Mysmenopsis salazarae, Dupérré & Tapia, 2020

Dupérré, Nadine & Tapia, Elicio, 2020, Megadiverse Ecuador: a review of Mysmenopsis (Araneae, Mysmenidae) of Ecuador, with the description of twenty-one new kleptoparasitic spider species, Zootaxa 4761 (1), pp. 1-81 : 53-56

Mysmenopsis salazarae new species

Figs 154–163 , 200–215 , map 3 (blue diamond)

Material examined. Male holotype, female allotype and three female paratypes from Ecuador, Pastaza Province, Otoyacu Reserve (-01.37128 -77.85436) 919m, 25 July 2014, E.E. Tapia, in Linothele sp. web ( QCAZ). Paratypes: Ecuador: Pastaza Province: Otoyacu Reserve (-01.37128 -77.85436) 918m, 25 July 2014, 5♂ 6♀, E.E. Tapia, in Linothele sp. web ( ZMH-A0001885 ) ; 12 July 2014, 1♀ 1juv., E.E. Tapia, in Linothele sp. web ( QCAZ) .

Additional material examined. Ecuador: Orellana Province: Limoncocha Lake (-00.40979 -76.632218) 200m, 29 Apr. 2016, 3♂ 2♀, E.E. Tapia, N. Dupérré. A.A. Tapia ( DTC, ZMH-A0001546 , ZMH-A0001575 , QCAZ) . Ecuador: Pastaza Province Carretera Puyo-Macas, Puente Rio Pastaza Pastaza (-01.922673 -77.813055) 785m, 19 May 2019, 5♂ 4♀ 1juv., in Linothele web, E. E. Tapia ( DTC, QCAZ) . Sucumbios Province: Rio Aguarico (-00.06647 -76.90675) 350m, 2♀, 29 Apr. 2016, E.E. Tapia, N. Dupérré, A.A. Tapia ( DTC, ZMH-A0001550 ) ; Lumbaqui , via las antenas (00.036226 -77.308526) 826m, 24 Feb. 2018, 2♂ en sotobosque de bosque primario, unknown web, E.E. Tapia ( QCAZ) ; Lumbaqui , via las antenas (00.036226 -77.308526) 826m, 22 May 2019, 5♂ 7♀ 5juv., in Linothele and Lycosidae webs, E.E. Tapia ( DTC) .

Etymology. The specific name is in honor of Fernanda María Salazar, collection manager at Museum of Invertebrates, Pontificia Universidad Católica del Ecuador, Quito, for her contribution to the study of the Ecuadorian insect fauna.

Diagnosis. Male are distinguished from all species by the presence of one tibial clasping spur accompanied by four large macrosetae ( Fig. 157 ) and a large, forked-shaped embolic apophysis ( Figs 159, 161 ). Females are distinguished from all species by the combination of the following characters: the presence of three macrosetae prolater- ally on femur I ( Fig. 158 , arrow), the sinuous posterior margin of epigynum and large S-shaped fertilization ducts ( Figs 162, 163 ).

Description. Male (holotype): Total length: 1.72; carapace length: 0.85; carapace width: 0.8; abdomen length: 0.87. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 154 ). Sternum dark brown suffused with black; covered with long setae. Clypeus dark brown suffused with black; high (4x AME) ( Fig. 200 ). Chelicerae light brown suffused with black; promargin with three teeth; retromargin not observed. Eyes: eight, rounded, all approximately equal size; ocular region on protuberance; AME separated by their radius, AME-LE touching; ALE-PLE contiguous, LE-PME separated by their diameter; PME separated by their radius. Abdomen: rounded, dark grey with six white spots in circular pattern anteriorly ( Fig. 154 ) followed by transversal line of six white spots and two pairs of white spots ( Fig. 155 ). Spinnerets: ALS with one major ampullate gland spigot, 11 piriform spigots, a nubbin and a tartipore; PMS with one minor ampullate gland spigot, two aciniform gland spigots; PLS with one flagelliform, six aciniform gland spigots ( Figs 202, 204, 206 ). Legs: femur I orange-brown; femora II-III light orange-brown with faint darker bands basally and apically; femur IV light orange-brown; tibiae and metatarsi I-IV light orange-brown with dark band apically, tarsi light orange; femur and tibia I enlarged, metatarsus I straight ( Fig. 157 ). Legs spination: patellae I–IV with one macroseta; tibia I with one prolateral clasping spur and four macrosetae ( Fig. 210 ); metatarsus I with row of six macrosetae prolatero-ventrally and one clasping spur apically ( Figs 157 , 212 ); tibiae I–IV with one macroseta dorso-proximally; tibia II with three macrosetae ventrally. Total length leg I: 3.04 (0.87/0.29/0.79/0.5/0.59). Tarsal organ capsulate ( Fig. 208 ). Genitalia: palpal tibia globular; retrolateral ledge with wide projection with 12 cusps fused with ventral ledge bearing two cusps; two retrolateral trichobothria ( Fig. 159 ). Cymbium apically pointed, not excavated; paracymbium small and triangular ( Fig. 160 ). Tegulum squared ( Fig. 159 ). Embolus spine-like, with large, curved base and forked basal embolic apophysis ( Figs 159, 161 , 214 ).

