Chthonos kuyllur, Dupérré & Tapia, 2017

Dupérré, Nadine & Tapia, Elicio, 2017, On some minuscule spiders (Araneae: Theridiosomatidae, Symphytognathidae) from the Chocó region of Ecuador with the description of ten new species, Zootaxa 4341 (3), pp. 375-399 : 378

Chthonos kuyllur new species

FIgS 1–5, 39

Type material. MAlE HOlOtypE frOM EcUADOr, COtOpAxI PrOvINcE, PArrOqUIA SAN FrANcIScO DE LAS PAMpAS, CASA CéSAr TApIA (-00.42415 -78.95719), 1,426M, 08.xII.2013, HAND cOllEctED C . TApIA, C. CAISAgUANO (QCAZ). MAlE pArAtypE frOM COtOpAxI PrOvINcE, OTONGA BIOlOgIcAl RESErvE, 24–30.v.2014, 1♂, HAND cOllEctED, 2♂, bEAtINg, E. TApIA, C. TApIA, N. DUpérré ( QCAZ) .

Etymology. THE SpEcIfIc NAME IS A NOUN IN AppOSItION tAkEN frOM tHE KIcHWA lANgUAgE WOrD fOr “StAr”.

Diagnosis. MAlES ArE DIStINgUISHED frOM All SpEcIES by tHEIr AbDOMEN bEArINg ONE pAIr Of lAtErAl tUbErclES AND tHE AbSENcE Of MEDIAN tUbErclES; frOM C. peruana AND C. pectorosa by tHE lAtErAl tUbErclES bEINg lOWEr AND jOINED ( FIg. 1).

Description. Male (holotype): TOtAl lENgtH: 1.4; cArApAcE lENgtH: 0.64; cArApAcE WIDtH: 0.6; AbDOMEN lENgtH: 0.8; AbDOMEN WIDtH: 1.2; AbDOMEN HEIgHt: 1.0. CEpHAlOtHOrAx: CArApAcE rEDDISH-brOWN SlIgHtly SUffUSED WItH blAck, rEtIcUlAtE ( FIgS 1, 39 ); cEpHAlIc rEgION NOt HIgHEr tHAN tHOrAcIc rEgION. ClypEUS lOW (1x AME). CHElIcErAE rEDDISH-brOWN; prOMArgIN WItH fOUr lArgE tEEtH, rEtrOMArgIN NOt ObSErvED ( FIg. 5 ). StErNUM OrANgE-brOWN WItH MArgIN DArkEr, pApIllAtE, cONvEx, trUNcAtED, lAtErAl MArgINS DEEply INcISED ( FIg. 4 ). ENDItES, lAbIUM rEDDISH-brOWN. EyES: EIgHt; AME rOUNDED, LE OvAl AND PME SlIgHtly trIANgUlAr; AME AND PME SUbEqUAl, LE OvAl, SMAllESt; AME SEpArAtED, AME-ALE tOUcHINg, LE cONtIgUOUS, PLE-PME tOUcHINg, PME SEpArAtED by tHEIr rADIUS; ONly AME SUrrOUNDED by blAck pIgMENtAtION ( FIgS 1, 39 ). AbDOMEN: DOrSAlly WItH lArgE SclErOtIZED ScUtUM, rEDDISHbrOWN, WItH DArk brOWN pAttErN; DOrSO-ApIcAlly WHItHIS, WrINklED; cOMplEtEly cOvErED WItH OrANgE pApIllAtE SEtAE bASES ( FIgS 1, 39 ); vENtrAlly WHItISH, WrINklED WItH OrANgE pApIllAtE SEtAE bASE; ScUtUM AND SpINNErEtS ScUtUM, DArk rEDDISH-brOWN; WIDEr AbOvE tHAN lONg Or HIgH, tApErINg bElOW; DOrSUM WItH ONE pAIr Of lAtErAl jOINED tUbErclES; SUrfAcE pApIllAtED WItH SMAll pAlE SEtAE. LEgS: FEMUr lIgHt brOWN WItH bASAl AND MEDIAN DArk bAND, pAtEllA lIgHt brOWN, tIbIAE DArk OrANgE-brOWN WItH bASAl AND SEMI-ApIcAl DArk bAND, MEtAtArSI lIgHt brOWN WItH DArk ApIcAl bAND, AND tArSI lIgHt brOWN; pAtEllAE AND tIbIAE SINUAtE; tIbIAE, MEtAtArSI, AND tArSI Of lEgS I AND II WItH DIStINctIvE lAtErAl SINglE rOWS Of lONg, StrONg SEtAE ( FIgS 1, 39 ). LEg tOtAl lENgtH 2.0/1.7/1.1/1.4; lEg fOrMUlA 1243. PAlp: CyMbIUM DIStAlly pOINtED; pArAcyMbIUM NArrOW DIStAlly ( FIgS 2, 3 ); cONDUctOr cOvErINg EMbOlUS, WItH tHIck, rEcUrvED, vENtrAl ApOpHySIS ( FIg. 2 ); EMbOlUS ENtIrE, ObSErvED tHrOUgH tHE cONDUctOr ( FIg. 2 ); MEDIAN ApOpHySIS flAt, plAtE-lIkE, WItH SMAll DIrEctED prONg ApIcAlly ( FIg. 2 ).

Female: UNkNOWN.

Variation. THE MAlE pArAtypES fOUND At A DIffErENt lOcAlIty (OTONGA BIOlOgIcAl RESErvE) ArE SlIgHtly DIffErENt tHAN tHE HOlOtypE MAlE. THE MAlE pAlp SHOWS SOME rEDUctION IN SIZE AND lESS SclErOtIZAtION Of tHE cONDUctOr vENtrAl ApOpHySIS, A SMAllEr MEDIAN ApOpHySIS, AND SlIgHtly HIgHEr tUbErclES ON tHE AbDOMEN.

Distribution. EcUADOr: COtOpAxI PrOvINcE.

Note. THE MAlE EMbOlIc cONfIgUrAtION rESEMblES ONE SpEcIES prESENtED IN CODDINgtON 1986, AS Chthonos Sp. frOM MExIcO ( CODDINgtON 1986, fIgS 29–32).

Figures

FIGURES 39 – 42. Habitus dorsal view. 39. Male, Chthonos kuyllur n. sp. 40. Male, Naatlo mayzana n. sp. 41. Male, Ogulnius laranka n. sp. 42. Female, Ogulnius puku n. sp.

FIGURES 2 – 5. Chthonos kuyllur n. sp. 2. Palp, prolateral view. 3. Palp, retrolateral view. 4. Sternum, ventral view. 5. Chelicerae, anterior view.