Myrmecotypus ednae, Silva-Junior & Bonaldo, 2024

Silva-Junior, Cláudio J. & Bonaldo, Alexandre B., 2024, A revision of the South American species of the ant-mimicking spider genus Myrmecotypus O. Pickard-Cambridge, 1894 (Araneae: Corinnidae: Castianeirinae), Zootaxa 5555 (4), pp. 451-496 : 479-481

publication ID	https://doi.org/ 10.11646/zootaxa.5555.4.1
publication LSID	lsid:zoobank.org:pub:24FACE7D-F2B3-47CB-BF71-FF85CBECE77C
persistent identifier	https://treatment.plazi.org/id/03B787E5-CF19-FFF0-0ED7-B0871E88FEEA
treatment provided by	Plazi
scientific name	Myrmecotypus ednae
status	sp. nov.

Treatment

Myrmecotypus ednae spec. nov.

Figs 18A–J View FIGURE 18

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. Rafael leg. ( INPA) GoogleMaps .

Paratypes: Bahia, Itamaraju [16°56’18.3’’S, 39°34’16.7’’W], 2♀, (MNRJ-13355) GoogleMaps . Bahia, Camacan [15°25’10.1’’S, 39°29’37.5’’W], 1♂, (MNRJ-07605) GoogleMaps .

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 18G View FIGURE 18 and 19G View FIGURE 19 ). Females differ by the epigynal transverse ridge recurved, with a large marginal sclerotized area (compare Figs 18I View FIGURE 18 and 19I View FIGURE 19 ).

Description. Male (paratype MNRJ-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 View FIGURE 18 ). Ventral scute quadrangular-shaped, dark-brown, tracheal scute yellow ( Fig. 18C View FIGURE 18 ). 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 do 0-1-0-0; tibia ve 2-2-2 (3-3); metatarsus ve 2-2/ II-femur do 1-0-0-1, pl 0-1-0-0, rl 0-1-0-0; tibia ve 2-2; metatarsus ve 2-2/ III-femur do 0-0-1-1; pl 0-1-1, rl 0-1-1; tibia do 0-0-1, pl 0-1-1, rl 0-1-1, ve 2-2; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2-2-1/ IV-femur do 1-0-1-1, pl 0-0-0-1, rl 0-0-0-1; tibia do 0-0-1, pl 1-0-1, rl 1-0-1, ve p 1-0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2. Palp with RTA spiniform; globose genital bulb drawn into moderately long neck, ending in short, folded embolus ( Fig. 18G, H View FIGURE 18 ).

Female (paratype MNRJ-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 View FIGURE 18 ). 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 do 0-1-0-0; tibia ve 2-2-2 (3-3); metatarsus ve 2-2/ II-femur do 1-0-0-1, pl 0-1-0-0, rl 0-1-0-0; tibia ve 2-2; metatarsus ve 2-2/ III-femur do 0-0-1-1; pl 0-1-1, rl 0-1-1; tibia do 0-0-1, pl 0-1-1, rl 0-1-1, ve 2-2; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2-2-1/ IV-femur do 1-0-1-1, pl 0-0-0-1, rl 0-0-0-1; tibia do 0-0-1, pl 1-0-1, rl 1-0-1, ve p 1-0-1; metatarsus pl 1-1-0-1, rl 1-1-0-1, ve 2-2. 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 View FIGURE 18 ).

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♀ GoogleMaps ,

3.VIII.1979, J. Adis leg. ( IBSP, IB-17283 ); Same data but 1♀ ( IBSP, IB-17291 ); Same data but 1♂ , 7.IX.1962, K. Lenko leg. (MZUSP-7969); Bahia: Juçari, Fazenda São Francisco [14°29’30.2’’S, 42°32’25.6’’W], 2♀ GoogleMaps , 14.III .1970 GoogleMaps (MNRJ-07599); Camacan [15°25’10.1’’S, 39°29’37.5’’W] (MNRJ-07605bis). PERU: Huanuco: Rio Yuyapichis GoogleMaps [09°37’42.2’’S, 74°58’21.8’’W], 1♂, Hohe leg. (SMNK).