Tome 13, fasc. 13 et dernier paru le 30 dccembre 2000

Tome 13, fasc. 13 et dernier paru le 30 dccembre 2000 Ricardo PINTO-DA-ROCHA & Wilson R. LOURENCO. Two new species of Tit_vu.s from Brazilian Amazonia (Scorpiones. Buthidae)......... 187 Sommaire du tome 13...................... 197

r. 7-7 A -.%afl:a 7 "'T -- P?., -:2v4 s Wk&..*S.#-<.A c..- r-l* 0-0, H'm. -. 0 -rc A- - 6- *. lfyas -- -5-&2---&-- b~~x~b--:& (Scorpiones, B uthidae) by K~cardo PI\ 10-OA-ROC HA & Wilson K. Lor KENCO *: permanrntr d Ama~Bnia" of thc Mu\eu de Loolog:a of the Ln~\er\~!y of Sao Two new species belonging to the Paulo dur~ng the 1970'3. and,ubsc genu4 Ttr~u\ Koch (Scorpiones, Buth~ quently depi)\~ted ln the collcct~on\ of the. ddr), dnd to the group of specles "Titvu~ hame muwum. revealed two new spec^^-\ cr>rhrn~," arc described from Brarlhdn uf T1rbu.j Arndlonla The fir\t, ritvu~ rnutrhle~mi n. The gnu4 fimu~, the mo\t,pcc~o\t. ot \p I\ trom Boca do no Matup~r~, 1-10 all the scorplon genera rn the world. W I : ~ Mddelra In the state of Arndronas and thc almo\t 150 known specle3, know5 a second. rlr\u\ unus n. \p. from SBO con\tant increase ln ~t\ number ot \pecir\ Jogo. near tu 'lhpuiuara. dlso in the State w~th new de\cnptlons taklng place ekery ot Anla~onas year To better ldentlfy a so large number of \pears In one same genus, many attempts have been done to d~vide firnus in grolps of species. The number of these LIcux noubrlles 25pbces appartenant au groups of knew a regular genre finus Koch (Scorplones. Buthidae) during the last century, comprising et au groupe d'espcces "Titvus usthenes". from to sometines 12 groups according sont decrltrh de I' Amazonie bresilienne. to the authors,e. g. KRAEPELIN, 8yy, L,a prcmibre. ritvus mutthieseni n. sp.. a k,i,i,o., I,b,L TAo. 939 : 945,. In pour Icrcalit6 typique "Boca do rlo Matu studies, te.g., y9 1, piri. ricr Madeira" dans I'Etat d' Amazo 995, y97a; 997b; 997c : in press, a,, nas. tandis que la deuxibme, Tiryus unuj retained only rhree groups of,pecltts, n. up.. a pour localite typique "SSio JoSio" namely tht,, c.luthrutus group, pres de Tapucuara, auss~ dans I'Etat rirvuj buhiensis group, and the TirvuJ d' Amamnab. usthenes group. The status of the species belonging to both the rityus t 1uthruru.s ktrod~ttion and the Tipu., huhiensis groups are much better clarified than that of the Tipu.s The study of three specimens collected ubthrnrh group (LOURH~CO, I992, In Bratilian Arnaronia by tht: "Epediqao I997b). The composition of the flrvu~ -. ~ ~ ir 30 ~ juin IC)YY. ~ Adre\,se ~ de) uureur\. ~ (R. P. ~ da- K.).,::nivcrbidade t Handvir.intr sac, hu],,, prii. Rt.itoriu P6.;-(;radua<ao e Pebquisd, rua Maria ('indicia, 1813. Sac) Pado. S.P. Bfd,i! <. mall rcrr,chdt(~.,sp.b,., w.r. L.): l.aboratc)~rt. JJ~ Loolc~g~~ : Arthropc~dcs 1. Mu~Gum.idtlrjndl Jr Huffon. '15005 Parib. trance. < rrlilil. drachne<dmnhn.fy. j-\qr,tc,irc naturcl'c. hl

