Abstract

LIRA-RAMOS, Karla Vanessa De et al. New species of Monoctenus (Hymenoptera: Diprionidae) attacks Juniperus flaccida Schltdl. (Cupressaceae) in Guerrero, Mexico. Rev. mex. de cienc. forestales [online]. 2022, vol.13, n.69, pp.73-94.  Epub May 09, 2022. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v13i69.1093.

Monoctenus is a genus of sawfly of the Diprionidae family that feed on the leaves of Cupressaceae, mainly Juniperus spp. In 2017, Monoctenus sp. was detected, attacking white cedar in 420 ha in Ixcateopan de Cuauhtémoc, Guerrero. In order to know its biology, and to determine whether it was one of the species already recorded for this genus, its phenology was followed during one life cycle, and tests were carried out for molecular identification. In the field, the adults were observed from July to August, while larvae appeared in July-September; the formation of the cocoons started in October, and pupae were formed until April. Only one generation occurs per year, and the species differs from the others in the maculation of the adult face (M. sanchezi) and the length of the rami on the antennae (M. sadadus). Enough information was obtained to consider it as a new species, named Monoctenus cuauhtemoci n. sp. in honor of the Aztec emperor.

Keywords : Phylogenetic tree; white cedar; phenology; Monoctenus cuauhtemoci n. sp. De Lira; 2021; sawfly; molecular tests.