Oscar Ángel Sánchez-Flores

Descripción de Una Especie Nueva del Género Aleuropleurocelus1 de México

Resumen. Se describe e ilustra a Aleuropleurocelus guerrerensis Carapia y Sánchez sp. nov., encontrada en Acapulco, Guerrero y Ayala Morelos, México en hojas de Ficus insipida Willd y Ficus crocata (Miq.) Miq. La presencia de esta mosca blanca es muy común en arboles de Ficus conocidos como amates, se alimentan succionando la savia de estos y las secreciones azucaradas provoca el desarrollo de fumagina aunque el grado de daño no ha sido evaluado. La descripción de esta especie pretende contribuir al conocimiento taxonómico del género Aleuropleurocelus.

Descripción de Dos Especie Nuevas del Género Aleuropleurocelus1 de México

Resumen. En este estudio se describen a Aleuropleurocelus annonae Carapia-Ruiz y Sánchez-Flores sp. nov., encontrada en los estados de Morelos en hojas de Annona reticulata L., y a Aleuropleurocelus guazumae Carapia-Ruiz y Sánchez-Flores sp. nov., encontrada en el estado de Guerrero, en el envés de hojas de Guazuma ulmifolia Lam. Se proporcionan fotomicrografías de estructuras morfológicas de puparios, y se discute la separación con otras especies elípticoovales de Aleuropleurocelus.

Moscas Blancas1 y sus Plantas Hospederas en Tepeaca, Puebla, México

Resumen. Se determinaron 17 especies de moscas blancas de Tepeaca, Puebla, México, se consideran especies plagas Aleurothrixus floccosus, Bemisia tabaci, Paraleyrodes minei, Singhiella simplex, Siphoninus phylireae, Trialeurodes vaporariorum, y T. abutiloneus.

A New Species of the Genus Encarsia1, Parasitoid of the Whitefly Aleurodicus rugioperculatus Martin2 in Mexico

Abstract. Encarsia fernandae Sánchez & Myartseva, sp. nov., parasitoid of the whitefly Aleurodicus rugioperculatus Martin, 2004, collected on Persea americana Mill. in Puebla, Mexico is described. A key for the identification for females of the genus Encarsia (noyesi group) of Mexico was prepared. A new junior synonym for Encarsia noyesi (Hayat) (=Encarsia narroi Gómez y García) was proposed.

The Whitefly Tetraleurodes perileuca (Cockerell) (Hemiptera: Aleyrodidae) in Mexico and the First Record of its Parasitoid Amitus granulosus MacGown and Nebeker (Hymenoptera: Platygastridae)

Whiteflies (Hemiptera: Aleyrodidae) are important members of ecological communities and primary pests of agriculture worldwide (Naranjo and Ellsworth, 2005; Asiimwe et al., 2013). Knowledge of the whiteflies and their natural enemies is essential for a better understanding of whitefly population fluctuation and regulation, and in biological control projects. During a survey of whiteflies on oak trees (Quercus spp.: Fagaceae) in Mexico, infested leaves were collected at selected localities of the Mexican states of Coahuila, Puebla, Tlaxcala and Queretaro, and in Mexico City, from January to December of 2016. Infested leaves were placed in petri dishes lined up with slightly moistened filter paper, and incubated for four weeks under laboratory conditions at room temperature (24–27◦C) under a 12 hr daily photoperiod, in order to obtain emerging whitefly adults and/or their internal parasitoids. Additional nymphs and pupae of whiteflies and of parasitoids were prepared for observation on permanent slides following the methodology given by Martin (1987). Identification of whiteflies was conducted using Carapia-Ruiz et al. (2016). Parasitoids mounted on permanent slides (Martin, 1987) were photographed under the compound microscope and identified using MacGown and Nebeker (1978). Nymphs and pupae of Tetraleurodes perileuca (Cockerell) (Fig. 1a) were observed on leaves of the oak species Quercus castanea Née, Q. crassipes Bonpl., Q. pringlei Seemen ex Loes, and Q. rugosa Née from the states listed before (Table 1). This whitefly was abundant and widespread at these localities and at those reported by Carapia-Ruiz et al. (2016). Tetraleurodes perileuca is a little-studied species and it was recently reported from Mexico City and the state of Queretaro on Citrus, avocado (Persea), guava (Psidium) and oak trees (Carapia-Ruiz et al. 2016). This whitefly species was reported as Tetraleurodes perileucae (sic) feeding on oak leaves in Galveston, Texas, USA (MacGown and Nebeker, 1978). Several T. perileuca pupae on leaves of Q. pringlei were parasitized by solitary endoparasitoids identified as Amitus granulosus MacGown and Nebeker (Hymenoptera: Platygastridae) (MacGown and Nebeker, 1978) (Fig. 1b-d). Both, parasitized and non-parasitized pupae presented a dark-blackish color (Fig. 1a). This parasitoid was collected only at Cañon de San Lorenzo, Saltillo, Coahuila (coordinates 25◦20′04′ ′N, 100◦58′36′ ′). From the 15 T. perileuca nymphs collected in this locality, seven (47%) were parasitized by A. granulosus as determined by parasitoid emergence in the laboratory. Previously, this wasp had been reported only from North America north of Mexico, from the same whitefly species as host (MacGown and Nebeker, 1978). Among species of Amitus from the Americas, A. granulosus (Fig. 1b-d) is clearly identified by the short, oblique process on the fourth antennal segment of males (Fig. 1d; compare to figure 4 in MacGown and Nebeker, 1978). The aforementioned segment thus looks like a “mitten” (Fig. 1d). This species possesses also a vertical carina originating at the antennal base and extending more than halfway to the frons. Also, the mesonotum and scutellum are covered with abundant scales (Fig. 1c) (MacGown and Nebeker, 1978); however, this character may be shared with some other Amitus species (see figures in MacGown and Nebeker, 1978). Including this new record, there are five species of Amitus reported from Mexico (MacGown and Nebeker, 1978; Carapia-Ruiz et al., 2009). Table 2 is a list of Amitus species and their main whitefly hosts reported in this country. Acknowledgment