Mimetus subulatus, Liu & Xu & Hormiga & Yin, 2021

Liu, Jinxin, Xu, Xiang, Hormiga, Gustavo & Yin, Haiqiang, 2021, New species of the pirate spider genus Mimetus Hentz, 1832 from China with a cladistic hypothesis on their phylogenetic placement (Araneae, Mimetidae), Zootaxa 5020 (1), pp. 1-30 : 5-9

Mimetus subulatus new species

http://zoobank.org/ 18E9D83B-2FD4-4D79-8C93-8DE891B92236

Figs 3A, B , 4–8

Type material. Holotype: ♂ (Mime-0121- HNU): China, Guangdong Province: Shaoguan City, Ruyuan County, Nanling National Forest Park , Rufeng Ropeway Station , forest, 24°57.97'N, 113°02.84'E, 1453m, 26.VII.2016, Haiqiang Yin, Tieyang Zhou, Guchun Zhou, Chaomin Li, Ailan He, Wang Liu, Jinxin Liu, Zhuo’er Chen and Chen Zeng leg. Paratypes: 1♂ 1♀ (Mime-0113- HNU, Mime-0123- HNU): almost same data as holotype except the slightly different collecting spot and collecting time, Nanling National Forest Park, Waterfall , 24°53.60'N, 113°02.34'E, 940m, 27.VII.2016 ; 2♀ (Mime-0114- HNU, Mime-0115- HNU): almost same data as holotype except the slightly different collecting spot and collecting time, Nanling National Forest Park, Shifeiling , 24°53.77'N, 113°02.34'E, 1570m, 28.VII.2016 ; 1♀ (Mime-0099- HNU): almost same data as holotype except the slightly dif- ferent collecting spot and collecting time, Nanling National Forest Park, Baimakeng ; 24°52.41'N, 113°01.53'E, 1190m, 29.VII.2016 ; 1♂ (Mime-0103- HNU): China, Hunan Province: Chenzhou City, Mangshan Nature Reserves, Zeziping , forest, 24°57.34'N, 112°57.67'E, 502m, 22.VIII.2014, Haiqiang Yin, Xiang Xu, Cheng Wang, Bing Zhou, Jiahui Gan, Yuhui Gong, Hao Fang and Junxiong Fang leg ; 1♂ 1♀ (Mime-0035- HNU, Mime-0036- HNU): China, Guangdong Province: Shaoguan City, Danxiashan Mountain National Geological Park, Xianglonghu , 25°1.51'N, 113°44.28'E, 180m, 8.VIII.2019, Ailan He, Qu Cai, Huijuan Sheng, Shixiong Zhu, Jiabin Liu leg ; 2♀ (Mime-0037- HNU, Mime-0038- HNU): China, Guangdong Province: Shaoguan City, Danxiashan Mountain National Geological Park, Bamboo forest , 25°8.5'N, 113°44.35'E, 201m, 6.VIII.2019, Ailan He, Qu Cai, Huijuan Sheng, Shixiong Zhu, Jiabin Liu leg.

Etymology. The specific name is derived from the Latin word for awl (subula) in reference to the awl-shaped subtegular apophysis.

Diagnosis. The male of Mimetus subulatus n. sp. differs from those of all other Mimetus species by the awlshaped subtegular apophysis and the short tibia which is almost equal to, or is at least not much longer than, the cymbium ( Figs 4G, H , 7C, D ). The female of M. subulatus n. sp. is similar to that of M. niveosignatus n. sp. but differs by the middle chambers of the spermathecae being longer than the lateral ones (to the contrary in M. niveosignatus ) (compare Figs 6C, D , 8B and Figs 17E , 19B ).

Description. Male (Holotype). Habitus as in Fig. 4A . Total length 2.14. Carapace 0.99 long, 0.86 wide. Opisthosoma 1.22 long, 1.25 wide. Sternum 0.55 long and 0.47 wide. Labium wider than long. Clypeus height 0.18. Eye sizes and interdistances: AME 0.10, ALE 0.08, PME 0.09, PLE 0.08, AME–AME 0.03, ALE–AME 0.04, PME–PME 0.04, PME–PLE 0.05. MOA 0.09 long, anterior width 0.04, posterior width 0.06. Leg measurements see Table 1.

Cephalothorax: Carapace ( Fig. 4A, C ) yellow, long oval, longer than wide, widest at coxae II and III; with a dark brown pattern between ocular area and fovea, slightly constricted at the position of half length; fovea inconspicuous. Sternum yellowish. Labium reddish brown. Chelicerae ( Fig. 8C, D ) reddish brown, with six promarginal peg teeth and two retromarginal teeth. Endites deep brown, longer than wide. Leg color similar to carapace, with irregular dark stripes ( Fig. 4I, J ).

Abdomen ( Fig. 4A, D ): deep brown, approximately tetrahedral, as long as wide, widest in the medial region; dorsum covered irregularly with many whitish dots.

Pedipalp ( Figs 4E–H , 7A–D ): tibia approximately as long as cymbium, slightly swollen distally, with a few long macrosetae. Cymbium with many especially long setae dorsally, with apex strongly extended to form a bowlshaped outgrowth. Paracymbium broad, triangular. Subtegular apophysis long and sharp, awl-shaped. Sclerotized area of conductor complex, whorled and rolls up to form several apophyses including one protecting the apical end of embolus. Tip of membranous area of conductor with pilose cuticular projections ( Fig. 3B ). Embolus tubular, strongly curved around the membranous area of conductor and forming ca. 3/4 circle, proximally swollen.

