We describe and illustrate the life history and immature stages of Anthonomus monostigma Champion (Curculionidae: Curculioninae: Anthonomini). This weevil is a fruit borer in Miconia calvescens DC (Melastomataceae), a Neotropical tree that is invasive in Pacific islands. The larva has three instars, and development from egg to adult requires approximately two months. In Costa Rica, A. monostigma larvae were found in three Miconia species, and adults fed only on Miconia species. Host relationships of the A. monostigma group suggest that this group could be related to the A. partiarius and A. albocivitensis groups (sensu Clark 1992, 1993b). The potential of A. monostigma as a biological control agent is discussed.

The Mongolian Aquatic Insect Survey (MAIS) has systematically surveyed a diverse range of aquatic habitats in Mongolia during the summers of 2003–2006 and 2008–2010. Nymphomyiidae were collected from three sites in the northern Altai region of Mongolia in 2008 and 2010. Collection of this rare family of aquatic Diptera prompted a search through specimen data generated by the MAIS project and by other aquatic ecology projects in Mongolia resulting in a database of 375 sites which had specimens identified to family. No additional nymphomyiid specimens were found, indicating that these flies are rare in Mongolia. Our three sites represent unique, semi-arid and tundra habitats for Nymphomyia. The sites also extend the range of Nymphoymia into central Asia forming an important biogeographic link between extant eastern Palearctic and extinct western Palearctic nymphomyiids.

Aedes dufouri Hamon, heretofore placed in the subgenus Levua Stone and Bohart, is transferred back to the subgenus Ochlerotatus Lynch Arribalzaga, where it is placed in a new monotypic lineage, the dufouri group, based on a morphological assessment of characters of specimens, including the type species, Aedes (Levua) suvae Stone and Bohart, 1944, from Suva, Fiji. Aedes fryeri (Theobald) was previously removed from the subgenus Levua (Huang et al. 2010). Thus, no members of the subgenus Levua (genus Aedes Meigen) are now known to occur in the Afrotropical Region. The female and the male genitalia of Ae. dufouri are redescribed and illustrated, and the dufouri group is diagnosed. Some morphological characters of adult males and females, as well as larvae, of the subgenera Ochlerotatus and Levua (genus Aedes Meigen) are tabulated.

One new species of the aphid genus Macrosiphum Passerini is described from the Pacific Northwest of North America. Macrosiphum opportunisticum n. sp. lives on a diverse range of shrubs mostly in mountainous habitats, without host alternation. The alate vivipara of Macrosiphum parvifolii Richards is briefly described, and the host range and biology of this species is discussed. The life cycle of Macrosiphum tolmiea (Essig) is reported to be holocyclic with notes on the morphology of the fundatrix. Macrosiphum kiowanepus (Hottes) is declared a junior synonym of Macrosiphum valerianae (Clarke) syn. nov. with notes on biology, host plants, and diagnostic features of the species.

Lacuniola Park, n. gen. and Crinellus Park, n. gen. from New Guinea are described and illustrated. Lacuniola is distinguished from its putative relatives by the basal part of the male antenna with an unusual, elliptical swelling forming a deep concavity on the mesal surface, two long rows of androconial scales in the discal cell of the male hind wing, and a concave termen in the male hind wing. Crinellus is distinguished by the specialized labial palpus with segment II having hairlike rough scales ventro-apically and segment III rodlike, a long row of androconial scales in the discal cell of the male hind wing, and the unique structure of the male genitalia. Adults, labial palpi, wing venation, and male genitalia are illustrated.

Zadipion ojedae Smith and Sánchez-Martínez, n. sp., reared from larvae feeding on Pinus durangensis Martínez in Chihuahua, Mexico, is described, and notes on its life history are provided. Hosts, distributions, and remarks on the other five species of Zadiprion are given, and the females, ovipositors, and male genitalia of all six species are illustrated. An identification key is given for all species.

Rhyssa crevieri (Provancher), a primary parasitoid of Siricidae wasps, and the Holarctic poemeniine ichneumonid, Pseudorhyssa nigricornis (Ratzeburg), a cleptoparasitoid of Siricidae via its parasitoids (Ichneumonidae: Rhyssinae), were reared from two stands of Scots pine (Pinus sylvestris L.) and red pine (P. resinosa Ait.) infested with the exotic siricid Sirex noctilio F. near Tully (Onondaga Co.), New York, in 2010. Previously, P. nigricornis has been recorded from the primary siricid parasitoids Rhyssa persuasoria (in Europe and North America) and R. howdenorum Townes and Townes and R. lineolata (Kirby) (in North America). Peak emergence of P. nigricornis occurred in early May concurrently with R. persuasoria and R. crevieri. A second peak occurred in late May, which overlapped peak emergence of R. lineolata and Megarhyssa nortoni (Cresson). Although 14 individuals of two native siricids, Sirex nigricornis F. and S. edwardsii Brullé, emerged from sampled trees, the number of S. noctilio recovered was far higher (372), suggesting cleptoparasitism of the exotic woodwasp rather than native siricids. Approximately 26% of rhyssine parasitoids in pine stands were cleptoparasitized by P. nigricornis. This study marks the first association of R. crevieri and P. nigricornis with S. noctilio in North America. A diagnosis, color images of characters, and a key are provided to aid in the identification of all parasitoids in this study.

Heza gilsantanai Bérenger, 2007 is designated a junior synonym of Loboplusius repandus Bergroth, 1909 (New Synonymy). The evidence supporting this conclusion is discussed.

Gracilimiris litoralis Stonedahl and Henry is an infrequently collected mirine plant bug previously recorded from a total of 14 locales in Florida, Maryland, Mississippi, North Carolina, and Texas. It is newly reported from Alabama, Georgia, and South Carolina, with additional records given for Florida, Mississippi, and Texas. Although adults have been taken on cordgrasses, Spartina species, the bug's host-plant relationships have remained undocumented. During extensive sampling of spartinas and other grasses in the southern United States, I found nymphs of G. litoralis near the coast and inland only on three species of Spartina: sand cordgrass (S. bakeri), saltmeadow cordgrass (S. patens), and gulf cordgrass (S. spartinae). The mirid was not observed on two less architecturally complex species, big cordgrass (S. cynosuroides) and smooth cordgrass (S. alterniflora). Seasonal history of G. litoralis was followed from 2002 to 2010 (19 visits) by periodically sampling an inland colony of sand cordgrass near Avon Park (Highlands County) in the Lake Wales Ridge of the Florida peninsula. The presence of early instars in November, December, February, and March suggests that reproduction continues during winter. The presence of adults in all months of fieldwork (January–July; November, December), coupled with published records of adults from August to October, suggests that the bug is multivoltine.