Exoteleia dodecella (L.) (Lepidoptera: Gelechiidae), a native of Europe, was first documented from North America at several locations in eastern Canada. Additional records indicate this moth has now spread throughout New England and west to northern Pennsylvania, New York, and possibly into Michigan in the United States. A second introduction of E. dodecella has occurred near the Vancouver area of British Columbia in Canada. To help with the identification of E. dodecella, morphological, biological, and molecular evidence are presented. Key features of the adult, larval, and pupal morphology are compared to other species of Exoteleia and illustrated with line drawings or scanning electron micrographs. The high sequence divergence (>7%) of E. dodecella compared to samples of related native North American species demonstrates that DNA barcodes are a useful identification tool for this pest. A summary of the biology of E. dodecella, including 12 species of larval and pupal parasitoids (most representing new host records), is also included.

Alveoplectrus lilli Gates, new species, (Hymenoptera: Chalcidoidea: Eulophidae) is described and illustrated. This species was reared from five species of field-collected slug caterpillars (Lepidoptera: Limacodidae). It is differentiated from similar species of Alveoplectrus.

During 2004–2007, 1,222 birds comprising 184 species and 540 small mammals comprising 61 species were examined for ectoparasites as part of a broader biodiversity survey and inventory program conducted in Guangxi and Guizhou Provinces in southern China. A collection of 87 fleas was obtained. They included eight species representing seven genera and four families: Dasypsyllus gallinulae gallinulae (Dale), Macrostylophora jiangkouensis Li and Huang (Ceratophyllidae); Palaeopsylla incurva Jordan, Palaeopsylla remota Jordan (Ctenophthalmidae); Nycteridopsylla iae Beaucournu and Kock, Thaumapsylla breviceps Rothschld (Ischnopsyllidae); and Aviostivalius klossi Jordan and Rothschild, and Lentistivalius insolli Traub (Pygiopsyllidae). Illustrations are provided to supplement those in the original description of M. jiangkouensis. The host preference for L. insolli for passerine birds is established with certainty and its derivation and distribution are discussed. The potential impact of predatory ants on flea populations at low elevations in tropical latitudes is considered.

Ectobius lucidus (Hagenbach), a Palearctic cockroach, is reported for the first time from North America. Characters are given to distinguish it from other species of the genus known from eastern North America. Photographs of the adult male and female, and nymphs are provided and contrasted with photographs of adults of other Ectobius species occurring in North America. Its seasonal history and habits are summarized based on field observations, and additional distribution records of other Ectobius species established in eastern North America are listed and mapped.

Uroleucon (Lambersius) escalantii (Knowlton) (syn. nov.) is declared a junior synonym of Uroleucon (Lambersius) erigeronense (Thomas) based on examination of slide mounted material from many hosts and localities, using data from host plant transfers, and DNA sequences. A diagnosis and new information on the host plant biology of the species are also provided.

Published host associations are assessed for Leluthia astigma (Ashmead), Leluthia floridensis Marsh, and Leluthia mexicana Cameron, the three known species of Leluthia Cameron in the Nearctic Region. Leluthia astigma is reported as a parasitoid of Agrilus planipennis Fairmaire, emerald ash borer (EAB), infesting Fraxinus americana L., white ash, in Delaware County, Ohio. It is the first species of Leluthia for which a determined species of Agrilus Curtis has been confirmed as a host and the association vouchered. All other hosts reported in the literature for L. astigma require confirmation through rearing from an isolated host or documentation of an unequivocal host-parasitoid association. Leluthia astigma adults reared from parasitoid cocoons collected in Delaware County, Ohio parasitized and produced F₁ adults in the laboratory on last-instar EAB larvae collected in Ingham County, Michigan. Parasitism of EAB and other natural history data are reported for L. astigma, including the first records of L. astigma from Kansas and New York.

The fossil record of the Prenolepis genus-group is comprehensively reviewed for the first time. Five fossil species are presently known from this clade: Nylanderia vetula, sp. nov. (Dominican amber); Nylanderia pygmaea, comb. nov., Prenolepis henschei and Pseudolasius boreus (Baltic and other contemporaneous amber deposits); and Protrechina carpenteri (Arkansas amber). With the reclassification of Nylanderia pygmaea, it is now clear that the major lineages of the Prenolepis genus-group existed by at least the Eocene.

