Pholcus sakaew Yao & Li

Zhu, Keli, Yao, Zhiyuan, Bai, Xiujuan & Li, Shuqiang, 2018, Five new species of the spider genus Pholcus Walckenaer, 1805 (Araneae: Pholcidae) from China and Thailand, Zootaxa 4377 (2), pp. 235-253: 236-239

publication ID

https://doi.org/10.11646/zootaxa.4377.2.5

publication LSID

lsid:zoobank.org:pub:92AB898C-1B08-44C4-98B6-B0C31E8F9F7D

persistent identifier

http://treatment.plazi.org/id/FC23EE52-FFEF-947D-FF09-F88D59459CEA

treatment provided by

Plazi

scientific name

Pholcus sakaew Yao & Li
status

sp. nov.

Pholcus sakaew Yao & Li  sp. nov.

FIGS 1–2View FIGURE 1View FIGURE 2

Type material. Holotype: MAlE, THAM PHET SAI KAEW CAVE (13°24.962'N, 102°19.589'E, ElEVATION 243 M), KlONG HAT SUBDISTRICT, Sakaew , Thailand, 9 NOVEMBER 2016, H. ZHAO, Y. LI AND Z. CHEN lEGGoogleMaps  . Paratype: 1 FEMAlE, SAME DATA AS HOlOTYPE  .

Etymology. THE SPECIFIC NAME REFERS TO THE TYPE lOCAlITY, AND IS A NOUN IN APPOSITION.

Diagnosis. THIS SPECIES CAN BE EASIlY DISTINGUISHED FROM All KNOWN CONGENERS IN THE P. bidentatus  SPECIES- GROUP BY THE PRESENCE OF A lONG, MEMBRANOUS PROlATERAl PROCESS DISTAllY ( ARROW 1 IN FIG. 1CView FIGURE 1) AND A lONG, SClEROTIZED PROlATERAl APOPHYSIS DISTAllY ( ARROW IN FIG. 1DView FIGURE 1) ON THE PROCURSUS AND BY THE lONG, MEDIAllY CURVED APPENDIX ( FIG. 2CView FIGURE 2).

Description. Male (holotype): TOTAl lENGTH 5.51 (5.64 WITH ClYPEUS), CARAPACE 0.94 lONG, 1.02 WIDE, OPISTHOSOMA 4.47 lONG, 1.44 WIDE. LEG I: – (11.92 + 0.73 + 12.50 + – + –), lEG II: 32.52 (9.29 + 0.69 + 8.44 + 12.50 + 1.60), lEG III: 24.88 (7.69 + 0.65 + 5.83 + 9.49 + 1.22), lEG IV: 30.79 (8.97 + 0.66 + 8.27 + 11.35 + 1.54); TIBIA I L/D: 71. DISTANCE PME-PME 0.81; DIAMETER PME 0.16; DISTANCE PME-ALE 0.06; DISTANCE AME-AME 0.05; DIAMETER AME 0.05. STERNUM WIDER THAN lONG (1.02/0.94). HABITUS AS IN FIGS 2E –FView FIGURE 2. CARAPACE GREY, WITH NARROW BROWN lINE MEDIAllY; OCUlAR AREA AND ClYPEUS GREY; STERNUM GERY, WITH BROWN MARKS. LEGS YEllOWISH, BUT WHITISH ON DISTAl PARTS OF FEMORA AND TIBIAE, WITHOUT DARKER RINGS. OPISTHOSOMA GREY, WITH BROWN MARKS POSTERIORlY. OCUlAR AREA ElEVATED; EACH EYE TRIAD ON TOP OF A lONG, lATERAllY DIRECTED EYE-STAlK. THORACIC FURROW ABSENT. CHElICERAE AS IN FIG. 2DView FIGURE 2, WITH A PAIR OF PROXIMO-lATERAl APOPHYSES, A PAIR OF DISTAl APOPHYSES, AND A PAIR OF FRONTAl APOPHYSES. PEDIPAlPS AS IN FIGS 1A –BView FIGURE 1; TROCHANTER WITH A lONG RETROlATERO-VENTRAl APOPHYSIS; FEMUR WITH A SMAll DORSAl APOPHYSIS PROXIMAllY ( ARROW IN FIG. 1BView FIGURE 1) AND AN INDISTINCT VENTRAl PROTUBERANCE; PROCURSUS SIMPlE PROXIMAllY BUT COMPlEX DISTAllY, WITH A lONG, MEMBRANOUS PROlATERAl PROCESS DISTAllY ( ARROW 1 IN FIG. 1CView FIGURE 1), A lONG, SClEROTIZED PROlATERAl APOPHYSIS DISTAllY ( ARROW IN FIG. 1DView FIGURE 1), AND A PROlATERO-DORSAl SPINE ( ARROW 2 IN FIG. 1CView FIGURE 1); UNCUS WITH A SCAlY EDGE; APPENDIX lONG AND CURVED; EMBOlUS WEAKlY SClEROTIZED, WITH SOME TRANSPARENT PROJECTIONS DISTAllY. RETROlATERAl TRICHOBOTHRIUM OF TIBIA I AT 4% PROXIMAllY; lEGS WITH SHORT VERTICAl SETAE ON TIBIAE, METATARSI AND TARSI, WITHOUT SPINES AND CURVED SETAE.

Female : SIMIlAR TO MAlE, HABITUS AS IN FIGS 2 G –HView FIGURE 2. TOTAl lENGTH 5.90 (6.22 WITH ClYPEUS)  , CARAPACE 1.41 lONG, 1.66 WIDE, OPISTHOSOMA 4.49 lONG, 2.19 WIDE; lEG I MISSING. DISTANCE PME-PME 0.30; DIAMETER PME 0.18; DISTANCE PME-ALE 0.03; DISTANCE AME-AME 0.04; DIAMETER AME 0.05. STERNUM WIDER THAN lONG (1.06/0.94). CARAPACE YEllOWISH, WITH NARROW BROWN STRIPE AND lARGE lIGHT BROWN MARKS MEDIAllY. OPISTHOSOMA YEllOWISH, WITHOUT SPOTS. OCUlAR AREA WITHOUT EYE-STAlKS. EPIGYNUM ( FIG. 2AView FIGURE 2) WITH A KNOB. VUlVA ( FIG. 2BView FIGURE 2) WITH A SClEROTIZED ANTERIOR ARCH AND TWO NEARlY EllIPTIC PORE PlATES.

Distribution. THAIlAND ( SAKAEW, TYPE lOCAlITY; FIG. 12View FIGURE12).

Natural history. THE SPECIES WAS FOUND IN THE APHOTIC ZONE INSIDE THE CAVE.

CAVE

DOI/NPS, Carlsbad Caverns National Park

BUT

Butler University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pholcus