Comparative studies on Culex bitaeniorhynchus Giles (1901) and its tenax variant (Diptera: Culicidae) in Chandigarh, India

ENTOMON ◽  
2021 ◽  
Vol 46 (4) ◽  
pp. 293-304
Author(s):  
Rani Ranjana ◽  
Kaur Sandeep ◽  
Kaur Sukhbir ◽  
Kaur Sagandeep

During present investigations the detailed morphotaxonomic studies of Culex bitaeniorhychus revealed that it exists in two forms i.e typical and tenax in and around Chandigarh. Various intraspecific variations in the morphology and male genitalia were observed in both these forms. The main aim of this study is to distinguish these two forms of Cx. bitaeniorhynchus and their separation from other closely related species. The intraspecific variants of these forms have been studied further with respect to phallosome regions of the male genitalia. For assessing the significant differences among their phenotypic characteristics one–way ANOVA was done along with pair-wise comparisons of samples means. Some of the earlier workers have considered tenax form, a synonym of Cx. infula which is another closely related species of Cx. bitaeniorhynchus. But, on the basis of remarkable differences observed between tenax and infula, it is suggested that these two are separate taxons and should not be synonymised.

Zootaxa ◽  
2007 ◽  
Vol 1449 (1) ◽  
pp. 51-56
Author(s):  
CIBELE STRAMARE RIBEIRO-COSTA

A new species, Merobruchus santiagoi Ribeiro-Costa sp. nov., is described from Brazil and Bolivia in seeds of Pithecelobium scalare Griseb (=P. tortum Mart.). Comparisons are made with its closely related species, M. boucheri Kingsolver 1980, presenting illustrations for both including male genitalia


2003 ◽  
Vol 12 (2) ◽  
pp. 49-53 ◽  
Author(s):  
J. Thomas Curtis ◽  
Zuoxin Wang

The formation and maintenance of social attachments are fundamental to human biology. Because deficits in the ability to form such attachments are associated with a variety of psychological disorders, an understanding of the neural basis of social attachment may provide insights into the causes of such disorders. Comparative studies using several closely related species of voles that display different social organizations and behaviors have begun to provide important insights into the neurochemical events underlying social attachment. Here we review recent developments in the study of social attachment, focusing on the roles of specific neurochemical systems in pair-bond formation.


2020 ◽  
Vol 722 ◽  
Author(s):  
Ebrahim Gilasian ◽  
Jeroen Van Steenis ◽  
Mehrdad Parchami-Araghi

The species of the Eumerus tricolor species group in Iran are reviewed. Six species new to science are described from Iran, i.e., Eumerus atricolorus Gilasian & van Steenis sp. nov., E. brevipilosus Gilasian & van Steenis sp. nov., E. chekabicus Gilasian & van Steenis sp. nov., E. ovoformus Gilasian & van Steenis sp. nov., E. pilosipedes Gilasian & van Steenis sp. nov. and E. vallicolus Gilasian & van Steenis sp. nov. Three species, E. hissaricus Stackelberg, 1949, E. longitarsis Peck, 1979 and E. richteri Stackelberg, 1960, are newly recorded from Iran. Photographs of the species as well as illustrations of the male genitalia of the new species and closely related species are provided. An identification key to the males of the Iranian Eumerus tricolor species group is presented. A row of long posterodorsal setae on the wing vein costa basally is presented and argued as a new diagnostic morphological character for the entire Eumerus tricolor species group.


Zootaxa ◽  
2020 ◽  
Vol 4821 (2) ◽  
pp. 250-276
Author(s):  
DMITRI YU. TISHECHKIN

In Russia, Kazakhstan, and Central Asia the genus Anaceratagallia includes 14 species from two subgenera; all species except one belong to the nominotypical subgenus and can be classified into four groups according to the structure of male genitalia. The illustrated descriptions for all species are given, with male calling signal oscillograms provided for nine species. Ten new synonyms are established. Comparative investigation of morphological and acoustic characters of Anaceratagallia species showed that small differences in the structure of male genitalia and 2nd abdominal apodemes are not species-specific traits. All species studied in nature appeared to be polyphagous feeding on different species of herbaceous dicotyledons. It is assumed that closely related species within each group of the subgenus Anaceratagallia arose as a result of allopatric speciation and became secondarily sympatric due to subsequent range expansions.


