Thomas Emmel

• University of Florida

The Philippines experiences an average of 20 typhoons annually and how they affect the unique biodiversity is still unknown. Data sampling of butterflies between typhoon and non-typhoon seasons in various habitats showed that typhoons may play an important role in butterfly diversity and community changes. The result also showed that land-use chang...

The Homerus Swallowtail, Papilio (Pterourus) homerus, is an endangered butterfly endemic to Jamaica. We report conspecific male interactions observed in the Cockpit Country. Field observations of the patrolling behavior and the conspecific male circular flights suggest that males are territorial. Unlike most previous reports of male butterfly terri...

Abstract The Florida Museum of Natural History's McGuire Center for Lepidoptera and Biodiversity, on the University of Florida campus in Gainesville, Florida, has become one of the world's largest institutions for research on butterflies and moths, and an important research facility for insect science. The facility was constructed by combining the...

In the life cycle of invertebrate animals, the typical life history includes the egg and larval stage, which may be called the pediatric phases, representing development up to the point where the animal reaches adulthood with fully functional reproductive organs and full adult characteristics of morphology, coloration, physiology, and behavior. The...

A biodiversity inventory of the Lepidoptera of Pico Bonito National Park and vicinity, in the Department of Atlantida of northern Honduras, was initiated in 2009 to obtain baseline data. We present a revised checklist of Honduran butterfly species (updated from the initial 1967 lists), as well as the first comprehensive list of Honduran moths. Our...

We describe a method to quantify color in complex patterns on insects, using a combination of standardized illumination and image analysis techniques. Two color comparisons were investigated: (1) the percentage of blue in the submarginal band of the hindwing in yellow and dark morph females of Papilio glaucus L., and (2) the percentage of orange hu...

La mariposa, Phyciodes phaon (Edwards), fue criada en el laboratorio en su planta hospedera, Phyla nodiflora (L.) Greene, a los 27°C con un fotoperíodo de 16:8 (L:D) e iluminación florescente. Los huevos son puestos en grupos en el envéz de la hoja del hospedero y se eclosionan en aproximadamente 5 dias. Las larvas recien nacidas se agregan y se al...

SYNOPSIS The chromosome number of the Australian butterfly Tellervo zoilus , the only representative of the subfamily Ithomiinae outside tropical America, is reported as n = 32. The meiotic metaphase chromosomes and adults of the typical subspecies are illustrated, and the significance of this particular chromosome number is discussed.

Chromosome counts in meiotic metaphase plates in the gonads of 67 of the probable 68 species of mimetic neotropical heliconian butterflies (Nymphalidae), representing 1524 individuals in 617 subspecies and geographically separate populations from southern Texas to northern Argentina, revealed a consistent haploid number of n = 21 in the genus Helic...

This is an 18-year study of the endangered Papilio (Pterourus) homerus, adding substantial information to our scanty knowledge of its ecology. The contraction of a once contiguous but narrow population on a single Caribbean island carries the serious threat of extinction. There are now two populations or probably metapopulations, effectively isolat...

This is an 18-year study of the endangered Papilio (Pterourus) homerus, adding substantial information to our scanty knowledge of its ecology. The contraction of a once contiguous but narrow population on a single Caribbean island carries the serious threat of extinction. There are now two populations or probably metapopulations, effectively isolat...

The associative learning capacity of male and female nymphalid butterflies, Agraulis vanillae, was investigated. Both males and females were conditioned to chemical stimuli of amyl acetate and butyl acetate, but not of host-plant volatile emissions, although our EAG recordings demonstrate that Agraulis can detect host-plant aroma as well as both ac...

The effectiveness of bait trapping is analyzed for the equatorial rain forest butterfly fauna of the Kakamega Forest Reserve in Kenya, East Africa. The advantages and deleterious features of different trap constructions are discussed. The famous wildlife of Kenya is usually associated in one's mind with the big game species of African savanna. Beca...

An unusual population of the lycaenid butterfly, Meleageria daphnis (Lepidoptera: Lycaenidae), is found in the Kislovodsk area (43.8°N lat., 42.7°E long.) of southern Russia; 60% of the observed females in the adult population have been partial gynandromorphs or sexual mosaics during the period of 1988 to 1993. This site is within 30 km of the cent...

Pheromonal volatiles emitted by irradiated and control 5- to 11-day-old Caribbean fruit flies,Anastrepha suspensa (Loew), were collected on Tenax adsorbent filters and quantified by gas chromatography (GC). The components released were identified by comparison of retention times on GC and by mass spectrometry (MS) with authentic synthetic standards...

