Eulibitia scalaris (Sørensen, 1932),

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: 40-48

publication ID

https://doi.org/10.5852/ejt.2017.357

publication LSID

lsid:zoobank.org:pub:7A3BDEB4-DCF4-4111-A164-573CB62DC09F

DOI

http://doi.org/10.5281/zenodo.3851990

persistent identifier

http://treatment.plazi.org/id/03AE87A6-0931-7E60-BA67-FCD4FE655CD1

treatment provided by

Carolina

scientific name

Eulibitia scalaris (Sørensen, 1932)
status

comb. nov.

Eulibitia scalaris (Sørensen, 1932)  comb. nov.

Figs 27–30View FigView FigView FigView Fig, 31AView Fig, 33View Fig; Table 5

Libitia (Messa) scalaris Sørensen  in Henriksen, 1932: 414.

Acromares lateralis Goodnight & Goodnight, 1943: 2  , fig 7. syn. nov.

Messa scalaris  – Mello-Leitão 1933: 112.

Messatana scalaris  – Strand 1942: 398.

Cynorta lateralis  – Goodnight & Goodnight 1953: 38.

Acromares lateralis  – Flórez & Sánchez 1995: 368. — Kury 2003: 37.

Diagnosis

This species is similar to E. h-inscriptum by having paramedian tubercles in areas I, III and on the posterior margin of the scutum, but differs from it because its ladder mask does not reach the lateral margins of the scutum ( Fig. 28View Fig C–H), and from the other species of Eulibitia  by the size of the coda ( Fig. 27AView Fig), ⅓ of the mid-bulge length (vs ¼ of the mid-bulge length in other species, except E. h-inscriptum). It is similar to E. castor  sp. nov. by having two paramedian tubercles in areas I, III

and on the posterior margin, and for the symmetrical mid-bulge, but it differs from it by the shape of the tubercles on the posterior margin, being rounded instead of acuminate ( Fig. 28AView Fig).

Etymology

Scalaris: refers to the shape of the ladder of white blots on DS. Lateralis: refers to the rails of the ladder mask on DS (visible in the holotype of Acromares lateralis  ).

Material examined

Syntypes

COLOMBIA: 2 ♂♂, 2 ♀♀, Cundinamarca Department, Bogotá ( BMNH, examined by photograph).

