Eulibitia clytemnestra, Medrano & Kury, 2017

Medrano, Miguel & Kury, Adriano B., 2017, Taxonomic revision of the Andean genus Eulibitia Roewer, 1912 (Arachnida, Opiliones, Cosmetidae), with the description of five new species, European Journal of Taxonomy 357, pp. 1-55 : 12-16

Eulibitia clytemnestra sp. nov.

urn:lsid:zoobank.org:act:3AB34A1C-1F3F-4748-859F-80D4C759152E

Figs 8–10 , 33

Diagnosis

Paramedian tubercles of posterior margin of scutum rounded and contiguous, other areas finely granulated, without tubercles ( Fig. 9A ). Ladder mask only present in area II, entering only a little into scutal grooves ( Fig. 8A ). Differs from other species of the genus because of the smooth lateral margins ( Fig. 9A ). Coda very short and mid-bulge asymmetrical, coxa IV slightly granulated, without clavi inguines ( Figs 8A , 9A ). Femur IV straight, without conspicuous ornamentation ( Figs 8D, F , 10 A–C).

Etymology

Noun in apposition from Clytemnestra, daughter of Leda and sister of Helen of Troy, from Greek mythology. Two of the new species of Eulibitia have been named after Helen and Clytemnestra to complete the four siblings originating from the union of Zeus and Leda.

Material examined

Holotype

COLOMBIA: ♂, Santander Department, Encino, La Sierra, SFF Guanentá-Alto Río Fonce , 6°0′27.33′′ N, 73°08′56.02′′ W, 2450–2600 m a.s.l., 10 Jan. 2002, gallery forest, pitfall, S. Arias leg. ( ICN-AO 1148 ).

Description

Male

MEASUREMENTS. CL = 2.52, AL = 4.29, CW = 3.71, AW = 6.05, Fe IV = 6.67, Ti IV = 5.54.

DORSUM ( Figs 8 , 9A ). Dorsal scutum beta-shaped, with asymmetrical mid-bulge. Posterior margin of scutum with two paramedian rounded tubercles. Lateral margins of scutum smooth. Posterior margin

of scutum with row of small tubercles. Tergites with row of small tubercles and anal operculum finely granular.

VENTER ( Fig. 8C, E ). Free sternites finely granular; coxae II–IV finely and uniformly granular; coxa I with longitudinal row of tubercles and smooth area corresponding to locking area of Pp Tr.

CHELICERAE ( Fig. 10F ). Basichelicerite with minute tubercles on ecto-basal side and two on antero-mesal corner; movable finger with row of tubercles, giving a serrated appearance, and large basal tubercle; fixed finger with five tubercles decreasing in size from basal to distal part of finger.

PEDIPALPS ( Fig. 10 D–E). Trochanter with strong ventral process. Femur with pronounced dorsal row of seven tubercles, with ventral row of ten setiferous tubercles and mesodistal process. Patella with low mesal keel.

LEGS ( Figs 8F , 10 A–C, G). Coxa IV finely granulated, without clavi inguines, distal apophysis of coxa IV slightly tuberculate and directed laterally. Trochanter IV with small retro-distal apophysis. Femur IV straight, with two longitudinal ventral rows of small tubercles along entire length. Patella IV substraight, with small tubercles. Tarsal counts: 6(3)/12–11(3)/7–?/8.

COLOR ( Fig. 8 ). Body and appendages color background 68 (Strong Orange Yellow), ladder mask 104 (Pale Greenish Yellow). Trochanter and tarsomeres 98 (Brilliant Greenish Yellow).

GENITALIA ( Fig. 9 B–C). Ventral plate subrectangular, narrower basally and distal border hardly concave; dorsal apophysis of glans long and rounded, wattle long. Shapes and organization of macrosetae as follows: MS C1–C2 large, curved and flat; MS D1–D2 large and straight, D2 smaller than D1 and located closer to MS A1; MS A1–A2 large, cylindrical, straight, located in basal middle of ventral plate (asymmetry in number of MS A already seen in E. maculata ); MS B and MS E1–E2 ventral, very small and immersed in microsetae. Pair of MS B at base of ventral plate.

Female

Unknown.

Distribution

Only known from the type locality, in the WWF ecoregion Magdalena Valley montane forests (NT0136), tropical and subtropical moist broadleaf forest biome, in Santander Department ( Fig. 33 ).

Figures

Fig. 8. Eulibitia clytemnestra sp. nov., ♂, holotype (ICN-AO 1148), habitus. A. Dorsal view. B. Frontal view. C. Posterior view. D. Panoramic, dorsal view. E. Lateral view. F. Detail of apical distal part of femur IV and trochanter. Scale bars: 1 mm.

Fig. 9. Eulibitia clytemnestra sp. nov., ♂, holotype (ICN-AO 1148). A. Habitus, dorsal view. B–C. Apical portion of penis. B. Dorsal view. C. Lateral view. Scale bars: A = 1 mm; B–C = 0.1 mm.

Fig. 10. Eulibitia clytemnestra sp. nov., ♂, holotype (ICN-AO 1148). A. Left femur and trochanter IV, dorsal view. B. Same, prolateral view. C. Same, ventral view. D. Left pedipalpus, tibia and tarsus in ventral view. E. Same, femur and patella in mesal view. F. Left chelicera, dorsal view. G. Left tibia and tarsomeres of leg I, prolateral view. Scale bars: 1 mm.

Fig. 33. Northern Andes in Colombia, showing localities for Eulibitia leda sp. nov., E. clytemnestra sp. nov. and E. scalaris (Sørensen in Henriksen, 1932) comb. nov. Colored patches on the background represent WWF ecoregions.