Nymphs and adults of the bed bug, Cimex lectularius L,. have compound eyes located on protrusions from the lateral area of the head. In this study, nine specimens from each nymphal instar, and ten adult males and females were examined by scanning electron microscopy to count and measure the ommatidia through the various developmental stages. Ommatidia making up the nymphal and adult eye were found to be round-to-oval and strongly convex. Numbers of ommatidia in the compound eye differed significantly between each nymphal instar and adults of both sexes; however, there was no significant difference in number of ommatidia between females and males. Ommatidial diameter in the first three instars ranged from 24.10 µm to 28.55 µm, whereas this range was much greater in later instars and adults, 20.35 µm – 30.15 µm. Diameters of the largest ommatidia ranged from 29.80 µm to 30.15 µm, and this size range was found on all nymphal instars and adults. The surface of the ommatidia was found to be smooth and without inter-ommatidial setae. The 6.5x increase in number of ommatidia from nymphal instar one to the adult stage is distinctly less than that found in other members of the Hemiptera. A linear relationship exists between width of the pronotum and number of ommatidia found in each nymphal instar and adults.

The acanthosomatid genus Tolono Rolston and Kumar is revised. The generic description is modified slightly to accommodate the two new species described herein: Tolono confusus n. sp. is described from Ecuador and Colombia and T. pallidus n. sp. is described from Colombia. The first host plant record, Baccharis floribunda (Ruiz and Pav.) (Asteraceae), is provided for T. pallidus. A key for the identification of the species is provided.

The genus Decarloa (Naucoridae: Laccocorinae) is monotypic and endemic to the island of Hispaniola. Other than its inclusion in a catalog of the Naucoridae, nothing concerning it has been published since the original description. Recently, adults and second through fifth instars of Decarloa darlingtoni La Rivers were collected from Armando Bermudez National Park in the Dominican Republic. All specimens were collected from submerged rocks near the margin of a stream. Females have forelegs with a one-segmented tarsus and paired, articulated pretarsal claws; a pronounced lobe at the middle of the posterior margin of laterosternite V; and a subgenital plate with paired longitudinal carinae near the apex. The nymphal instars can be distinguished from one another based on overall size and relative length of the mesonotal wing pad compared with the exposed part of the metanotal lateral margin.

Four treehopper species described as members of the tribe Telamonini from South America are here assigned as follows: the Colombian species Alchisme ruficarinata (Fowler), n. comb., with n. syn. A. insolita Creão-Duarte & Sakakibara (Membracidae: Membracinae: Hoplpophorionini); Telamona celsa Goding, apparently mislabeled, is placed as a reinstated syn. under T. monticola (Fabricius). The current placement of Heliria praealta Fowler and Telamona turritella Buckton as its junior synonym is confirmed; both were described from specimens originating from Quebec, not Brazil.

The new colobathristid genus Neolabradoria and new species N. inexpectata are described based on a specimen from Pachitea Province, Peru, and the new name Bradaloria is proposed for the preoccupied genus Labradoria Kormilev, 1951. A revised key to the 14 Neotropical colobathristid genera is provided.

Kisutam rosemary Thompson & Robbins, new species, is described in subtribe Calycopidina from montane forest (2000 m) along the road from Boquete to the summit of Volcan Barú, Chiriquí, Panama. The species is also recorded from Cerro Totuma (Chiriquí) and from Volcan Poas, Costa Rica. Genus Kisutam now contains two allopatric Central American montane species (K. rosemary, K. micandriana) and one widespread, primarily lowland species (K. syllis). The larval food of K. rosemary is unknown, but is presumed to be forest floor detritus, as is true for K. syllis and for most of the Calycopidina. The genitalia and 8^th abdominal tergum of K. rosemary and K. micandriana are symmetrical and possess brush organs, which modifies the previous characterization of Kisutam.

Originally described in 1902, Megamelanus bicolor Ball is an infrequently collected delphacid planthopper whose host plants have remained unknown. Nymphs and adults were collected on saltgrass, Distichlis spicata (L.) Greene (Poaceae), in the critically imperiled saline wetlands of eastern Nebraska, as well as in alkaline wetlands of western Nebraska. We suggest that the planthopper is a saltgrass specialist. In addition to the new state record of Nebraska, we give other new North American records based on examination of museum specimens: Louisiana, Oregon, South Dakota, Texas, and Wyoming in the United States, and British Columbia in Canada. A diagnosis of M. bicolor and illustrations and photographs of the male terminalia are provided.

Microplax albofasciata (Costa), a Palearctic (mainly Mediterranean) species of the small family Oxycarenidae, is reported from California as the first record for the New World. Adults of this little-known lygaeoid bug were found in 2012 and 2013 at the Hastings Natural History Reservation in northern Monterey County. It is suggested that this immigrant heteropteran arrived from the Mediterranean Basin in shipments of ceramic tiles (or quarry products) and that California’s similar Mediterranean climate aided its establishment. A diagnosis, description, and illustrations are provided to facilitate the recognition of M. albofasciata in the Nearctic Region.