One of the general defining characters of the Heteroptera is the presence of exocrine scent glands. Previously unknown from the prothorax, exocrine glands are generally associated with the metapleura and abdomen. Using both light and scanning electron microscopy, we found evidence for a previously unrecorded exocrine gland, which we refer to as the pronotal gland. In all examined members of the Collartidini and Ploiariolini (Heteroptera: Reduviidae: Emesinae) and the Saicinae (Heteroptera: Reduviidae), we have found the presence of this gland. Such evidence was not found in other examined tribes of the Emesinae. The implications of this novel complex character on the taxonomy of the Emesinae and Saicinae are discussed.

The plant bug genus Orthotylus has undergone extensive insular radiation in the Hawaiian Islands. Based on male paramere structure and dorsal setiferation, at least four major clades appear to be present, each of which has sequentially tracked particular host plant families along the island chain in geological and evolutionary time. In this work, 21 new species of Hawaiian Orthotylus are described, arranged by host plant affiliation. The new species and their host plant associations are as follows: O. pisoniae from Oahu, on Pisonia umbellifera and Pisonia sandwicensis; O. pisonioides, from Hawaii, on Pisonia brunoniana; O. hedyoti from Oahu, on Hedyotis terminalis; O. hedyotiopsis from Oahu, on Hedyotis acuminata; O. hedyoticola from Hawaii, on Hedyotis terminalis; O. psychotriae from Hawaii, on Psychotria hawaiiensis; O. psychotrioides from Hawaii, on Psychotria hawaiiensis; O. psychotricola from Oahu, on Psychotria mariniana; O. coprosmae from Maui, on Coprosma foliosa and Coprosma pubens; O. coprosmoides from Oahu, on Coprosma ochracea; O. ilicis from Maui, on Ilex anomala; O. neoilicis from Hawaii, on Ilex anomala; O. urerae from Oahu, on Urera kaalae; O. pipturi from Hawaii, on Pipturus albidus; O. pipturoides from Maui, on Pipturus albidus; O. pseudotantali from Maui, on Pipturus albidus; O. clermontiae from Hawaii, on Clermontia clermontioides; O. xylosmae from Hawaii, on Xylosma hawaiiense; O. diospyri from Hawaii, on Diospyros sandwicensis; and O. hibisci from Oahu, on Hibiscus arnottianus. Redescriptions are also given for 5 previously described species: O. kanakanus (Kirkaldy) from Hawaii, on Coprosma rhynchocarpa; O. perkinsi Kirkaldy from Hawaii, on Ilex anomala; O. tantali (Perkins) from Oahu on Pipturus albidus; O. iolani Kirkaldy from Hawaii, on Clermontia clermontioides; and O. daphne (Kirkaldy) from Oahu on Xylosma hawaiiense. Shaded dorsal habitus drawings are provided for O. hedyotiopsis and O. psychotrioides. Figures of the male genitalic structures and dis

Papeocoris frontalis n. gen., and n. sp., and Viklundocoris humerosus n. gen., and n. sp., belonging to the New World tribes Nematopodini and Coreini respectively, are described from specimens collected in Peru. An adult dorsal habitus, antenna, and head are illustrated for each.

The Blastopsocus semistriatus species complex is diagnosed and the four known species in the United States and Canada are described, three of them named as new to science. A key to the U.S. and Canadian species is included.

A new species, Olixon atlanticus, is described from a secondary dry forest in Zambrano, Bolívar, Colombia. This species represents the second record of the genus from the Neotropical Region, and is close to O. banksii but can be distinguished by the length of the first flagellomere, the form of the premedian transverse carina of the first metasomal tergum, and by the presence of a weak median longitudinal impression on the second metasomal tergum that ends in a notch. Olixon atlanticus and O. testaceum are the first records of the genus for Colombia. An updated key to the species of Olixon is given. Also we record the genus and species Liosphex varius as new for Colombia.

Detailed descriptions and illustrations of the larvae of Erpetogomphus boa Selys and E. cophias Selys, are provided. Comparison with other larvae of the crotalinus-subgroup (sensu Garrison, 1994) is also included. Both species are easily separable by general body coloration, length and shape of ligula, and details of male's epiproct.

The dryophthorid genus Rhinostomus Rafinesque (=Yuccaborus LeConte, new synonym) is a monophyletic taxon, defined by a combination of the following characters: mandibles exodont, antennal scape passing hind margin of eye, postocular lobes absent, abdominal punctures present, tibiae usually dentate, and third tarsal segment bilobed. It belongs to the pantropical tribe Rhinostomini Kuschel and is comprised of eight species. A cladistic analysis was carried out using 28 characters from external morphology, body vestiture, and male genitalia. The analysis yielded a single most parsimonious cladogram, with 59 steps, consistency index of 0.61, and retention index of 0.75, which was stable to successive weighting. According to this cladogram, the species follow the sequence: R. frontalis (LeConte, 1874) [=R. frontalis sharpi (Casey, 1892), new synonym] new combination, R. thompsoni Vaurie, 1970, R. quadrisignatus (Boheman, 1845), R. meldolae (Pascoe, 1887), R. oblitus (Jacquelin du Val, 1857) plus R. scrutator (Olivier, 1807), and R. barbirostris (Fabricius, 1775) plus R. niger (Drury, 1773).

Records of seventy four species of scarab beetles are summarized from nine of Massachusetts' offshore islands. The scarab fauna of these areas is characterized through a combination of recent collections from over 30 locations on eight of the islands, museum specimens and the literature. Though the bulk of recent collecting effort has been devoted to the islands of Martha's Vineyard and Nantucket, scattered species records are also collated from Naushon, Nashawena, Pasque, Tuckernuck, Muskeget, Penikese, and Cuttyhunk Islands. With 56 documented species, Martha's Vineyard, the largest of the islands, appears despite sampling bias to support the most diverse scarab fauna, followed by Nantucket, with 46 species. These two faunas account for 71 of the 74 species known from all the islands. A subset of these data consisting of scarabs from 2,700 pitfall trap samples is used to compare species richness and relative abundance at five sites on the two islands under varying degrees of conservation management. Although recent conservation has focused on grassland habitats, these represent a minority of the communities that occurred historically on these landscapes, and shrubbier habitats appear to support greater species richness than the less structurally complex grasslands.

New records of five species of batflies (Diptera: Streblidae and Nycteribiidae) on vespertilionid bats are provided from São Paulo State, Brazil.

The 21 reported Chrysomelidae types in the Hunterian Museum were examined. Cassida quadripustulata Fabricius and Chrysomela morio Fabricius were not found in the collection. The specimens of Altica nigripes Fabricius, Chrysomela flavicornis Fabricius, and Cassida discoides Fabricius are not types. Chrysomela decimaculata Fabricius is a Coccinellidae; Chrysomela histris Fabricius is an Erotylidae. The syntypes of Altica anglica Fabricius appear to be lost. The 16 valid types are documented. Chrysomela clavata Fabricius is transfered to Anomoea and synonymized with A. laticlava (Forster).