The larva of Phyllogomphoides pugnifer Donnelly, 1979 (Odonata: Gomphidae)

Zootaxa ◽  
2019 ◽  
Vol 4688 (4) ◽  
pp. 578-584
Author(s):  
RODOLFO NOVELO-GUTIÉRREZ ◽  
JOSÉ ANTONIO GÓMEZ-ANAYA
Keyword(s):  
Abdominal Segment ◽  
Length Width ◽  
First Time

The larva of Phyllogomphoides pugnifer Donnelly, 1979 is described for the first time based on reared specimens to emergence, and several F-0 larvae collected in Chiapas and Veracruz states, Mexico. The larva of P. pugnifer can be separated from other larvae of the genus by the length/width proportion of structures such as prementum, ligula, and abdominal segment 10, as well as length of cercus relative to epiproct. 

scholarly journals Description of the larva of Protaetia (Cetonischema) speciosa speciosa (Adams, 1817) (Coleoptera: Scarabaeidae)

2020 ◽  
Vol 420 ◽  
pp. 20-24
Author(s):  
S.A. Shabalin ◽  
◽  
S.V. Tsarkov ◽  
Keyword(s):  
Abdominal Segment ◽  
Median Part ◽  
First Time

The larva of Protaetia (Cetonischema) speciosa speciosa (Adams, 1817) is described and illustrated for the first time. The larvae of the subgenus Cetonischema Reitter, 1899 have a thoracic spiracle same size as a spiracle of abdominal segments VII–VIII, larger than spiracles of abdominal segments I–VI; spiracles of abdominal segments I–VI are the same size; venter of last abdominal segment with short setae and a single of long to short setae on the lateral sides and at the apex, as well as areas without setae and spines in median part. The larva of Protaetia s. speciosa differs from larva of P. speciosissima (Scopoli, 1786) by a number of pali and it chaetotaxy in the row in palidia, and by a chaetotaxy of head capsula.

scholarly journals Spider crabs of the Western Atlantic with special reference to fossil and some modern Mithracidae

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1301 ◽  
Author(s):  
Adiël A. Klompmaker ◽  
Roger W. Portell ◽  
Aaron T. Klier ◽  
Vanessa Prueter ◽  
Alyssa L. Tucker
Keyword(s):  
Fossil Record ◽  
Early Pleistocene ◽  
Caribbean Region ◽  
Deep Time ◽  
Western Atlantic ◽  
Extant Species ◽  
Length Width ◽  
The Caribbean ◽  
Abundance And Diversity ◽  
First Time

Spider crabs (Majoidea) are well-known from modern oceans and are also common in the western part of the Atlantic Ocean. When spider crabs appeared in the Western Atlantic in deep time, and when they became diverse, hinges on their fossil record. By reviewing their fossil record, we show that (1) spider crabs first appeared in the Western Atlantic in the Late Cretaceous, (2) they became common since the Miocene, and (3) most species and genera are found in the Caribbean region from the Miocene onwards. Furthermore, taxonomic work on some modern and fossil Mithracidae, a family that might have originated in the Western Atlantic, was conducted. Specifically,Maguimithraxgen. nov. is erected to accommodate the extant speciesDamithrax spinosissimus, whileDamithraxcf.pleuracanthusis recognized for the first time from the fossil record (late Pliocene–early Pleistocene, Florida, USA). Furthermore, two new species are described from the lower Miocene coral-associated limestones of Jamaica (Mithrax arawakumsp. nov. andNemausa windsoraesp. nov.). Spurred by a recent revision of the subfamily, two known species from the same deposits are refigured and transferred to new genera:Mithrax donovanitoNemausa, andMithrax unguistoDamithrax. The diverse assemblage of decapods from these coral-associated limestones underlines the importance of reefs for the abundance and diversity of decapods in deep time. Finally, we quantitatively show that these crabs possess allometric growth in that length/width ratios drop as specimens grow, a factor that is not always taken into account while describing and comparing among taxa.

