scholarly journals A new genus and species of Digamasellidae (Acari: Mesostigmata) displaying some extraordinary gnathosomal structures

Acarologia ◽  
2021 ◽  
Vol 61 (4) ◽  
pp. 967-977
Author(s):  
Farid Faraji ◽  
Mohsen Zare ◽  
Hasan Rahmani

A new genus and species of digamasellid mites is described based on adult females and males. Bulbolaelaps bossei n. gen., n. sp. was collected from the fruiting bodies of gilled fungi on a tree trunk in Zanjan province, Iran. The new genus can be distinguished from the other genera of Digamasellidae by having a bulbous swollen protuberance on the venter of the palptrochanter; corniculi weakly formed and epistome weakly sclerotised; hypostomal setae h1 and h2 positioned more or less transversely; deutosternal groove narrow with limited number of denticles; ventral base of female cheliceral digit with a spine-like projection; and setae ad1 and pd1 tarsi II–IV narrowly lanceolate apically.

Zootaxa ◽  
2021 ◽  
Vol 4966 (5) ◽  
pp. 571-577
Author(s):  
ROMAN BOROVEC ◽  
ROBERT ANDERSON

Saotomia tuberculata, a new genus and species of Peritelini (Curculionidae; Entiminae) from São Tomé, West Africa is described. The new genus is most similar to the other African genera Dysommatus Marshal, 1933 and Fernandius Marshall, 1954. Important taxonomic characters are illustrated. 


Zootaxa ◽  
2018 ◽  
Vol 4429 (1) ◽  
pp. 157
Author(s):  
LUCIANA MARTINS ◽  
MARCOS TAVARES

Paulayellus gustavi, a new sclerodactylid genus and species, is described from the Pacific coast of Panama. The new genus and species is assigned to the subfamily Sclerothyoninae based on a suite of characters, which include the radial and interradial plates of the calcareous ring united at the base only. Paulayellus gen. nov. differs from the other Sclerothyoninae genera in having posterior processesof radial plates undivided. Additionally, differs from Sclerothyone, Thandarum and Neopentamera in having knobbed buttons, plates and cups in the body wall (whereas the body wall is furnished only with tables and plates in Sclerothyone, Temparena and Thandarum, and only with knobbed buttons and plates in Neopentamera). The new genus is, so far, monotypic. The also monotypic genus Neopentamera proved to have the radial and the interradial plates of the calcareous ring united at the base only, as typically found in the Sclerothyoninae, and is therefore transferred to that subfamily. The discovery of a new genus in the Sclerothyoninae and the transfer of Neopentamera required the amendation of the diagnosis for the subfamily. A key to the Sclerothyoninae is given. 


Zootaxa ◽  
2019 ◽  
Vol 4691 (5) ◽  
pp. 444-460 ◽  
Author(s):  
WILLIAM T. WHITE ◽  
FAHMI FAHMI ◽  
SIMON WEIGMANN

A new genus and species of catshark is described based on a single specimen collected off Ambon in the Maluku Islands of eastern Indonesia. Akheilos suwartanai belongs to the subfamily Schroederichthyinae which differs from the other catsharks in a combination of: similar sized dorsal fins, supraorbital crests present, pseudosiphon present on claspers, broad subocular ridges under eyes, posterior nasal flaps present, tips of rostral cartilage fused into a rostral node. It represents the first record of this subfamily outside of the Americas. Akheilos differs from the other genus in the subfamily, Schroederichthys in a combination of: clasper groove not fused dorsally, ventral lobe of caudal fin produced, more intestinal valve turns, anal fin slightly larger than second dorsal fin, and in colour pattern. 


Zootaxa ◽  
2008 ◽  
Vol 1879 (1) ◽  
pp. 57 ◽  
Author(s):  
MÁRCIA SOUTO COURI

The Coenosiini include 16 genera and 223 species according to the last Neotropical catalogue (Carvalho et al. 2005).  Couri and Pont (2000) confirmed the monophyly of this tribe on the basis of one synapormorphy: position of the three katepisternal setae, equidistant from each other and placed at the points of an imaginary equilateral triangle. In their cladistic analysis, the Coenosiini genera were divided into two groups. One was basal and defined by the presence of a posterodorsal apical seta on the hind tibia, presence of both arms on male sternite 6 (but not forming a ring) and a short female ovipositor. Nine valid genera were included in this group, mainly distributed throughout the Old World.  The second group was defined by the presence of a well developed epiproct and narrow sternites 6 and 7 in the female ovipositor. The other seven genera of the tribe were included in this clade.


Zootaxa ◽  
2017 ◽  
Vol 4236 (2) ◽  
pp. 302
Author(s):  
PETERSON R. DEMITE ◽  
WILTON P. da CRUZ ◽  
JAMES A. McMURTRY ◽  
GILBERTO J. De MORAES

A new genus and species of the subfamily Typhlodrominae are described from the Brazilian Amazon. The main differences between this and all other phytoseiid species are the presence of two unpaired setae on dorsal shield of deutonymphs and adults, and the absence of all ZV setae. It also differs from other typhlodromine species by its relatively long J5 setae, the presence of seta J4 and the broadly rounded posterior margin of the genital shield. Thus, the unique idiosomal setal pattern of this species is here designated as 13A+x:8F+X/JV-3,4:ZV-1–3. Because of the unique characteristics, we here describe this new taxon, Amazoniaseius imparisetosus n. sp., n. g., based on protonymphs, deutonymphs and adult females. This species is accommodated in tribe Paraseiulini Wainstein within Typhlodrominae, due to the presence of the setae z6 and S4. The tribe is redefined and an updated dichotomous key for the separation of the genera of Paraseiulini is provided. 


