THE HEMIPTEROUS FAUNA Forest Associations Primitive Forest: The Hemiptera of the deep woods associa tion are limited in number of species, but consist of rather dis tinctive forms and some of them quite closely restricted to such environments. An excellent example of pristine conditions is found on state land across the Oswegatchie River from the Ranger School. This tract includes untouched virgin forest of great age and dominated by some of the largest and most magnificent pines of the Adirondacks.
The tree tops, of course, were far beyond our reach, but they may be expected to support many of the insects common to the same trees on the lower stratum of vegetation. The lower stratum consisting of seedlings of the principal forest trees, white pine, spruce, balsam, hemlock, yellow birch, hard and soft maple, beech, wintergreen, ferns, etc., furnished a habitat of quite special features, the most important being a deep bed of forest leaf-debris, humid atmosphere, and almost complete lack of direct sunshine. In this habitat the most frequent Homoptera were Euptcryx fiavo scuta, E. nigra, E. vanduzei, Thamnotettix waldanus, Grapho cephala coccinea and Gypona octo-lineata, with an occasional Oncopsis fitchi and 0. variabilis, the latter two possibly straggler drifted down from the more favorable conditions of the tree tops. An aphid, Harm aphis sp., was rather common on yellow birch. The Heteroptera were represented particularly by Miridae — Lygus pabulinus, Dicyphus agilis, D. vestitutus, Macrolopus, sepa rates, Diaphnidia capitata, D. pellucida, Phytocoris lasiomerus,. Molanocoris filicis, and Camptobrochys borealis — and a few other forms such as Corythucha pallipes, Nabis rufusculus, N. roseipen nis, Saldula interstualis and Micranthia humitis. • The Saldidae were taken along the bank of a small stream in the deep forest. • Bog Association: The Hemiptera of the bogs, as represented in Big Floating Island, Bean Pond, Forsaith's Bog, included such forms as Euscelis hunzidus, E. instabilis, E. vaccinii, Pldepsius macidellus, Thamnotettix eburatus Aphelonema histrionica, Lac cocera vittzpennis, Nabis limbatus, Ischnorrhynchus geminatus, Phytocoris lasiomerus, Psallus n. sp., etc. Europiella rubida, Plagiognathus fraternus, P. politics, and Camptobrochys lari-colis were collected on larch. The aquatic forms, taken in Bean Pond and a small pond in Big Floating Island, are represented by Gerris rufoscutellatus, G. buenoi, G. marginatus, Notonecta undulate,
Buenoa nzargaritacea, Ranatra anzericana, Microvelia buenoi, Cal licorixa praesuta and Artocorixa scabara.
Swamp Association: The swamp meadow association included especially Draeculacephala noveboracensis, D. manitobiana,'Tha,m notettix decipiens, T. ciliates, T. placidus, .Nabis limbatus, Phyta coris sp., Illecomma gilvipes, Stenodema trispinosum, S. vicinum, Trigonotylas ruficornis, Collaria meilleurii, Homaemus aenei frons and several of the forms (aquatics and plant-feeders) listed in the bog association.
Plain Association: The Hemiptera of the Plains included especially Philaronia bilineata, Philaenus lineatus Pubilia con cava, Deltacephalus Laccocera vittipennis, :ffelanarhopala clavata, Thyanta custator, Coenus delius, exaptus var. d. (fide Van Duzee), Ortholomus longiceps, Nysius ericea, Crophius disconatus, Ilnacora malina and Mecomma The latter was common along the trails in moist, shady places in larch thickets. The larch insects (see bog association) were very common in the pure stands of this tree.
Burn Associations: The older burned-over regions (see station number 5) included not only the Hemiptera common to the sur rounding forests and cut-over areas but also many other species feeding upon the transitional, ericaccous and various other native and exotic plants peculiar to the burns, tote roads and small open areas along the trails and about the deserted lumber camps. These open areas and the camp site afforded breeding places for such campestral and caespiticolous species as Deltocephalus inimicus, D. affinis, D. apicatus, D. pascuellus, Agallia sanguinolenta, Acu cephalus albifrons, Bruchomarpha oculta, Liburnia cam pestris, Lygus pratensis obliterates, Lygaeus kalmii angustomarginatus, Nabis rufusculus, N. roseipennis and Triphleps insidiosus. Several examples of comma were taken on the fine grasses in the trails. Sciocoris microphthalmus occurred on the red rasberry bushes and rank vegetation in the small open areas. The fire cherry trees were infested by Typhlocyba obliqua, Psyllia carpinicola, and especially Psyllia 3-maculata; the poplars (Populus trentuloides Michx. and P. grandidentata) by Telantona reclivata, Idiocerus lachrymalis, Macropsis basalis, Empoasca smaragdula, E. viridis, Euschistus tristigmus and Corythucha elegans.