A new species of Sparsorythus Sroka & Soldán, 2008 (Ephemeroptera: Tricorythidae) from Eastern Ghats of Southern India

Zootaxa ◽  
2021 ◽  
Vol 4915 (2) ◽  
pp. 237-245
Author(s):  
T SIVARUBAN ◽  
PANDIARAJAN SRINIVASAN ◽  
S BARATHY ◽  
M BERNATH ROSI ◽  
RAJASEKARAN ISACK
Keyword(s):  
New Species ◽  
Tamil Nadu ◽  
Abdominal Segment ◽  
Southern India ◽  
Eastern Ghats ◽  
Femur Length ◽  
Male And Female ◽  
Length Width ◽  
A New Species

A new mayfly species, Sparsorythus sivaramakrishnani sp. nov. from the stream of Pullian cholai, Thuraiyur, Namakkal district, Tamil Nadu, India is described based on male and female nymphs. Sparsorythus sivaramakrishnani sp. nov. differs from the closely related S. gracilis by the shape of the left prostheca, the number of bristle-like processes at base of left prostheca, the ratio and shape of right prostheca, the ratio of femur length: width, the size of the female nymph, the mesonotum overlapping in fifth abdominal segment of the female, and by the shape of hypopharyngeal lingua. 

First description of the larvae of the fishfly genus Anachauliodes Kimmins, 1954 (Megaloptera: Corydalidae: Chauliodinae)

Zootaxa ◽  
2019 ◽  
Vol 4700 (2) ◽  
pp. 270-278
Author(s):  
YUEZHENG TU ◽  
FUMIO HAYASHI ◽  
XINGYUE LIU
Keyword(s):  
Abdominal Segment ◽  
Immature Stages ◽  
Oriental Region ◽  
Close Relationship ◽  
Segment Viii ◽  
First Time

Anachauliodes Kimmins, 1954 (Megaloptera: Corydalidae: Chauliodinae) is a fishfly genus endemic to the Oriental Region with only one recognized species, Anachauliodes laboissierei (Navás, 1913). Currently, the immature stages of this genus are completely unknown. Here we describe the larvae of A. laboissierei for the first time. The larval characters, especially the strongly developed respiratory tubes on the abdominal segment VIII, support a close relationship between Anachauliodes and the eastern Nearctic Chauliodes Latreille, 1796. 

Gryllotalpa weisei Simeu-Noutchom & Kekeunou sp. nov. and the first record of Gryllotalpa microptera (Chopard 1939) (Orthoptera, Gryllotalpidae) from Cameroon with redescription of the species

Zootaxa ◽  
2020 ◽  
Vol 4763 (1) ◽  
pp. 61-72
Author(s):  
ALAIN SIMEU-NOUTCHOM ◽  
SEVILOR KEKEUNOU ◽  
ALAIN CHRISTEL WANDJI ◽  
MARCELLE MBADJOUN NZIKE ◽  
CHARLY OUMAROU NGOUTE ◽  
...  
Keyword(s):  
Abdominal Segment ◽  
Hind Tibia ◽  
First Record ◽  
The West ◽  
Internal Process ◽  
Crop Fields ◽  
West Region ◽  
South West ◽  
Mixed Crop ◽  
First Time

Gryllotalpa weisei Simeu-Noutchom & Kekeunou sp. nov. was collected only in Tombel in the South-West region of Cameroon, during a survey conducted from March 2016 to March 2018 in the West, South-West and Centre regions of Cameroon. This species is close to Gryllotalpa microptera, collected for the first time in Cameroon during these investigations, only in the West region. G. weisei is different from G. microptera due to the hind wings that are vestigial; average fore wings length of 5.85±0.56 mm in male and 5.34±0.45 mm in female, not reaching the fifth abdominal segment; anal end of fore wings slightly concave; a stridulatory file with 54±8.02 teeth (47–71) in average, fairly spaced, with an average of 30±5.06 teeth per millimeter; hind tibia bearing 11 spines; internal process of ectophallus quite short. G. weisei abounds in mixed crop fields, followed by cocoa agro-forests; it is scarce in grassy fallows and in forest undergrowth. G. microptera was present in all types of vegetations in Bafoussam, Babeté and Bangoulap in the West region where it has been abundant in mixed crop fields, grass-fallow and coffee agro-forest but rare in forest undergrowth. 

