scholarly journals Ischnura praematura sp. nov. (Odonata: Zygoptera: Coenagrionidae): a species from Yunnan (China) whose females mate in the teneral state

Zootaxa ◽  
2022 ◽  
Vol 5087 (1) ◽  
pp. 59-74
Author(s):  
IAGO SANMARTÍN-VILLAR ◽  
M. OLALLA LORENZO-CARBALLA ◽  
HAOMIAO ZHANG ◽  
ADOLFO CORDERO-RIVERA
Keyword(s):  
Related Species ◽  
Abdominal Segment ◽  
Posterior Lobe ◽  
Monophyletic Clade ◽  
Closely Related Species ◽  
Genetic Analyses

Ischnura praematura sp. nov. (Holotype ♂, China, Yunnan, Lijiang, 26º31´03.54”N, 100º13’38.89”E, 2396 m, 04 xii 2015, I. Sanmartín-Villar & H. Zhang leg.) is morphologically described, illustrated and compared with close species of the genus. Ischnura praematura can be mainly distinguished from its congeners I. aurora, I. rubilio and I. asiatica by its abdominal and thoracic morphology and colouration. The posterior lobe of the prothorax is elevated in I. praematura and the mesostigmal plates possess dorsal triangular protuberances. Ischnura praematura shows pointed paraprocts, internalised wide cerci and lacks a dorsal tuberculum in the tenth abdominal segment. The blue abdominal colouration is present in the last three segments (incomplete for segment eight and ten in some individuals). No female polychromatism was detected and all females observed possessed different colouration than male (gynochrome). Morphological distinctiveness of the species is supported by genetic analyses, which show that I. praematura forms a well-supported, monophyletic clade, with I. asiatica, I. ezoin and I. pumilio as the most closely related species. In the field, mature females show strong reluctance to mate, and males were observed mating with newly emerged females.  

scholarly journals Description of the puparium and adult genitalia of Dactylodeictes brevifacies James, 1974 (Diptera: Stratiomyidae)

2020 ◽  
Vol 60 ◽  
pp. e20206028
Author(s):  
Lara Duarte Piau Braga ◽  
Welinton Ribamar Lopes ◽  
José Roberto Pujol-Luz
Keyword(s):  
Adult Male ◽  
Related Species ◽  
New Record ◽  
Abdominal Segment ◽  
Ventral View ◽  
Gallery Forest ◽  
Closely Related Species ◽  
Male And Female ◽  
Cerrado Vegetation

The puparium of Dactylodeictes brevifacies was described based on fifty-eight specimens reared in laboratory until the emergence of adults. Larvae were collected under the bark of fallen trees in a Cerrado vegetation, Gallery forest; Palm swamp (Vereda) and open grassland (Campo Limpo) in States of Goiás and Tocantins, Brazil (New Record). The puparium was compared with that of Brachyodina lopesi, the most closely related species with a described puparium. Despite this species clearly shared the larval pachygastrinae features it has a remarkable character not know before for this subfamily: the presence of four pairs of ventral setae (V) in the eighth abdominal segment in ventral view, while in other larvae and puparia of this subfamily, there are five pairs of ventral setae. The adult male and female were described and figured.

Description of the larval stages of Heterosternuta diversicornis (Sharp) (Coleoptera: Dytiscidae, Hydroporinae)

1998 ◽  
Vol 29 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Y. Alarie ◽  
K. Fritz
Keyword(s):  
Related Species ◽  
Abdominal Segment ◽  
Close Similarity ◽  
Maximum Width ◽  
Closely Related Species ◽  
Larval Instars ◽  
Larval Stages ◽  
First Instar

AbstractDescription of structures of all three larval instars of Heterosternuta diversicornis (Sharp) is presented. The chaetotaxy and porotaxy of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi are discussed in detail. A close similarity between larvae of H. diversicornis, H. wickhami Zaitzev and H. cocheconis (Fall) is confirmed. All three species distinguish from the closely related species of the genus Neoporus Guignot by (i) a very short and constricted siphon, (ii) the primary setae FE8 and FE9 which are subequal in length to the maximum width of the metafemur (first instar), (iii) the absence of natatory setae on all tibiae and tarsi, and (iv) the contiguous position of the primary setae UR2 and UR3 on the urogomphomere 1.

