A revision of the South American species of the ant-mimicking spider genus Myrmecotypus O. Pickard-Cambridge, 1894 (Araneae: Corinnidae: Castianeirinae) Silva-Junior, Cláudio J. Bonaldo, Alexandre B. Zootaxa 2024 2024-12-20 5555 4 451 496 Silva-Junior & Bonaldo 2024 [151,408,438,465] Arachnida Corinnidae Myrmecotypus Animalia Araneae 28 479 Arthropoda species ednae sp. nov.   Figs 18A–J   Type material.  BRAZIL: ♂ holotype,  Acre: Senador Guiomard, F. E., Catuaba, 10°04’28’’S, 67°37’00’’W,  15– 31.XII.2016, E.F. Femorato& J.A. Rafaelleg. ( INPA).   Paratypes: Bahia, Itamaraju[ 16°56’18.3’’S, 39°34’16.7’’W], 2♀, (MNRJ-13355).  Bahia, Camacan[ 15°25’10.1’’S, 39°29’37.5’’W], 1♂, (MNRJ-07605).   Etymology.The specific name is a patronym in honor of the first author’s mother, Edna Maciel Barbosa Silva.   Diagnosis.Both males and females of  Myrmecotypus ednae  spec. nov.resemble those of  M. candianii  spec. nov.by the elongate thoracic region (twice the length of the cephalic region), coxa I light brown and coxa II white. Males differ by the presence of an RTA and the embolus short and folded (compare Figs 18Gand 19G). Females differ by the epigynal transverse ridge recurved, with a large marginal sclerotized area (compare Figs 18Iand 19I).   Description. Male( paratypeMNRJ-07065). Total length 5.77. Carapace 3.27 long, 1.23 wide. Sternum 1.56 long, 0.56 wide. Abdomen 1.88 long, 1.28 wide. Eye diameters: AME 0.11, ALE 0.03, PME 0.06, PLE 0.08. Eye inter-distances: AME-AME 0.08, AME-ALE 0.05, ALE-PLE 0.14, PME-PME 0.20, PME-PLE 0.16, AME-PME 0.11. Carapace long and narrow, reddish-brown, with strong constriction between the cephalic and thoracic regions, lateral margin with two moderate constrictions, anterior margin truncated. Endites and labium yellowish-brown. Chelicerae yellowish-brown, three promarginal teeth of different sizes and two retromarginal teeth equal and equidistant. Sternum yellowish-brown, elongate and narrower between legs III and IV. Abdomen pear-shaped, with dorsal scute dark brown, nearly complete and covered by feathery hairs ( Fig. 18A, B). Ventral scute quadrangular-shaped, dark-brown, tracheal scute yellow ( Fig. 18C). Coxae I and II translucent white, III and IV light brown. Femora I and II white in promargin and retromargin, with two brown ventrolateral lines and brown dorsally; patellae, tibiae and tarsi white; metatarsi yellowish-brown. Legs III and IV yellowish-brown, with patella white ventrally. Leg measurements: I—femur 1.67 / tibia 1.68 / metatarsus 1.35; II—femur 1.48 / tibia 1.18 / metatarsus 1.18; III—femur 1.52 / tibia 1.19 / metatarsus 1.39; IV—femur 2.44 / tibia 1.65 / metatarsus 2.06. Spination: I-femur do0-1-0-0; tibia ve2-2-2 (3-3); metatarsus ve2-2/ II-femur do1-0-0-1, pl0-1-0-0, rl0-1-0-0; tibia ve2-2; metatarsus ve2-2/ III-femur do0-0-1-1; pl0-1-1, rl0-1-1; tibia do0-0-1, pl0-1-1, rl0-1-1, ve2-2; metatarsus pl1-1-0-1, rl1-1-0-1, ve2-2-2-1/ IV-femur do1-0-1-1, pl0-0-0-1, rl0-0-0-1; tibia do0-0-1, pl1-0-1, rl1-0-1, vep 1-0-1; metatarsus pl1-1-0-1, rl1-1-0-1, ve2-2. Palp with RTA spiniform; globose genital bulb drawn into moderately long neck, ending in short, folded embolus ( Fig. 18G, H).  