Other material

COLOMBIA: Boyacá Department – 1 ♀, Chiquinquirá, Monte Batallón Sucre, 5°35′59.33′′ N, 73°50′9.28′′ W, 2580 m a.s.l., 24 May 1979, C. Hernandez leg. ( ICN-AO 56); 4 ♂♂, 7 ♀♀, Paipa, La Pradera, 5°45′36.26′′ N, 73°8′29.37′′ W, 2650 m a.s.l., 2 Dec. 1978, I. de Arevalo leg. ( ICN-AO 84); 2 ♀♀, Arcabuco, 5°45′0′′ N, 73°28′45′′ W, 2500 m a.s.l., S. Sierra leg. ( ICN-AO 221); 1 ♂, Arcabuco, 5.75012° N, 73.433482° W, 2600 m a.s.l., 23 Sep. 2013, A. García and S. Galvis leg. ( ICN-AO 1202); 34 ♂♂, 49 ♀♀, Arcabuco, 5.75012° N, 73.433482° W, 2600 m a.s.l., 23 Sep. 2013, A. García and S. Galvis leg. ( ICN-AO 1208); 7 ♂♂, 6 ♀♀, Villa de Leyva, SFF Iguaque, 5.720016° N, 73.457901° W, 2800 m a.s.l., 22 Sep. 2013, A. García and S. Galvis leg. ( ICN-AO 1214); 2 ♂♂, 3 ♀♀, Arcabuco, 5.75012° N, 73.433482° W, 2600 m a.s.l., 23 Sep. 2013, A. García and S. Galvis leg. ( ICN-AO 1372); 2 ♂♂, 2 ♀♀, Arcabuco, 5.75012° N, 73.433482° W, 2600 m a.s.l., 23 Sep. 2013, A. García and S. Galvis leg. ( ICN-AO 1378); 2 ♀♀, Villa de Leyva, SFF Iguaque, Cabaña Chaina, Lado Río, 5°42′ N, 73°27′ W, 2600 m a.s.l. ( IAvH 40, IAvH 42); 1 ♂, same collection data as preceding ( IAvH 41); 1 ♀, Villa de Leyva, Colegio Antonio Nariño, 5.63° N, 73.527° W, 2200 m a.s.l. ( IAvH 46); 1 ♀, Arcabuco, near El Cometa, 5.7439° N, 73.4713° W ( IAvH 53); 1 ♀, Villa de Leyva, Colegio Antonio Nariño, 5.63° N, 73.527° W, 2200m a.s.l.( IAvH 93); 1♂,Villa de Leyva,ColegioAntonio Nariño, 5.63°N, 73.527°W, 2200m a.s.l.( IAvH 94); 1 ♂, 4 ♀♀,Villa de Leyva, SFF Iguaque, 5°42′ N, 73°27′W, 2941 m a.s.l., Nov.2011,A. Garcia and AB Kury leg. ( MNRJ 19380). Cundinamarca Department – 1 ♂, Susa,Vereda La Fragua, Finca Bermejales, 5°25′37.90′′ N, 73°49′11.81′′ W, 2710 m a.s.l., 30 Dec. 2006, J. Pinzon and G. Alarcón leg. ( ICN-AO 481); 2 ♀♀, Soacha, Vereda San Francisco, Granja Ecológica El Porvenir, 4°34′30.13′′ N, 74°17′49.62′′ W, 10 Jul. 2009, pastureland, fallen trunk, G.Amat, C. Cantor, I. Romero and D. Martínez leg. ( ICN-AO 602); 2 ♂♂, Suesca, Vereda Santa Rosa, 5°6′20.71′′ N, 73°45′9.02′′ W, 30 Mar. 2010, paddock, under trunk, L.Sanchez leg.( ICN-AO 669); 2♂♂,SanAntonio del Tequendama,Vereda Quinta Colombia,4°35.603′′N, 74°20.170′′ W, 1733 m a.s.l., 20 Aug. 2008, R. Botero, D. Luna and J. A. Ochoa leg. ( ICN-AO 792); 1 ♂, San Francisco, near Pueblo, 4°57′37.40′′ N, 74°16′45.08′′ W, 8 May 2011, D. Martínez, M. Medrano and A. García leg. ( ICN-AO 846); 2 ♂♂, 2 ♀♀, Albán, Vereda Namay 4°55′31.38′′ N, 74°27′12.47′′ W, 28Jun.2008,J.Cepeda leg.( ICN-AO 504); 11♂♂, 11 ♀♀, 4immature,Cota [4.813113°N, 74.110399°W], 30Aug. 2006,A. Giupponi leg. ( MNRJ 17948); 1 ♂, Mosquera, Sabrinsky [4.688968° N, 74.271632° W], 10 Jan. 2014, under rocks, J. Guerrero leg. ( ICN-AO 1404); 4 ♂♂, 6 ♀♀, Albán, Vereda Namay, 4°55′31.38′′ N, 74°27′12.47′′ W, 1584 m a.s.l., Oct. 2007 – Aug. 2008, Cafetal, J. Cepeda, C. Cantor and D. Luna leg. ( ICN-AO 935); 1 ♂, 1 ♀, Cota Sendero, Cerro del Majuy, 4°48′42.16′′ N, 74°6′59.14′′ W, 3000 m a.s.l., 24 Jun. 2012, under rock, C. Castellanos and Y. Cifuentes leg. ( ICN-AO 1058); 2 ♂♂, 2 ♀♀, Albán, Vereda Namay, 4°55′31.38′′ N, 74°27′12.47′′ W, 28 Jun. 2008, J. Cepeda leg. ( ICN-AO 504); 1 ♂, 1 ♀, Albán, Reserva Natural Peñas del Aserradero, 4.875959° N, 74.422635° W, 2630 m a.s.l., Aug. 2013, under trunk, M. Medrano, E. Flórez, A. Sabogal and D. Martínez leg. ( ICN-AO 1387); 2 ♀♀, 1 immature, Chocontá, Vereda Boquerón Bajo, Finca Nápoles, 5.094417° N, 73.670240° W, 13 Feb 2015, A. García and T. Rodrígues leg. ( ICN-AO 1434).

Description

Male (based on MNRJ 17948)

MEASUREMENTS. CL = 1.62, AL = 3.06, CW = 2.63, AW = 4.31, Fe IV = 2.94, Ti IV = 2.38.

