scholarly journals A new species of the genus Rhaphidosoma Amyot et Serville, 1843 (Heteroptera, Reduviidae), with data on its chromosome complement

2021 ◽  
Vol 15 (4) ◽  
pp. 467-505
Author(s):  
Dmitry A. Gapon ◽  
Valentina G. Kuznetsova ◽  
Anna Maryańska-Nadachowska
Keyword(s):  
New Species ◽  
Fore Wing ◽  
Sex Chromosome ◽  
Complex Structure ◽  
Chromosome Complement ◽  
Morphological Description ◽  
Oriental Region ◽  
Western Asia ◽  
Sex Chromosome System ◽  
A New Species

A new species, Rhaphidosoma paganicumsp. nov. (Heteroptera: Reduviidae: Harpactorinae: Rhaphidosomatini), is described from the Dry Zone of Myanmar. It is the fifth species of Rhaphidosoma Amyot et Serville, 1843, known from the Oriental Region, and the first record of the genus for Myanmar and Indochina. The structure of the external and internal terminalia of the male and female is described and illustrated in detail. The completely inflated endosoma is described for the first time in reduviids. The complex structure of the ductus seminis is shown; it terminates with a voluminous seminal chamber which opens with a wide secondary gonopore and may be a place where spermatophores are formed. The new species is compared with all congeners from the Oriental Region and Western Asia. It is characterised by the absence of distinct tubercles on the abdominal tergites of the male, the presence only two long tubercles and small rounded ones on the abdominal tergites VII and VI, respectively, in the female, the presence of short fore wing vestiges which are completely hidden under longer fore wing vestiges, and other characters. In addition to the morphological description, an account is given of the male karyotype and the structure of testes of Rh. paganicumsp. nov. and another species of Harpactorinae, Polididus armatissimus Stål, 1859 (tribe Harpactorini). It was found that Rh. paganicumsp. nov. has a karyotype comprising 12 pairs of autosomes and a multiple sex chromosome system (2n♂=24A+X1X2X3Y), whereas P. armatissimus has a karyotype comprising five pairs of autosomes and a simple sex chromosome system (2n♂=10A+XY). The males of these species were found to have seven and nine follicles per testis, respectively. FISH mapping of 18S ribosomal DNA (major rDNA) revealed hybridisation signals on two of the four sex chromosomes (Y and one of the Xs) in Rh. paganicumsp. nov. and on the largest pair of autosomes in P. armatissimus. The presence of the canonical “insect” (TTAGG)n telomeric repeat was detected in the chromosomes of both species. This is the first application of FISH in the tribe Raphidosomatini and in the genus Polididus Stål, 1858.

New or little-known Diamesinae (Diptera: Chironomidae) from Oriental China

Zootaxa ◽  
2019 ◽  
Vol 4571 (4) ◽  
pp. 544
Author(s):  
BINGJIAO SUN ◽  
XIAOLONG LIN ◽  
XINHUA WANG ◽  
EUGENYI A. MAKARCHENKO
Keyword(s):  
New Species ◽  
Adult Male ◽  
Morphological Description ◽  
Adult Males ◽  
Oriental Region ◽  
A New Species

Morphological description for adult male of a new species Diamesa qiangi sp. nov. and redescription for adult males of the little-known species Linevitshia prima Makarchenko and Sasayusurika nigatana (Tokunaga) of subfamily Diamesinae from the Oriental Region of China are given. 

scholarly journals A new species of Coelinidea (Hymenoptera, Braconidae) from Myanmar

1996 ◽  
Vol 7 (1) ◽  
pp. 7-8
Author(s):  
Ekaterina Gannota
Keyword(s):  
New Species ◽  
Fore Wing ◽  
First Record ◽  
Oriental Region ◽  
A New Species

Coelinidea peculiaris sp.n. (Hymenoptera, Braconidae, Alysiinae) is described from Kambaiti, Myanmar. Odd characteristics of radius and stigma of the fore wing readily separate the new species from all previously known representatives of the genus. This is also the first record of the genus from the Oriental Region.

scholarly journals A ZZ/ZW sex chromosome system in a new species of the genus Parodon (Pisces, Parodontidae)

Caryologia ◽  
2002 ◽  
Vol 55 (2) ◽  
pp. 139-150 ◽  
Author(s):  
Liano Centofante ◽  
Luiz Antonio Carlos Bertollo ◽  
Orlando Moreira-Filho
Keyword(s):  
New Species ◽  
Sex Chromosome ◽  
Sex Chromosome System ◽  
A New Species

A new species of Synotaxus and the first chromosomal study on Synotaxidae, presenting a rare XY sex chromosome system in spiders (Araneae, Araneoidea)

Zootaxa ◽  
2017 ◽  
Vol 4303 (1) ◽  
pp. 140
Author(s):  
LUCAS HENRIQUE BONFIM SOUZA ◽  
ANTONIO DOMINGOS BRESCOVIT ◽  
DOUGLAS ARAUJO
Keyword(s):  
New Species ◽  
Species Delimitation ◽  
Sex Chromosome ◽  
Male And Female ◽  
Spider Species ◽  
Chromosomal Study ◽  
Telocentric Chromosomes ◽  
Sex Chromosome System ◽  
A New Species

