A new species of Pronura Delamare Debouteville, 1953, Pronura bidoup n. sp. is described from the Bi Doup massif in southern Vietnam, where it is largely distributed above 1,350 m. The new species exhibits a combination of characters unusual for the genus: shift of chaeta f towards chaeta e on labium, large central reticulate plate on head, presence of microchaetae on furcal rest, reduced chaetotaxy of legs and abdominal segment VI. It is related to Pronura ornata Deharveng & Bedos, 1993 from high altitude in Thailand

Deharveng, L.

Smolis, A.

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1 Animal Biodiversity and Conservation 25.2 (2002)© 2002 Museu de Ciències Naturals ISSN: 1578–665XDeharveng, L. & Smolis, A., 2002. Pronura bidoup n. sp. (Collembola, Neanuridae, Neanurinae, Paleonurini)from southern Vietnam. Animal Biodiversity and Conservation, 25.2: 1–5.Abstract Abstract Abstract Abstract AbstractPronura  bidoup  n.  sp.  (Collembola,  Neanuridae,  Neanurinae,  Paleonurini)  from  southern  Vietnam.—  A  newspecies of Pronura Delamare Debouteville, 1953, Pronura bidoup n. sp. is described from the Bi Doup massif insouthern Vietnam, where it is largely distributed above 1,350 m. The new species exhibits a combination ofcharacters unusual for the genus: shift of chaeta f towards chaeta e on labium, large central reticulate plate onhead, presence of microchaetae on furcal rest, reduced chaetotaxy of legs and abdominal segment VI. It isrelated to Pronura ornata Deharveng & Bedos, 1993 from high altitude in Thailand.Key words: Pronura bidoup n. sp., Collembola, Neanuridae, Vietnam.Resumen Resumen Resumen Resumen ResumenPronura bidoup sp. n. (Collembola, Neanuridae, Neanurinae, Paleonurini) del sur de Vietnam.— Se describe unanueva especie de Pronura Delamare Debouteville, 1953, Pronura bidoup sp. n., del macizo Bi Doup, situado enel sur de Vietnam, donde se distribuye ampliamente por encima de los 1.350 m de altitud. Esta nueva especiepresenta una serie de caracteres poco usuales para el género: desplazamiento de la queta f hacia la queta e enel  labium,  placa  central  grande  reticulada  en  la  cabeza,  presencia  de  microquetas  en  la  base  de  la  furca,quetotaxia reducida en las patas y en el segmento abdominal VI. P. bidoup sp. n. está relacionada con P. ornataDeharveng y Bedos, 1993, que se encuentra a gran altitud en Tailandia.Palabras clave: Pronura bidoup sp. n., Collembola, Neanuridae, Vietnam.(Received: 7 III 02; Conditional acceptance: 7 V 02; Final acceptance: 6 VI 02)1 Louis Deharveng, Museum National d’Histoire Naturelle, Laboratoire d’Entomologie, ESA 8043 du CNRS, 45rue Buffon, 75005–Paris, France.2 Adrian Smolis, Zoological Institute of Wroclaw Univ., Sienkiewicza 21, 50–335 Wroclaw, Poland.1 E–mail: deharven@mnhn.fr2 E–mail: adek@biol.uni.wroc.plPronura bidoup n. sp.(Collembola, Neanuridae, Neanurinae,Paleonurini) from southern VietnamL. Deharveng1 & A. Smolis22 Deharveng & SmolisIntroductionThe  Bi  Doup  massif  above  Dalat  in  southernVietnam has retained large patches of undisturbedprimary forest, which host a very rich Neanurinaefauna including more than 25 species, all new toscience (Deharveng & Le Cong Kiet, pers. com.). Inthis paper, we describe Pronura bidoup n. sp., amorphologically remarkable species of the genusPronura Delamare Debouteville, 1953, related toPronura ornata Deharveng & Bedos, 1993, knownfrom  the  top  of  Doi  Inthanon,  the  highestmountain of Thailand.Material and methodsThe terminology and abbreviations used in thetext and the tables are standard conventions fortaxonomic  descriptions  in  the  subfamilyNeanurinae (DEHARVENG, 1983, modified).Abbreviations used in the text and tablesTypes  of  chaetae:  bms.  Buried  s–microchaeta;  M.Macrochaeta;  me.  Mesochaeta;  mi.  Microchaeta;ms. S–microchaeta; or. Organite of antenna IV; S.S–chaeta; x. Labial papilla.General morphology: abd. Abdominal segment;ant. Antennal segment; th. Thoracic segment.Chaetal  groups  and  tubercles  on  head:  Af.Antenno–frontal; CL. Clypeal; De. Dorso–external;Di. Dorso–internal; DL. Dorso–lateral; L. Lateral ;Oc.  