Description of Pudica wandiquei n. sp. (Heligmonellidae: Pudicinae), a nematode found infecting Proechimys simonsi (Rodentia: Echimyidae) in the Brazilian Amazon

A new species of nematode parasite of the subfamily Pudicinae (Heligmosomoidea: Heligmonellidae) is described from the small intestine of Proechimys simonsi (Rodentia: Echimyidae) from the locality of Nova Cintra in the municpality of Rodrigues Alves, Acre state, Brazil. The genus Pudica includes 15 species parasites of Neotropical rodents of the families Caviidae, Ctenomyidae, Dasyproctidae, Echimyidae, Erethizontidae, and Myocastoridae. Four species of this nematode were found parasitizing three different species rodents of the genus Proechimys in the Amazon biome. Pudica wandiquei n. sp. can be differentiated from all other Pudica species by the distance between the ends of rays 6 and 8 and the 1-3-1 pattern of the caudal bursa in both lobes.

A new endemic species of Chicoreus from Savai’l, Samoa

A new species of Muricidae, Chicoreus (Triplex) tangaroai is described from the Samoan Infraprovince. This new taxa is compared with C. (T.) thomasi (Crosse, 1872) and C. (T.) lorenzi Houart, 2009, related species in the Marquesan Molluscan Province.

A new species of the genus Caenorhinus Thomson, 1859 (Coleoptera, Rhynchitidae) from North Vietnam

A new species, Caenorhinus (Flavodeporaus) nahangensis Legalov, sp. nov. from North Vietnam is described and illustrated. This new species is similar to Caenorhinus (Flavodeporaus) lobanovi Legalov, 2021 Laos but differs from it in the different body coloration, narrower rostrum, very weakly curved mesotibiae, densely punctate elytral interstriae, obtuse apex of the aedeagus, and the form of the basal sclerite. From C. nigrobasalis Legalov, 2003, it is distinguish in the narrower rostrum, finely punctate forehead, greenish elytra, red ventrites 4 and 5, pygidium and propygidium, obtuse apex of the aedeagus, and the form of the basal sclerite.

Dickeya colocasiae sp. nov. isolated from wetland taro, Colocasia esculentum

Bacterial pathogens identified as Dickeya sp. have recently been associated with a corm rot of wetland taro on Oahu, Hawaii, but the species designation of these strains was unclear. A Gram-negative, pectinolytic bacterial strain PL65T isolated from an infected taro corm was subjected to polyphasic analysis to determine its genomic and phenotypic characteristics. Multi-locus sequence analyses (MLSA) based on five housekeeping genes (dnaA, gapA, gyrB, atpD, and purA) revealed that Dickeya zeae and D. oryzae, were the closest relatives. Phylogenetic analysis based on 463 core gene sequences clearly showed two potentially new species within Dickeya oryzae. In silico DNA-DNA hybridization value of strain PL65T with 12 Type strains of Dickeya species was <68%. Average nucleotide identity (ANI) analysis revealed that PL65T was at the margin of the species delineation cut-off values with a 96% ANI value. The metabolic profile of strain PL65T using BIOLOG differentiated it from the type strains of all other known species of Dickeya. Based on the results of genome-to-genome comparisons and phenotypic data presented in this report, we propose establishment of a new species, Dickeya colocasiae sp. nov. with strain PL65T as the type strain (ICMP 24361T).

A new species of the genus Eremochorus Zaslavskij, 1962 (Coleoptera: Curculionidae) from South-eastern Altai (Russia)

A new species, Eremochorus (Eremochorus) kuraicus Legalov, sp. nov. from Kosh-Agach District, South-eastern Russian Altai of Western Siberia is described and illustrated. This species is similar to E. mikhailovi Legalov, 2007 from Central Altai but differs from it in the longer rostrum with distinct middle carina, longer elytra and the aedeagus. A distribution map for E. kuraicus Legalov, sp. nov. and E. mikhailovi is given.

A new species of sucking louse (Psocodea: Phthiraptera: Anoplura: Hoplopleuridae) from the pale field rat, Rattus tunneyi (Rodentia: Muridae), in Australia

We describe and illustrate a new species of sucking louse, Hoplopleura tunneya new species, from the Australian pale field rat, Rattus tunneyi Thomas (Rodentia: Muridae). Currently, 22 species of the genus Hoplopleura Enderlein, 1904 (Phthiraptera: Anoplura: Hoplopleuridae) are known from Australian endemic rodents. Among the seven “new endemic” rodent species of the genus Rattus in Australia, R. tunneyi is one of five hosts to Hoplopleura lice. In addition, we give a list of all the species of Hoplopleura known from Australian endemic rodents. Including the introduced species Polyplax spinulosa, the total number of sucking louse species known from Australian endemic rodents is now 24.