Otacilia obesa, Fu & Zhang & Zhang, 2016

Fu, Lina, Zhang, Zhisheng & Zhang, Feng, 2016, Description Of Two New Otacilia Species From Anhui, China (Araneae, Phrurolithidae), Acta Zoologica Academiae Scientiarum Hungaricae 62 (2), pp. 133-142 : 134-138

Otacilia obesa sp. n.

(Figs 1–13)

Typematerial. Holotypemale, China, AnhuiProvince , HuangshanCity , Xiuning County, QiyunMountain (29°48.269 ′ N, 118°02.298 ′ E), 22 October 2013, LuyuWangleg. Paratypes: 18 malesand 18 females, samedataasholotype; 7 malesand 2 females, Qiyun Mountain, Dongtianfudi (29°48.427 ′ N, 118°02.457 ′ E), 22 October 2013, LuyuWangleg.; 6 malesand 5 females, QimenCounty, Gu’ niujiang (30°01.080 ′ N, 117°31.780 ′ E), 23 October 2013, LuyuWangleg .

Etymology. ThespeciesnamecomesfromtheLatinword‘ obesus ’, meaning‘ obese’,

referringtotheroundbulbofthemalepalp.

Diagnosis. Thenewspeciesischaracterizedbythefollowingcombina- tionofcharacters: darkbodycolorandmarkings; roundbulb, hook-shaped embolus, longandsharptegularapophysis; basallywideandapicallypoint- edRTA; presenceofasmalldepressionretrolaterallyonfemoralapophysis inthemale; rectangularandlongepigynalmedianplate; smallcopulatory openings; andoval, anteriorlytransparentbursaeinthefemale.

Description – Male (Fig. 1). Totallength 2.91–3.09 (n = 8). Holotypebody 3.03 long; carapace 1.49 long, 1.26 wide; abdomen 1.44 long, 0.86 wide. Carapaceoval, narrowan- teriorly; yellowish, withbroadmediangreystripe; thoracicparthigherthanthecephalic part; fovealongitudinal, distinct. Indorsalview, AERslightlyrecurved, PERslightlywider thanAERandalmoststraight. Diameterofeyes: AME 0.06, ALE 0.08, PME 0.07, PLE 0.08. Interdistancesofeyes: AME–AME 0.05, AME–ALE 0.02, PME–PME 0.09, PME–PLE 0.06. MOA 0.23 long, front 0.18 wide, back 0.25 wide. Clypeus 0.10 high. Cheliceraewithoneor twostronganteriorbristles; cheliceralpromarginwiththreewell-separatedteethandretromarginwithfiveclustereddenticles. Labiumslightlywiderthanlong. Legslightbrown. Leg measurements: leg I 5.41 (1.48, 0.22, 1.76, 1.31, 0.64), II 4.48 (1.21, 0.39, 1.23, 1.04, 0.61), III 3.86 (1.05, 0.44, 0.86, 1.05, 0.46), IV 5.50 (1.70, 0.31, 1.15, 1.52, 0.82). Leg formula: 4123. FemoraI–IVbasallywithonedorsalspine. FemoraIwithfourprolateralspinesandfemo- raIIwithtwoprolateralspines; tibiaeIwitheightproventralspinesandnineretroventral spines, tibiaeIIwitheightproventralspinesandsevenretroventralspines; metatarsiIwith fourpairsofventralspines, metatarsiIIwithfourproventralspinesandthreeretroventral spines. Abdomengrey; anteriorpartwithaU-shapeddorsalscutum, almostoccupying 1/2 lengthand 2/3 widthofthewholeabdomen; posteriorpartdarkbrown, withseveral chevron- likestripesdorsally.

Palp (Figs 3–6,9–11). Palpalfemurwithansubdistalapophysisandaretrolateralcon- cavity; tibiawithalarge, posteriorlyextendingRTAconsistingofabroadbaseandafingershapedtip; distalcymbiumventrallywitharowofsetae; tegulumconvex, TAlongandthin, extendingbeyondmarginoftegulum; embolushook-shaped, slightlysharpapically.

