小块杨树人工林内冬季鸟类对五种越冬昆虫的捕食作用

连续二年冬季调查,鸟类对白杨透翅蛾、黄刺蛾及螳螂（广腹膛螂、狭大刀螂、大刀螂）等越冬昆虫的捕食作用分别为４４．８－５９．５％、７０％和５６－６６％。从１１下旬开始,被捕食的数量和相对百分率逐旬增加,１月下旬或２月中旬达到最大值,以后又逐渐减少,此外,讨论了昆虫寄生作用以及越冬昆虫在越冬昆虫在要对上位置对鸟类捕食作用的影响。     

The functional morphology of the praying mantis forelimb (Dictyoptera: Mantodea)

The structure and function of the forelimbs of praying mantids are discussed. A large spine on the femur and the spine on the end of the tibia were shown experimentally to be important in the capture of unrestrained flies. These spines may function to narrow the gap through which a fly may escape while the tibia is closing on the femur. Some of the spines on the femur are hinged at their base; the structure, properties and possible functions of these spines are discussed.
Similar hinged spines are reported on the lorelimbs of Stomatopoda (CrustaceaI but were not found in the Mantispidac (Neuroptera:Insecta). The variation of forelimb structure within the Mantodea is briefly discussed. The theory that the optimum prev size can be predicted from the geometry of the mantid forelimb is critically discussed.     

Cuticular Extracts of Five Common Mantids (Mantodea: Mantidae) of the Eastern United States

We undertook a preliminary investigation of the cuticular extracts of five common mantid species in the eastern United States: Tenodera sinensis (Saussure), T. angustipennis (Saussure) and Mantis religiosa (Linnaeus) introduced from the Old World and Stagmomantis carolina (Johannson) and Bruneria borealis (Scudder), which are New World species. The major components of these mixtures were normal alkanes, predominately hentriacontane, or in the case of the parthenogenic species B. borealis, tritriacontane. Tricontanal was detected in the extracts of all five species, and smaller amounts of other aldehydes and n-tricontanol were detected in some species. Complex mixtures of methyl and dimethylalkanes also were present in these extracts. The composition of the cuticular hydrocarbons of these mantids may be an adaptation for reduction of evaporative water loss in these insects that inhabit open fields.     

Motion parallax as a source of distance information in locusts and mantids

This review article is devoted to results on distance measurement in locusts (e.g., Wallace, 1959; Collett, 1978; Sobel, 1990) and mantids. Before locusts or mantids jump toward a stationary object, they perform characteristic pendulum movements with the head or body, called peering movements, in the direction of the object. The fact that the animals over- or underestimate the distance to the object when the object is moved with or against the peering movement, and so perform jumps that are too long or short, would seem to indicate that motion parallax is used in this distance measurement. The behavior of the peering parameters with different object distances also indicates that not only retinal image motion but also the animal’s own movement is used in calculating the distance.     

The systematics of Mantodea revisited: an updated classification incorporating multiple data sources (Insecta: Dictyoptera)

After a brief synopsis of the history of mantodean classification, a re-organized systematic arrangement of extant praying mantids is provided. To overcome past homoplasy problems, a phylogenetic framework based on male genital structure was used, supplemented by published morphological, chromosomal and molecular data. As already noticed by previous authors, external morphology is highly homoplastic and does not provide useful systematic tools above subfamily level. In contrast, the morphology of male external genitalia is largely congruent with the results of recent molecular phylogenies, but contradicts the most widely used past systems. Additionally, some genital structures widely used for taxonomic purposes could be shown to be not homologous, most notably the distal process. Evolutionary transitions of the distal process and the phalloid apophysis across the mantodean phylogenetic tree are identified and named. The phalloid apophysis of many derived mantodeans shows a tendency towards bifurcation into an anterior and a posterior lobe. This and other observed genital traits are hypothesized to be an adaptation of males towards a stable copulatory grasp in groups exhibiting increased sexual dimorphism, associated with an increased risk for the male to be cannibalized during copulation. Genital characters allowed most genera to be unambiguously assigned to the major clades (superfamilies) recovered by our genital and previous molecular data. The few exceptions concern genera with secondarily simplified genitalia lacking diagnostic structures. Taxonomic literature is very heterogeneous, and several subfamilies yet lacking any modern revisionary treatment will need further refinement. To account for phylogenetic constraints, i.e. correct for past polyphyletic groupings, the number of families was elevated to 29, and the number of subfamilies to 60. We establish the new family Leptomantellidae, the new subfamilies Brancsikiinae and Deiphobinae, the new tribes Leptomiopterygini, Hagiomantini, Gonypetellini, Bolbellini, Epsomantini, Neomantini, Amantini, Armenini, Danuriellini, Deiphobini, Cotigaonopsini, Didymocoryphini, Oxyelaeini, Heterochaetulini, Rhodomantini and Pseudoxyopsidini, and the new subtribes Amphecostephanina, Bolbina, Tricondylomimina, Gonypetyllina, Antistiina, Toxomantina and Tarachomantina. New morphological diagnoses are provided for the currently recognized families. Despite a few yet to be solved problems, this work offers the urgently needed working base for future studies in Mantodean systematics, life history and ecology.