摘要:

Larvae of the anisopteran odonateHadrothemis camarensis(Kirby) were found in water‐containing treeholes, but not elsewhere, in Kakamega Forest, western Kenya, in a site where no ground pools were detected. Treeholes were sampled by siphoning water with wide‐bore, flexible plastic tubing. Larvae were found during four consecutive years of sampling in 46% of treeholes (N=54), and in 26% of treehole samples (N=205). Larvae were more likely to be found in treeholes during wetter months. Distribution of larvae among treeholes was clumped. Larvae occurred more often in treeholes: of larger surface area and gape size, attributes that correlated positively with median water volume; of larger volume, within the range 0.15–42 l; and higher above the forest floor, up to 22.45 m. Larvae of Chironomidae and Culicidae predominated numerically among prey of odonate larvae, smaller larvae preying more on the former and larger larvae more on the latter. No cannibalism among odonate larvae was detected.

ISSN:0165-0424    

DOI:10.1080/01650429609361615

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

RUITER, D.E. (1995): The AdultLimnephilusLeach (Trichoptera: Limnephilidae) of the New World. ‐ Bull. Ohio Biol. Survey, N.S., 11(1): IV + 200 pp. ISSN 0078–3994; US$ 25.

ISSN:0165-0424    

DOI:10.1080/01650429609361616

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Leuctra garumnasp. n., from the French and Spanish Pyrenees, andL. ameliaesp. n., from the French and Italian Western Alps are described and compared with the closely relatedL. kempnyiMosely. To allow better separation, a new description ofL. kempnyiis given.

ISSN:0165-0424    

DOI:10.1080/01650429609361617

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

We report the results of three independent light‐trapping studies of caddis (Trichoptera) at three widely‐separated stream‐side sites in New Zealand. A total of 66 caddis species in 10 families was recorded, as follows: 33 from site K (Kawarau Gorge) in 1990–91, 28 from site T (Turitea Stream) in 1986–87 and 45 from site W (Waitakere Stream/Cascade Stream) in 1967–68. Many of the species were captured in sufficient numbers to estimate their adult flight season. The results show that some species in the families Hydrobiosidae, Hydroptili‐dae and perhaps also Philopotamidae and Chathamiidae are present as adults during every month of the year. Species captured from 7 other families appeared to have a mid‐winter break with no active adults present. For some species there is a marked change in the sex ratio through the flight season from predominantly males early in the season to predominantly females at the end. For four common species at one site, the arrival pattern at the light trap was unimodal. It was highest shortly after sunset for three of the species; the fourth showed a peak in arrival rate four hours after sunset. Numbers of insects captured were strongly dependent on air temperature.

ISSN:0165-0424    

DOI:10.1080/01650429609361618

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Aturbina(Ephemeroptera: Baetidae), gen. n., is described from a single species,A. georgeisp. n., based on larvae and male and female adults from western Brazil, French Guiana, and Paraguay. Besides being the first baetid mayfly known to lack the turbinate portion of the male compound eyes, the genus is distinct in that larvae possess an elongate, distally branched seta at the base of the right prostheca and male adults have genital forceps with a distinct distomedial process on segment 1 and a highly reduced segment 3. Male and female adults are further distinguished by the possession of a small medial hump on the metanotum and a costal process with two peaks in the hindwings. The significance of the new baetid taxon is discussed.

ISSN:0165-0424    

DOI:10.1080/01650429609361619

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Heleodromia haeniisp.n., a new aquatic dance fly (Diptera, Empididae, Hemerodromiinae) from France is described and figured. It is a member of the subgenusIlliesiellaand readily distinguished from its congeners by the possession of S‐shaped, upright distal part of the periandrium.

ISSN:0165-0424    

DOI:10.1080/01650429609361620

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A new water mite species,Monatractides adoratussp. nov., is described from Corsica and Sardinia. The systematic and zoogeographical status of the new taxon are discussed. Its particular morphological features require the establishment of a new subgenus,Pinquicolasubgen. nov.

ISSN:0165-0424    

DOI:10.1080/01650429609361621

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:0165-0424    

DOI:10.1080/01650429609361614

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor