Curreiil I Icrpctalof-y 20(2): 69-76, December 2001 

 © 2001 by The Hcrpetological Society of .lapan 



Genetic Relalionships of a Morphologically I ni(|ue 

 Population oT (lie (ienus Ihimeces (Scincidae: Sqiiamala) 

 from lotorishima Island, Ryukyu Archipelago, as Revealed 



by Allozyme Dala 



.lUNKO MOTOKAWA,'' Masanao TOYAMA,- and Tsutomi IIIKIOA' 



^ I)c/>i/r[niciil (>l /oology. ( iniihuiic School cj Science, k volo l iii\cr\i!v, Scikvo. 



Kvolo 606-8502, JAPAN 

 " / /i'-.!orio'^n//iliUi// /iiMUinc. Okiimwci Pref'ccliirdl A rchivcs. Ariikiiwci 148-3, 

 //uchani. Okiiuiwu W/ 1105, J \I'A\ 



AI)slriU"l: Tlu' F{yiik>ii five-liiu'd skink, i'iittn'ce\ tnariiinaiiis. is an I'lidi'inic 

 species of (he central and northern K\iik>ns, and is composed of t\No 

 morpholojjieallN defined snhspeeies, /•'. ///. imii'^iiuiiii\ Ironi llie ()kin;i\\a 

 (•roup, and / . m. (isliiincnsis from the \mami and lokara droups. \ 

 po|)nlalion of llie L;enns I'lirtieces , recenth loiind on lotorishima Ishmil (an 

 uninhabited isKi located north of the main island chain of the l{\iik\iisi. 

 resembks /. //;. ()\/iitnc/ni\ in ha\in<; a relati\el> short median \\iiite line on 

 the tail, bnt is distiiut from an\ population of / . inaruiihUiis in lia\m'^ more 

 midbod> scale rows. I o assess the taxonomic status ol ilu' lotorishima 

 population from a historical \ie"point, we examined its ijeMeiK i i laiiouships 

 Willi /. iiuiri;intiliis populations. I he decree ol uinelii ditlerenli.iliou 

 hcIvNceii llie lotorishima population and a popiilaiion ol /. //(. ns/ii/iunsis 

 from I okuiiosliiuia, norlluiM \mami ishimN. \vav laiiU low il) ll.04.'i. 

 ( luster anahsis ol miutie data also indicated lliat llie lotorishima po|inl.iiioii 

 constitutes oiu' ol ihe t\\o major clusters wiiliin / . iihii iiiihilii'' loueiliii uiili 

 four / . ni. i)\lutncn\i\ popnlalioiis hdiii liu- nniilniii \m.iiiii .iiul voniluiii 

 lokaia Islands. I liiis. il is likch Ihiil llir iiniiilni ol inidhiMlx m .ili nnvs in 

 tllr lolni isliiMia popiiLilioii li;is iiuiclscd i.ijiuliv .illii ll^ iiI.iIimIn iriiilt 

 isolalioii. I a \ o no iim all \ . Ilii- I ol orislu ui a |io|miI.iI mn sccmv lo hr iiiosi 

 appidprialel\ asMMiud lo /. in. i)\ltiincn\i\ . 



Key words: i.iiincus nun i;inaiii.\. Kcplilia; .Mlo/vmc: K>ii>risiui;»a Isiaiul. 

 Ryukyu Archipelago 



• Corresponding auiho I ki si - ^^t- 

 •10'' 1; l ax: +81-75-753-41 14 



I mail aililrcss: jun((i:/.ou./ool.kyolo-u.ac.jp 

 (J. Molokawa) 



INIKODUCTION 



/ i ( \ rnarginatiis (Hallowcll. 1861) is 

 a modcralc-si/cd scincinc li/ard ciulcmic 

 lo I he Ryukyu Archiinrlago. The range of 

 ihis species incUides mosi islands of the 

 Okinavva and Antanii Ciroups. and 