Female (Paratype, Mime-0123-HNU). Similar to male in general features; more prominent blackish spots than male ( Fig. 5A ). Total length 2.28; Prosoma 0.95 long, 0.79 wide; Abdomen 1.27 long, 1.34 wide. Sternum 0.50 long, 0.48 wide. Labium wider than long. Clypeus 0.15 high. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.07, PLE 0.07, AME–AME 0.03, ALE–AME 0.05, PME–PME 0.05, PME–PLE 0.05. MOA anterior width 0.03, posterior width 0.05, length 0.07. Leg measurements see Table 2.

Cephalothorax: Carapace ( Fig. 5A–D ) yellow, with a broad reddish-brown pattern medially. Sternum yellow. Labium reddish brown. Chelicerae ( Fig. 8E, F ) reddish brown, with six promarginal peg teeth (the basal one broken and lost) and two retromarginal teeth.

Abdomen ( Fig. 5A–C ): Brown, interspersed by numerous dark-gray and white spots dorsally and ground color grey.

Epigynum ( Figs 6 A–F , 8A, B ): atrium reduced, divided into two parts, with arc-shaped anterior margins. Basal plate sclerotized, twice as wide as long, slightly divided into two swollen parts ( Figs 6A , 8A ), with the posterior margin straight. Copulatory openings and copulatory ducts inconspicuous. Medial spermathecal chambers long oval, close to each other, lateral chambers spherical. Fertilization ducts lightly sclerotized, originating at the junction of the medial and the lateral spermathecal chambers. ( Fig. 6E, F ).

Distribution. China (Guangdong, Hunan) ( Fig. 23 ).

Figures

FIGURE 3. SEMs of male palp (holotype), frontolateral view A, B, Mimetus subulatus n. sp.; C, D, Mimetus uncatus n. sp. Abbreviations: STA = subtegular apophysis, PCP = pilose cuticular projections. Scale bars: A, 0.1mm; B–D, 0.02mm

FIGURE 4. Mimetus subulatus n. sp., male holotype. A, habitus, dorsal view; B, cephalothorax, frontal view; C, ditto, lateral view; D, abdomen, lateral view; E, left palp, prolateral view; F, ditto, ventral view; G, ditto, frontolateral view; H, ditto, retrolateral view; I, left legs I–IV, retrolateral view; J, femur of left leg I, retrolateral view. Scale bars: A, 0.5mm; B, C, 0.2mm; D, 0.4mm; E–H, J, 0.1mm; I, 0.7mm.

FIGURE 5. Mimetus subulatus n. sp., female paratype. A, habitus, dorsal view; B, ditto, ventral view; C, ditto, lateral view; D, cephalothorax, frontal view; E, left legs I and II, retrolateral view; F, left legs III and IV, retrolateral view; G, femur of left leg I, retrolateral view. Scale bars: A–C, 0.5mm; D, 0.2mm; E, F, 0.8mm; G, 0.1mm.

FIGURE 6. Mimetus subulatus n. sp., epigynum of paratype. A, B, epigynum, ventral view; C, D, dorsal view; E, F, frontal view. Abbreviations: FD = fertilization ducts. Scale bars: A–F, 0.05mm.

FIGURE 7. Mimetus subulatus n. sp., male holotype. A, left palp, prolateral view; B, ditto, ventral view; C, ditto, frontolateral view; D, ditto, retrolateral view.Abbreviations: CA = cymbial apex, Cy = cymbium, E = embolus, MCO = membranous conductor, PC = paracymbium, PCP = pilose cuticular projections, SCO = sclerotized conductor, ST = subtegulum, STA = subtegular apophysis, T = tegulum. Scale bars: A–D, 0.1mm.

FIGURE 8. Mimetus subulatus n. sp., female paratype and chelicera of male holotype. A, epigynum, ventral view; B, ditto, dorsal view; C, chelicera of male holotype, prolateral view; D, ditto, retrolateral view; E, chelicera of female paratype, prolateral view; F, ditto, retrolateral view. Abbreviations:A = atrium, BP = basal plate, FD = fertilization ducts, Sp = spermathecae. Scale bars: A–F, 0.05mm.

FIGURE 17. Mimetus niveosignatus n. sp., female paratype. A, habitus, dorsal view; B, ditto, lateral view; C, cephalothorax, frontal view; D, epigynum, ventral view; E, ditto, dorsal view; F, left legs I and II, retrolateral view; G, left legs III and IV, retrolateral view; H, femur of left leg I, retrolateral view. Scale bars: A, B, F, G, 0.5mm; C, 0.2mm; D, E, 0.05mm; H, 0.1mm.

FIGURE 19. Mimetus niveosignatus n. sp., female paratype and chelicera of male holotype. A, epigynum, ventral view; B, ditto, dorsal view; C, right chelicera of male holotype, retrolateral view; D, ditto, prolateral view; E, chelicera of female paratype, prolateral view; F, ditto, retrolateral view. Abbreviations: A = atrium, BP = basal plate, Sp = spermathecae. Scale bars: A–F, 0.05mm.

FIGURE 23. Localities of Mimetus spp. found in the area covered in the map.