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本文详细地记述了波尺蛾亚科Eupitheciaabietaria debrunneata Staudinger, E. spadix Inoue 及Telenomeuta punctimarginaria (Leech)幼虫的形态特征. 相似文献
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The community structure of herbivorous animals is frequently regulated by the nutritional condition of their host plant. The present study was aimed at investigating relationship between leaf chemistry traits and assemblages of Lepidoptera larvae in southwestern part of Korea. We selected three sites in rural landscapes and lepidopteran larvae were collected using a beating sheet from May to August. We collected leaves of two major host plants, Eurya japonicaThunb andQuercusserrataThunb and measured water content, nitrogen content, carbon content and area eaten of leaf. During the last four months we collected a total of 481 individuals in more than 25 different plant species. The number of larvae was highest in July and most abundant in Eurya japonica with 253 individuals. Leaf quality varied in each month. The correlation between leaf quality and assemblage of larvae showed that the carbon content only affected the number of larvae (r =?0.833, p < 0.01). Interestingly the water content and area eaten by the larvae was positively correlated (r = 0.835, p < 0.05). 相似文献
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Abstract. The body-wall and visceral musculature of Notholca acuminata was visualized using phalloidin-linked fluorescent dye under confocal laser scanning microscopy. The body-wall musculature includes dorsal, lateral, and ventral pairs of longitudinally oriented body retractor muscles, two pairs of head retractors, three pairs of incomplete circular muscles, which are modified into dorso-ventral muscles, and a single pair of dorsolateral muscles. The visceral musculature consists of a complex of thick muscles associated with the mastax, as well as several sets of delicate fibers associated with the corona, stomach, gut, and cloaca, including thin longitudinal gut fibers and viscero-cloacal fibers, never before reported in other species of rotifers. The dorsal, lateral, and ventral retractor muscles and the incomplete circular muscles associated with the body wall appear to be apomorphies for the Rotifera. Muscle-revealing staining shows promise for providing additional information on previously unrecognized complexity in rotifer musculature that will be useful in functional morphology and phylogenetic analyses. 相似文献
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AbstractHydrotrupes chinensis Nilsson, 2003 described from the holotype collected in Anhui Province, China, is newly recorded from three localities in Guangdong Province, ca. 750?km southwest from the type locality. The species seems to inhabit hygropetric habitats exclusively, with diurnal larvae and nocturnal adults hidden under stones or in cracks in rock during the day; when disturbed, the adults readily jumped off the rock surface. The adult is redescribed. The larvae are described and illustrated for the first time, with detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi. Whereas similar morphologically to the Nearctic endemic Hydrotrupes palpalis Sharp, 1882, the first instar larva of H. chinensis distinguishes by presence of six lamellae clypeales, two additional spine-like setae both on the last abdominal segment and urogomphomere 1, and the strongly developed egg bursters. 相似文献
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Larvae of four species of the Hyphydrus lyratus species-group (Coleoptera: Dytiscidae: Hydroporinae)
Abstract The third instars of the Australian species Hyphydrus lyratus Swartz, H. contiguus Wehncke, H. elegans (Montrouzier) and H. decemmaculatus Wehncke (Coleoptera: Adephaga: Dytiscidae) are described, including a chaetotaxic analysis of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. Larvae of these species morphologically resemble other species of Hyphydrus Illiger for which the larvae have been described. A key to identify larvae of the Australian species of Hyphydrus is provided. Larvae of H. effeminatus Watts appear identical to those of H. decemmaculatus . A 822 bp fragment of the CO1 gene of larvae and adults of these species showed very slight differences, suggesting the possibility that, in Australia at least, H. decemmaculatus is polymorphic. 相似文献
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报道了毒蛾科16属幼期的毛瘤特性及其分属检索表,并对毒蛾科各类中存在的2个类型进行了讨论。 相似文献
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Six additional characters are proposed to distinguish the nymphs of the perlid genera from Southeastern Brazil, and a practical key is provided. 相似文献
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The size, shape and position of the mouth and sensory features such as the nose, eyes and ears in the nimravid barbourofelins are reconstructed. The earliest barbourofelin studied, Sansanosmilus , is the most similar to both pantherine and nonpantherine felids in sensory structure morphology. Through time, the species of the barbourofelin lineage diverge from felids with regard to facial features. Evolutionary trends include expansion of the nasal region, a more lateral orientation of the eyes and lowered position for the ears. Increased width and shortening of the muzzle accommodates the large oral opening required by the large gape of Barboumfelis , culminating in B. fricki with eyes oriented laterally enough to reduce stereoscopic vision. The ear position in this species is also significantly lower than in the earlier barbourofelins or felids. This may reflect an anatomic compromise between sensory structure position and changes in relative size, shape and position of other skull features. These changes correlate with increased canine tooth length and increased gape, exemplified by Barboumfelis fricki. Cranial soft tissue structures are restored through scars of attachment on the fossil bones, and the proportions of these features to one another determined. New observations provide criteria for reconstructing soft tissue anatomy in extinct animals. 相似文献
