collected
outermargin;southernformwithsmalltubercles Remarks. The original description of this
in positions of 2 main rows of northern form, speciesby Baly includesan excellent illustration
othertubercles minute orabsent (in a specimen ofthe habitus. Cheiloxena westwoodii is similar
from Island Bend (ANIC) basal tubercles are to C. tuberosa from which it differs in having
elongate ridges reaching elytral base), largest smaller elytral tubercles and the pronotum less
tubercles less than quarter height of elytron at constricted basally from the posterior lateral
humerus; humerus also strongly raised and lat- tooth.
erally produced, with slight tuberculation along Two geographic forms can be distinguished,
its apex; very densely microsculptured and dull but are not separately named because not
exceptshiningapicesoftuberclesandafewscat- enough material is available from the potential
tered spots; elytral punctures large, deep, evenly area ofoverlap. The type material and descrip-
distributed approximately 1 diameter apart. tion (Baly, 1860) are clearly of the northern
Scutellum dull, densely punctate. Metasternum form. The description above is of both forms
fairly densely but shallowly punctured, inter- unless otherwise noted.
THE CHRYSOMELID BEETLE GENUS, CHEILOXENA
107
Figure 1. Habitus of9 Cheiloxena tuberosa, with detail ofdorsal punctures.
Figures 2, 3. Anterior view offace ofC. blackburni (2), and C. westwoodii (3).
Figures4-8.SantennaeofC. tuberosa(A), C. blackburni(5),C.frenchae(6),C. insignis(7)andC. westwoodii(8).
Scale bar= 5 mm.
108 C. A. M. REID
Figures9-14. Lateral viewofelytraofCheiloxenablackburni(9). C.frenchae(10), C. insignis(11), C. tuberosa
(12) and C. westwoodii, southern form (13) and northern form (14).
Figure 15. Tibial spurs at apex ofmetatibia ofC. insignis.
Figure 16. Dorsal and lateral view ofprotarsus ofC. insignis.
Scale bars = 3 mm (9-14) and 1 mm (15-16).
Figures 17-23. <5 (left) and 5 (right) apical maxillary palp segmentsofCheiloxena blackburni(17), C.frenchae
(18), C. insignis(19), C. tuberosa (20) and C. westwoodii, southern form (21) and northern form (22; Middle
Brother State Forest, 6 only) and (23; Dorrigo). Figures 24-31. Dorsal and lateral views ofpronotum of C.
bfloarcmkb(u3r0n)ia(n<5d, 2n4o.r2t,h2e5r)n,fC.orfmre(n3c1h)a.eS(c<?a,l2e6.ba2r,s27=),1Cm.mins(i1g7ni-s23()28)a,ndC.3tumbemro(s2a4(-2391)).and C. westwoodii, southern
THE CHRYSOMELID BEETLE GENUS, CHEILOXENA 109
19
17 18
22 23
20 21
26
24
27
25
^
31
29
28
110 C. A. M. REID
Figures32-37. LateralandapicoventralviewsofaedeagusofCheiloxenablackbumi(32;includingventralview
oftegmen),C.frenchae(33),C. insignis(34),C. tuberosa(35)andC. westwoodii,southernform(36)andnorthern
form (37). Scale bar « 1 mm.
