The new subfamily Sibumbellinae (Trombellidae) and new genus Sibumbella for the type species Sibumbella esterae n. sp. from Croatia are described.U radu su opisane nova potporodica Sibumbellinae (Trombellidae) i novi rod Sibumbella za tipsku vrstu Sibumbella esterae n. sp. iz Hrvatske

R. Haitlinger

Hrčak - Portal of scientific journals of Croatia

original scientific paper / izvorni znanstveni radSIBUMBELLA ESTERAE N. SP., N. GEN., WITHTHE DESCRIPTION OF THE NEW SUBFAMILYSIBUMBELLINAE (ACARI: PROSTIGMATA:TROMBELLIDAE) FROM CROATIARYSZARD HAITLINGERDepartment of Zoology and Ecology, Agricultural University,51-631 Wroclaw, Kozuchowska 5b, Poland(E-mail: rhait@ozi.ar.wroc.pl)Haitlinger, R.: Sibumbella esterae n. sp., n. gen., with the description of the new subfamilySibumbellinae (Acari: Prostigmata: Trombellidae) from Croatia. Nat. Croat., Vol. 14, No. 2., 141–146,2005, Zagreb.The new subfamily Sibumbellinae (Trombellidae) and new genus Sibumbella for the type speciesSibumbella esterae n. sp. from Croatia are described.Key words: Acari, Trombellidae, Sibumbellinae, Sibumbella esterae, new subfamily, new genus, newspecies, CroatiaHaitlinger, R.: Sibumbella esterae n. sp., n. gen., s opisom nove potporodice Sibumbellinae (Acari:Prostigmata: Trombellidae) iz Hrvatske. Nat. Croat., Vol. 14, No. 2., 141–146, 2005, Zagreb.U radu su opisane nova potporodica Sibumbellinae (Trombellidae) i novi rod Sibumbella za tipskuvrstu Sibumbella esterae n. sp. iz Hrvatske.Klju~ne rije~i: Acari, Trombellidae, Sibumbellinae, Sibumbella esterae, nova potporodica, novi rod,nova vrsta, HrvatskaINTRODUCTIONDuring a visit to Croatia, a specimen whose main features were typical of thefamily Trombellidae (SOUTHCOTT, 1987) was collected. This specimen differs from allknown genera in this family (based on larvae) in details of the scutum. Therefore,based on this new species, a new genus and new subfamily have been created. InCroatia 16 species belonging to terrestrial Parasitengona were known hitherto (HAIT-LINGER, 2004). Trombellid mites have not been reported from Croatia and only one spe-cies known from larvae was previously found in Europe (BERLESE, 1902; FEIDER, 1958).The subfamily Trombellinae was created by THOR (1935), who divided the familyTrombidiidae Leach into 10 subfamilies. FEIDER (1955) formally proposed the familyNAT. CROAT. VOL. 14 No 2 141¿146 ZAGREB June 30, 2005Croatian Natural History Museum, Demetrova 1, Zagreb, CroatiaTrombellidae and SOUTHCOTT (1982) the genera Chyzeria, Ralphaudyna, Nothotrombicula,Audyana and Trombella (= Womersleya sic) in the family Trombellidae. Later the familyTrombellidae included Womersleya Radford, Nothrotrombidium Womersley, Durenia Ver-cammen-Grandjean, Parathrombella Andre, Neonothrothrombidium Robaux, RalphaudynaVercammen-Grandjean and Maiputrombella Southcott (SOUTHCOTT, 1982; 1986). Trom-bella, Chyzeria, Durenia, Audyana and Nothrotrombidium are known only as larvae orwith adults. Now, the family Trombellidae is restricted only to four genera: Trombella,Nothrotrombidium, Womersleya and Durenia. Details of the decision are explained bySOUTHCOTT (1987). SOUTHCOTT (1987) proposed the following definition for larvalTrombellidae: »with one dorsal propodosomal scutum, which projects anteriorly to anarrowed extension or nasus. Dorsal scutum with eight setae, comprising 2 ALs, 2PLs, 2AMs, and 2 well separated sensillary setae, placed between ALs and PLs. Eyes 2+ 2. Leg segmental formula 6,6,6. Coxae separated. Pedotarsal claws 1,1,1, or 1,1,2.Supracoxalae absent«.MATERIAL