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The three larval instars of Hydaticus (Guignotites) tuyuensis Trémouilles are described and illustrated for the first time, emphasizing the morphometry and chaetotaxy. Second- and third-instar
larvae of the known species of the subgenus Guignotites Brinck are characterized by a trilobate median process of prementum. All larval instars of H. tuyuensis, however, have a bilobate process, similar to that present in the known species of the subgenus Hydaticus Leach. This implies that a trilobate process cannot be used as a diagnostic character for Guignotites. Alternatively, Guignotites as presently defined may not represent a natural group. A cladistic analysis of 57 larval characters suggests that the genus
Hydaticus shares a common origin with the clade composed of the genera Eretes Laporte and Thermonectus Dejean, based on the following synapomorphies: (i) abdominal segment VII almost completely sclerotized ventrally; the absence
of (ii) additional ventroapical pores on the third antennomere, (iii) setae FE4 and FE6, (iv) additional setae on the femur
and (v) additional setae on the tibia; and the presence of (vi) setae on the median process of prementum and (vii) spinulae
on the second labial palpomere. A bilobate or trilobate median process of the prementum and the submedial insertion of seta
AN3 distinguish Hydaticus from the remaining genera of Dytiscinae studied. 相似文献
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Frank Friedrich Rolf G. Beutel 《Journal of Zoological Systematics and Evolutionary Research》2010,48(1):50-74
External and internal thoracic structures of Nannochorista spp. are described in detail. The results are compared with conditions found in other endopterygote taxa, especially in members of Antliophora. Seventy-seven characters potentially useful for phylogenetic reconstruction are discussed, coded, presented as a data matrix and analysed cladistically. The thorax of Nannochorista shows a number of plesiomorphic characters compared with other mecopterans (except for Merope ) and members of the other antliophoran groups (e.g. presence of prospina and associated muscles). No specific affinities of thoracic features of Nannochoristidae and Diptera were found. The cladistic analysis results in strongly supported Antliophora (e.g. intraprofurcal muscle and ventral pleural arms present; bundle of M. mesonoto-pleuralis posterior originates on pleural arm). The thoracic characters do not support the monophyly of Mecoptera. This is possibly an artefact of the analysis. Several potential thoracic autapomorphies of the order are inapplicable in Boreidae, Siphonaptera and Diptera. Boreidae and Siphonaptera share a suite of characters related with flightlessness and are retrieved as sistertaxa when characters associated with wing reduction are predefined as irreversible. Merope appears exceptionally plesiomorphic in its thoracic morphology. Pistillifera (excluding Meropidae) and Panorpoidea (Panorpidae + Panorpodidae) are supported as clades. Due to the strongly modified thoracic morphology of Siphonaptera, the position of this group remains uncertain. The phylogenetic reconstruction using thoracic features alone is clearly impeded by far reaching modifications in Diptera in correlation with an advanced type of anteromotorism, and complex suites of reductional features in the secondary wingless forms. 相似文献
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Seishi Kimura Yoshinori Nakayama Takanari Kiriyama 《Environmental Biology of Fishes》1998,52(1-3):187-201
Eggs, embryos and larvae of five labrid fishes, Thalassoma cupido, Pteragogus flagellifer, Pseudolabrus japonicus, Halichoeres tenuispinnis, and H. poecilopterus, reared in the laboratory are described and compared. The eggs were buoyant and spherical, with a single, spherical oil globule. P. japonicus eggs were unique in lacking melanophores on the oil globule. Eggs of the remaining species closely resembled each other, except in diameter. Incubation periods were short, ranging from ca. 19 h in H. poecilopterus to ca. 31 h in P. japonicus. The newly-hatched embryos also resembled each other, having a short tail and large oval or pear-shaped yolksac, the anterior tip of which extended beyond the snout. The single oil globule was located at the anterior tip of the yolk. As the yolksac diminished with growth, its anterior tip moved posteriorly. The yolk and oil globule were completely absorbed 3 or 4 days after hatching. In all free embryos and larvae except for Pteragogus flagellifer, needle-like projections appeared on both the dorsal and anal finfold margins 12 h to 1 day after hatching. Although morphology of free embryos and larvae of all five species was very similar, differences in pigmentation, location of the anus, and the needle-like projections were apparent. Artificial keys to the newly-hatched embryos and larvae are given. 相似文献
