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On October 5, 2021, mosquito collections were conducted in Nuevo León in search of an undescribed species within the genus Wyeomyia reported previously in this state. Species collected included Aedes quadrivittatus, Ae. amabilis, Ae. triseriatus group, Ae. albopictus, and Wy. mitchellii. Although the undescribed species was not found, the occurrence record for Wy. mitchellii in Nuevo León constitutes the 1st record for this species in this state. Additionally, historical records of the presence of Wy. mitchelli in Mexico, available in the literature, were reviewed and updated. Specimens collected during this study were deposited in the Culicidae Collection of the Parasitology Department, Autonomous Agrarian University Antonio Narro, Laguna unit. With the addition of Wy. mitchellii to the mosquito fauna of Nuevo León, there are currently 67 species in the state.

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Collections of mosquitoes were conducted for the surveillance of species of medical importance in the state of Morelos, Mexico, in June 2017. Species collected included Mansonia (Mansonia) dyari, which was identified using morphological characters and cytochrome c oxidase I DNA barcoding. Although 3 species of genus Mansonia have been previously reported in Mexico, this is the 1st confirmed record of Ma. dyari in Morelos State, where no Mansonia species had been recorded. Historical records of Ma. dyari and Ma. indubitans in Mexico were reviewed. Therefore, this record increases the number of mosquito species occurring in Morelos to 46. The specimens collected in this study were deposited in the Culicidae collection of the Universidad Autónoma Agraria Antonio Narro, Unidad Laguna.

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Mosquitoes are the most important arthropods from the point of view of public health, due to the fact that they can transmit a large number of pathogens which can cause diseases to humans and animals. Aedes aegypti (L.) is one of the most important vector species in the world, since it can transmit numerous pathogens such as dengue, Zika, and chikungunya. Therefore, studies involving the molecular aspects of this and other mosquitoes species are currently increasing. In this report, we describe the comparison between two DNA extraction techniques, Chelex and cetyltrimethylammonium bromide (CTAB), for carrying out DNA extraction in larvae, pupae and adult female of Ae. aegypti. The Chelex technique was superior in the amount and purity of DNA as compared to the CTAB technique in the three life stages we tested.

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During August-November of 2018, mosquito collections were conducted with the intention of monitoring the presence of arboviruses in Durango State, Mexico. Species collected included Psorophora (Janthinosoma) ferox. In Mexico, 24 species of the genus Psorophora have been previously reported, whereas in the state of Durango, only 2 species have been reported: Psorophora (Grabhamia) columbiae and Ps. (Gra.) signipennis. This is the 1st record of Ps. ferox and the subgenus Janthinosoma in Durango. With the addition of Ps. ferox to the list of mosquito species found in Durango, the number of mosquito species occurring in the state stands at 31.

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To document the diversity and distribution of mosquito species inhabiting the Mexican state of Tamaulipas, collection trips were conducted to all physiographic regions (Grand Northamerican Plains, Coastal Plain of North Gulf, and Sierra Madre Oriental) and subregions across the state. Additionally, we re-examined mosquito specimens in two Mexican entomological collections: the Collection of Insects and Mites of Medical Importance and the Collection of Arthropods of Medical Importance. In total, 3,931 specimens were collected. These represent the two Culicidae subfamilies Anophelinae and Culicinae, 10 tribes, 17 genera, 27 subgenera, 80 named species, and 2 undescribed species. Of these, 3 tribes, 6 genera, 7 subgenera, and 20 species are new records for the mosquito fauna of Tamaulipas. Fourteen species recorded in the historical records were not found in collections made for this study. Taxonomic notes, new distribution limits, and comments about the medical importance of some of the species collected are reported.

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Aedes brelandi Zavortink is reported for the first time outside of the United States, where it has been found in northern and central parts of Mexico. Ae. triseriatus (Say) is reported in northern and central Mexico and Ae. zoosophus Dyar and Knab is recorded in southern Mexico. Collection records for these species in northern, central, and southern Mexico showing the current distribution of the Aedes Triseriatus Group are included.

