Quoderno di Srudie Nolizie di StorioN olurole dello Romogno Quad.S tudNi at.R omagna1,7 s uppl.5: 5-61,g iugno2 003 lssN1 123-6787 RobertoF abbri& Hong-zhangZhou- THR.EE NEW SPECIES OF THE GENUS BYRRIIUS LINNAEUS,I767 SUBGENUS ROTUNDOBYRRIIUS FABBRI, 2OOO (InsectaC oleopterBay rrhidae) Abstract Three new specieso f pill beetlesf rom China are describedB: yrrhus (Rotundobyrrhus) artoprocerusF abbri & Zhou, sp. nov. from Hubei Province,B yrchus( Rotundobyruhus) críspisulcatusF abbri, sp. nov. from Shaanxi and Chongqing Provincesa nd Byrchus (Rotundobyrrhus)b reviuncinatusF abbri, sp. nov. from GansuP rovince.M ale and female genitaliao fthe new speciesa ref igureda ndt hep rincipald ifferencesfr om their closestr elatives are reported.A distributionm ap of the 6 known specieso f subg.R otundobywhusF abbri is shown. Key words: ColeopteraB yrrhidae,B yrrhus,R otundobythrls,n ew speciesC, hina. Riassunto lTre nuoves pecied el genereB ynhrts Linnaeus,1 767 sottogenereR otundobyrrhtsF abbri, 20001 Nel presentec ontributo sono descrittet re nuove speciec inesi di coleotterib irridt: Byrrhus (Rotundobyrrhusa)r toprocerusF abbri& Zhou, sp. nov. dellap rovinciad i Hubei,B yrchus (Rotundobyrrhusc) rispisulcansF abbri, sp. nov. delle province del Shaanxie Chongqinge Byrrhus( Rotundobyrrhusb) reviuncinatusFabbris, p.n ov. dellap rovinciad el Gansu.P ero gni species onor affiguratig li organig enitalie d è fornitau na comparazioneco n le speciea fhni. Al termine è presentatau na cartina di distribuzioned elle sei specieo ggi conosciuted el subg. Rotundob yrrhzs Fabbri. In the following pages three new species of Byrrhidae from China are described, belonging to the genus Byrrhus Linnaeus, 1767, subgenvsR otundobyrrhus Fab- bri,2000. Rotundobyrrhusis endemict o Chinaa ndc omprisesti ll now threes peciesB: yruhus (Rotundobyrrhusg) ansuensisF abbr| 2000 from Gansu,B . (R.) hubeiqnusF ab- bri, 2000 from Hubei andB . (R.) qinlingicrs Fabbri,2 001 from Shaanxi. * Hong-zhangZhou was supportedi n part by StateK ey Basic Researcha nd Development Plan (no. G2000046801)b, y NationalN atural ScienceF oundationo fChina (no. 39970090),a nd by CAS Innovatìon Program. 55 The discriminationo f the differents pecieso f subgenuRs o tundobyrrhusis possible mainlyb y usingm alea ndf emaleg enitaliac haracterss,o it's superfluousto present a dichotomick eyo f species. Authors' commentso n the studiedm ateriala ree nclosedin squareb rackets.S epa- ratel abelsa rei ndicatedb y slashes(/ ). The body lengthi s givena su suale xcluding head.T he acronymC RF means'theR . Fabbri collection. Byrrhus (Rotandobyrrhus) artoprocerus Fabbri &Zhou, sp. nov. Type tocality. China,H ubei, Shengnongiaj , Guanmengshan. "China, Type material. Holotypus ?, labelled Hubei, Shengnongjia, Guanmengshan1,4 00m , 3O.vII-11.VIII.1998l,e g. XiaodongY u fanotherla bel "Holotypus, on the samep in showst he equivalentd ata in Chinese]"/ Byrrhus (Rotundobyrrhusa)r toproceruss p.n ov.,d et.R . Fabbri& H.-z.zhou2002 [printed "China, redl abell" (coll. Instituteo f Zoology,C AS,B eijing).P aratypi:I t, Hubei, ShengnongjiaJi,u huping1, 870m , 24.VII-8.VIII.1998l,e g.X iaodongY u [another "Paratypus, label bearst he samed ata in Chinese]"/ Byrrhus (Rotundobyrrhus) artoprocerus.sp .n ov.,d et.R . Fabbri& H.