Libitia bipunctata Sørensen, 1932

Medrano, Miguel, Ázara, Ludson Neves de & Kury, Adriano Brilhante, 2020, The short-legged Andean cosmetids revisited: the genus Libitia Simon, 1879 with description of two new species (Opiliones, Cosmetidae), European Journal of Taxonomy 634, pp. 1-25 : 5-9

publication ID

https://doi.org/10.5852/ejt.2020.634

publication LSID

lsid:zoobank.org:pub:66AEE1D7-51BF-4583-9A19-947F61ECC7DE

DOI

https://doi.org/10.5281/zenodo.3795372

persistent identifier

https://treatment.plazi.org/id/03AC87DB-EC57-CA12-7D2D-5363FBB249C8

treatment provided by

Valdenar

scientific name

Libitia bipunctata Sørensen, 1932
status

comb. rev

Libitia bipunctata Sørensen, 1932 comb. rev.

Figs 1–4 View Fig View Fig View Fig View Fig , 14 View Fig

Libitia (Libitia) bipunctata Sørensen in Henriksen, 1932: 417 .

Libitia bipunctata – Mello-Leitão 1933: 109.

Libitiella bipunctata – Roewer 1947: 8, pl. 1, fig. 3.

Diagnosis

Can be distinguished from L. cordata and L. gandalf sp. nov. by having small white-yellowish blots restricted to the marginal scutal groves (or sulci) (rails, see Medrano & Kury 2016) as dissociated

pattern; from L. iguaque sp. nov. by having coda as long as mid-bulge and by possessing penis with MS D1 closer to MS C2 than MS D2.

Etymology

The name is derived from the Latin ‘ bipunctatus ’, meaning ‘one who has two blots’.

Material examined

Syntypes

COLOMBIA • 2 ♀♀; Cundinamarca Department [originally mistakenly reported as “Venezuela”], without further locality data; BMNH • 3 ♂♂, 2 ♀♀; between La Unión and Páramo de Chingaza [originally misspelled as “Chingusa”]; 1000–2400 m a.s.l.; ZMG .

Other material

COLOMBIA – Cundinamarca Department • 26 ♂♂, 17 ♀♀, 20 juvs; Bogotá, Cantera Soratama ; 2800 m a.s.l.; A. Álvarez leg.; MPUJ_ ENT 11432 View Materials 1 ♂, 1 ♀; Bogotá, Humedal La Conejera; 4.760671° N, 74.106359° W; 2600 m a.s.l.; Apr. 2000; ICN-AO 292 GoogleMaps 1 ♂; Bogotá, Quebrada La Vieja ; 4.649889° N, 74.048065° W; 2600 m a.s.l.; 12 Dec. 2010; O. Villarreal, D. Luna and M. Medrano leg.; ICN-AO 922 GoogleMaps 4 ♂♂, 16 ♀♀; Bogotá, Sierras del Chicó , 4.671375° N, 74.038878° W; 15 May 2007; I. Morales leg.; ICN-AO 470 GoogleMaps 10 ♀♀; Bogotá, Usme, Parque Entrenubes, Cerro Juan Rey ; 4.521586° N, 74.097581° W; 2700 m a.s.l.; 23–25 May 2003; L. Benavides leg.; ICN-AO 420 GoogleMaps 1 ♂, 14 ♀♀; same collection data as for preceding; ICN-AO 419 GoogleMaps 1 ♂; Choachí, Páramo Cruz Verde vía Bogotá-Choachí ; 4.592793° N, 74.033624°W; 3300 m a.s.l.; 14 Dec. 1979; ICN-AO 76 GoogleMaps 1 ♂, 1 ♀; Guasca, Reserva Biológica El Encenillo ; 4.794559° N, 73.909036° W; 8–10 Dec. 2012; A. Herrera, C. Suárez and E. Ariza leg.; ICN-AO 1383 GoogleMaps 1 ♂, 3 ♀♀; Guasca, Reserva Biológica El Encenillo ; 8–10 Dec. 2012; C. Suárez and E. Ariza leg.; necrotrampa; ICN-AO 1204 12 ♀♀; La Calera, E.A.A.B. Club La Aguadora - Embalse de San Rafael ; 4.706040° N, 74.008119° W; 2700 m a.s.l.; Sep. 2010; P. Barriga and D. Tobar leg.; ICN-AO 472 GoogleMaps 5 ♀♀; same collection data as for preceding; ICN-AO 484 GoogleMaps 1 ♂; Parque Nacional Natural Chingaza, Alto de La Bandera ; 4.719018° N, 73.820675° W; 3660 m a.s.l.; IAvH-I-64 GoogleMaps 1 ♂; same collection data as for preceding; IAvH-I-67 GoogleMaps 1 ♀; same collection data as for preceding; IAvH-I-76 GoogleMaps 1 ♀; same collection data as for preceding; IAvH-I-77 GoogleMaps 1 ♂; Parque Nacional Natural Chingaza, La Siberia; 4.712840° N, 73.945862° W; 3170 m a.s.l.; IAvH-I-72 GoogleMaps 1 ♀; same collection data as for preceding ; IAvH-I-73 GoogleMaps 1 ♂; Parque Nacional Natural Chingaza , Vda. El Manzano, Reserva Forestal Río Blanco , Palacio Laguna Brava ; 4.675665° N, 73.880396° W; 2930 m a.s.l.; IAvH-I-87 GoogleMaps 1 ♀; Parque Nacional Natural Chingaza, Valle del Fraylejón ; 4.525783° N, 73.774845° W; 3170 m a.s.l.; IAvH-I-122 GoogleMaps 4 ♂♂, 2 ♀♀; Parque Nacional Natural Chingaza ; 4.575° N, 73.853° W; 2950 m a.s.l.; Y. Cifuentes leg.; ICN-AO 1437 GoogleMaps 1 ♀; San Antonio del Tequendama, Los Tunos ; 4.564730° N, 74.218390° W; 2009; ICN-AO 996 GoogleMaps 1 ♂; Sibate, Alto de San Miguel ; 4.450395° N, 74.300759° W; 2630 m a.s.l.; 1 Dec. 1979; I. de Arevaldo leg.; ICN-AO 78 GoogleMaps 1 ♂, 1 ♀; Soacha, near Chusacá ; 4.538153° N, 74.280819° W; 2770 m a.s.l.; Dec. 1979; ICN-AO 52 GoogleMaps 1 ♂; Zipaquirá, Vereda Ventalarga, Represa Pantano Redondo ; 5.042453° N, 74.036160° W; 3000 m a.s.l.; 27 Apr. 2013; E. Florez et al. leg.; ICN-AO 468 GoogleMaps .