Figures 1-2. - Male hoiotype of Tityus nz, atthieseni, dorsal and vental aspects. usthenes group which for long appeared to be stable, started to change with the recent description of new species (LOU- RENCO, 1997c; 1998). The two new species described in the present paper also belong to the Tityus usthenes group. Tityus matthieseni n. sp. (fig. 1-8) Material. Male holotype : Boca do rio Matupiri (0" 30's - 61" 10' W), rio Madeira, Amazonas, Brazil, 11.XII. 1975, Expedi~go permanente a Amazania leg., MZSP-15,174. Collected over brushes on "Terra Firme" forest at a rainy night. Deposited in the Museu de Zoologia, University of Sgo Paulo. Etymology. Patronym in honor of Dr Fabio A. Matthiesen, formerly of the Universidade Estadual Paulista, Rio Claro, for his contribution to the study of the biology of scorpions. Description. Based on male holotype. Measurements in table I. Coloration. Basically brownish. Anterior portion of carapace with a triangle darker than the remainder parts of body. Ocular tubercle blackish, surrounded by a large black stripe.vesicle paler than segment V. Pedipalps yellowish, except

Two new Tityus from Brazilian Amazonia Figures 3-8. - Tityus matthieseni (holotype). 3-6: trichobothrial pattern; 3, chela, external aspect; 4, tibia, external aspect; 5, tibia, dorsal aspect; 6, femur, dorsal aspect. 7: telson, lateral aspect. 8: pecten. - Scale bar: 2 mm (figs 3-7 at same scale). for the fingers, apex and base of femur, and apex and base of tibia that are darker. Legs brownish with diffuse yellowish spots, tarsus yellowish. Morphology. Carapace strongly granular ; anterior margin with a median concavity. Anterior median superciliary keels moderate, posterior median keels strong. Medio-posterior and latero-posterior furrows very deep, other furrows moderate. Eyes separate by more than one ocular diameter. Three pairs of lateral eyes. Sternum subtriangular.