Studies of British Anthomyiid Flies

1952 ◽  
Vol 43 (1) ◽  
pp. 83-90 ◽  
Author(s):  
Mary Miles
Keyword(s):  
Related Species ◽  
Abdominal Segment ◽  
Immature Stages ◽  
Closely Related Species

A study of the immature stages of the Anthomyiid flies, Delia cilicrura, D. trichodactyla, Erioischia brassicae, E. floralis and Pegohylemyia fugax, associated with injury to cruciferous crops, has shown that the several species can be distinguished. The egg stage can be identified by the sculpturing of the chorion, except in the case of the closely related species E. brassicae and E. floralis where the sculpturing is similar but there is a considerable difference in size.The larvae can be distinguished by differences in the shape and character of the head and in its relation to the prothorax, and in the form of the mouth-parts in the three instars. The number of finger-like processes of the anterior spiracles and the number and arrangement of the tubercles of the eighth abdominal segment also contribute to the identification of the larvae.

A new species and a new record of Sinella Brook (Collembola: Entomobryidae) from Guizhou Province, China 

Zootaxa ◽  
2018 ◽  
Vol 4444 (4) ◽  
pp. 484
Author(s):  
JUN WU ◽  
CHENG-WANG HUANG ◽  
YUN-XIA LUAN
Keyword(s):  
New Species ◽  
Related Species ◽  
New Record ◽  
Abdominal Segment ◽  
Nature Reserve ◽  
Guizhou Province ◽  
Closely Related Species ◽  
National Nature Reserve ◽  
A New Species

Two species of Sinella Brook were discovered in an expedition to Maolan National Nature Reserve, Guizhou Province, China: S. maolanensis sp. nov. and S. colorata Zhang, Qu & Deharveng. The new species is characterized by the postlabial chaetae X, X2 and X4 ciliate and X3 smooth and the 6+6 central mac on the fourth abdominal segment. It differs from the closely related species by the combination of postlabial chaetae and abdominal chaetotaxy. Sinella colorata is a new record from the province. A key to the eyeless Sinella species from China is provided. 

Microsatellite Marker: Importance and Implications of Cross-genome Analysis for Finger Millet (Eleusine coracana (L.) Gaertn)

2020 ◽  
Vol 9 (3) ◽  
pp. 160-170
Author(s):  
Thumadath P.A. Krishna ◽  
Maharajan Theivanayagam ◽  
Gurusunathan V. Roch ◽  
Veeramuthu Duraipandiyan ◽  
Savarimuthu Ignacimuthu
Keyword(s):  
Molecular Marker ◽  
Microsatellite Markers ◽  
Ssr Markers ◽  
Genome Analysis ◽  
Related Species ◽  
Finger Millet ◽  
Crop Improvement ◽  
Human Beings ◽  
Closely Related Species ◽  
Genome Amplification

Finger millet is a superior staple food for human beings. Microsatellite or Simple Sequence Repeat (SSR) marker is a powerful tool for genetic mapping, diversity analysis and plant breeding. In finger millet, microsatellites show a higher level of polymorphism than other molecular marker systems. The identification and development of microsatellite markers are extremely expensive and time-consuming. Only less than 50% of SSR markers have been developed from microsatellite sequences for finger millet. Therefore, it is important to transfer SSR markers developed for related species/genus to finger millet. Cross-genome transferability is the easiest and cheapest method to develop SSR markers. Many comparative mapping studies using microsatellite markers clearly revealed the presence of synteny within the genomes of closely related species/ genus. Sufficient homology exists among several crop plant genomes in the sequences flanking the SSR loci. Thus, the SSR markers are beneficial to amplify the target regions in the finger millet genome. Many SSR markers were used for the analysis of cross-genome amplification in various plants such as Setaria italica, Pennisetum glaucum, Oryza sativa, Triticum aestivum, Zea mays and Hordeum vulgare. However, there is very little information available about cross-genome amplification of these markers in finger millet. The only limited report is available for the utilization of cross-genome amplified microsatellite markers in genetic analysis, gene mapping and other applications in finger millet. This review highlights the importance and implication of microsatellite markers such as genomic SSR (gSSR) and Expressed Sequence Tag (EST)-SSR in cross-genome analysis in finger millet. Nowadays, crop improvement has been one of the major priority areas of research in agriculture. The genome assisted breeding and genetic engineering plays a very crucial role in enhancing crop productivity. The rapid advance in molecular marker technology is helpful for crop improvement. Therefore, this review will be very helpful to the researchers for understanding the importance and implication of SSR markers in closely related species.

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