Description of the Fifth Instar of \u3ci\u3eApache Degeerii\u3c/i\u3e (Homoptera: Fulgoroidea: Derbidae)

(excerpt) Apache degeerii (Kirby) ranges from Maine south to Florida and west to Iowa and Texas; it has also been recorded from British Columbia and Washington (Metcalf 1945. Wilson and McPherson 1980). This derbid has been recorded from oak, beech, maple, and hickory (Swezey 19(4); otherwise no information on its biology is available

Description of the Fifth Instar of \u3ci\u3eEpiptera Opaca\u3c/i\u3e (Homoptera: Fulgoroidea: Achilidae)

(excerpt) Epiptera opaca (Say) ranges from Quebec south to Georgia and west to Ontario and Mississippi; it has also been recorded from British Columbia (Beirne 1950, Wilson and McPherson 1980). This achilid has been associated with pines (Hepburn 1967); otherwise no information on the biology of this species is available. Based on observations of E. fusca (Walker), Hepburn (1967) noted that the immature stages of all species of Epiptera probably live beneath the loose bark of dead trees, presumably feeding on fungal hyphae

Tymbal Morphology and Co-ccurrence of \u3ci\u3eSpartina\u3c/i\u3e Sap-Feeding Insects (Hemiptera: Auchenorrhyncha)

The exoskeletal morphology of the structures associated with the production of substrate vibrations used for communication was examined for members of three guilds of sap-feeding insects on the cordgrasses Spartina alterniflora Loisel, S. patens (Aiton) Muhl., and S. pectinata Link (Poaceae: Chloridoidea). Measurements of the second abdominal sternite and its apodemes, the “tymbal,” were made for the males of 14 species of planthoppers and 2 species of leafhoppers (Hemiptera: Auchenorrhyncha: Caliscelidae, Cicadellidae, Delphacidae, Derbidae). Morphometric comparisons revealed significant differences among the insect species on each of the cordgrass species. If tymbal morphology reflects definitive features of the vibrational signals then coexistence by the members of each sap-feeding guild is likely fostered by partitioning the “substrate resource.” Tymbal morphology may be a valuable tool for determining the presence of sibling species and for providing insights regarding behavior, ecology, and evolution of these insects

On fibrations related to real spectra

We consider real spectra, collections of Z/(2)-spaces indexed over Z oplus Z alpha with compatibility conditions. We produce fibrations connecting the homotopy fixed points and the spaces in these spectra. We also evaluate the map which is the analogue of the forgetful functor from complex to reals composed with complexification. Our first fibration is used to connect the real 2^{n+2}(2^n-1)-periodic Johnson--Wilson spectrum ER(n) to the usual 2(2^n-1)-periodic Johnson--Wilson spectrum, E(n). Our main result is the fibration Sigma^{lambda(n)} ER(n) --> ER(n) --> E(n)$, where lambda(n) = 2^{2n+1}-2^{n+2}+1.Comment: This is the version published by Geometry & Topology Monographs on 27 January 200

Descriptions of Nymphs of \u3ci\u3eItzalana Submaculata\u3c/i\u3e Schmidt (Homoptera: Fulgoridae), a Species New to the United States

The 3rd, 4th, and 5th instar nymphs of ltzalana submaculata Schmidt are described from southern Texas. Previously recorded only from Surinam, this is the first record of this fulgorid from the United States and Mexico

The First Record of \u3ci\u3eDelphacodes Havanae\u3c/i\u3e in the United States (Homoptera: Fulgoroidea: Delphacidae)

(excerpt) Delphacodes havanae Muir and Giffard has been reported from Guyana, Guatemala, Cuba (Muir and Giffard, Bull. Hawaiian Sugar PI. Assoc. 15:1-53, 1924) and Puerto Rico (Caldwell and Martorell, 1. Agric. Univ. Puerto Rico 34:133-269, 1950)