Zootaxa ◽  
2017 ◽  
Vol 4294 (3) ◽  
pp. 381
Author(s):  
ZHENZHEN WANG ◽  
RONG YANG ◽  
ZONGQING WANG

Two new species (Rhabdoblattella hainanensis sp. n. and Rhabdoblattella disparis sp. n.) from Hainan and Yunnan Provinces, China are described and illustrated, which extends the geographical distribution of Rhabdoblattella northward from Vietnam. Photographs and detailed morphological descriptions including the male genitalia of R. hainanensis sp. n. and R. disparis sp. n. are given. For comparison, the photos of habitus and male genitalia of a closely related species, R. annamensis (Hanitsch, 1927) are provided. A key to all species of Rhabdoblattella is provided. 


2017 ◽  
Vol 7 (3) ◽  
pp. 108-110
Author(s):  
R.V. Yakovlev ◽  
H. Alipanah

<p>The article gives a detailed illustrated redescription of the rare little-known species, <em>Dyspessa</em> <em>wiltshirei </em>Daniel, 1938, including description of the male genital structure which is presented for the first time. The differences of this species from its closely related species are also provided.</p><p> </p>


1982 ◽  
Vol 13 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Antti Pekkarinen

AbstractFor the taxonomic distinction of Bombus lapponicus (Fabricius, 1973) and B. monticola Smith, 1849, sensu Svensson 1979, suitable differences were observed in measurements of mouthparts, position of ocelli and male genitalia, but no taxonomic difference was observed in the shape of sting sheaths in queens. These two forms have a wide sympatric range in Scandinavia and the present results support the recent suggestion that B. lapponicus auctt. includes two closely related species in Fennoscandia.


Zootaxa ◽  
2019 ◽  
Vol 4657 (3) ◽  
pp. 437-473
Author(s):  
OLEKSIY BIDZILYA ◽  
YURIY BUDASHKIN ◽  
VIKTOR YEPISHIN

Nine species of Ancylosis are recorded from Ukraine. Ancylosis larissae sp. nov. related to A. hellenica (Staudinger, 1870) and A. rhodochrella (Herrich-Schäffer, 1852), is described from Crimea. Ancylosis albicosta (Staudinger, 1870) is reported from Ukraine for the first time. Ancylosis albidella Ragonot, 1888, A. syrtella (Ragonot, 1887), A. rhodochrella, A. harmoniella (Ragonot, 1887) and A. monella Roesler, 1973 are removed from the list of Pyralidae of Ukraine due to misidentifications. The host plants for A. sareptalla (Herrich-Schäffer, 1861) and A. substratellum (Christoph, 1877) comb. nov. are recorded for the first time. New host plant is recorded for A. roscidella (Eversmann, 1844). The diagnoses for all species known from Ukraine are provided. The adults and genitalia of both sexes are illustrated for all Ukrainian species and some closely related species from adjacent territories. A key to the species is given based on external characters and the genitalia of both sexes. The female genitalia of A. deserticola (Staudinger, 1870), A. hellenica (Staudinger, 1870), A. sabulosella (Staudinger, 1879) as well as the male genitalia of A. pallida (Staudinger, 1870) are described and illustrated as they have been dealt incorrectly in literature. The status of A. albidella and the records of this species from Europe are discussed. The new synonymy is proposed: Ancylosoma Roesler, 1973 syn. nov. of Ancylosis Zeller, 1839 and A. sareptalla gulbaharensis Roesler, 1973 syn. nov. of A. sareptalla (Herrich-Schäffer, 1861). Ancylosis decolorella (Ragonot & Hampson, 1901) spec. rev., stat. nov. is taken out from synonymy with A. sabulosella. The lectotype of Myelois deserticola Staudinger, 1870 is designated.


Zootaxa ◽  
2018 ◽  
Vol 4370 (3) ◽  
pp. 255
Author(s):  
LECH KARPIŃSKI ◽  
WOJCIECH T. SZCZEPAŃSKI

Xylotrechus (Kostiniclytus) alakolensis sp. nov. from East Kazakhstan is described. Distinguishing characters from closely related species are presented and discussed. The habitus, male genitalia and habitat of the newly described species are illustrated. The new species differs from X. (K.) arnoldii mainly due to its denser pubescence, stockier body sculpture, shape of the scutellum and shorter metatarsomere 1. It can also easily be distinguished from X. (K.) medvedevi inter alia by its smaller eyes, sparser pubescence of the pronotum and elytra, shorter 3rd antennal joint and more elongate, acute lobes of the protarsomere 3. Moreover, there are distinct differences in the morphology of the male genitalia in both cases. Furthermore, the Kostiniclytus subgenus consists exclusively of allopatric representatives and the new described species is distributed about 1,000 km from the known localities of most of the related taxa. 


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