Female (Fig. 2). Totallength 3.02–3.49 (n = 7). OneparatypefromQiyunshanMoun- tain: body 3.21 long; carapace 1.41 long, 1.30 wide; abdomen 1.62 long, 1.15 wide. Carapace lightbrown, oval, abruptlynarrowanteriorly. Diameterofeyes: AME 0.06, ALE 0.08, PME 0.07, PLE 0.08. Eye interdistances: AME–AME 0.06, AME–ALE 0.03, PME–PME 0.11, PME– PLE 0.06. MOA 0.24 long, front 0.18 wide, back 0.26 wide. Clypeus 0.08 high. Chelicerae lightbrown. Labiumandgnathocoxaebrown. Legsandpalpsyellowishbrown. Legmeas- urements: I 5.52 (1.57, 0.32, 1.76, 1.41, 0.46), II 4.43 (1.32, 0.37, 1.22, 0.96, 0.56), III 3.82 (1.05, 0.36, 0.86, 0.98, 0.57), IV 5.89 (1.63, 0.47, 1.44, 1.59, 0.76). Leg formula: 4123. Femora I–IV basallywithonedorsalspine. FemoraIwithfive (left) andthree (right) prolateralspines, andfemoraIIwiththreeprolateralspines; tibiaeIwithninepairsofventralspines, tibiae IIwitheightpairsofventralspines; metatarsiIandIIwiththesamespinationasmale. Abdomenwithoutdorsalscutum. Othercharactersasinmale.

Epigyne (Figs 7–8,12–13): medianplaterectangular, longerthanwide, withparallel lateralmargin. Copulatoryopeningssmall, oval, situatedmediallyonepigyne (Figs 7, 12). Vulvaanteriorlywithapairoflargetransparentegg- shapedbursae, posteriorlywithapair ofthick, closelysituatedspermathecae; copulatoryductsrelativelylong.

Distribution. China (Anhui).

Remarks. ThenewspeciesresemblesseveralChinese Otacilia species , but itdiffersfrom O. komurai ( Yaginuma, 1952) by: longandsharptegularapophysis (shorterinthelatter), andparallelbursae (divergingrelativelyinthe latter). Itcanbeseparatedfrom O. foveata ( Song, 1990) and O. liupan Huet Zhang, 2011 by: parallellateralmarginofepigynalmedianplate (notparallel in O. foveata and O. liupan ), andlargebursae (smallerbursaeinthelatter). It alsocanbedistinguishedfrom O. jianfengling Fu, ZhangetZhu, 2010 and O. fujiana Fu, JinetZhang, 2014 by: narrowmedianplate (broaderinthelatter), andRTAwithawidebaseandpointedtip (acurvetipinthelatter).

Thisnewspeciescanbeeasilydistinguishedfromother Otacilia species , suchas, itdiffersfrom O. armatissima Thorell, 1897 (typespeciesofthe Otacilia

Figs 9–13. Otacilia obesa sp. n.: 9–11: left male palp: 9 = dorsal view, 10 = ventral view, 11 = retrolateralview; 12 = epigyne, ventralview; 13 = vulva, dorsalview. Scalebars: 0.25 mm

(9–11); 0.50 mm (12–13).

fromMyanmar) bylongandcurvecopulatoryducts (shorterinthelatter), andnarrowparallellateralmarginofmedianplate (broaderinthelatter). Itis separatedfrom O. christae JägeretWunderlich, 2012 and O. vangvieng Jägeret Wunderlich, 2012 (occursinLaos) byhook-shapedembolus (nothook-shaped

Figs 1–8. Otaciliaobesa sp. n.: 1= malehabitus, dorsalview; 2 = femalehabitus, dorsalview; 3–6 = leftmalepalp: 3 = dorsalview, 4 = prolateralview, 5 = ventralview, 6 = retrolateralview;

7 = epigyne, ventralview; 8 = vulva, dorsalview. Scalebars: 1.00 mm (1–2); 0.20 mm (3–8).

inthelatter), andalongRTA (shorterinthelatter); itisdistinguishedfrom O. bifurcata DankittipakuletSingtripop, 2014 and O. truncata Dankittipakul etSingtripop, 2014 (occursinThailand) bylongandthickembolus (shorter andsharperinthelatter), singleRTA (twodifferentRTAinthelatter), and presenceofparallelepigynalmedianplate (absentepigynalmedianplatein thelatter).