AND METHODSThe larva was collected from herbaceous plants. The specimen was preserved inethanol and then mounted in Berlese’s medium. All measurements are in microme-ters. The holotype is deposited at the Museum of Natural History, Wroclaw Univer-sity, Poland (MNHWU). The terminology is based on HAITLINGER (1999).RESULTSFamily – Trombellidae Thor, 1935Sibumbellinae n. subfamilyDiagnosisOne dorsal scutum with six setae: barbed pair PL, pair AM and sensillary pair Splaced beyond PL, at posterior border of scutum. Scutum without nasus or withlong, narrowing, anterior part. Coxal setal formula 2,1,1. Pedotarsal claws 1,1,1.Palpal setal formula 1,1,2,7. Genu I–III and femur I–III both with many solenidia.Anterior part of ventral base of gnathosoma wide.Sibumbella n. gen.DiagnosisWith features as in the diagnosis for the subfamily.Type species: Sibumbella esterae n. sp.Sibumbella esterae n. sp.DiagnosisfD 28, fV 20, fSoTa 0-1-1, fSoTi 1-2-2, fSoGe 4-4-6, fSoFe 7-5-8, TaI 76, TiIII 58.142 Haitlinger, R.: Sibumbella esterae n. sp., n. gen. from CroatiaEtymologyThe name of the species has been derived from the name Estera.MaterialLocus typicus: holotype larva, Croatia, [ibuljina n. Starigrad, 6.VII.2002, from plants;leg. R. Haitlinger; MNHWU.DescriptionIdiosoma longer than wide with 28 barbed dorsal setae arranged 2-6-6-6-6-2 (Fig.1). Eye cornea 8 m (proximal) and 12 m (distal) across, both on platelet. Scutumlonger than wide with straight posterior border and convex and narrowing anteriorborders. It bears six setae: one pair of barbed scutalae PL, barbed AM and sensillarysetae (S) placed at posterior border of scutum, both damaged. Two lines surroundingsetae AM present (Fig. 3).Ventral surface with a pair of setae 3a and 20 barbed setae beyond coxae III ar-ranged 7-5-2-2-2-2 (Fig. 2). Two coxalae 1b, coxala 2b and coxala 3b, all barbed(Figs. 8–10). NDV=28+20=48. Gnathosoma with relatively wide base and weaklybarbed hypostomalae (sc1) (Fig. 4); chelicerae as in Fig. 6. Palpfemur and palpgenu,each with one barbed seta, palptibia with three barbed setae (Fig. 5). Palptarsuswith six barbed setae and one nude seta (Fig. 7). Metric data are given in Tab. 1.Setal formula of legs. Leg I: Ta 1, 18B; Ti 2, 1, 6B; Ge 6, 1, 4B; Fe 8, 5B; Tr1B (Fig. 8).Leg II: Ta 1, 1, 15B; Ti 2, 7B; Ge 4, 4B; Fe 5, 7B; Tr 1B (Fig. 9).Nat. Croat. Vol. 14(2), 2005 143Figs. 1–2. Sibumbella esterae n. sp. 1. Idiosoma, dorsal view. 2. Idiosoma, ventral view.Leg. III: Ta 16B; Ti 1, 7B; Ge 4, 5B; Fe 7, 6B; Tr 1B (Fig. 10). Leg lengths: I 296, II290, III 328. Ip=914.RemarksThe larva collected in Croatia has the following features which differ from otherlarval trombellid genera: 1) scutum without nasus or scutum with long narrowinganterior part; 2) scutum with six setae (with sensillary setae) – feature commonwith Chyzeridae; 3) position on sensillary setae S: placed beyond scutalae PL atposterior border of scutum.Sibumbella differs from the genus Womersleya in pedotarsal claws formula 1,1,1 vs1,1,2 and lack large solenidion on tibia III vs large solenidion present; from Durenia inpedotarsal claws formula 1,1,1 vs 1,1,2 and from Nothrotrombidium in coxal setal for-mula 2,1,1 vs 1,1,1, and hypostomalae present vs absent hypostomalae. Based on theabove-mentioned characters a new species, a new genus and a new subfamily havebeen created.The definition by SOUTHCOTT (1987) for the family Trombellidae needs reformula-tion. I propose a new definition of this family taking into consideration the diagnosticcharacters for the new subfamily. Larva: Trombidioidea with one dorsal propodosomalscutum, which projects anteriorly to a narrowed extension or nasus or weakly narrow-ing in anterior part. Dorsal scutum with 6 or 8 setae, 2 AL, 2 PL, 2 AM and 2 S or 2144 Haitlinger, R.: Sibumbella esterae n. sp., n. gen. from CroatiaFigs. 