-z.Zhou2002[ printedr edl abel]"( CRF). Etymology. Name composedb y the combinationo f two latin adjectives"artus", narrow, and"procerul.sl"o, ng, to emphasizeth e shapeo f femaleg onocoxites. \1.-". iVll . i[/ :'. i' i"\.)\Ì- ,,,111: Figg. I -3 - Left gonocoxite and stylus in dorsal view (scale 0.3 mm): |. Byrrhus (Rotundobynhus) artoprocerus piUtri a Zhou, sp. nov., holotype; 2. Byrrhus (Rotundobyrrhus) crispisulcans Fabbri, sp. nov., paratype; 3. Byrrhus (Rotundobyrrhus) breviuncinatus Fabbri, sp. nov., paratype. 56 Description. Size: holotype length 6.7 mm, maximum width at half-length of body 4.5 mm; paratype:l ength6 .6 mm andw idth 4.3 mm. Apterous.B ody hemisphericw ith maximum height at the middle; integuments black, legs and antennaed ark-brown. Pronotum 1.97 times as broad as long. Punctureso f pronotumv ery small, spaceda bout 5 times their diametera nd moderatelyu mbilicate;m icrosculptures trong.E lytra coaptatew, ith striaed eeply engraved,e marginate,s inuatea nd broadly interrupted;s trial e,lytrali ntervals flatteneda nd finely punctate,w ith puncturess paceda bout 4 times their width; other coarsep uncturesb igger and umbilicate;e lytral transversem icrosculpture very strong.U pper part of the body clothed with dense,s hort, decumbenta nd brown pubescenceo, n pronotum and odd elytral strial intervalsw ith bands of longerp rominentp ubescencel,i ght-brown,c hestnuta nd black; at the middle of elytraa largea nde videntW -shapedp atternf ormedb y goldenh airs.S hort,s trong, slightly clavatea nd erectb ristles,b rown andhazel, scatteredo n pronotum and elytra,m ored enseo n lateralm arginsP. rostemumw ith broadp uncturesl,e sss paced than their diameter.P rosternaDl rocessa bout as wide as lons and flattened. Figg. 4-5 Aedeagusi n frontal view (scale1.0 mm): 4. Byrrhus (Rotundobyrrhus) crispisulcansFabbri, sp. nov., holotype; 5. Byrrhus (Rotundobyrrhus)breviuncinatusF abbri,s p. nov., holotype. 57 Epipleuraea s broad as metaepisternitesM. etasternumf lat, emarginatein front, with a transversed epressiona t one third of its length, and strongly punctate. Abdominal sternitesw ith weakly granulatedp uncturesa nd very strong transverse microsculpturem, oderatelys hining,w ith coarse,s hort,f latteneda ndb roads etae; in the last abdominals ternitet he setaea rem uch longer andl essf lattened,b ecoming almostf iliform towardst he posteriorm argin.G onocoxitesa nds tyli in dorsalv iew asi n fig. l. Gonocoxitesv ery slight,w ithout laterali ndentationa t the innerm argin and providedw ith long hairs before the middle. styli big, 2.3 times as long as broad,f usiform, with long hairs. Discussion.B . (R.) artoprocerusn . sp. is the smallests pecieso f the subgenusI.t differs from ,8. (R.) hubeianus,t he geographicallyn earests pecies( Fig' 6), for smaller size, upper part of the body more adorned,l onger and more coloured pubescencen,a rrowera nd hairedg onocoxitesa nd bigger styli. Byrrhus (Rotundobyrrhus) crispisulcans Fabbri, sp. nov. Type locality. China,C hongqingS hi, 30 km NE of Chengkou. "China, Type material. Holotypus é, labelled Chongqing Shi, 30 km NE of "Holotypus, Chengkou[ 3 l'58'00N 10 8'47'60E7, 2150 m, YI.2002" / Byrrhus (Rotundobyrrhusc) rispisulcanss p.n ov.,d et. R. Fabbri 2002 [printedr ed label]" "China, '60N (CRF).P aratypusQ , labelled Shaanxmi er.,B a Xian [: Baxian,3 2"1 "Paratypus, 109'10'0E], 2150 m, YI.2002" I Byruhus( Rotundobyrrhus) crispisulcanss p. nov.,d et. R. Fabbri 2002lprinted red labell" (CRF)' "crispisulcans Etymology. Name derived from the latin adjective (-antis)", winding, with referencet o the sinuateo utline of parameres. Description. Size:h olotypel ength7 . 