Ocular;  So.  Subocular;  Ve.  Ventro–external;Vi. Ventro–internal; VL. Ventro–lateral.Chaetal groups and tubercles on tergites: De.Dorso–external;  Di.  Dorso–internal;  DL.  Dorso–lateral; L. Lateral.Chaetal groups and tubercles of sternites: Ag.Ante–genital;  An.  Anal;  Fu.  Furcal;  Ve.  Ventral;VL.  Ventro–lateral.Appendages: Cx. Coxa; Fe. Femur; Scx2. Subcoxa2; Tr. Trochanter; Ti. Tibiotarsus; VT. Ventral tube.Types  are  deposited  in  the  Museum  Nationald’Histoire Naturelle de Paris.ResultsPronura bidoup n. sp. (tables 1, 2; figs. 1–6)Studied  materialHolotype  female  and  one  paratype  female.Vietnam,  Lam  Dong  province,  Bi  Doup  massif,Nui Gia Rich, 1hr 1/2 from Klong Lanh by foot,1,440 m, litter, Berlese extraction, 18 XII 98, leg.L.  Deharveng  &  A.  Bedos  (sample  VIET–689).Types mounted on slides in Marc–André II.Additional specimens (leg. L. Deharveng & A. Bedos)Vietnam,  Lam  Dong  province,  Bi  Doup  massif:1,545 m,  litter,  Berlese  extraction,  28  II  97,8 specimens  (sample  VIET–281);  ibid:  1,900  m,litter,  Berlese  extraction,  1  III  97,  2 specimens(samples VIET–302, VIET–304); ibid: near the schoolof Klong Lanh, 1,410 m, litter, Berlese extraction,18 XII 98, 8 specimens (sample VIET–675).  Vietnam,Lam  Dong  province,  near  Dalat,  Cam  Ly  area,1,380  m,  litter,  Berlese  extraction,  16  XII  98,2 specimens (samples VIET–657, VIET–665).DescriptionLength: 0.55 to 0.75 mm. Colour: white in alcohol.Dorsal tubercles weak or absent; only the tuberclesof  head  and  of  abd.  V  and  VI,  and  the  dorso–lateral tubercles of abd. II–IV are well developed;they  are  constituted  by  stronger  secondarygranules,  with  tertiary  granules  and  slightreticulation on head. In some specimens, secondarygranules are slightly stronger on the axial area ofthe  tergites  where  Di  chaetae  are  more  or  lessgrouped. Dorso–internal tubercles of abd. V notoverhanging abd. VI. Homochaetotic clothing ofsmooth,  slender,  tapering  and  curved  meso-chaetae,  with  frequent  asymmetries.  S–chaetaeon  abd.  I–V  thin,  1.5  to  3  times  longer  thannearby  mesochaetae.Head (table 1, figs. 1, 2, 4). S–chaetae of ant. IVthick and rather short, like in P. ornata (figured inDEHARVENG & BEDOS, 1993); apical vesicle of ant.IVfused  to  the  apex,  hardly  distinct.  Buccal  conerather  elongate  compared  to  that  of  P.  ornata;labrum rounded at the apex; labium with chaetaeA, C, D, E, F, G, d, e and f, with f closer to e thanto G, and a minute x papilla (fig. 4); chaeta c (orpossibly  d)  not  observed.  Maxilla  styliform,mandible  tridentate.  Ocelli  either  absent,  orpossibly 2+2 covered with primary granules andnot clearly distinct from secondary granules. Theclypeal, antennal, frontal and ocular tubercles arefused in a single central plate, with a completeset of chaetae (A, B, C, D, E, F, O, Oca, Ocm, Ocp),and 2 to 4 additional chaetae between A and B,often  asymmetrically  arranged.  Laterally,  thetubercles DL, L and So are fused in a unique plate.Tergites (table 2, figs. 1, 5). No plurichaetosisnor  additional  S–chaetae.  Strong  and  irregularintegument bumps on abd. IV and sometimes onabd.  II  between  and  behind  the  dorso–externaland dorso–lateral chaetal groups. Dorso–internalchaetae  shift  towards  dorso–external  ones  onabd. V. One lateral chaeta L on abd. V, withouttubercle.  Abd.  VI  not  bilobed,  with  an  unevenchaeta and a reduced chaetotaxy.Sternites  and  appendages.  Chaeta  M  absenton tibiotarsi. Vestigial furcal microchaetae of thesternites  of  abd.  III–IV  very  distinct,  on  a  smallsmooth  plate  (fig.  6).  Genital  plate  with  4–5(female)  or  6  (male)  circumgenital  chaetae,  and2 (female)  or  4+4  (male)  genital  chaetae;  nomodified  chaetae  in  the  male  (male  specimenfrom  VIET–281).Derivatio  nominisThe new species is named after its type locality.Animal Biodiversity and Conservation 25.2 (2002) 3Figs. 1–6. 