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El propósito de este estudio fue investigar si existen cambios en la posición de las estructuras esqueléticas del complejo cráneo-cervical posterior a un tratamiento de cirugía ortognática. Se revisaron 30 expedientes de pacientes con maloclusiones esqueléticas iniciales de clase I, II, y III que fueron sometidos a cirugía ortognática. Se midieron las posiciones pre y posquirúrgicas de las vértebras, hioides y rotación de cráneo en la radiografía lateral de cráneo. Se encontró que los pacientes sometidos a cirugía combinada presentan mayor proporción de cambios de rotación de cráneo en sentido posterior (p = 0.006) y en las mujeres se presentó una tendencia a la rotación posterior de cráneo con la disminución en la distancia del atlas a la base de cráneo (p = 0.23). Es importante reconocer estos cambios de rotación de cráneo en los pacientes quirúrgicos ya que pueden ocasionar recidiva de la cirugía ortognática y/o cefalea occipital.

The aim of the present study was to conduct research on presence of changes in skeletal structures' position of the cervical-cranial complex after treatment involving orthognatic surgery. 30 patient files were reviewed. Patients were afflicted with initial class I, II and III malocclusions which had been treated with orthognathic surgery. With the help of lateral skull X-rays, measurements were taken of pre- and post-surgical positions of vertebrae, hyoid bone, as well as skull rotation. It was found that patients subjected to combined surgery presented greater range of skull rotation changes in a posterior direction (p = 0.006). Female patients presented tendency to posterior skull rotation, and exhibited distance decrease from atlas to skull base (p = 0.23). In surgical patients, it is important to timely identify these skull rotation changes since they might elicit relapse of performed orthognathic surgery and/or occipital headache.

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This is the first report of an ongoing research to establish a sarcosaprophagous arthropod database in the Coahuilan semidesert. Seven pigs (Sus scrofa L.) were used as human models to determine succession in an open urban area during the 2007 winter-spring period. Arthropods were collected manually and from pitfall traps. Carcass biomass loss, as well as arthropod colonization, was recorded during 71 days postmortem. Five decomposition stages were identified during which most abundant orders were found to be Diptera, Coleoptera, and Hymenoptera. Lucilia sericata (Meigen), Chrysomya rufifacies (Macquart), Necrobia rufipes (DeGeer), Dermestes maculatus (DeGeer), Pheidole hyatti Emery, and Pogonomyrmex rugosus Emery stood out as dominant species.

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The loss of the maxilla is a severe mutilation resulting from inadequate surgery of bilateral clefts of the lip and palate. It is usually associated with palatal fistulae, collapse of the maxillary segments, and limited facial growth.Functional rehabilitation can be achieved by reconstruction of the premaxilla with osteomucosal fibula grafts. Mucosal grafts are fixed to the fibula in a preliminary stage. The composite graft is transplanted to the maxilla 10 to 12 weeks later. Osteointegrated implants are placed 3 months later.The procedure was used in 7 patients, 1 holoprosencephaly and 6 with sequelae of bilateral clefts; mean age, 17.28 years, with a follow-up of 14 to 70 months.The mucosal grafts integrated successfully to the fibula in all the patients. The osteocutaneous graft achieved a solid maxillary arch in all the patients. Normal mastication was achieved with a prosthesis fixed to the osteointegrated implants. Facial proportions were greatly improved.

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La formación de sinequias entre la pared posterior de faringe y el paladar, como consecuencia de una cirugía u otra agresión es una complicación poco frecuente; cuando se presenta, ocasiona estenosis parcial o total de la unión rino-orofaríngea, provocando bloqueo de la vía aérea superior y dificultad para la deglución. Se ha intentado resolver este problema mediante diferentes tipos de cirugía, sin embargo los resultados no siempre son buenos, y la tasa de recidiva es alta. En este trabajo se presenta un aparato protésico de dos piezas, que combinado con cirugía de liberación de las sinequias, reestablece el espacio del istmo de las fauces

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Se presenta el caso de una paciente femenina de 41 años con osoficación de los ligamentos estilohioideos (síndrome de Eagle), que simulaba dolor en la articulación témporo-mandibular. Esta es una patología que se presenta entre el 1 - 4 por ciento de la población en general, pero solo un número muy pequeño de estos se llegan a reconoer, ya que puede ser asintomáticos o presentar diversas manifestaciones clínicas. Se hace una revisión del tema

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