Svanecannon7210

A sponge collected along the Aleutian Islands of Alaska revealed an unusual combination of characters including ectosomal acantho - tornotes never before observed. Assignment to Poecilosclerida is without any doubt due to the presence of chelae but assignment to family is more problematic because 1) there is no family of Poecilosclerida (or any other demosponge) with ectosomal acantho-tornotes, and 2) the combination of occurring spicules and their arrangement does not conform completely to any Poecilosclerid family. Thus family assignment is only possible by amending the concept of an existing poecilosclerid family and allow for spined as well as smooth tornotes and a confusedly plumose choanosomal arrangement of megascleres. We suggest assignment to Hymedesmiidae as this requires relatively slight changes compared to other Poecilosclerid families. We suggest the erection of Acantorna n. gen. to accommodate Acantorna tahoma n. sp. The new genus and species differ from all other Hymedesmiid genera in the possession of the characters necessary for the suggested amendment. Additional differences to each Hymedesmiid genus are added.The genus Xenasterides Newton, 2017 is considered here as a junior synonym of Pseudastenus Bernhauer, 1933, both monotypic and Neotropical genera of Paederinae (Staphylinidae). A thorough description of the genus is provided. The species Pseudastenus barretoi Bernhauer, 1933 and P. plaumanni (Bierig, 1939) are redescribed and illustrated, six new species are described, and a dichotomous key is available for species. These new species are P. amazonicus, P. ferrugineus, P. latus, P. oculatus, P, ribeirocostae, and P. schubarti.Telebasis rojinegra sp. nov. was recorded from ponds at La Selva Biological Station and three other sites in the Caribbean lowlands of Costa Rica. The new species appears closely related to T. boomsmae Garrison, 1994 recorded from Mexico, Belize and Costa Rica, T. collopistes Calvert, 1902 ranging from Mexico to Honduras, and T. garrisoni Bick Bick, 1995 from South America, but differs in having straighter and more elongate paraprocts and a half black pattern on the rear of the head. The female mesostigmal plates are also distinct from the above species. Telebasis rojinegra was active on the water primarily during afternoon hours.The history and original concept of Parygrus Erichson, 1847, is reviewed, the genus is redescribed, and the status of the type species, P. erichsoni Waterhouse, 1876, is clarified. The four original species are reviewed, with photographs provided for the type specimens of P. angustatus Grouvelle, 1896, P. elateroides Grouvelle, 1896, and P. erichsoni, and a non-type of P. parallelus (Grouvelle, 1890). The holotype of P. parallelus is apparently missing. The female holotype of P. erichsoni is redescribed. An associated male P. erichsoni specimen is compared with the holotype and the male genitalia are described and illustrated. Selleckchem AG-14361 General descriptions and provisional diagnoses are given for P. angustatus, P. elateroides and P. parallelus.  Five new species (P. guarani new species, P. lengua new species, P. maya new species, P. quechua new species, P. zamuco new species) are proposed, illustrated, and their geographic distributions mapped. For the first time, the male genitalia of Parygrus species are described and illustrated. A provisional key to the species and an updated key to the Neotropical genera of Dryopidae are provided.The use of color photographs in crayfish species descriptions, state faunal books and popular articles is relatively recent. Except for verbal color descriptions, color and color patterns have not often been explored by crayfish researchers. Carotenoids and carotenoproteins are responsible for much of the color found in the integument and exoskeleton of crayfishes and other crustaceans. Research has shown variation in color may be the result of the environment, diet, molt stage and age, genetics, or a combination of these. Crayfishes possess color vision, may use polarization vision, and have the possibility of fluorescent vision. They also have very good low light vision. Crayfishes have a multichromatic range in color sensitivity; it ranges from blue to red, with no UV sensitivity. Color vision may be an important factor in intraspecific and interspecific competition, territoriality, camouflage, sexual selection, and communication. A distinction is made between base or background colors displayed in crayfishes and their exhibited color patterns. While actual base or background colors may vary among individual crayfishes, a case is made that color patterns show much less intraspecific variation. Distinct color patterns are the result of highly contrasting colors on appendages or parts of appendages such as chelae, leg joints, tail fan, spines, and tubercles. Body regions like the carapace and abdomen may also have contrasting spots, bands or stripes. Color patterns may be useful in better understanding crayfish taxonomy, phylogeny, and evolutionary convergence, and examples are provided.Based on the specimens collected in Mt. Trusmadi, Sabah, Malaysia, three new species of the genus Promalactis are described P. clavivalvata sp. nov., P. abasiloba sp. nov. and P. trusmadiensis sp. nov. In addition, females of three previously known species (P. folivalva Wang, 2018, P. sectoralis Wang et al., 2013 and P. trigonilobata Wang, 2018) are described for the first time. Two species (P. sectoralis Wang et al., 2013 and P. pileata Wang, 2019) are newly recorded for Malaysia. Images of both adults and genitalia of the new species and the genitalia of the newly described females are provided.In this work, we document for the first time four species of Ichthyostraca in Mexico, one Branchiura Argulus foliaceus (fish parasite), and three Pentastomida Porocephalus