A new notodelphyid copepod,Paranotodelphys illgi n. sp. (Copepoda: Cyclopoida), parasitic in the ascidian Corynascidia herdmani Ritter in the North Pacific

A new species of the Notodelphyidae belonging to Paranotodelphys Schellenberg, 1922 is described from both sexes. The new species, Paranotodelphys illgi, can be distinguished from its congeners by the combination of its 10-segmented female antennule, the bisetose fifth legs and the extreme elongation of the caudal rami of the female, which are more than 10 times longer than wide and 4.4 times longer than the anal somite. The male has non-geniculate antennules. The new species was collected at a depth of 508m in the North Pacific Ocean, from the ascidian Corynascidia herdmani Ritter.     

A new species of Tiddergasilus Marques & Boeger, 2018 (Copepoda: Ergasilidae) from the gills of Astyanax lacustris (Lütken) (Osteichthyes: Characidae) in Brazil

A new parasitic copepod, Tiddergasilus bipartitus n. sp. (Copepoda, Ergasilidae), is described herein based on three adult females found attached to the gills of the yellow-tail lambari Astyanax lacustris (Lütken), sampled in Pardo River, municipality of Botucatu, São Paulo State, Brazil. Tiddergasilus bipartitus n. sp. was recognized as a new member of the monotypic genus Tiddergasilus Marques & Boeger, 2018 by having: antennule 6-segmented; maxillary basis armed with 2 terminal teeth and ornamented with multiple spinules; second and third leg both with endopod 3-segmented. The new copepod can be distinguished from its congener, Tiddergasilus iheringi (Tidd, 1942), by the morphology of the antennal claw, number of somites/segments in abdomen and fourth leg, and by the ornamentation of the first leg. This report expands the geographic distribution and diversity of fish species parasitized with Tiddergasilus spp. in Brazil. Moreover, it also represents the first report of an ergasilid species in the Pardo River. A list of diagnostic features for the Brazilian species of Ergasilus von Nordmann, 1832 is provided herein, in order to aid comparisons with the species of this complex genus.

     

A new genus of Platycopioida (Copepoda) from a marine cave on Bermuda

Nanocopia minuta was collected from an inland marine cave on Bermuda. This new genus is reminiscent of Platycopia in its cephalic appendages and in the 5th legs of the male. The 1st leg has a 3-segmented exopod and a 1-segmented endopod. The other legs show reductions with no armature along the inner margin of the exopods and with 2-segmented endopods in the female. Only 2nd and 3rd legs bear two outer spines on the first exopodal segment.Owing to similarities in sexual characters, mouthparts, and modifications of the swimming legs, Nanocopia and Platycopia are considered more closely related to each other than either is to Antrisocopia.Platycopioida now contains three genera of which two are found only in Roadside Cave. The order has retained several primitive characters and seems to have separated early from the gymnoplean stem.     

A new genus of moths (Lepidoptera: Gracillarioidea: Douglasiidae) in Myanmar amber

A new genus and species of moths, Tanyglossus orectometopus n. gen. et sp. (Lepidoptera: Gracillarioidea), is described from mid-Cretaceous Myanmar amber. Autapomorphies for the new genus are small size (body length of only 0.9 mm), long proboscis greater than body length, presence of ocelli, 3-segmented porrect labial palps, 5-segmented curved maxillary palps, no eye cap, lanceolate wings with reduced venation and a body and wing covering of several types of scales. Based on the available characters, the fossil is placed in the small, aberrant family Douglasiidae and represents the first fossil member of this family. This study adds to our scant knowledge of the diversity of Mesozoic Glossata.     

A new species of Acontiophorus Brady, 1880 (Copepoda: Siphonostomatoida) from Ushuaia,Argentina

A new species of Acontiophorus belonging to the family Asterocheridae was found in Ushuaia, Patagonia, southern Argentina. The new species is distinctive in having 9-segmented antennule, five setae on terminal endopodal segment of leg 1, seven elements on terminal segment of leg 1 and leg 4 exopods, and characteristic setation on maxillule lobes. This combination of characteristic features does not occur in any other species of the genus. The genus Acontiophorus is recorded for the first time from the South Atlantic.     

Gladioferens Henry (Copepoda: Calanoida) discovered in Antarctica: G. antarcticus sp. nov. described from a lake in the Bunger Hills

A new species of Gladioferens is described from a freshwater lake in the Bunger Hills, Greater Antarctica. A key to the six species of Gladioferens is provided for both sexes. Most species of the subgenus containing G. antarcticus sp. nov. are remarkable in possessing asymmetries in the second legs (male) and fourth legs (female). This suggests that the mating behaviour of these species may be radically different from that in most heterarthrandrian calanoids and calls for further study. However, G. antarcticus is more primitive than its consubgeners in having, in the male, symmetrical second legs and 3-segmented endopods in the fifth legs. The genus shows a highly disjunct distribution (Australia, New Zealand and Bunger Hills) and its biogeography is now of outstanding interest.     

A new interstitial cyclopoid copepod from a sandy beach on the western shore of Lake Baikal,Siberia

A new species of cyclopoid copepod, Diacyclops biceri sp. nov., is described from Lake Baikal. It was found in the interstitial water of a sandy beach at Buchta Peschanaya on the western shore of the central basin of Baikal. The new species is unique in possessing 2-segmented endopods in swimming legs 3 and 4. Swimming legs 2 to 4 have 3-segmented exopods. The slender body form, the lack of the antennal exopodal seta, and the presence of a secondary pseudosomite anterior to the genital double somite of the adult female are interpreted as adaptations to the interstitial habitat. The harpacticoid Epactophanes richardi Mrazek was found in the same interstitial habitat as D. biceri.     

A new species of Ochridacyclops (Kiefer, 1937) (Copepoda, Cyclopoida) from Japan

A new species of cyclopoid copepod, Ochridacyclops nipponensis is described from Japan. This is the third species of the genus. The type material was collected from small streams in the mountainous regions in Shikoku. The new species can easily be distinguished from other members of genus by its 12-segmented antennule, by the proportional length of genital double-somite relative to the length of 3 free abdominal somites, and by the shape of caudal rami. The male is unknown.     

Badijella jalzici - a new genus and species of calanoid copepod (Calanoida, Ridgewayiidae) from an anchialine cave on the Croatian Adriatic coast

A new genus and species of calanoid copepod belonging to the family of Ridgewayiidae is described from an anchialine cave on the small island of Badija, Croatia. In the new species Badijella jalzici, body length varies from 720-870 µm in both sexes. The prosome is 6-segmented, the female urosome is 4-segmented and 5-segmented in the male. The antennules are symmetrical and 26-segmented in the female, and 23-segmented on right side in the male, with two areas of geniculation. The caudal rami are symmetrical and longer than wide. The mouthparts and swimming legs 1-4 are identical in both sexes. The female fifth leg is biramous and symmetrical; the male fifth legs are strongly developed, asymmetrical, biramous on both sides, endopods 2-segmented and exopods 2-segmented and complex in structure.     

中国梳蓟马属一新种（缨翅目：蓟马科）

记述中国梳蓟马属1新种:Ctenothrips dissimilis sp.nov.。该新种触角7节、腹部网状刻纹较浅,可明显区别于本属内其它种;雄虫和C.niger很相似,但C.niger腹部III-IV节腹板腺域为短圆形,该新种腺域为长椭圆形,同时触角节数和颜色也不同。模式标本保存于西北农林科技大学昆虫博物馆。     

A new species of Wellsopsyllus (Copepoda, Harpacticoida, Paramesochridae) from the deep Southern Ocean and remarks on its biogeography