The nomenclatural history for Pyrrhia aurantiago (Guenée 1852), Pyrrhia cilisca (Guenée 1852), and Pyrrhia exprimens (Walker 1857) is detailed to resolve confusion over the last 150 years concerning those names. Based on characters of the male and female genitalia and coloration and pattern of the fore- and hind wing, Pyrrhia adela Lafontaine and Mikkola 1996 is proposed as a new synonym of Pyrrhia cilisca (Guenée 1852).

The Pocono till barrens ecosystem sustains a large number and high diversity of treehoppers (Membracidae). A total of 6,861 adult oak-feeding treehoppers were collected from sticky cards attached to scrub oak in the Pocono till barrens, in Long Pond, Pennsylvania in 2007 and 2008. Thirty species were collected, dominated by males of Ophiderma definita and Smilia camelus. Glossonotus nimbatulus, apparently restricted to scrub oak, is a noteworthy species in this ecosystem. Cyrtolobus inermis is a NEW STATE RECORD for Pennsylvania. Most treehoppers were trapped in mid-late June, similar to recent studies performed in the nearby Delaware Water Gap National Recreation Area, although the first treehoppers appeared slightly later in 2008 than in 2007. Scrub oak, due to its physical dimensions and ability to support numerous treehopper species, should be considered as a model host tree to study treehopper biology.

Eriocampopsis Takeuchi, 1952, is recorded from China for the first time. The diagnosis of the genus and the differences between Eriocampopsis and Eriocampa Hartig 1837, are discussed. Eriocampopsis acuta Wei and Niu, n. sp., from China is described and illustrated. The genus is known only from Japan, Korea, and northern China. A key is provided for the two known species. Eriocampopsis hakusanus Togashi, 2004, is a new synonym of Eriocampopsis subtruncata Takeuchi 1952.

Syrista Konow includes five species: S. parreyssii (Spinola 1843) from the Mediterranean Region and Near East; S. similis Mocsáry 1904, from Japan and China; and S. xiaoi Wei 2008, S. rufiabdominalis (Wei and Nie 1996), n. comb., and S. incisa (Wei and Nie 1996), n. comb., from China. The lectotype of Syrista similis and holotypes of S. incisa and S. rufiabdominalis are redescribed, and the male of S. xiaoi is described. A key to the five species is presented. Species are shoot borers in Rosa spp. (Rosaceae).

Plant associations for Teleonemia nigrina Champion, a widely distributed Nearctic lace bug, are reviewed, and records that might not represent true host relationships are questioned. To gain a better understanding of the host-plant range of T. nigrina, its hosts were recorded during fieldwork, mainly in the southern United States (62 sites, 12 states), from 1995 to 2009. Plants on which nymphs were observed belonged to the asterid families Plantaginaceae (2 spp.), Scrophulariaceae (5 spp.), and Verbenaceae (7 spp.). Twelve of the 14 plant species represent new host records. The tingid was found most often on Aureolaria pectinata (Scrophulariaceae), Plantago aristata (Plantaginaceae), and Glandularia and Verbena spp. (Verbenaceae). Nymphs were observed on upper and lower leaf surfaces and reproductive structures, with foliar chlorosis evident on the upper surfaces and dark excrement on lower surfaces; severe feeding resulted in the death of Mimulus × hybridus (Scrophulariaceae) in a landscape planting. Irregular sampling of T. nigrina at Clemson, South Carolina, and elsewhere in southeastern states suggests that adults overwinter and that at least two annual generations are produced.

The mealybug Nipaecoccus filamentosus (Cockerell) was described originally as Dactylopius filamentosus Cockerell from South Caicos Island in the Turks and Caicos Islands. It has been listed in error from the Bahamas and from Mexico and the mealybug name wrongly applied to a similar species now known as Nipaecoccus viridis (Maskell). Furthermore, the name Dactylopius filamentosus, as first applied by Cockerell, has been recorded in error from various localities in the Old World because of erroneous synonymy early in the 19th century. The mealybug species N. filamentosus has neither been described nor illustrated adequately since it was first named over 100 years ago and its identity has remained obscure. We now describe and illustrate this mealybug and confirm that it is a local species occurring in the Caribbean area only.