clavatus (reptile parasite), Raillietiella hebitihamata (reptile parasite) and Raillietiella orientalis (frog parasite). In addition, a total of 11 new host records and 16 new localities are presented for Ichthyostraca in Mexico. Based on the compilation of published information and on specimens deposited in scientific collections, the first checklist of Ichthyostraca from North America (Canada, United States of America and Mexico) is compiled. To March 2019, records of Ichthyostraca from North America include 64 species and 8 undetermined taxa, parasitizing 293 host species (64 of them identified only to a supra-specific level) in 77 provinces and states (8 from Canada, 47 from the USA, and 22 from Mexico). The subclass Branchiura is represented by 1 order, 1 family, 1 genus, 35 species and 1 undetermined taxa; the subclass Pentastomida includes records of 4 orders, 9 families, 14 genera, 29 species and 7 undetermined taxa. Ten species reported in this work are thought to be introduced into North America with only a few records of them parasitizing native hosts. This checklist summarizes the available records of this class of crustaceans in North America and represents a base line for future studies.The marine water strider Halobates sexualis Distant, 1903 was originally described from the estuary of Jambu River (Distant 1903). This species has been recorded from Malaysia (Cheng 1985, Zettel Tran 2009, Ikawa et al. 2012), Sri Lanka (Andersen Foster 1992, Ikawa et al. 2012) and Thailand (Román-Palacios et al. 2018). In the pioneering work by Herring (1961) on this genus, he mentioned the type locality to be "Estuary of the Jambu River, Malaya." Andersen and Foster (1992) provided notes on the whereabouts of the type locality of this species and mentioned that it was probably located in northern Malaya (Kuala Jambu) immediately south of the border of Thailand on the Gulf of Siam coast. Andersen and Cheng (2004) further backed this up by mentioning Malaysia in the range of H. sexualis, which was not recorded from Malaysia until 2009 (Zettel Tran 2009) but also stated that it was not verified personally. However, Distant (1903) mentioned the collection locality as "Estuary of the Jambu River, Jhering." According to the Map of the Malay Peninsula published around the same time period in 1898 by Stanford, London (RASGBI 1898), Jambu or Jering is located along the coast of Yaring (formerly Jhering/Jering) which is a District Town in Pattani Province of Thailand. This location is about 120 km northwest of the previously presumed location by Andersen Foster (1992; see fig. 24) and is most likely the site of collection, which is in present-day Thailand. The type locality of this species should thus be attributed to Thailand instead of Malaysia.Eight species of the genus Promalactis are recognized from Laos. Among them, five species are described as new P. unidentalis sp. nov., P. tenuiclavifera sp. nov., P. introflexa sp. nov., P. bolikhamsaiana sp. nov. and P. serrulata sp. nov.; three species are newly recorded for this country P. carinata Du, Li et Wang, 2011, P. flavidia Kim, 2018 and P. apicuncata Wang, 2018. Images of adults and genitalia of all the new species are provided.The Xiphydria annulitibia group is defined to include the following five species from northeastern Asia X. annulitibia Takeuchi, 1936, from Japan (Hokkaido, Kunashiri Is., Honshu, Shikoku), Korea and Russia (Sakhalin, Primorskij kraj), X. kanba n. sp. from Japan (Hokkaido, Honshu), X. kastsheevi Ermolenko, 1979, from Russia (Primorskij Kraj), X. konishii n. sp. from Japan (Hokkaido, Honshu) and X. melanoptera n. sp. from Japan (Hokkaido). Xiphydria annulitibia is redescribed based on a long series of specimens, including the holotype. Three new species, X. kanba, X. konishii and X. melanoptera, are described and illustrated, and a key is provided for the five species. Xiphydria kastsheevi is excluded from the fauna of Japan. For X. kanba, notes on a rare successful case of branch trapping which yielded 87 adult specimens and observations on the adult emergence from a dead branch and peculiar drumming behavior of the male are given.A new species of Creagrutus is described from the Amazonian Piedmont, Colombia. The new species can be distinguished from congeners by presenting the following unique combination of characters a dark mid-lateral stripe starting at anteriormost scale of lateral line, a vertically elongated humeral blotch, absence of dark blotches on dorsal fin and at base of middle caudal-fin rays, a triangular dentigerous surface of the premaxilla, 5-6 dentary teeth, and 11-12 predorsal scales. Comparisons with congeners distributed in the piedmont region of Río Caquetá basin are presented and its relationships among species of Creagrutus is inferred from the available phylogenetic framework.The present study reports the new records of two species of the hippolytid shrimp genus Lysmata Risso, 1816 in the water off Lakshadweep Islands, India from the Arabian Sea, viz. Lysmata hochi Baeza Anker, 2008 and Lysmata amboinensis (De Man, 1888) with more taxonomic information. Moreover, L. hochi is the first distributional report from the Indian Ocean. It is morphologically similar to L. kuekenthali and differences are discussed. Colour pattern and morphological trait of L. amboinensis are very close to L. grabhami which also differs in the presence of anti-penultimate segment of 3rd maxilliped more than 2.0 times as long as penultimate segment and stylocerite does not reaching the distal end of the cornea. These specimens were obtained at a depth of 0.5-2 m from the intertidal region of Agatti Island. Additionally, we estimated pairwise genetic distances for these two species and congeneric species using cytochrome oxidase subunit I gene sequences where interspecific distances ranged from 11-25.8 %.