,tlcsosoma. Tergites I-VI moderately granular : V 11 strongly granu:ar. Median keel increasing backward, on segment VI with half of segmen: :ength. Tergite VII tetracarinate. Venter : genital operculum div ided longitudina1:y. Pectines. 20 pec tina: teeth ; basal middle!amel!ae of pec tines not dilated. Metawma. Segments I IV with dorso.- latcral and lateral 5upramediar keels crenulate ; lateral infrarnedian kcels or. segmert I of moderate sire, crenu:ate; on I I\ weakly de\eloped. Ventroiateral keels stronger than other. crenulate. Interiarinal spaces feehl) granular. Segment V with one vectron:cdian kecl. ventrolateral and dorsomedian keels weakly dcke lopped. dorsomedian space smooth. Tel- \on feebly minutely granulate, with a long acl;lrus: subaculex tooth strong and \pinoid. Chel~czral dentition characteristic of the fam~jy Buthldae ( VACH~. 1963). Ventral aspect of both fingers and manus with dense and long setae. Pedipalp. Femur pentacarinate ( ventrolateral kccli lestigia:): tibia with 7 keels; chela with 6 kcels. Movable fingers with 16 oblique rows of granules. rrichobothriotaxy : orthobothriotaxq A-cx I VA(.HO%. 1973 : 1975 ). 1,t.g~ r tar\u\ ventrally wixh :iumerous short and fine \etar. Female unknown. Taxonomic position. Thc new species belongs to the Tious usthrnrs group of species. It can be associated w:th Tihus tuc.urui Idourenc;o. 1988 ; however. it can readily be distinguished from this last species by different morphometric values. with lesh bulky pedipalps and metasomal segment V (scc table 1) and by a diffcrent disposition of sorne trichobothria: esh and rh in fixed finger and Et in the chela being more basal than in T. rucurui. Besides the geographical range of distri but~on of the two spccles arc d;\o dr\trn~t (fig. 19) Tityus unus n. sp. (fig. 9-18) Material Zlale?.olot)pc from $50 Jo2o de Marauld!O 27' 5 66' 7' W *. near to Tdpkril~~drd. \md6oild\. flrdll' X : 972. ExpedqBo pennanente a X:na/h kg. hlzsp- 15.1 7? Female allotype same data a\ holoty?~ L)cptrs.ted Ir tbc muse^ tie Loologla. I?.csr\l:y ot Sac, Paulo Etymology "l nu\'' :s dn dd,rl~t~\c from Tupi I Rra~ii~an snj~dn 'angaagr : that mean\ black. :ILL thc r.cw \pccles Description,tfule. Cvloratlon Basrca,iy hldc.k~\h brown. Oc.u;ar tubercle hlack~sh. darker than carapacc, and surrounded hy * 761 row black stri?e. Ves~cle paler thdn seg ment L, acu;eus reddlih brown \tern trr I11 w~th a yellowrsh trlanglc u rth thc bast wder than h~gh PedtpaLps r.)o~. 4h. except fingers, femur apex. ba4e and apex of tlbld. that dre ddrker I.eg\ nrc>wnl\h with diffuse yeilaw~\n pdtlnes. apex or bas~tarsus and tanus yellow sh Morphology Carapace strongly gra nular. anterior margtn w.th a t11ed1a11 concav lty interior rned,an \uperc ~:~ary keels developed. posterlor nledtan keel\ strong Median posterror f~rrou verb deep, other furrow\ rrclderdte Fyc\ separatc by more. than one ocular i!~amc. tcr. Three pairs of latcra cyes. S:ernuvn subtriangu:ar, Mesosoma. 'T'ergites I VII >t:.onglj gra nular. Median heel increah~ng backward. on segment VI nith more than half of the scgment lenght, Tergrte VII tetracarinate. Vcntcr ge~ilal oprrculu:n cfi, ~dcd :clnp tudina:ly Pcctincs: 19-21 pectinal teeth. basal middlc lamellac of' pccti:~cs not dilated -- -- - Figures 9-12. - "Vale holotype and fern2 tie allorype od r~nu, uriu~, dona: dnd vcntrat aspects.

Two new Tityus from Brazilian Amazonia

Figures 13-18. - Tifyus unus (holotype). 13-16: trichobothrial pattern; 13, chela, external aspect; 14, tibia, external aspect; 15, tibia, dorsal aspect; 16, femur, dorsal aspect. 17: telson, lateral aspect. 18: pecten. - Scale bar: 2 mm (figs 13-17 at same scale). Metasoma. Segments I-IV with dorsolateral and lateral supramedian keels crenulate; lateral inframedian keels on segment I of moderate size, crenulate; on segments I-IV weakly developed ; one pair of lateral keels vestigial on segments 11-111, absent on IV-V. Intracarinal spaces feebly granular in all segments. Segment V with one ventromedian keel; ventrolateral and dorso-median weakly developed ; dorso-median space smooth. Telson

Two new Tityus from Brazilian Amazonia male Carapace length 7.8 anterior width 6.2 posterior width 7.9 Metasomal segment I length 5.8 width 4.2 Metasomal segment V length 9.6 width 4.4 depth 4.4 Vesicle width 3.2 depth 3.0 Pedipalp femur length 11.8 width 2.2 tibia length 12.3 width 2.9 chela length 19.9 width 2.6 depth 2.4 Movable finger length 11.7 male female male female male female male Table I. - Measurements (in millimetres) of the two new described species in comparison to other species of the group "Tityus asthenes". feebly granular, with a long aculeus; subaculear tooth strong and spinoid. Cheliceral dentition characteristic of the family Buthidae (VACHON, 1963) ; ventral aspect of both fingers and manus with dense and long setae. Pedipalps : femur pentacarinate (ventro-lateral vestigial) ; tibia with 8 keels ; chela long and slender, with 6 keels; movable fingers with 17 oblique rows of granules. Trichobothriotaxy : orthobothriotaxy A-a (VACHON, 1973 ; 1975). Legs : tarsus ventrally with numerous short and fine setae. Female. General coloration much darker than that of male; sternite 111 with a yellowish triangle with the base narrower than high. Metasomal segments shorter than male (see table I) ; segment I11 with vestigial keels. Venter: basal middle lamellae of pectines dilated; pectines with 19-20 tooth. Pedipalps shorter and more bulky than male.