Redescription

Male (ICN 419)

MEASUREMENTS. CL = 1.4, AL = 2.7, CW = 2.4, AW = 3.3, IOD = 0.6, Fe I = 1.7, Ti I = 1.3, Fe II = 2.9, Ti II = 2, Fe III = 2.5, Ti III = 1.5, Fe IV = 2.7, Ti IV = 2.1.

DORSUM ( Fig. 1 View Fig A–D). Dorsal scutum alpha-type, finely granular. Free tergites with rows of granules. Posterior margin of dorsal scutum convex. Small white-yellowish blots restricted to the marginal scutal groves, not invading the areas of mesotergum nor grooves medially.

VENTER. 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. Anal operculum finely granular

CHELICERAE ( Fig. 3 View Fig B–C). Basichelicerite finely and uniformly granular with some rounded protuberances in basal and ectal margins, two ectodistal small setiferous protuberances. Movable finger with row of eight teeth; fixed finger with five triangular teeth, decreasing in size from distal to basal part of finger.

PEDIPALPS ( Fig. 3A View Fig ). Trochanter with strong ventral apophysis. Femur dorsally convex without pronounced dorsal keel or tubercles, with ventral row of ten well-formed setiferous tubercles and a mesodistal process. Patella with mesal keel. Shallow slit along tibia mesal surface, separating dorsal and ventral sides.

LEGS ( Fig. 1B View Fig , E–F). Uniformly granular, femora III and IV slighted curved backwards. Coxae I-IV with prolateral conical apophyses, I and II larger than III and IV. Tarsal claws of legs III and IV smooth. Tarsal counts: 5(3)/6(3)/5/5.

COLOR ( Fig. 1 View Fig ). Body and appendages background Strong Orange Yellow (68) mottled in Dark Yellowish Brown (78), ladder mask Pale Greenish Yellow (104). Pedipalpus as well as trochanters and tarsomeres of legs Light Greenish Yellow (101).

Female

Dorsal scutum and Fe IV shorter than males, with coda wider. Basitarsomeres I, III and IV not enlarged.

Variation ( Fig. 2 View Fig )

Pattern of yellow spots varying from an immaculate dorsal scutum to a well-filled ladder mask.

Habitat

Some specimens (material examined) were collected in leaf litter and under rocks from High-Andean forest to Paramo, between 2600–3660 m, using both manual collect and passive methods, as a pitfall or ‘necrotrampa’ used for animals with affinity for decomposed organic matter.

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

ZMG

Zoologischen Museums Greifswald

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Cosmetidae

Genus

Libitia

Loc

Libitia bipunctata Sørensen, 1932

Medrano, Miguel, Ázara, Ludson Neves de & Kury, Adriano Brilhante 2020
2020
Loc

Libitiella bipunctata

Roewer C. F. 1947: 8
1947
Loc

Libitia bipunctata

Mello-Leitao C. F. de 1933: 109
1933