6 mm,maximumw idth 5.1m m at the middle of the body; paratypel ength7 .4 mm, width 5.1 mm. Apterous.B ody hemispheric;i ntegumentsb lack; legs and antennaeb rown' Pronotum1 .98t imes as broad as long. Punctureso f pronotumm oderatelyl arge, spaceda bout4 timest heir diametera ndu mbilicate;m icrosculptures trong.E lytral striae deeply engraveda nd emarginate,s traight or little sinuate and slightly intemrpted;s trial intervalsf latteneda ndm oderatelyf ìnely punctate,w ith punctures spaceda bout3 timest heir width; others catteredp uncturesb iggera ndu mbilicate; elytral transversem icrosculptures trong.U pperp art of body coveredw ith dense, short, decumbenta nd brown pubescenceo, n pronotum and odd elytial strial intervalsw ith bandso f longer slantingp ubescencel,ig ht-brown and chestnut,a t the middle of elytra with a largea nd evidentt ransverseW -shapedp attern,m ade by goldenh airs.S hort,t hick, weakly clavate,l ight-brown,u pright setaes cattered on pronotuma nd elytra,d ensera t sides. Prosternumw ith broada nd deepp unctures,t heir distancel ower thant heir diameter. 58 Prosternalp rocessa bout as wide as long and flattened.M etasternumf lat, emarginatei n front and provided with very large punctures.A bdominal sternites with roughg ranulatedp unctures,s trongt ransversem icrosculpturea nd short,f lat andb roads etae. Aedeagus( Fig. a) with asymmetricabl asalp iece; median lobe with broad, flat andr oundeda pex;p arameresla rgew ith outerm argins inuatea ndh ook-shapeda t apex. Gonocoxitesin frontal view (Fig. 2) moderatelys lenderw, ith a small depression on inner margin,w ell sclerifiedo nly for 213o f their width, beginningf rom the inner margin,p rovidedw ith long hairsf rom half their lengtho n. Styli large,2.l3 times as long as broad,f usiform, with long hairs. Discussion.B . (R ) crispisulcansis similar to B. (R.) gansuensisf,r om which it differs in having slenderp arameresa nd different rotation of the asymmetrical basalp ieceo f aedeagusT. he geographicallyn earests peciesis B. (R.) hubeianus, CHIHA Xiningr QINGHAT - Xi'Én I t SHAAhJXI f*ú8, Changeha I HUNAN GUIZHOU I GUANGXI Irlanning I Fig. 6 Distribution map of the species of B.yrrÀasL innaeus, 1767 subg. Rotundobyrrhus Fabbri, 2000: a. Byrrhus (R.) artoprocerus Fabbri & Zhou, sp. nov.;b. Byrrhus (R.) breviuncinatas Fabbri, sp. nov.; c. Byrrhus (R.) crispisulcanrF abbri,s p. nov.; g. Byruhus( R.) gansuensisF abbri,2 000; h. Byrrhus (R.) hubeianusF abbri, 2000; q. Byrrhus (R.) qinlingicusF abbri,2 001. 59 from which it canb e distinguishedb y broaderp arameresa, picallys lenderm edian lobe ofthe aedeagusa, nd narrowera nd lesss clerifiedg onocoxites. Byrrhas (Rotundobywhus) breviuncinstus Fabbri, sp. nov. Typel ocality.C hina,S Gansu,S SWM inxian,W Qilian Shan,9k m W of Kunda. "China, Type materiat.H olotypusé ,labelled S Gansu,S SWM inxian,W Qilian Shan,9 km W of Kunda, 34'09'N 103o46'E,3 300-3900m , 8.YII.2002"I "Holotypus, Byrrhus (Rotundobyrrhus)b reviuncinatuss p. nov., det. R. Fabbri "Paratypus, 2003f printedr ed label]" (CRF).P aratypi:I !, samed atao