Female (allotype): Total length: 2.16; carapace length: 1.01; carapace width: 0.84; abdomen length: 1.15. Cephalothorax ( Fig. 154 ) and sternum: as in male. Chelicerae promargin with three teeth and retromargin with one tooth ( Fig. 209 ). Clypeus dark brown; low (3x AME) ( Fig. 201 ). Eyes: eight, rounded, all approximately of equal size; ocular region on lower protuberance; AME separated by their radius, AME-LE touching; ALE-PLE contiguous, LE- PME separated by their radius; PME separated by their radius. Abdomen: as in male ( Figs 154, 156 ). Spinnerets: ALS with one major ampullate gland spigot, 11 piriform spigots, a nubbin and a tartipore; PMS with one minor ampullate gland spigot, two aciniform and one cylindrical gland spigots; PLS with two cylindrical, one flagelliform and six aciniform gland spigots ( Figs 203, 205, 207 ). Legs: coloration darker than male; femur I enlarged with large sub-medial tubercle ( Fig. 158 ). Legs spination: patellae I–IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; femur I with two macrosetae prolaterally ( Fig. 158 , arrow); tibiae I-II with five to six macrosetae ventrally. Total length leg I: 3.36 (1.02/0.34/0.8/0.67/0.53). Genitalia: epigynum rather flat, anterior epigynal margin not well delimited, posterior epigynal margin sinuous ( Fig. 162 ). Dorsal epigynal plate high, with curved anterior margin ( Figs 163 , 211 ). Internal genitalia (paratype): spermathecae rounded with and elongation laterally ( Figs 163 , 213, 215 ); copulatory openings C-shaped; copulatory ducts short ( Figs 211, 213 ); fertilization ducts large, S-shaped, semi-transparent ( Figs 163 , 211, 215 ).

Distribution. Ecuador: Orellana, Pastaza and Sucumbios Provinces.

Natural history. Specimens were collected in the Amazonian ecoregion, in several Linothele sp. and Lycosidae webs between 200– 919m. The species is widely distributed from the evergreen foothill forest on the Northeastern Andes (BsPn03) ( Guevara, Mogollón, Cerón & Josse, 2013) to the evergreen lowland forest of the Amazonian region from Rio Aguarico (BsTa02) ( Guevara, Pitman, Mogollón, Cerón & Palacios, 2013) to Rio Paztaza (BsTa03) ( Guevara, Pitman, Mogollón, Cerón & Loarte, 2013). M. salazarae n. sp. lives in sympatry with M. bartolozzi n. sp. in Pastaza and Sucumbios province, and in the Sucumbios provinces with M. atahualpa , M. penai and M shushufindi n. sp.

Figures

FIGURES 154–158. Mysmenopsis salazarae n. sp., 154, Male and female habitus, dorsal view. 155, Male abdomen, posterior view. 156, Female abdomen, posterior view. 157, Male leg I, prolateral view. 158, Female leg I, prolateral view (arrow points to macroseate). Scale bar: 154–156: 0.5mm; 157, 158: 0.1mm.

FIGURES 159–163. Mysmenopsis salazarae n. sp., 159, Male palp, retrolateral view. 160, Male palp, prolateral view. 161, Embolus and apophysis retrolateral view. 162, Epigynum, ventral view. 163, Internal genitalia, dorsal view.

FIGURES 200–207. Mysmenopsis salazarae n. sp., 200, Male carapace, lateral view. 201, Female carapace, lateral view. 202, Male ALS spinning field. 203, Female ALS spinning field. 204, Male PMS spinning field. 205, Female PMS spinning field. 206, Male PLS spinning field. 207, Female PLS spinning field.

FIGURES 208–215. Mysmenopsis salazarae n. sp., 208, Male tarsal organ leg I, dorsal view. 209, Female mouthparts ventral view. 210, Male femur I, prolateral view. 211, Female epigynum, dorsal view. 212, Male right metatarsus I, prolateral view. 213, Female internal genitalia, posterior view. 214. Male palp, retrolateral view. 215, Female internal genitalia ventral view.