Zootaxa 3915 (4): 510–520 www.mapress.com /zootaxa / Copyright © 2015 Magnolia Press Article ISSN 1175-5326 (print edition) ZOOTAXA ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3915.4.3 http://zoobank.org/urn:lsid:zoobank.org:pub:2AF12107-798E-47CC-9F99-86D02BE7C26A New species of Lachesilla Westwood in the pedicularia group (Psocodea: ‘Psocoptera’: Lachesillidae) from the Colombian Amazonia OSCAR FERNANDO SAENZ MANCHOLA1, ALFONSO NERI GARCÍA ALDRETE2 & RANULFO GONZÁLEZ OBANDO1 1 Departamento de Biología, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, Santiago de Cali, Colombia. E-mail: [email protected]; [email protected] 2 Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70−153, 04510 México, D. F. MÉXICO. E-mail: [email protected] Abstract Two species of Lachesilla, in the pedicularia species group, from the Colombian Amazonia, are here described and illustrated. Also, a record of L. asymmetriproctus García Aldrete, for the Colombian Department of Putumayo is provided. An identification key to Lachesilla species in the pedicularia group with a single male clunial apophysis is presented, together with a diagnosis of this assemblage of species. A table is included indicating the distribution of Lachesilla species with one and two male clunial apophyses. The species treated in this paper constitute the first lachesillids known from the Department of Putumayo, Colombia. Key words: taxonomy, Neotropics, Putumayo, Lachesillidae, Amazon basin Introduction Lachesilla Westwood is the most species rich genus of ‘Psocoptera’, with over 309 described species (García Aldrete, unpublished); 38 Colombian species remain undescribed, mostly from the Department of Valle del Cauca (González et al., 2013). The species of Lachesilla are presently grouped phenetically in 19 species groups (García Aldrete, 1974; 1982; 1986; 2010; 2011; García Aldrete & Mockford, 2011). The pedicularia species group (García Aldrete, 1974), with over 80 species, is the second richest group of the genus, with distribution mostly pantropical; in about one third of its species, the males have either one or two clunial apophyses. The species with one clunial apophysis are Neotropical, while those with two clunial apophyses (except for the cosmopolitan L. pedicularia) occur in the Aethiopian and Palearctic regions (García Aldrete, 2010). The known Neotropical species are found in the Peruvian Amazonia, and only two species occur in the Colombian Andean forests (García Aldrete et al., 2013). In a ‘Psocoptera’ survey, being conducted in the Department of Putumayo, Colombia, two undescribed species of Lachesilla in the pedicularia group, with a single clunial apophysis were found, together with L. asymmetriproctus García Aldrete, previously known only from the Tambopata Reserved Zone, in the Peruvian Amazonia. The purpose of this paper is to describe and illustrate the new species, to present an identification key to the nine species of Lachesilla in the pedicularia group with a single male clunial apophysis, together with a diagnosis of this assemblage of species, and to provide the record of L. asymmetriproctus from the Putumayo Department. Material and methods 12 specimens were available for study; six males and two females were dissected in 80% ethanol, and their parts (head, right wings and legs, and genitals), were mounted on slides in Canada balsam. Color was recorded by placing whole specimens, before dissection, under a stereoscopic microscope, illuminated with cold white light, at 50X. Parts on the slides were measured, following standard procedures, and the illustrations were made from 510 Accepted by L. Mound: 6 Jan. 2015; published: 5 Feb. 2015 References García Aldrete, A.N. (1974) A classification above species level of the genus Lachesilla Westwood (Psocoptera: Lachesillidae). Folia Entomológica Mexicana, 27, 1−88. García Aldrete, A.N. (1982) The species group “riegeli” of the genus Lachesilla (Psocoptera: Lachesillidae). Diagnosis, records and descriptions of new species. Zoologischer Anzeiger, 209, 196−210. García Aldrete, A.N. (1986) The species group “Patzunensis” of the genus Lachesilla (Psocoptera: Lachesillidae). Anales del Instituto de Biología, Universidad Nacional Autónoma de México, Serie Zoología, 56 (1), 53–72. García Aldrete, A.N. (1988) A new Oriental Lachesilla (Psocoptera: Lachesillidae). 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