The short-legged Andean cosmetids revisited: the genus Libitia Simon, 1879 with description of two new species (Opiliones, Cosmetidae) Author Medrano, Miguel C7F7D4CF-F9B2-44AF-9F03-86278ADBD4F2 miangelmed@gmail.com Author Ázara, Ludson Neves de 4ECF193A-694C-43CE-8EE6-F197EDDA4414 Author Kury, Adriano Brilhante 60FAE1F8-87F7-4A5F-BE78-BEB25BC4F898 text European Journal of Taxonomy 2020 2020-04-24 634 1 25 journal article 22444 10.5852/ejt.2020.634 6531d570-f61a-49ae-a7a2-8167a41981fc 3778764 66AEE1D7-51BF-4583-9A19-947F61ECC7DE Genus Libitia Simon, 1879 Libitia Simon, 1879: 216 [ type species: Cosmetus cordatus Gervais, 1844 , by subsequent designation of Roewer (1912) ]. Libitiella Roewer, 1947: 8 [ type species: Libitia bipunctata Sørensen, 1932 , by original designation]. syn. nov. Libitia – Simon 1880: 103 — Roewer 1912: 11 ; 1923: 293 . — Mello-Leitão 1923: 108 ; 1926: 331 ; 1932: 53 ; 1933: 105 , 109; 1935: 113. — Kästner 1937: 389 . — Kury 2003: 65 (revalidated) [junior subjective synonym of Vonones Simon, 1879 by Goodnight & Goodnight (1953: 59) ]. Libitia ( Libitia ) – Sørensen in Henriksen 1932: 417. non Libita [subsequent incorrect spelling] – Roewer 1928: 552 . Etymology Obscure, it sounds to us as a Roman woman’s name. Gender feminine. Diagnosis Can be differentiated in having shorter legs (femur IV shorter than the total length of the dorsal scutum) contrasting with other short-legged cosmetids as Rhaucus Simon, 1879 , Neocynorta or Eulibitia (its femur IV is longer than dorsal scutum length) ( Fig. 1B , E–F). Outline of dorsal scutum alpha-type with faint marked constrictions forming a parallel coda in males and divergent coda in females contrasting with Ambatoiella that has well-marked constrictions ( Figs 2 , 6 ). Can be separated from other genera by having cheliceral sockets (invaginations in the anterior margin of the carapace where the basichelicerites fit) shallow, with well-marked lateral quadrangular projections (triangular in Eulibitia , rounded in Rhaucus , bifid in Metalibitia ) ( Figs 2 , 6 ). Posterior margin of DS without yellow stripe (transversal stripe in Eulibitia and some Rhaucus species) ( Fig. 1 A–D). Basitarsomeres I, III and IV remarkably enlarged in males ( Figs 1B , 5B, D , 9 C–D). Penis with an elongate wattle in stylus forming distally two long serrate membranes and with a medial cleft ( Fig. 5 ), without stylar barbs. Description Small and flat animals (< 4 mm ) with short legs ( Fig. 1B ). Outline of dorsal scutum alpha-type with symmetrical mid-bulge ( Fig. 2 ). Mesotergum flat and unarmed. Scutum with yellowish white blots as a ‘ladder mask’ over dark brown background (see Medrano & Kury 2016 , 2017 ), with intraspecific variation from absent ( Fig. 2 ) to strongly filled invading the entire area I and II ( Fig. 6 ) or part of carapace ( Fig. 9A ). Coxa IV entirely visible in dorsal view, without groin warts (defined in Kury & Barros, 2014 ) and small prodorsal distal apophysis. Femur III and IV curved and uniformly tuberculate ( Fig. 1B ). Penis ( Fig. 4 ): ventral plate (VP) sub-rectangular with latero-apical borders protruding from the ventral plate, stylus with an incrassated wattle forming apically two long serrate membranes creating a medial cleft ( Fig. 4D ), without stylar barbs. VP laterally with two pairs of MS A, two pairs of MS C (sometimes asymmetrical with 3 MS C on one side, as in L. bipunctata and L. gandalf sp. nov. ), two pairs of MS D (D1 three times longer than D2), and ventrally with two pairs of MS E and one pair MS B ( Fig. 4C ). Note As no diagnostic differences have been found among the penes of each of the four species, no specific descriptions are made. Included species Libitia cordata ( Gervais, 1844 ) , Libitia bipunctata Sørensen, 1932 , Libitia gandalf sp. nov. and Libitia iguaque sp. nov. Geographic distribution Central part of Eastern Cordillera of Andes from 2600 to 3700 meters, in Cundinamarca , Boyacá and Meta departments of Colombia .