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Frank Friedrich Johannes Schulz Martin Kubiak Felix Beckmann Fabian Wilde 《Journal of morphology》2015,276(12):1505-1524
The external and internal features of the larval head of Rhyacophila fasciata (Trichoptera: Rhyacophilidae) were described in detail. Anatomical examinations were carried out using a multimethod approach including histology, scanning electron microscopy, confocal laser‐scanning microscopy, microcomputed tomography, and computer‐based three‐dimensional reconstructions. Additionally, the information on the larval head of Limnephilus flavicornis (Limnephilidae) and Hydropsyche angustipennis (Hydropsychidae) available in the literature were reinvestigated. These anatomical data were used to address major questions of homology and terminology, that is, the ventral closure of the head capsule, the sclerites, and appendages of labium and maxilla and their muscles. These topics were discussed by summarizing the main hypotheses present in the literature and a critical inclusion of new findings. Consequently, the inner lobe of the maxilla very likely represents the galea. The distal maxillary sclerite (palpifer) is an anatomical composite formation at least including dististipes and lacinia. Based on these homology hypotheses several potential groundplan features of the larval head of Trichoptera were reconstructed. The head of Rhyacophila shows several presumably plesiomorphic features as for instance the prognath orientation of the mouthparts, the well‐developed hypocranial bridge, the triangular submentum and eyes composed of seven stemmata. Derived features of Rhyacophila are the reduced antennae, the anterior directing of three stemmata and the shift of the tentorio‐stipital muscle to the mentum. J. Morphol. 276:1505–1524, 2015. © 2015 Wiley Periodicals, Inc. 相似文献
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Wilson HM 《Journal of morphology》2002,251(3):256-275
The muscular anatomy of the millipede Phyllogonostreptus nigrolabiatus (Newport, 1844) (Diplopoda; Spirostreptida; Harpagophoridae) is comprehensively surveyed. The musculature of the first three postcollum pleurotergites, the \"thorax,\" and their associated appendages was found to be more complex than that of the postthoracic rings. It is hypothesized that the musculature of the postthoracic segments is derived relative to that of the thoracic segments, which retain primitively free sternites and are not diplosegments. This hypothesis is discussed relative to previous hypotheses positing that the anteriormost three leg-bearing rings in millipedes are diplosegments. The musculature of spirostreptid gonopods is described in detail for the first time. Comparison of the cephalic musculature is made with previously described musculature in Julida showing that, while many aspects of the musculature are conserved, there exist interordinal differences, documenting the potential utility of comparative anatomical studies for resolving millipede phylogeny. 相似文献
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In swifts and hummingbirds (Apodiformes), the splenius capitis muscle displays a characteristic modification, the 'cruciform origin'. The muscle pairs arise from the second vertebra by several slips which criss-cross and interdigitate with each other, before inserting into the skull. In the course of a study on the neck muscles of the Common Swift, we paid special attention to the arrangement of these slips of the splenius capitis muscle, and noted a previously unrecognized individual modification of this muscle. In addition, we observed an incipient cruciform origin of the deep portion (slip) of the rectus capitis ventralis muscle that has not been noticed for swifts or any other avian taxon before. The development and function of these modifications of the splenius capitis and rectus capitis ventralis muscle are discussed. 相似文献
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《Zoology (Jena, Germany)》2014,117(1):86-92
The adult morphology of the tail varies greatly among extant fishes despite sharing both ontogenetic similarities and the functional need to propel the body through a fluid medium. Both sharks (Chondrichthyes) and ray-finned fishes (Actinopterygii) control caudal fin musculature independently of axial body myomere activity to modify the stiffness and shape of their tails. For example, sharks and bony fishes possess different structural elements and muscles and move their tails in different ways, resulting in different locomotory hydrodynamic effects and a range of performance variables including speed and maneuverability. The stiffness of the heterocercal, lobate tail of the shark can be modulated during the tail beat resulting in nearly continuous thrust production. In contrast, the highly flexible tail of ray-finned fishes can be manipulated into many different shape conformations enabling increased maneuverability for these fishes. Consequently, the developmental, morphological, and functional derivation of the tail from the axial trunk has resulted in a diversity of form, the attributes of which may be of ecological and evolutionary significance. 相似文献