Chromosome counts in meiotic metaphase plates in the gonads of 67 of the probable 68 species of mimetic neotropical heliconian butterflies (Nymphalidae), representing 1524 individuals in 617 subspecies and geographically separate populations from southern Texas to northern Argentina, revealed a consistent haploid number of n = 21 in the genus Helic...

Sixteen biocides were examined for their ability to inhibit the growth of thiobacilli Biocide A inhibited the growth of T. thiooxidans and biocide B the growth of T. neapolitanus, T. intermedius and T. thiooxidans. Biocides A and B were effective at concentrations of less than 0·001%. Tests with heterotrophic microorganisms resulted in minimal inhi...

A sulphur-oxidizing enzyme was purified to homogeneity from cell-free extracts of mixotrophically grown cells of sulfolobus brierleyi. The enzyme catalysed the oxidation of elemental sulphur to sulphite and had an MT of 560 000. Only one type of subunit (M/r 35000) could be detected. The pH and temperature optima for activity were 70 0-5 and 65°C r...

The chromosome number of the beet armyworm, Spodoptera exigua (Hübner), was determined as n=31 from larvae and adults from northern Florida reared on an artificial medium. All chromosomes are essentially spherical and similar in size.

Chromosome numbers and karyotypic observations are reported for 27 species of neotropical Lepidoptera in 8 families (Satyridae, Ithomiidae, Nymphalidae, Papilionidae, Pieridae, Lycaenidae, Riodinidae, and Hesperiidae) Characteristic haploid numbers for certain genera are found: Parides (N=30 or 31), Phoebis (N=31), Eurema (N=28, 29, 30, or 31). Dyn...

Traducción de: Ecology and Population Biology Contenido: 1) Poblaciones y ecología; 2) Algunos principios básicos de ecología: elementos y energía; 3) Algunos principios básicos de ecología: acciones recíprocas entre los organismos; 4) La organización de las poblaciones; 5) Desarrollo y regulación de la población; 6) La ecología de las comunidades;...

Chromosome numbers and karyotypic observations are reported for 22 species of Hesperiidae (Pyrginae and Hesperiinae) found in southwestern North America. Characteristic haploid numbers for certain genera are found: Amblyscirtes (N=29), Chiodes (N=31), Erynnis (N=30 or 31), Heliopetes (N=29 or 30), Panoquina (N=29), and Wallengrenia (N=28, 29, 30)....

Populations of the daggerwing butterfly, Marpesia berania (Hewitson) (Nymphalidae; Nymphalinae), assemble nightly in roosts of up to 68 individuals in the tropical rain forest of the Osa Peninsula, Costa Rica. Gregarious nocturnal roosting in butterflies in uncommon, and reported almost exclusively in supposedly distasteful species. We studied two...

The widespread neotropical nymphalid butterfly Anartia fatima is dimorphic in both sexes. In Costa Rica the yellow-banded form occurs at higher frequencies in warm lowland environments while the white-banded form predominates in cooler lowland and highland localities. Within these two sets of areas there is considerable stability of morph frequency...

The two California desert Papilio (Lepidoptera: Papilionidae) species, P. indra fordi Comstock & Martin and P. rudkini Comstock, are frequently sympatric in range but mutually exclusive in host plant source. In 1966, optimal rainfall conditions led to a large simultaneous emergence of the adults of both species, synchronizing the growth of the resu...

1) In the Jasper Ridge colony of Euphydryas editha trends in a number of characters reflecting lightness of wing color pattern were shown to be concordant between 1959 and 1964. Three of the four characters chosen to represent this trend continued to be concordant through 1966 at mean value not significantly different from the 1964 level. One chara...

Thesis (Ph. D.)--Dept. of Biological Sciences, Stanford University. Bibliography: leaf 101.

1) Cluster analysis revealed two quite distinct groups among nine measurements of light spots in the dorsal color pattern of the wings. These clusters can be characterized as proximal and distal. Two additional characters belonged to neither cluster. 2) Asymmetry accounts for roughly 8 to 25 per cent of the variation in the 11 characters measured....

A previously unknown mimetic assemblage of the cerambycid Elytroleptus rufipennis (LeConte) and an undescribed lycid species was found on Quercus near Soyalo, central Chipas, Mexico. The behavioral differences between the lycid and its sibling are emphasized as possibly being significant in regard to predator relationships.

The local distribution, flight periods, habitat preferences, larval food plants, adult feeding plants (nectar sources), and adult behavior of 60 species of butterflies are recorded for the Big Spring Ranch area (elevation 8500 to 9220 ft), four miles southwest of Florissant, Teller Co., Colorado. The influence of plant associations as both "barrier...