Two new species of the genus Paramitraceras Pickard-Cambridge, 1905 (Opiliones: Laniatores: Stygnopsidae) from Chiapas, Mexico.
Parainitraceras pickardcanibridgei sp. nov. and Paramitraceras tzotzil sp. nov. from Chiapas, Mexico are described based on specimens previously determined as Paramitraceras granulatum Pickard-Cambridge, 1905 by Goodnight and Goodnight. The male genitalia of the new species and P. granulatum are illustrated with scanning electronic micrographs (SEMs) or drawings derived from them. The importance of the ocular tubercle, cheliceral dentition and sexual dimorphism, pedipalpal armature and male genitalia as taxonomic characters within the genus is discussed as well as differences and similarities between Paramitraceras Pickard-Cambridge, 1905 and its most similar genus, Sbordonia Šilhavý, 1977.
Colección Nacional de Arácnidos, Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México. 3er. Circuito exterior s/n. Apartado Postal 70-153, C.P 04510, Ciudad Universitaria, Coyoacán, Ciudad de México, Distrito Federal, México. thelyphonidito@gmail.com
Jesús A
JA
Cruz-López
Oscar F
OF
Francke
D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001097:Arachnida / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D049628:Body Size; D005260:Female; D008297:Male; D008800:Mexico; D009929:Organ Size