Phytotaxa ◽  
2013 ◽  
Vol 105 (1) ◽  
pp. 11 ◽  
Author(s):  
HIRAN A. ARIYAWANSA ◽  
SAJEEWA S.N. MAHARACHCHIKUMBURA ◽  
SAMANTHA C.KARUNARATHNE ◽  
EKACHAI CHUKEATIROTE ◽  
ALI H. BAHKALI ◽  
...  

Deniquelata barringtoniae gen. et sp. nov. (Montagnulaceae) forms numerous ascomata on distinct zonate leaf spots of Barringtonia asiatica (Lecythidaceae). We isolated this taxon and sequenced the 18S and 28S nrDNA. The result of phylogenetic analysis based on 18S and 28S nrDNA sequence data indicate that the genus belongs in the family Montagnulaceae, Dothideomycetes, Ascomycota. The ascomata are immersed, dark brown to black, with bitunicate asci and brown, muriform ascospores. Deniquelata is distinguished from the other genera in Montagnulaceae based on its short, broad, furcate and pedicellate asci, verruculose ascospores with short narrow pseudoparaphyses with parasitic naturee and this is also supported by molecular data. A new genus and species is therefore introduced to accommodate this taxon. We used isolates of this species to show via pathogenicity testing that the taxon is able to cause leaf spots when leaves are pin pricked.


Zootaxa ◽  
2002 ◽  
Vol 29 (1) ◽  
pp. 1
Author(s):  
QING-HAI FAN ◽  
ZHI-QIANG ZHANG

Primagistemus gen. nov. (Acari: Stigmaeidae) is described and its taxonomic position discussed. Adult females of this new genus are distinguished from those of Agistemus by having four pairs of setae on the propodosomal shield, by lacking postocular bodies, by having three pairs of aggenital setae and by having two setae on genu II. They are also distinguished from those of Stigmaeus by the terminal eupathidia on the palptarsus mostly fused and subterminally separated into three minute prongs, by both subcapitular setae posterolaterad of the pharynx, by having only one seta on coxa II, and by lacking endopodal shields around coxae III-IV. A new species, Primagistemus wuyiensis, from leaves of Araucaria sp. in Fujian Province of China, is described and illustrated. This new species is distinguished from the other species of the genus from New Zealand, Primagistemus loadmani (Wood) comb. nov. (transferred from Stigmaeus), by the distally truncated dorsal body setae and by setal lengths.


Author(s):  
Danièle Guinot ◽  
Valentin De Mazancourt

A new genus and species, Richerius marqueti gen. et sp. nov., of a crab of the family Hymenosomatidae MacLeay, 1838 are described from the inland waters of New Caledonia based on several specimens collected in two streams at altitudes of 180 m and 500 m, respectively. Richerius marqueti gen. et sp. nov. was compared to the other freshwater species known in New Caledonia, Odiomaris pilosus (A. Milne-Edwards, 1873), and to species of Amarinus Lucas, 1980, a genus comprising many freshwater species in New Zealand, Australia, Indonesia, the Philippines, and Papua New Guinea, but never recorded in New Caledonia. The barcode fragment of the COI mitochondrial gene was sequenced for seven specimens of R. marqueti gen. et sp. nov., and all sequences were deposited in GenBank. A brief and updated review of the New Caledonian marine and freshwater hymenosmatid fauna is provided.


Parasite ◽  
2019 ◽  
Vol 26 ◽  
pp. 50
Author(s):  
F. Agustín Jiménez ◽  
Juan Manuel Caspeta-Mandujano ◽  
Sergio Albino-Miranda

Tlacuatzoxyuris simpsoni n. gen. n. sp. is described from the cecum of the gray opossum, Tlacuatzin canescens, a species endemic to the deciduous dry forest of Mexico. The digestive tracts of four specimens were examined for parasites; three of these were archived in the American Museum of Natural History and one was a live capture. Relative to the other four monotypic genera of pinworms known to infect opossums, the new genus is diagnosed on the basis of a round cephalic plate with a semicircular stoma surrounded by a rim. In addition, males feature a prominent cephalic vesicle not fully developed in females, accounting for sexual dimorphism. The new species includes small worms that feature a conspicuous, not reticulated cephalic vesicle and semicircular stoma and lateral alae with two crests. In addition, the postcloacal cuticle of males features a small area with ornamentation between cloaca and submedial papillae. Finally, both spicule and gubernaculum are relatively short. Although the eggs of Tlacuatzoxyuris n. gen. are unknown, the conspicuous differences in traits used in the diagnosis of genera prompted us to propose a new genus for the new species. This is the first species of Oxyuridae reported in mouse opossums outside South America, and the fifth species of the family occurring in didelphimorph marsupials. This is an example of the usefulness of documenting the diversity of parasites associated with this unique clade of mammals through the examination of preserved tissues.


Zootaxa ◽  
2020 ◽  
Vol 4731 (4) ◽  
pp. 522-530
Author(s):  
RICCARDO SCIAKY ◽  
ALEXANDER ANICHTCHENKO

Megadrypta mirabilis n. gen. n. sp. from Guangdong (China) is described. The new genus is distinguished from all known genera by a combination of large body size, pronotal bead well marked, sloping shoulders, reduced hind wings, smooth claws and stylomeres, and a large number (7–8) of periscutellar pores. Some remarks are made upon the relationships with the other genera of Dryptini, raising to the genus rank the taxa Nesiodrypta Jeannel, 1949 and Prionodrypta Jeannel, 1949, formerly regarded as subgenera of Drypta Latreille, 1796. A new key to all the genera of this tribe is proposed. 


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