The new deep-sea copepod species of the family Paramesochridae (Copepoda, Harpacticoida) presented here was collected during the scientific ANtarctic benthic DEEP-sea biodiversity cruise II (ANDEEP II) to the Weddell Abyssal Plain and western Weddell Sea and the CROZet natural iron bloom and EXport experiment (CROZEX cruise) to the Crozet Isles in the Indian Ocean. The new species has been allocated to the subgenus Wellsopsyllus within the genus Wellsopsyllus Kunz, 1981, based on the 1-segmented endopods and 3-segmented exopods of swimming legs 2–4. Furthermore, the new species shows a 1-segmented exopod of the antenna. Wellsopsyllus (W.) antarcticus sp. n. can be distinguished from its congeners by its small body size, the presence of two setae on the distal segment of the endopod of the first swimming leg, by the very small furcal rami, the extremely reduced endopods of second and third swimming legs, the reduced mandibular palp and maxillula, as well as by the size and armature of the fifth and sixth swimming legs in both sexes. Difficulties of the placement of the new species into a suitable genus show an insufficiency in the present family classification. In the future, a revision of the genus Wellsopsyllus is essential. With its presence in the western Weddell Sea and the Indian Ocean, the new species may have a wide distribution range. Furthermore, it is the first abyssal species of the genus Wellsopsyllus sampled outside of the Scotia Sea.     

Speleohvarella gamulini gen. et sp. nov., a new copepod (Calanoida, Stephidae) from an anchialine cave in the Adriatic Sea

A new copepod genus and species, Speleohvarella gamulini, collectedfrom the anchialine cave iva Voda on Hvar Island (Croatia),is described from both sexes. This is the first record of acalanoid copepod found in an Adriatic anchialine cave. The newgenus is distinguished from other Stephidae by a combinationof the following features: the cephalosome is separate fromthe first pedigerous somite, and the fourth and fifth pedigeroussomites are fused; the female urosome has 4 segments, the genitaldouble-somite is symmetrical and the caudal rami is asymmetricalwith the right longer than the left; antennules of both sexesare symmetrical and 24-segmented, with the fusion of ancestralsegments II–IV, X–XI and XXVII–XXVIII; theexopod of antenna is 7-segmented; 2 setae are present on thebasal exite of maxillule; in the male the right leg 5 is shortand 3-segmented, and the left leg elongate and 5-segmented.     

Description of Echthrogaleus spinulus n. sp. (Copepoda: Pandaridae) parasitic on a torpedo ray from the central Pacific Ocean utilising a morphological and molecular approach

A new species of parasitic copepod, Echthrogaleus spinulus n. sp. (Pandaridae), is described from the torpedo ray Tetronarce tokionis (Tanaka) (Torpedinidae) captured in pelagic Hawaiian waters. The new species has pediger 4 bearing large dorsal plates with denticles on posterior margin, genital complex with posterolateral lobes widely curved medially and overlapping, leg 4 exopod incompletely 3-segmented, and the largest body size (maximum length 16 mm from anterior rim of frontal plates to tip of caudal rami, excluding setae). This morphology does not match any of the seven valid species of Echthrogaleus Steenstrup & Lütken, 1861. Analysis of 28S rDNA sequences separated the new material from the Central Pacific from samples of E. coleoptratus in the Atlantic and Eastern Pacific Oceans. However, due to the lack of DNA sequences in the databases, the new 28S rDNA sequence cannot used to confirm the species identity. The unique morphological characteristics of the Central Pacific female copepods combined with 28S rDNA sequencing was used as a basis to validate the new species.

     

Eodiaptomus shihi n. sp. (Copepoda,Calanoida) from central India

Eodiaptomus shihi n. sp. is described from the material collected from Gandhisagar reservoir, River Narmada and a hillpool in the Madhya Pradesh State of central India. The salient features of this new species include: in female, the left metasomal wing is strongly developed, and the endopodite in leg 5 is 2-segmented and longer than first exopodite-segment; in male, the right caudal ramus is armed with a tooth-like chitinous structure near ventro-distal region, and in right leg 5, the basis is devoid of any hyaline lobe on inner margin and the first exopodite-segment is produced into a large spinous process at disto-outer corner.     

Micropacteridae, a new family of Remipedia (Crustacea) from the Turks and Caicos Islands

Recent diving explorations of anchialine caves on the Turks and Caicos Islands yielded a rather small and slender new species of Remipedia. Micropacter yagerae n. gen., n. sp. is distinguished from all other species of nectiopod remipedes by a number of autapomorphic characters, including an oval body terminus with fused segments, unequal pairs of terminal claws on maxilla and maxilliped, an almost complete reduction of sternal bars and pleurotergites, molar processes with relatively few, but strong spines, and frontal filaments with bifurcate processes. Based on the unique combination of derived and primitive characters, we propose to erect a new family, Micropacteridae, for this new species and genus of Remipedia. Taxonomic diagnoses for the class Remipedia, order Nectiopoda (emended due to discovery that the maxilliped is 9-segmented), and for the families Speleonectidae and Godzilliidae are presented and discussed.     

