Aplicación de técnicas numéricas al estudio sistemático del grupo Asynonychus durius (Germar)

LANTERI, A.; DÍAZ, N.B.; LOIÁCONO DE SILVA, M.S.; COSCARON, M.C.

Ent. Arb. Mus. Frey

Museum G. Frey

Año: 1987 p. 171 - 198

0000-0000

Cluster analysis by 4 different techniques, ordination by Principal Component Analysis (PCA) and Prim network, ate performed on morphological data from 29 characters of 40 females of the Asynonyhcus durius group. The characters studied ate 17 exosomatic and 12 endosomatic, 20 of these ate quantitative , the others 9 are qualitative and have been codified. The resutls of the different techniques agree in general and show that the group includes 5 species: A. tessellatus (Say), A. pallidus (Horn), A. durius (Germar), A. viridipallens Hustache, and A. santafecinus Lanteri sp. nov. All the species ate sympatric in the Buenos Aires province, and their origin is probably anfiploid. Some of the most valuable specific characters are the diameter, length and grade of spiralization of the spermathecal duct. This paper includes also redescriptions of all the species treated, ilustrations of the most important taxonomic structures, and a key to identify the taxa studied.