Female( paratypeMNRJ-13355). Total length 7.31. Carapace 3.38 long, 1.31 wide. Sternum 1.61 long, 0.58 wide.Abdomen 3.18 long, 2.46 wide. Eye diameters:AME 0.11,ALE 0.06, PME 0.05, PLE 0.08. Eye inter-distances: AME-AME 0.08, AME-ALE 0.06, ALE-PLE 0.19, PME-PME 0.30, PME-PLE 0.20, AME-PME 0.15. Carapace reddish-brown, shape as in male. Endites and labium brown. Chelicerae brown, three promarginal teeth different sizes and two retromarginal teeth equal and equidistant. Sternum as in male, covered by feathery hairs. Abdomen globose, with moderately small, reddish-brown dorsal scute, feathers hairs covering as in male ( Fig. 18D). Ventral scute absent and tracheal scute present. Coxae I and II translucent white, III and IV brown. Femora I and II white on promargin and retromargin, with two brown ventrolateral lines and brown dorsally; patellae, tibiae and tarsi white; metatarsi yellowish-brown. Legs III and IV yellowish-brown, with patella white ventrally. Leg measurements: Ifemur 1.98; II—femur 1.69 / tibia 1.49 / metatarsus 1.32; III—femur 1.67 / tibia 1.34 / metatarsus 1.41; IV—femur 2.67 / tibia 1.75 / metatarsus 2.06. Spination: I-femur do0-1-0-0; tibia ve2-2-2 (3-3); metatarsus ve2-2/ II-femur do1-0-0-1, pl0-1-0-0, rl0-1-0-0; tibia ve2-2; metatarsus ve2-2/ III-femur do0-0-1-1; pl0-1-1, rl0-1-1; tibia do0-0-1, pl0-1-1, rl0-1-1, ve2-2; metatarsus pl1-1-0-1, rl1-1-0-1, ve2-2-2-1/ IV-femur do1-0-1-1, pl0-0-0-1, rl0-0-0-1; tibia do0-0-1, pl1-0-1, rl1-0-1, vep 1-0-1; metatarsus pl1-1-0-1, rl1-1-0-1, ve2-2. Epigyne with transverse ridge recurved, with large marginal sclerotized area. Vulva with two moderately large, globose spermathecae with short necks. Copulatory duct moderately thin, inserted laterally ( Fig. 18I, J).   FIGURE 18.  Myrmecotypus ednae  spec. nov.A–C, G–Iholotype male (INPA), D–F, J–K.paratype female (MNRJ-13355) Amale, dorsal view; Bsame, lateral view; Csame, ventral view; Dfemale, dorsal view; E, same, lateral view; Fsame, ventral view; Gmale palp, ventral view; Hsame, retrolateral view; Ifemale epigyne, ventral view; Jsame, dorsal view. White arrow indicating medial loop, black arrow indicating lateral loop. Abbreviations: E, embolus; RTA, retrolateral tibial apophysis; CO, copulatory opening; CD, copulatory duct; ST II, secondary spermathecae, ST I, primary spermathecae. Scale: 1 mm.  Variation.Length ( 3♂) total 6.30–6.85, carapace 3.50–3.90, femur I 1.65–1.78; ( 2♀) total 6.07–6.67, carapace 3.41–3.75, femur I 1.56–1.74.  Other material.  BRAZIL: Amazonas: Manaus, Paraná, Ilha de Curari[ 03°19’53.4’’S, 60°05’06.9’’W], 1♀,   3.VIII.1979, J. Adisleg. ( IBSP, IB-17283);  Samedata but 1♀( IBSP, IB-17291);  Samedata but 1♂,  7.IX.1962, K. Lenkoleg. (MZUSP-7969);   Bahia: Juçari, Fazenda São Francisco[ 14°29’30.2’’S, 42°32’25.6’’W], 2♀, 14.III.1970(MNRJ-07599);  Camacan[ 15°25’10.1’’S, 39°29’37.5’’W] (MNRJ-07605bis).  PERU:  Huanuco: Rio Yuyapichis[ 09°37’42.2’’S, 74°58’21.8’’W], 1♂, Hoheleg. (SMNK).   Distribution. Peruand Brazil( Fig. 26). 5004791359 2016-12-15 2016-12-31 2016-12-15 INPA E. F. Femorato & J. A. Rafael Brazil -10.074445 Catuaba 21 -67.61667 28 479 1 1 Acre holotype 5004791339 [199,1211,618,645] -16.938416 Itamaraju 1 -39.571304 28 479 2 2 Bahia paratype 5004791305 -15.419473 Camacan 1 -39.49375 28 479 1 1 Bahia paratype 5004791388 [397,1429,1995,2022] de Curari Brazil -3.3315 Ilha de Curari 1 -60.085247 29 480 1 1 Parana 5004791381 [151,635,151,177] 1979-08-03 IBSP J. Adis Same Same 30 481 IB-17283, IB-17291 2 1 1 5004791371 [643,1056,151,177] 1979-08-03 IBSP J. Adis Same Same 30 481 IB-17283, IB-17291 2 1 1 5004791308 1979-08-03 IBSP J. Adis Bahia -14.491722 Same 1 -42.540443 Same 30 481 IB-17283, IB-17291 2 1 1 5004791352 1962-09-07 SMNK K. Lenko Peru Bahia -14.491722 Fazenda Sao Francisco 1 -42.540443 Jucari 30 481 2 2 1 Huanuco 5004791349 [342,1042,222,249] 1962-09-07 SMNK K. Lenko Peru Bahia -14.491722 Fazenda Sao Francisco 1 -42.540443 Jucari 30 481 2 2 1 Huanuco 5004791377 1962-09-07 SMNK K. Lenko Peru Bahia -14.491722 Fazenda Sao Francisco 1 -42.540443 Jucari 30 481 2 2 1 Huanuco