Copepoda associated with the coral Gardineroseris planulata (Dana) on the Great Barrier Reef,northeastern Australia

Three new lichomolgid copepods associated with the scleractinian Gardineroseris planulata (Dana) are described: Sociellus torus, n. gen., n. sp., characterized by a 2-segmented endopod in leg 3 and the lack of an inner seta on the first segment of the endopod in legs 1–3; Odontomolgus pumilus, n. sp., of very small size and having a much elongated free segment in leg 5 of the female; and Paramolgus ampullaceus, n. sp., distinguished by the bottle-shaped genital segment of the female. In addition, the harpacticoid Alteuthellopsis corallina Humes, 1981, is reported from this coral. With the inclusion of 3 species of the poecilostomatoid genus Xarifia already described (Humes, 1985) there are now 7 species of copepods known to be associated with Gardineroseris planulata on the Great Barrier Reef.     

Doratomantispa burmanica n. gen., n. sp. (Neuroptera: Mantispidae), a new genus of mantidflies in Burmese amber

A new genus and new species of mantidflies, Doratomantispa burmanica n. gen., n. sp. (Neuroptera: Mantispidae), is described from Burmese amber. Diagnostic characters of the new genus are small body size, trichosors present around entire wing margin except basally, protarsus 5-segmented with paired, simple claws but no aroleum, profemur bearing six cuticular spines, inner surface of protibia with row of peg-like protrusions, Sc meets R₁ in region of pterostigma, costal space greatly narrows toward wing apex, with 16 veinlets in costal space on front wing while costal veinlets on hind wing are replaced by trichosors and CuP absent in hind wing. The abdomen of the mantidfly is filled with large spheres resulting from a possible rickettsial infection. Phoretic heterostigmatid mites are adjacent to the wings of the fossil.     

Patterns of setal numbers conserved during early development of swimming legs of Copepoda (Crustacea)

During swimming leg development, the number of setae present on the exopod and endopod of the bilobed bud, the transformed swimming leg with 1-segmented rami and the swimming leg with 2-segmented rami of copepods is analysed. For swimming leg 1, the most frequent number of setae on the presumptive rami of the bilobed bud is found at a higher percentage among copepod species than the most frequent number of setae for either the transformed swimming leg with 1-segmented rami or the swimming leg with 2-segmented rami. However, for swimming legs 2–4 the most frequent number of setae for the the transformed swimming leg with 1-segmented rami is found at a higher percentage of species than that on either the bilobed bud or the swimming leg with 2-segmented rami. Thus, in the cases of swimming legs 2–4, species with different numbers of setae on the presumptive exopod and endopod of the bud bilobed bud develop the same number of setae on the rami of the transformed swimming leg with 1-segmented rami. Increasing the number of species analysed is expected to make more robust the hypothesis that the number of setae on the transformed swimming leg with 1-segmented rami is conserved relative to the number of setae on the bilobed bud.     

A new genus and species of gall midges of the supertribe Heteropezidi (Diptera,Cecidomyiidae) found in Eocene amber from Sakhalin

A new genus and species of pedogenetic gall midge, Estoperpetua sakhalinica gen. et sp. nov., of the tribe Heteropezini (subfamily Lasiopterinae) is described. Gall midges have not been recorded in Eocene amber of Sakhalin. A female with 4-segmented tarsi, large transparent triangular sensoria on flagellomeres, short wings and legs, and long 2 + 9-segmented antennae is described. Heteropezidi shows the greatest generic and species diversity in the Late Eocene Rovno amber. Representatives of this supertribe were also found in the Late Eocene Baltic amber, Early Eocene Oise amber, Miocene amber from Mexico and Dominican Republic, and African copal. Heteropezidi from different amber faunas are reviewed.