DORSUM ( Figs 27View Fig, 28AView Fig). Dorsal scutum beta-shaped, with symmetrical mid-bulge. Areas I, III and posterior margin with two paramedian tubercles. Lateral margins with irregular row of minute granules at

mid-bulge. Posterior margin of scutum with row of small tubercles. Tergites with row of small tubercles and anal operculum finely granular.

VENTER ( Fig. 27View Fig D–E). Free sternites finely granular; coxae II–IV finely and uniformly granular; coxa I with longitudinal row of tubercles and smooth area corresponding to lace area of pedipalp.

CHELICERAE ( Fig. 29View Fig F–G). Basichelicerite uniformly covered with tubercles of different sizes, some basal and one mesodistal larger; movable finger with row of ten tubercles; fixed finger with four tubercles, decreasing in size from basal to distal part of finger.

PEDIPALPS ( Fig. 29View Fig D–E). Trochanter with strong ventral apophysis. Femur with pronounced dorsal keel, with ventral row of eight setiferous tubercles and mesodistal process. Patella with mesal keel formed by five small tubercles and large one distally. Shallow slit along tibia mesal surface, separating dorsal and ventral sides.

LEGS ( Figs 28BView Fig, 29View Fig A–C). Coxa IV granulated, with small clavi inguines, larger in females. Trochanter IV with small retro-distal apophysis. Femur IV substraight, with two longitudinal ventral rows of small

tubercles along entire length. Patella IV substraight, with small setiferous tubercles. Tarsal counts: 5–5/10–10/6–6/6–7.

COLOR ( Fig. 27View Fig). Body and appendages color background 40 (Strong Reddish Brown) mottled in 44 (Dark Reddish Brown), ladder mask 104 (Pale Greenish Yellow). Trochanters and tarsomeres 83 (Brilliant Yellow).

GENITALIA ( Fig. 30View Fig). VP of penis trapezoidal, narrower basally, with distal border concave; dorsal apophysis of glans subsquare to rounded, wattle of stylus long. Shapes and organization of macrosetae as follows: MS C1–C2 large, curved and flat; MS D1–D2 large and straight; MS A1–A2 large, straight, cylindrical, located in basal middle of ventral plate; MS B and MS E1–E2 ventral, very small, immersed in microsetae. MS B most basal MS. Microsetae confined to lateral margins of ventral plate.

Variation

Pattern of yellow spots as in Fig. 28View Fig C–H. Tubercles of pedipalpal femur vary in number from 5 to 8. Tarsal counts: 5–6; 7–12; 6–7; 6–7. Variation of measurements is given in Table 5.

Female

With larger clavi inguines and longer coda than males ( Fig. 28View Fig F–G). Males with thicker basitarsus (but not notably swollen) ( Fig. 28BView Fig).

Distribution

E. scalaris  occurs in the WWF ecoregions: (1) Magdalena Valley montane forests (NT0136), tropical and subtropical moist broadleaf forest biome, in Cundinamarca and Boyacá Departments, (2) Magdalena Valley dry forests (NT0221), tropical and subtropical dry broadleaf forest biome, in Tolima Department, and (3) Northern Andean páramo (NT1006), montane grassland and shrubland biome, in Cundinamarca and Boyacá Departments ( Fig. 33View Fig).

Remarks

Goodnight & Goodnight (1943) described Acromares lateralis  and placed it in that genus because they thought that the outstanding tubercles of the dorsal scutum were localized in area IV. However, examination of a photograph of the type material allows us to conclude that the tubercles are on the posterior margin of the scutum instead of on area IV and to recognize this species as a synonym of E. scalaris  comb. nov.

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Cosmetidae

Genus

Eulibitia

Loc

Eulibitia scalaris (Sørensen, 1932)

Medrano, Miguel & Kury, Adriano B. 2017
2017
Loc

Acromares lateralis

Kury A. B. 2003: 37
Florez E. & Sanchez H. 1995: 368
1995
Loc

Cynorta lateralis

Goodnight C. J. & Goodnight M. L. 1953: 38
1953
Loc

Acromares lateralis

Goodnight C. J. & Goodnight M. L. 1943: 2
1943
Loc

Messatana scalaris

Strand E. 1942: 398
1942
Loc

Messa scalaris

Mello-Leitao C. F. de 1933: 112
1933
Loc

Libitia (Messa) scalaris Sørensen

Henriksen K. L. 1932: 414
1932