Description of the immature stages of Anastomoneura guahybae Huamantinco & Nessimian, 2004 (Trichoptera: Odontoceridae), with a new record for the genus and keys to larvae and pupae of Neotropical genera

Zootaxa ◽  
2006 ◽  
Vol 1362 (1) ◽  
pp. 43 ◽  
Author(s):  
LEANDRO L. DUMAS ◽  
JORGE L. NESSIMIAN
Keyword(s):  
New Record ◽  
Abdominal Segment ◽  
Minas Gerais ◽  
The State ◽  
Dorsal Spine ◽  
Gut Contents ◽  
Immature Stages ◽  
Distinctive Pattern ◽  
Lateral Carina ◽  
First Time

The larva and pupa of Anastomoneura guahybae Huamantinco & Nessimian from tributaries of the Rio Aiuruoca, Minas Gerais, Brazil, are described, illustrated and compared with other Odontoceridae. The larva is characterized by a reduced lateral carina on the head, a membranous metanotum, a distinctive pattern of ventral setae on abdominal segment I and by the presence of a conspicuous dorsal spine on the anal claw. The larva of Anastomoneura is similar to those of the neartic genera Nerophilus and Namamyia principally by the undivided mesonotal plates, and by the position and form of setal areas on the metanotum. The pupa is very similar to other odontocerids. The specimens were collected from sandy substrates in small order streams. Animal parts, plant fragments and detritus were observed in the larval gut contents. The genus Anastomoneura is for the first time recorded from the State of São Paulo, Brazil. Keys to larvae and pupae of known Neotropical genera of Odontoceridae are presented.

scholarly journals Growth pattern can be used as a new characteristic to predict malignancy in breast cancer

Breast Cancer ◽  
2020 ◽  
Vol 27 (3) ◽  
pp. 445-455
Author(s):  
Bin Wang ◽  
Lizhe Zhu ◽  
Chenyang He ◽  
Minghui Tai ◽  
Can Zhou ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Growth Pattern ◽  
Comprehensive Evaluation ◽  
Weight Ratio ◽  
Final Analysis ◽  
Cancer Staging ◽  
Cutoff Point ◽  
Changing Trend ◽  
Length Width ◽  
First Time

Abstract Background To date, anatomic tumor length is a key criterion for cancer staging and can be used to evaluate the effectiveness of therapies. This article describes growth pattern that can be used as a new characteristic to represent disease burden and tumor features and predict lymphatic metastasis. Methods Patients with breast cancer were included in this 10-year (1999–2008) hospital-based multicenter retrospective study. The pathologic length/height ratio was used to illustrate the correlation between tumor features, behaviors and treatments in breast malignancies. The most appropriate ratio was chosen based on the comprehensive evaluation of p value and changing trend of each characteristic. Results The sample consisted of 4211 women diagnosed with breast cancer. Among them, 2037 patients with complete pathologic length, width and height information were included in the final analysis. There were 2.34 ± 4.77 metastatic lymph nodes for spheroid tumors and 3.21 ± 5.82 for ellipsoid tumors when the cutoff point was 2. In addition, the proportion of ellipsoidal tumors gradually increased from 54.36 to 56.67% in the upper outer quadrant (UOQ) and from 6.7 to 9.03% in the central region with an increase in the cutoff point. The proportion of ER + PR + ellipsoid tumors significantly decreased from 50.1 to 45.35% and that of ER–PR ellipsoid tumors significantly increased from 32.73 to 36.24% with an increase in the cutoff point. Additionally, the best length/weight ratio to distinguish spheroid and ellipsoid tumors was 2. Conclusion This study described for the first time how growth pattern is correlated with tumor malignancy and how it influences the selection of therapeutic strategies for patients.

