-Twenty one species of the scale insects on fruit plants from Argentina are discussed in this paper. A key for the recognition of the species, as well as the synonymy, morphological characterization, and illustration are also included. Data on economic importance and host plant are provided. Diaspidiotus ancylus Putnam is recorded for the first time from Argentina and Crenulaspidiotus lahillei (Lizer y Trelles) is redescribed in this paper.KEY WORDS: Scale insect, neotropical, key RESUMEN -Se registraron 21 especies de cochinillas Diaspididae sobre plantas frutales en la Argentina; se presenta una clave para el reconocimiento de las especies, así como la sinonimia, caracterización morfológica e ilustración de las mismas y datos de las plantas huéspedes e importancia económica. Diaspidiotus ancylus Putnam es citada por primera vez para la Argentina y Crenulaspidiotus lahillei (Lizer y Trelles), es redescripta en el presente trabajo.
The gregarious species of Apanteles that attack cactus-feeding phycitine moths (Lepidoptera : Pyralidae) from Argentina are identified using DNA barcodes and morphological data. Sequences of specimens from 10 different populations were generated. Corrected genetic divergences showed two clusters of specimens separated by COI divergences higher than 6%. Our morphological examinations were congruent with the molecular evidence and therefore two species were confidently identified: Apanteles alexanderi Brèthes and a new species, Apanteles opuntiarum Martínez & Berta, sp. nov., which we describe and illustrate. Despite these two taxa being considered to represent a single polyphagous species for at least 50 years, they can be easily distinguished by the length of their ovipositor sheaths. A key to the species of microgastrine parasitoids of cactus-feeding Lepidoptera in South America is provided. The recognition of the new species reveals a narrower host range for the species involved in this system, making it necessary to re-evaluate their potential as biocontrol agents of the prickly pear moth.
ABSTRACT. The Dactylopiidae and Diaspididae (Hemiptera, Coccoidea) of the Kenneth Hayward Collection, Tucumán, Argentina. The Kenneth Hayward collection housed at the Instituto Miguel Lillo (IMLA) and at Estación Experimental Agroindustrial "Obispo Colombres" (EEAOC) both in Tucumán, Argentina, was studied. Four Dactylopiidae and 32 Diaspididae species with their host plants are listed. Duplaspidiotus koehleri Lizer y Trelles and Pallulaspis lantanae Green & Laing, are redescribed and illustrated; the two species were originally described from Argentina. The genus Rugaspidiotus Mc Gillivary is recorded for the first time from Argentina.
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