摘要:

Benthic samples (n = 54) were collected at three sites along an unshaded, first‐order springbrook, 0–3 m, 15–19 m, and 24–27 m below a permanent spring outflow in Mendocino Co., CA, USA. As distance from spring source increased, number of species and species diversity ([Hbar]) decreased, but number of individuals increased. These patterns may have resulted from temperature fluctuation regimes at these three sites, or from a spring source/springbrook ecotone effect. The sericostomatid caddisflyGumaga nigricula(McL.) had highest population density ([xbar] > 10,000/m2) although seven other populations had mean densities > 100/m2. Distribution ofG. nigriculain the springbrook appears to reflect adult oviposition behavior. Zonation patterns and sampling variability in springbrook habitats must be considered in studies that compare first‐order with higher‐order streams (e.g. the River Continuum Concept).

ISSN:0165-0424    

DOI:10.1080/01650428309361145

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Wormaldia occipitalis trifidassp. n. from Western Norway is described based on characters of the male phallus. The phallus of West NorwegianWormaldia subnigraMcLachlan, 1865 is found to differ from British and Continental European specimens also.

ISSN:0165-0424    

DOI:10.1080/01650428309361146

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

MALICKY, H. (1983): Atlas of European Trichoptera/Atlas der Europäischen Köcherfliegen/Atlas des Trichoptères d'Europe.— Series Entomologica 24, XII + 298 pp; Dr. W. Junk Publishers, The Hague, Boston, London; Price 175.— Dfl.

ISSN:0165-0424    

DOI:10.1080/01650428309361147

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

The generic diagnosis forGymnometriocnemusGoetghebuer, 1932 is enlarged and revised and the genus divided into two subgenera,Gymnometriocnemuss. str. andRaphidocladiussubgen. n. with the type speciesGymnometriocnemus (Raphidocladius) acigussp. n. A key to males ofGymnometriocnemusfor the Holarctic region is given. The subgeneric diagnosis for imagines and pupa of the new subgenusRaphidocladiusis presented.Gymnometriocnemus (R.) acigusis described from male, female and pupa and the males ofGymnometriocnemus (Raphidocladius) brumalis(Edwards),Gymnometriocnemus (G.) subnudus(Edwards), andGymnometriocnemus (G.) marionensisSæther are redescribed. The new subgenus is characterized by very long virgal spines in the male, and by a pupa with frontal setae, caudal spines on tergites IV‐VIII, 3 pairs of 0 setae, and hair‐like macrosetae placed on bifid, sclerotized tubercles.

ISSN:0165-0424    

DOI:10.1080/01650428309361148

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Larval and adultPteronarcys scottiRicker were collected from a mountain stream in northwestern South Carolina, USA. The pattern of larval growth indicated a semivoltine life cycle. Emergence occurred in April and early May, and small larvae first appeared in May. Sexual dimorphism in adult size was apparent; males were 0.8 as large as females in head capsule width.

ISSN:0165-0424    

DOI:10.1080/01650428309361149

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Eight new species of Trichoptera from Turkey are described in this paper:Agapetus karabagi, Synagapetus anatolicus, Stactobiella celtikci, Ernodes anatolicus, Psilopteryx turcicus, Drusus demirsoyi, Drusus bayburtiiandDrusus kazanciae.A redescription ofDrusus caucasicusnew faunistic records and examples of the variation of male genitalia of theHydropsyche mahrkushaare given.

ISSN:0165-0424    

DOI:10.1080/01650428309361150

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

A new genus,Laccosternusgen.n. is erected forLaccophilus grouvelleiRégimbart from Sumatra and Vietnam. A key for the identification of the 11 known genera of the subfamily Laccophilinae is provided.

ISSN:0165-0424    

DOI:10.1080/01650428309361151

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

ISSN:0165-0424    

DOI:10.1080/01650428309361152

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

ISSN:0165-0424    

DOI:10.1080/01650428309361144

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor