Biology and Immature Stages of Tetanura pallidiventris, a Parasitoid of Terrestrial Snails (Dipt. Sciomyzidae)

1970 ◽  
Vol 1 (2) ◽  
pp. 6-89 ◽  
Author(s):  
L.V. Knutson

AbstractTetanura pallidiventris (Fallén) (Dipt. Scionyzidae) lives in terrestrial habitats in northern and central Europe, where the larvae feed on snails of the genera Cochlicopa, Discus, and Retinella. Field and laboratory data on the ecology and behaviour of the species are presented. The egg, third-instar cephalopharyngeal skeleton, and puparium are described and figured. The species is distinguished from T. fallenii Hendel, and the systematic position of the genus Tetanura Fallén is discussed.

2021 ◽  
pp. 203-212
Author(s):  
Viktor Melnyk

The systematic position and modern state of populations of the rare species of Ukrainian flora Carlina cirsioides Klokov (Asteraceae) are considered. Since this species is included into the Red Data Book of Ukraine (2009) and the European List of Globally Threatened Animals and Plants (1991), it is well-known for European botanists as an endemic of the Ukrainian flora. However, neither the authors of Flora Europaea (1976), nor monographers of the genus Carlina recognize Carlina cirsioides as a separate species. Comparative morphological, chorological, and coenotic analyzes does not allow Carlina cirsioides to be considered as a separate species, endemic and relic of the Ukrainian flora. According to morphological features, specimens from the plains of Ukraine are referred to the subspecies Carlina acaulis caulescens, which is distributed mainly in plain regions of Europe. Ecological and coenotic conditions of habitats of Carlina acaulis in the lowland part of Ukraine are different from its habitats in the Carpathians and Alps and are close to xerotherme grass communities with Carlina acaulis of plains of Central Europe. Steppe communities of Festuco-Brometea class with Carlina acaulis in the Volhynian-Podolian Upland are similar to xerotherme communities with Carlina acaulis of Central Europe. Erico-Pinetea class communities are common habitats for Carlina acaulis in the Ukrainian Polissia and north-eastern Poland. Lowering the species status of Carlina cirsioides from separate species to subspecies Carlina acaulis caulescens does not diminish its phytosozological value. Due to the low number of Carlina acaulis populations in the Volhynian-Podolian Upland and Polissia, all localities of this species in the lowland part of Ukraine need to be provided by protection.


Zootaxa ◽  
2017 ◽  
Vol 4317 (2) ◽  
pp. 225 ◽  
Author(s):  
JIŘÍ SKUHROVEC ◽  
PETER HLAVÁČ ◽  
JAN BATELKA

The genus Pselactus in the Cape Verde Islands is reviewed. Pselactus obesulus (Wollaston, 1867) from São Vicente is redescribed and P. strakai sp. nov. from São Nicolau is described. Both species are diagnosed and illustrated; their larvae are described, larval morphology is discussed and the current state of knowledge about immature stages of Cossoninae is summarized. The systematic position of the genus within Onycholipini is reviewed, and the placement of genus in Cossoninae is discussed. A short note on biogeography of Pselactus is provided. 


Biologia ◽  
2007 ◽  
Vol 62 (6) ◽  
Author(s):  
Peter Vďačný ◽  
Eva Tirjaková

AbstractThe morphology and morphometry of five soil haptorid ciliates (Apospathidium terricola, Diplites telmatobius, Armatoenchelys geleii, Paraenchelys terricola, and Spathidium aciculare), collected from a variety of terrestrial habitats in Slovakia (Central Europe), were investigated using live observation and protargol impregnation. Emphasis was given on the ciliary pattern, the fine structure of dorsal brush, as well as the shape and size of the extrusomes. The Slovak specimens of A. geleii differ considerably from other populations investigated in detail by body size and micronuclei number. Furthermore, the most important difference concerns the number of dorsal brush rows (4 vs. 3). Therefore, it was decided to establish a new subspecies, namely Armatoenchelys geleii barborae ssp. n., for the Slovak population. Shape and nuclear variants of A. terricola and P. terricola are presented and morphometrically characterized. Novel details on the dorsal brush structure of A. terricola and D. telmatobius are reported. Pair formation and exconjugant nuclear reconstruction in P. terricola are described. Two species, namely A. terricola and S. aciculare, are first records for the Holoarctic biogeographic region.


2021 ◽  
Vol 29 (1) ◽  
pp. 17-27
Author(s):  
V. I. Melnyk ◽  
I. O. Kovalchuk ◽  
L. I. Dovhopola ◽  
Y. P. Shapran

The study of the current state and habitats of rare and threatened species of plants is a relevant task of ecological research. The paper presents the results of the study of systematic position, habitats and modern state of populations of a rare species included in the Red DataBook of Ukraine Carlina cirsioides Klokov (=C. acaulis L.). Carlina cirsioides is well-known to European phytosozologists as an endemic and relic species of the Flora of Ukraine. At the same time, the species independence of this taxon is not recognized by the authors of monographs on the Carlina genus and by the authors of “Flora Europaea”. Comparative morphological, chorological and ecological-coenotic analyses do not give sufficient reasons to consider C. cirsioides described by Klokov as a separate species, endemic and relic species of the Flora of Ukraine. According to the morphological traits, the specimens from the lowland part of Ukraine belong to the C. acaulis caulescens subspecies, which is distributed mostly in the lowlaand regions of Europe. Ecological-coenotic conditions of habitats of C. acaulis in the plains of Ukraine are different from those in the mountain regions and are close to the plains habitats of this species in Central Europe. Steppe communities of class Festuco-Brometea, of which C. acaulis is component in the plains part of Ukraine, are close to xerothermic herbaceous communities of Central Europe; forest communities of Erico-Pinetea with C. cirsioides in Ukrainian Polissia and the North-East Poland are very сlose by floristic composition. The removal of separate species status of the plains populations of C. acaulis near the eastern border of the range does not at all downplay its sozological significance. Taking into account the low number of C. acaulis in the Volhynian-Podolian Upland and in the Polesian Lowland, all localities of this species in the lowland part of the range in Ukraine must be taken under protection in situ.


2014 ◽  
Vol 83 (1) ◽  
pp. 41-p4 ◽  
Author(s):  
Ewa Pietrykowska-Tudruj ◽  
Bernard Staniec ◽  
Tadeusz Wojas ◽  
Alexey Solodovnikov

For the first time eggs, larvae and pupae obtained by rearing are described for Astrapaeus, a monotypic West Palearctic rove beetle genus of a puzzling phylogenetic position within the megadiverse tribe Staphylinini. Morphology of the immature stages of Astrapaeus ulmi is compared to that of other members of the tribe and discussed in a phylogenetic context. Contrary to conventional systematics and in accordance with recently developed phylogenetic hypotheses based on morphology of adults, larval morphology supports the non-Quediina affiliation of Astrapaeus. Eggs and pupae provided fewer characters with putative phylogenetic signal. Under laboratory conditions, a peculiar preference for isopod prey was observed for A. ulmi. However, this could not be evaluated in an evolutionary context because of the lack of data on the diet of this and related taxa in nature.


1970 ◽  
Vol 1 (4) ◽  
pp. 307-314 ◽  
Author(s):  
L.V. Knutson

AbstractThe major biological features of 53 of the 70 Swedish species of Sciomyzidae (Diptera: Acalyptratae) are summarized. The larvae are found in many kinds of aquatic and terrestrial habitats, and those of most species are air-breathing, overt, polyphagous predators of aquatic and hygrophilous, non-operculate snails. Larvae of a few species are predators or oligophagous, solitary and internal parasitoids of terrestrial snails, Tetanocera elata attacks slugs, and Antichaeta spp. feed in egg-masses of Lymnaeidae and Succineidae. Knutsonia lineata and certain Renocera spp. are the only insects known to feed obligatorily in bivalve Sphaeriidae.


Author(s):  
Shigeki Kobayashi ◽  
Haruka Matsuoka ◽  
Masaaki Kimura ◽  
Jae-Cheon Sohn ◽  
Yutaka Yoshiyasu ◽  
...  

The systematic position of Tonza Walker, 1864 is re-evaluated, based on the characteristics of immature stages and DNA barcodes. Larvae and pupae of Tonza citrorrhoa Meyrick, 1905 are described and illustrated for the first time. Larvae of this species form a loose web among the leaves and branches of the host plant, Putranjiva matsumurae Koidz. (Putranjivaceae Endl.). The immature stages of Tonza exhibit four unique apomorphies including: in the larva, the prolegs on A5 and A6 absent, and the seta L2 on the A1–A8 very small; in the pupa, four minute knobs are positioned in the middle portion on abdominal segments V and VI; while its caudal processes possess a W-shaped spine with numerous minute spines. These characteristics clearly distinguish Tonza from other yponomeutoid families and hence, we propose a new family group name, Tonzidae Kobayashi & Sohn fam. nov., for the genus Tonza. Existing DNA barcode data suggest a relationship with Glyphipterigidae Stainton, 1854. The family level status of Tonzidae fam. nov. provides a hypothesis that needs to be tested with larger molecular data.


Zootaxa ◽  
2021 ◽  
Vol 5052 (1) ◽  
pp. 91-104
Author(s):  
RUNG-JUEN LIN ◽  
YU-CHI LIN ◽  
YU-FENG HSU

The immature stages, morphology, and systematic position of Bombyx incomposita (van Eecke, 1929) are reported. The morphology of larva was investigated using scanning electron microscopy, and the phylogeny was inferred using six genes (COI, CAD, EF-1α, GAPDH, RpS5, and wgl). The molecular phylogeny strongly supported that B. incomposita is sister to B. huttoni Westwood, 1847. The divergence of the COI barcode, phylogenetic reconstruction, and difference in immature stages support the current classification, in which the species incomposita belongs to the genus Bombyx. We give illustrations of male and female genitalia and briefly discuss the utility of the chaetotaxy of the first instar larvae on taxonomy of silkmoths. The SV group bears six setae in B. mandarina, but eight in B. incomposita. The L1 bears three setae in Rotunda, but just single seta in Bombyx.  


2017 ◽  
Vol 99 (3) ◽  
pp. 296-318
Author(s):  
Jiří Skuhrovec ◽  
Levent Gültekin ◽  
Magdalena Śmigala ◽  
Krystyna Winiarczyk ◽  
Agnieszka Dąbrowska ◽  
...  

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