f holotype/ Byrrhus (Rotundobyrrhusb) reviuncinatuss p. nov., det. R. Fabbri 2003 fprinted "China, red label]" (CRF); 1 i, S Gansu,S SWM inxian, NE of Luoda,N E Jiabu, "Paratypus, alpinez one,3 500-3800m , 15.VII.2002"I Byrrhus( Rotundobyrrhus) breviuncinatuss p.n ov.,d et. R. Fabbri2 003 fprintedr ed label]" (CRF). Etymology. The nameo f the new speciesd erivesf rom the combinationo f two "brevis", "uncinalrzs", latin adjectives, short, and hooked,w ith referencet o the edgeo f parameres. Description. Size:h olotypel ength7 . 4 mm, maximumw idth 4.6 mm at the middle of theb ody;p aratypesle ngth7 .7-8.1mm,w idth 4.95-5.15m m. Apterous. Body hemispheric;i ntegumentsp iceous; legs and antennaeb rown. Pronotum1 .92t imesa sb roada sl ong. Punctureso f pronotuml arge,s paceda bout twice their diametera nd umbilicate;m icrosculptures trong.E lytral striaed eeply engraveda nd emarginates, traighto r little sinuatea nd barely interrupted;s trial intervalsf lattenedo r slightly convexa nd punctate,w ith puncturess paceda bout twice their width; others parsep uncturesb iggera ndu mbilicate;e lytralt ransverse microsculpturev ery strong.U pperp art of the body clothedw ith scattereds, hort, decumbenta nd brown pubescenceo, n pronotuma nd odd elytral strial intervals with narrowb andso f longer,p rominent,b rown andhazelpubescencea;t the middle of elytra a faint transverseW -shapedp atterno f goldenh airs. Short, stronga nd erectb rown bristles,s catteredo n pronotuma nd elytra,m ore copiousa t sides. Prosternumw ith broada ndv ery densep uncturesl,e sss pacedth ant heir diameter. Prosternalp rocessa bout as wide as long, flattened and rounded at apex. Metasternumf lat, slightly emarginatein front, with very largea nd densep unctures. Abdominal sternitesw ith rough, stronglyg ranulatedp unctures,d enset ransverse microsculpturea nd shortp iliform setae. Aedeagus( Fig. 5) with asymmetricabl asalp iece;m edianl obe flat, scarcely broadeneda ndb lunt at apex,b ent over 213o f the length;s lenderp arameresw ith pointeda pex,w eakly hookeda ndb ent inwards. Gonocoxitesi n dorsalv iew (Fig. 3) little large,w ith straighti nner margin and long hairso n all theirl ength,w ell sclerifiedfor314o fthe width,b eginningf rom thei nner side.S tyli big,2.29 timesa sl ong asb road,f usiform,w ith extendedh airs. 60 Discussion.B . (R.) breviuncinatusa arrbes eparatedfr om the geographicallyn earest taxon,B . (À.) gansuensisf,o r the slenderb, ent andl essh ookedp arameresa ndt he naffowera nd curvedm edianl obe of the aedeagus. Acknowledgements We thank Pierfranco Cavazzuti from Pagno (Cuneo, Italy) who provided part of the material and Fernando Pederzani (Ravenna,I taly) for advice and editorial help. References FeeeRRr .,2000- Nuovit axaa siaticdi el getereB yrrhu.Lsi nnaeus1, 767( InsectaColeoptera Byrrhidae)Q. uadernod i Studie N otizied i StoriaN aturaled ellaR omagna1, 3,s uppl:. 27-64. FaeeRRr ., 200I - Nuoves peciee nuovid atic orologicis ulg enereB yrrhusL innaeusI, 767 "8. (ColeopteraB, yrrhidae).R ivistad el Museoc ivico di Scienzen aturali Calrt" di Bergamo2, 0 (2000):l ll-123. Authors' addresses: Roberto Fabbri, Museo Civico di Storia Naturale via De' Pisis, 24 I-44100 Ferrara e- ma íl : [email protected] t Hong-zhangZhou Institute of Zoology, CAS 19 ZhonguancunR d., Haidian 100080B eijing (P.R . China) 6l