Re-description of larvae of Chostonectes nebulosus (Macleay, 1871) (Coleoptera: Dytiscidae, Hydroporinae, Hydroporini, Sternopriscina) with an identification key to the known larvae of Chostonectes Sharp, 1882

Zootaxa ◽  
2020 ◽  
Vol 4718 (3) ◽  
pp. 436-446
Author(s):  
EDWARD TSYRLIN ◽  
MELISSA CAREW ◽  
YVES ALARIE
Keyword(s):  
Abdominal Segment ◽  
Head Capsule ◽  
Identification Key ◽  
Molecular Approach ◽  
Larval Instars ◽  
First Time

The second and third larval instars of the Australian endemic dytiscid Chostonectes nebulosus (Macleay, 1871) are described and illustrated for the first time including a detailed chaetotaxic analysis of head capsule and appendages, legs, last abdominal segment and urogomphi. Collected larvae were successfully associated with adults using rearing and a molecular approach. The identification key and COI barcodes for C. nebulosus, C. gigas (Boheman, 1858) and C. johnsonii (Clark, 1862) are provided. 

Larval morphology and analysis of primary chaetotaxy in the genus  Suphis Aubé, 1836 (Coleoptera: Noteridae)

Zootaxa ◽  
2019 ◽  
Vol 4619 (1) ◽  
pp. 121-138 ◽  
Author(s):  
JUAN I. URCOLA ◽  
YVES ALARIE ◽  
CESAR J. BENETTI ◽  
GEORGINA RODRIGUEZ ◽  
MARIANO C. MICHAT
Keyword(s):  
Abdominal Segment ◽  
Distal Portion ◽  
The Other ◽  
Larval Morphology ◽  
Larval Instars ◽  
Ancestral Condition ◽  
Ground Plan ◽  
Other Hand ◽  
Segment Viii ◽  
First Time

The three larval instars of Suphis cimicoides Aubé, 1837 are described and illustrated, including morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphus. A preliminary ground plan of primary chaetotaxy for noterid larvae is presented for the first time, based on the species described herein and examination of larvae of the genera Hydrocanthus Say, 1823 and Suphisellus Crotch, 1873. This ground plan is compared with previous systems proposed for other adephagan families. Larvae of Noteridae can be distinguished from those of other families of Hydradephaga by the following combination of characters: (1) antennomere 3 with a rugged area on distal portion; (2) abdominal segment VIII with a U-shaped wavy membranous area ventrally; (3) absence of pore FRd; and (4) presence of seta AB16. Several sensilla present in noterid larvae (notably setae TR2 and TA1 and pores PAl, PAm, COd, TRb and FEb) are absent in larvae of Meruidae. On the contrary, parietal seta PA5 is present in Meruidae but absent in Noteridae. The presence of pore COc in Noteridae may indicate that this family has retained the ancestral condition found only in Carabidae. On the other hand, the absence of setae FE7, FE8, FE9 and FE10 in Noteridae is similar to the condition found in Carabidae, Gyrinidae and Meruidae. 

scholarly journals Study on Tullbergiidae of Tibet, China I. Metaphorura, Mesaphorura and Prabhergia (Hexapoda, Collembola)

ZooKeys ◽  
2017 ◽  
Vol 686 ◽  
pp. 85-94
Author(s):  
Yun Bu ◽  
Yan Gao
Keyword(s):  
Abdominal Segment ◽  
Original Description ◽  
Thoracic Segment ◽  
Type Ii ◽  
Type Specimens ◽  
Median Process ◽  
First Time ◽  
Sensory Seta ◽  
Southeastern Tibet

The Tullbergiidae of Tibet is studied for the first time and the genus Metaphorura Bagnall, 1936 is firstly recorded in China. Metaphorura motuoensissp. n. from southeastern Tibet is described and illustrated. It is characterized by the presence of 1+1 pseudocelli on thoracic segment I, few vesicles (14 -16) on PAO, pseudocellar formula as 11/111/11111, all pseudocelli of type II, setae p4 on abdominal segment V as microsetae, weakly differentiated sensory seta p3 on abdominal segment V, absence of median process on Abd VI. In addition, Mesaphorura yosii (Rusek, 1967), Mesaphorura hylophila Rusek, 1982, and Prabhergia imadatei Tamura & Zhao, 1996 are recorded in Tibet for the first time. The type specimens of P. imadatei are re-examined and errors in the original description of chaetotaxy are corrected.

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