Studies on spider chromosomes are very scarce, with 44 spider families without any cytogenetically analyzed species. Nevertheless, chromosomal characteristics can be useful for species delimitation, such as the sex chromosome system (SCS), which is particularly diverse in spiders. In this study, we describe Synotaxus jaraguari n. sp., based on male and female specimens from midwestern Brazil. This species has a distinctive “horn” in the male ocular area and seems related to a group of species that includes Synotaxus monocerus (Caporiacco, 1947), S. itabaiana Santos & Rheims, 2005 and S. siolli Santos & Rheims, 2005. We also present the first karyotype study on Synotaxidae. The mitotic and meiotic cells of S. jaraguari n. sp. revealed 2n♂ = 22 + XY and 2n♀ = 22 + XX telocentric chromosomes. This is the ninth spider species with a XY/XX SCS, which is extremely rare in the group. 

First report of Cleruchoides Lin & Huber (Hymenoptera: Mymaridae) from the Oriental region with description of a new species from India

2021 ◽  
Vol 55 (17-18) ◽  
pp. 1161-1167
Author(s):  
H. Sankararaman ◽  
S. Palanivel ◽  
S. Manickavasagam ◽  
A. Rameshkumar
Keyword(s):  
New Species ◽  
First Report ◽  
Oriental Region ◽  
A New Species

Aspidistra revoluta, a new species from limestone areas in Chongqing, China

Phytotaxa ◽  
2016 ◽  
Vol 257 (3) ◽  
pp. 280 ◽  
Author(s):  
Hao Zhou ◽  
Si-rong Yi ◽  
Qi Gao ◽  
Jie Huang ◽  
Yu-jing Wei
Keyword(s):  
New Species ◽  
Chromosome Number ◽  
Average Length ◽  
Chromosome Complement ◽  
Pollen Grains ◽  
The Other ◽  
Morphological Comparison ◽  
Chongqing Municipality ◽  
Karyotype Asymmetry ◽  
A New Species

Aspidistra revoluta (Asparagaceae) is described and illustrated as a new species from limestone areas in southern Chongqing Municipality, China. The new species can be distinguished from the other Aspidistra species by its unique umbrella-like pistil with large revolute stigma lobes that bent downwards and touch the base of the perigone. A detailed morphological comparison among A. revoluta, A. nanchuanensis and A. carnosa is provided. The pollen grains of A. revoluta are subspherical and inaperturate, with verrucous exine. The chromosome number is 2n = 38, and the karyotype is formulated as 2n = 22m + 6sm + 10st. The average length of chromosome complement is 4.50 μm, and the karyotype asymmetry indexes A1 and A2 are respectively 0.37±0.03 and 0.49±0.01.

A new species of the GenusHemiophthalmocorisfrom the Oriental Region (Hemiptera: Heteroptera: Miridae: Cylapinae).

2016 ◽  
Vol 122 (1-2) ◽  
pp. 97-103 ◽  
Author(s):  
Andrzej Wolski ◽  
Jacek Gorczyca ◽  
Aleksander Herczek
Keyword(s):  
New Species ◽  
Oriental Region ◽  
A New Species

Pariana caxiuanensis (Parianinae, Poaceae): a new species of an enigmatic genus of herbaceous bamboos from the Brazilian Amazon

Phytotaxa ◽  
2021 ◽  
Vol 510 (2) ◽  
Author(s):  
KAUÊ NICOLAS LINDOSO DIAS ◽  
FABRÍCIO MOREIRA FERREIRA ◽  
PEDRO LAGE VIANA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Brazilian Amazon ◽  
Morphological Description ◽  
Herbaceous Bamboos ◽  
Status Assessment ◽  
A New Species

Pariana caxiuanensis (Poaceae) is described and illustrated as a new species from the Brazilian Amazon. The new species is characterized by having the leaves clustered at the apex of the leafy culm, fimbriae few to absent, dimorphic flowering culms, large ligules (2.5–4 mm long), and pubescent to hirsute synflorescences. We present a morphological description, illustrations of the new species, the conservation status assessment, and a key to differentiate P. caxiuanensis from its morphologically related congeners.

Alternanthera ebracteolata (Amaranthaceae), a new species from Kerala (SW-India)

Phytotaxa ◽  
2021 ◽  
Vol 480 (3) ◽  
pp. 277-283
Author(s):  
SINDHU ARYA ◽  
VENUGOPALAN NAIR SARADHAMMA ANILKUMAR
Keyword(s):  
New Species ◽  
Northern Region ◽  
Morphological Description ◽  
Original Photographs ◽  
A New Species

A new species of Alternanthera from the northern region of Kerala (India)―Alternanthera ebracteolata―is described and illustrated. Morphological description as well as original photographs and drawings are provided. A. ebracteolata is morphologically similar to A. tenella from which differs by the peduncled inflorescence, number of flowers per glomerule, shape and colour of the bracts, absence of bracteoles, shape and color of appendages on androecial tube, and shape of seeds.

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