Primer registro documentado de Neodiprion abietis (Harris, 1841) (Hymenoptera: Diprionidae) para México

Abstract

Neodiprion abietis es un dipriónido que tiene una distribución transcontinental en Norteamérica, y se alimenta del follaje de árboles de los géneros Abies, Pseudotsuga y Pinus. Una referencia de 1995 menciona la presencia de esta especie de insecto en México; sin embargo, carece de datos de ubicación. El objetivo del presente estudio fue determinar el taxón de un dipriónido que en 2016 se observó defoliando a Abies concolor, dentro del Área de Protección de Flora y Fauna Campo Verde, en Madera, Chihuahua, México. A través de exploraciones de campo realizadas en 2019, se recolectaron larvas directamente del follaje de sus hospedantes; además, de un adulto en el follaje y varios capullos en el suelo. Las larvas fueron confinadas en jaulas entomológicas y se alimentaron con follaje de sus hospedantes, hasta que tejieron sus capullos. La cría de los insectos se completó introduciendo los capullos a una cámara de crecimiento que se mantuvo a una temperatura de 26 ±2 ºC, con un fotoperiodo de 14:10 luz: oscuridad, hasta la obtención de adultos. La determinación de la especie se realizó mediante la observación de las características morfológicas externas y del ovipositor, basados en claves taxonómicas especializadas e ilustraciones de referencia de fuentes científicas. Los especímenes examinados correspondieron a N. abietis, lo cual confirma su presencia en el norte de México.

Climatic Suitability and Distribution Overlap of Sawflies (Hymenoptera: Diprionidae) and Threatened Populations of Pinaceae

“…This bioclimatic variable has a marked impact on other insect species (i.e., Tryoza erytreae Del Guercio, Anthophora curta Provancher, A. squammulosa Dours) [66,67], indicating its association to environments with contrasting wet and dry seasons. The current distribution of this diprionid indicates there is a disjointed distribution, possibly influenced by sampling bias, with an abundance of records in Canada and the United States [8,12,13], but few in Mexico [14]. However, according to the estimated climatic niche, it may be more widely distributed, and future collection efforts could confirm this prediction.…”

“…For a non-native species, the pathway to reach new geographical areas includes several barriers that must be overcome (geography, captivity/cultivation, survival, reproduction, dispersal, and environment) [20,21]. Neodiprion abietis and Z. rohweri are species with recent records of presence in Mexico [14,18], while N. omosus is endemic to the country [16], which has been confirmed from field observation data. In this study, we estimate the ecological niches of these species as a means to explore the geographical spaces that meet the appropriate environmental conditions for the eventual development of their populations, as well as to estimate the host species that could be threatened.…”

“…Neodiprion abietis (Harris) is a species found in North America [8,12,13], with newly confirmed detection in Mexico [14]. Biological records indicate an annual generation, with no larval and adult activity from October to April in Mexico [14]. A strong local preference for certain hosts has been noted as a limitation of their distribution [15], in addition to the seasonal presence of the active states of this sawfly [12].…”

“…Neodiprion abietis (Harris) is a species found in North America [8,12,13], with newly confirmed detection in Mexico [14]. Biological records indicate an annual generation, with no larval and adult activity from October to April in Mexico [14].…”