1,  2, 4–6. Pronura bidoup n. sp.: 1. Dorsal view; 2. Central plate on head; 4. Labium; 5.Tubercle (Di + De + DL) on abd. V; 6. Furcal rest with its 6 microchaetae. 3. Pronura ornata Deharveng& Bedos, 1993, labium.Figs. 1–6. 1, 2, 4–6. Pronura bidoup sp. n.: 1. Vista dorsal; 2. Placa central de la cabeza; 4. Labium; 5.Tubérculo (Di + De + DL) del segmento abdominal V; 6. Base de la furca con 6 microquetas. 3. Pronuraornata Deharveng & Bedos, 1993, labium.2–6 2–6 2–6 2–6 2–6 27  27  27  27  27 m m m m m   9    9    9    9    9 m m m m m 1 1 1 1 14 Deharveng & SmolisTable 1. Cephalic chaetotaxy of Pronura bidoup n. sp.: G. Group of chaetae; Tu. Tubercle; N. Numberof chaetae; Ty. Type of chaetae; * other chaetae not analysed on ant. IV.           .Tabla 1. Quetotaxia cefálica de Pronura bidoup sp. n.: G. Grupo de quetas; Tu. Tubérculo; N. Númerode quetas; Ty. Tipo de queta; * en antena IV no se analizaron otras quetas.G                       Tu         N Ty     ChaetaeCL + Af + 2Oc yes 23–25 me A, B, C, D, E, F , O, Oca, Ocm, Ocp and 2–4 additional chaetaeDi (yes) 1 me Di1De  yes 3 me De1, Di2, De2DL + L + So yes 2 M14 meVi 5 meVe 6–7 mePrelabral ?  ?Labrum basal 2 meLabrum distal 2 me2MLabium 1 M F 8 me A, C, D, E, G, d, e, f1xAnt. I 7 meAnt. II  11 meAnt. III  16 me2 S S2, S53 ms s1, s3, s4Ant. IV* 8 S S1 to S81 bms orTable 2. Post–cephalic chaetotaxy of Pronura bidoup n. sp.: * 1 mi on the upper valve and ?2 mion  the  lateral  valves.Tabla 2. Quetotaxia postcefálica de Pronura bidoup sp. n.: * 1 mi en la valva superior y ?2 mi enlas valvas laterales.Di De DL L Scx2 Cx Tr Fe TiTh. I 1 2 1 – 0 3 5 12 18Th. II 3 3+S 3+S+ms 3 2 7 5 11 18Th. III 3 3+S 3+S 3 2 8 5 10 17Abd. I 2 2+S 2 3–(4) VT:  4Abd. II 2 2+S 2 3–(4) Ve: 4–5  (Ve1 present)Abd. III 2 2–(3)+S 2 3 Ve: 4          Fu: 3 me, 6 miAbd. IV 2   — (1+S, 3) —— 5 Ve: 8 VL: 4Abd. V  ——— (S+4–5) —— 1 Ag: 3 VL: 1Abd. VI (6+6+1) ————— Ve: 11          An: 1–2 mi*Animal Biodiversity and Conservation 25.2 (2002) 5DiscussionWith its clothing of subequal chaetae, its strongocular  reduction,  its  large  central  plate  andsupernumerary chaetae on head and its reducedchaetotaxy on legs and abd. VI, Pronura bidoupn. sp. is close to Pronura ornata Deharveng &Bedos,  1993  from  Doi  Inthanon  in  northernThailand.  Both  are  limited  to  moutain  foresthabitats in their respective region. They differin their labial chaetotaxy (chaeta f much closerto G than to e in ornata, closer to e than to G inbidoup),  their  furcal  remnant  (microchaetaepresent  in  bidoup,  absent  in  ornata),  and  anumber of chaetotaxic details. The labium of P.ornata is quite unusual among Paleonurini, withthe  chaeta  f  shift  towards  G  like  in  severalother unrelated species of Neanurinae with shortbuccal  cones  (like  Coecoloba  sp.,  figured  inDEHARVENG,  1983).As  the  two  species  share  a  number  ofsingular characters among Paleonurini, we donot however consider this striking differencein  labial  chaetotaxy  to  be  phyleticallymeaningful, though it would deserve deeperinvestigation.AcknowledgementsProf.  Le  Cong  Kiet  (University  of  Ho  Chi  MinhCity, department of Ecology and Botany) and theForest authorities of Dalat efficiently organisedour expeditions to the Bi Doup massif. UniversitéPaul  Sabatier  and  Bourse  Germaine  Cousin  ofthe Société Entomologique de France financiallysupported part of the field work. We also thankan anonymous reviewer for useful comments onan earlier version of the manuscript.ReferencesDEHARVENG, L., 1983. Morphologie évolutive desCollemboles  Neanurinae  en  particulier  de  lalignée  néanurienne.  Travaux  du  Laboratoired’Écobiologie  des  Arthropodes  édaphiques,Toulouse, 4: 1–63.DEHARVENG, L. & BEDOS, A., 1993. New Paleonuraand Pronura species (Collembola, Neanurinae)from Thailand. Zoologica Scripta, 22: 183–192.DELAMARE DEBOUTTEVILLE, C., 1953. Collemboles duKilimandjaro  récoltés  par  le  docteur  GeorgeSalt. Ann. Mag. Hist. Nat., 12(6): 817–831.

Pronura bidoup n. sp. (Collembola, Neanuridae, Neanurinae, Paleonurini) from southern Vietnam

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