(1 D Y Tityus cambridgei V Tityus tucurui Tityus matthieseni Figure 19. - Map of Amazonia showing the known distributions of Tityus cambridgei, 7: tucurui, and the type localities of Tityus matthieseni and Tityus unus. Taxonomic position. The new species belongs to the Tityus asthenes group of species. It can be associated with Tityus catnbridgei Pocock, 1897 ; however, it can readily be distinguished from this last species by some differences in the morphometric values (see table I) and by a different disposition of some trichobothria, et and est in fixed finger being more proximal and Est in the chela being more basal than in 7: cambridgei. Besides the geographical range of distribution of the two species is also distinct (fig. 19). References KRAEPELIN, K., 1899. - Scorpiones und Pedipalpi. In: Das Tierreich, 8 : 1-265. Fiedlander Verl., Berlin. LOURENCO, W.R., 1992. - BiogCographie des espkces du groupe nature1 "Tityus clathratus" (Chelicerata, Scor- piones, Buthidae). - Bulletin du Muse'urn national d'histoire naturelle, Paris, 42me skr., 14 (A2) : 473-481. LOURENTO, W.R., 1995. - Les Scorpions (Chelicerata, Scorpiones) de I'Equateur avec quelques considcrations sur la biogeographie et la diversit6 des espkces. -Revue suisse de Zoologie, 102 (1): 61-88. LOURENCO, W.R., 1997a. - Synopsis de la faune de scorpions de Colombia, avec des consid6ration.s sur la systcmatique et la biogkographie des espkces. - Revue suisse de Zoologie, 104 (1) : 61-94. LOURENCO, W.R., 1997b. -A propos de deux nouvelles espkces de Tityus Koch du BrCsil (Scorpiones, Buthidae). - Revue Arachnologique, 12 (5) : 53-59.

T i new Tityus from Brazilian Amazonia I LOURENGO, W.R., 1997c. - Additions L la faune de scorpions ncotropicaux (Arachnida).- Revue suisse de Zoologic, 104 (3) : 587-604. LOURENCO, W.R., 1998. -A new species of Tityus C.L. Koch, 1836 (Scorpiones, Buthidae) to Colombia, with a checklist and a key to the Colombian species of the genus. - Zoosystema, 20 (3) : 487-497. LOURENGO, W.R. (in press a). - A guide to the scorpions of Brazil. - Me'moires de la Socie'te' de Biobe'ographie. MELLO-LEITAO, C., 1939. - Revisiio do ggnero Tityus. - Physis, 17 : 57-76. MELLO-LEITAO, C., 1945. - Escorpioes Sul Americanos. - Arquivos do Museu National, Rio de Janeiro, 40 : 1-468. VACHON, M., 1963. - De lyutilitc, en systcmatique, d'une nomenclature des dents des chclic2res chez les Scorpions. -Bulletin du Muse'um national d'histoire naturelie, Paris, (2) 35 (2) : 161-166. VACHON, M., 1973. - Etude des caractkres utiliscs pour classer les familles et les genres de Scorpions (Arachnides). 1. La trichobothriotaxie en arachnologie. Sigles trichobothriaux et types de trichobothriotaxie chez Ies Scorpions. - Bulletin du Muse'um national d'histoire naturelle, Paris, sir. 3, n0140, Zool. 104 : 857-958. VACHON, M., 1975. - Sur l'utilisation de la trichobothriotaxie du bras des pcdipalpes des Scorpions (Arachnides) dans le classement des genres de la famille des Buthidae Simon. - Cornptes rendus des se'ances de I'Acade'mie des Sciences, Paris, 281, scr. D : 1597-1599.