Myrmecium girafales, Silva-Junior & Bonaldo, 2019

Silva-Junior, Claudio J. & Bonaldo, Alexandre B., 2019, Four new species of Myrmecium Latreille, 1824 and complementary description of M. machetero Candiani & Bonaldo, 2017 (Araneae: Corinnidae: Castianeirinae), Zootaxa 4706 (2), pp. 391-400 : 394-396

Myrmecium girafales sp. nov.

Fig. 3A E

Type material. ♀ holotype, from Dantas-La Molina, Puerto Inca , 09°38’S 75°00’W, Dantas-La Molina, Huánuco, Peru, 18.V–VI.1987, leg. D. Silva ( MUSM 0504941 ) .

Etymology. The specific name is a noun in apposition referring to the tall and skinny character Professor Girafales from the Mexican Television Show “Chavo del Ocho”, in reference to the characteristically long epigynal spermathecal neck.

Diagnosis. The female of M. girafales is readily recognized by the conformation of the spermathecal necks, which are narrow, straight, medially fused to each other, and extremely long in relation to the secondary spermathecae ( Figs 3D, E ). Male: unknown.

Description. Female (holotype): carapace red-orange, covered with smaller granules in thoracic region and cephalic region ( Fig. 3A ); with mild depression dorsally in posterior end of carapace ( Fig. 3B ); short, thin white hairs present; long thin white hairs between grains; sternum with few grains, red-orange; endites and labium yellowishorange; chelicerae yellowish-orange ( Fig. 3C ). Abdomen light brown, with two dark half-stripes in the middle of the abdomen, short vitreous brown scutum. Legs I and II yellowish-orange, with retroventral brown stripe in Cx, Fe and Ti; Ta and Mt I brown. Legs III and IV reddish-yellow, in Cx, Fe; Ti and Mt reddish-brown. Chelicerae: promarginal teeth 3; retromarginal teeth 5. Sternum and carapace not fused between legs II and III; coxae II separated from coxae III by more than twice coxa II width; sternal posterior plate pentagonal. Total length 11.16, carapace 6.63 long, 1.51 wide. Eye diameters: AME 0.15, ALE 0.11, PME 0.12, PLE 0.10. Leg measurements: I—femur 2.45 / tibia 2.59 / metatarsus 2.12; II—femur 2.01/ tibia 1.90 / metatarsus 1.63; III— femur 1.78 / tibia 1.62 / metatarsus 1.61; IV—femur 2.53 / tibia 2.36 / metatarsus 2.64. Leg spination: I—tibia vp0-0-0-1-1, vr0-0-0-1-1; metatarsus vp1-0- 1-0-0, vr1-0- 1-0-0. II—tibia vp1-0-1-0-0, vr1-0-1-0-0; metatarsus vp1-0-0-1-0, vr1-0-1-0-0. III—tibia p0-1-0-0-0, r0-1-0-0-0, vp0-1-0-1-0, vr0-1-0-1- 0; metatarsus p1-0-0-0-0, r1-0-0-0-0, vp1-1-0-0-0, vr1-1-0-0-0. IV—tibia p0-0- 1-0-0, r0-0-1-0-0, vp0-1-0-1-0, vr0-1-0-1-0; metatarsus p1-0-0-0-0, r1-0-0-0-0, vp1-0-0-0-1, vr1-0-0-0-1. Epigynal plate long, with longitudinal depression, region of the secondary spermathecae elevate, copulatory openings with semi-circular plate, connected directly to secondary spermathecae; secondary spermathecae with long, posteriorly directed glandular knob; primary spermatheca globular, slightly larger than secondary spermathecae, fertilization duct flattened ( Figs 3D, E ).

Material examined. Only the type.

Distribution. Known only from the type locality in Peru ( Map 1 ).

Figures

MAP 1. Distribution records of species of Myrmecium from Perú (white symbols, species recorded by Candiani & Bonaldo, 2017; red symbols, new species and new record of Myrmecium machetero Candiani & Bonaldo, 2017).

FIGURES 3A E. Myrmecium girafales sp. nov.: A female, dorsal view; B same, lateral view (arrow indicating depression in posterior end of carapace); C same, ventral view; D epigynum, ventral view; E same, dorsal view (dark setae indicating globular knob). Abbreviations: CO, copulatory duct; FD, fertilization duct; ST I, primary spermathecae; ST II, secondary spermathecae Scale = 1mm.