3–7. Sibumbella esterae n. sp. 3. Scutum. 4. Base of gnathosoma. 5. Palp, dorsal view. 6.Chelicerae. 7. Palptarsus with fragment of palptibia.Nat. Croat. Vol. 14(2), 2005 145Tab. 1. Metric data for Sibumbella esterae n. sp. from CroatiaIL 787 PsFd 30IW 698 PsGd 24L 72 eye* 8W 46 eye** 12AW 16 TaI 76PW 36 TiI 50AA 8 GeI 40SB 14 FeI 60ISD 50 TrI 26AP 42 CxI 44AL 20 TaII 76PL 24 TiII 46AM 18 GeII 36S broken FeII 58DS 32–46 TrII 282a 32 CxII 461b* 40 TaIII 861b** 38 TiIII 582b 44 GeIII 423b 44 FeIII 62GL 72 TrIII 40sc1 ?20 CxIII 40eye* proximal cornea, eye** distal corneaFigs. 8–10. Sibumbella esterae n. sp. 8. Leg I, tarsus-coxa. 9. Leg II, tarsus-coxa. 10. Leg III, tar-sus-coxa.AL, 2 AM, 2 S. Sensillary setae S placed between AL and PL setae or beyond setae PL.Eyes 2+2. Leg segmental formula 6,6,6. Coxae separated. Pedocoxal formula 2,1,1 or1,1,1. Pedotarsal claws 1,1,1 or 1,1,2. Supracoxalae absent.Subfamily Trombellinae: dorsal scutum with 8 setae, propodosomal scutum,which projects anteriorly to a narrowed extension or nasus; sensillary setae S plac-ed between scutalae AL and PL.Subfamily Sibumbellinae: dorsal scutum with 6 setae, propodosomal scutumwith short narrowing anterior part; sensillary setae S placed beyond scutalae PL.Received September 22, 2004REFERENCESBERLESE, A. 1902: Descrizione e figura della Trombella otiorum n. sp. Riv. pat. veg. 1, 17–128.FEIDER, Z., 1955: Acarina Trombidioidea. Fauna R. P. Rom. 5, 1–186.FEIDER, Z. 1958: Prima larva din familia Trombellidae (Acarina) obtinuta prin cultura si desprenoua caracterizare a familiei. Acad. R.P.R. Fil. Iasi Stud. Cerc. Sti. Biol. Sti. Agric. 9, 265–282.HAITLINGER, R., 1999: Three new larval mites (Acari: Prostigmata: Eutrombidiidae, Erythraei-dae, Trombellidae) from Australia, Turkey and Thailand. Zeszyty Naukowe AkademiiRolniczej we Wroclawiu, Zootechnika 45, 362, 57–73.HAITLINGER, R., 2004: New records of mites (Acari: Prostigmata: Erythraeidae, Trombidiidae,Eutrombidiidae) from Croatia, with descriptions of three new species. Nat. Croat. 13(2),143–160.SOUTHCOTT, R. V., 1982: Observation on Chyzeria Canestrini and some related genera (Acarina:Trombidioidea) with remarks on the classification of the superfamily and description of apygmephorid mite phoretic on Chyzeria. Rec. S. Aust. Mus. 18, 285–326.SOUTHCOTT, R. V.: 1986: On Trombella alpha n. sp. (Acarina: Trombellidae) from Australia; correla-tion, description, developmental abnormalities, systematics and probable auditory structures.Rec. Aust. Mus. 19, 145–168.SOUTHCOTT, R. V., 1987: The classification of the mite families Trombellidae and Johnstonianidaeand related groups, with the description of a new larva (Acarina: Trombellidae: Nothrotrom-bidium) from north America. Trans. Roy. Soc. S. Aust. 3, 25–42.THOR, S., 1935: Übersicht und Enteilung der Familie Trombidiidae W. E. Leach 1814 in Unter-familien. Zool. Anz. 109, 107–112.146 Haitlinger, R.: Sibumbella esterae n. sp., n. gen. from Croatia

Sibumbella esterae n. sp., n. gen., s opisom nove potporodice Sibumbellinae (Acari: Prostigmata: Trombellidae) iz Hrvatske

Abstract

Similar works

Full text

Available Versions

Hrčak - Portal of scientific journals of Croatia

HRČAK - Portal of Croatian Scientific and Professional Journals