寄螨属1新种和新革螨属1新种(蜱螨亚纲:中气门目:寄螨科)

记述寄螨属1新种:棒毛寄螨Parasitus clavasetosus sp.nov.和新革螨属1新种:丛枝新革螨Neogamasus fasciculus sp.nov.     

Deep-sea parasitic nematodes of the genus <Emphasis Type="Italic">Trophomera</Emphasis> Rubtsov et Platonova, 1974 (Benthimermithidae) from the Equatorial Atlantic,with the descriptions of two new species

Nematode females of the genus Trophomera (Benthimermithidae) from the collection of the Smithsonian’s National Museum of Natural History (Washington, DC, USA) were examined. Nematodes were collected in different parts of the Western Atlantic (Hatteras Abyssal Plain, Brazil Basin, and Argentina Basin) from depths of 467–5,223 m. Two new species are described. Body length of T. americana sp. n. is 3,250–4,470 μm; posterior end conical with rounded tip; cephalic setae about 3–4 μm long; trophosome consisting of several longitudinal rows of large cells; ovaries reflected; mature eggs 35 μm in diameter. Body length of T. longiovaris sp. n. is 7,870–15,400 μm; posterior end conical with rounded tip; cephalic sensilla 7 μm long; mouth opening vestigial, present as very narrow apical pore; pharynx devoid of internal lumen and muscular envelope; midgut represents a trophosome without internal lumen; trophosomal cells arranged in 3–4 longitudinal rows; rectum and anus vestigial; female reproductive system didelphic, amphidelphic, very long, occupying about 0.8 total body length; ovaries telogonic, outstretched; oviducts very long, repeatedly folded across body axis; proximal parts of oviducts being than distal ones, uterus distinctly formed. New finds of two known species, T. arnauidi and T. marionensis, are also recorded and described.     

中国派盾螨科三新纪录属及三新种记述(蜱螨亚纲：革螨股)

记述派盾螨科3新种：武汉派盾螨Parholaspis wuhanensis sp.nov.,亚弧讷派螨Neparholaspis subarcuatus sp.nov.和湖北真派螨 Euparholaspulus hubeiensis sp.nov.。三属均为中国首次记录。     

Five new species and a new subgenus of the mite genus <Emphasis Type="Italic">Premicrodispus</Emphasis> (Acari,Heterostigmata, Microdispidae) from Turkmenistan

A new monotypic subgenus, Premicrodispulus subgen. n., with the type species Premicrodispus reductus sp. n., and four new species of the nominative subgenus of the mite genus Premicrodispus, P. (Premicrodispus) paradoxus sp. n., P. (P.) heterocaudatus sp. n., P. (P.) obtusisetosus sp. n., and P. (P.) incisus sp. n., collected in soils of Turkmenistan are described. The subgenus Premicrodispulus subgen. n. differs from the nominative subgenus in the presence of 3 setae on genu I (seta l″ absent) and 1 seta on genu II (setae d and l″ absent). Premicrodispus (Premicrodispus) paradoxus sp. n. differs from all the species of the genus in the presence of solenidion on tarsus III. P. (P.) heterocaudatus sp. n. is most similar to P. longisetosus (Mahunka, 1970), but differs in the setae ps3 distinctly longer than ps ₁ (in P. longisetosus, ps ₃ and ps ₁ are similar in length). P. (P.) obtusisetosus sp. n. is most similar to P. montanus Khaustov, 2006, but differs in obtuse setae c ₁, e, and f (in P. montanus, these setae are pointed); P. (P.) incisus sp. n. is most closely related to P. longisetosus (Mahunka, 1970), but differs in the presence of distinct excavations on the posterior margin of tergites C and D (in P. longisetosus, excavations are absent).     

A new species of the shore-fly genus <Emphasis Type="Italic">Notiphila</Emphasis> (Diptera,Ephydridae) from Thailand

A new shore-fly species, Notiphila thaica sp. n. from Thailand, is described. The species is characterized by the following features: antennae yellow, eye-to-gena index equal to 7: 1, all tibiae and tarsi yellow, and setae on abdominal segments III and IV long and pointing posteriorly. The species is similar to Notiphila puncta de Meijere in the presence of numerous brown stripes on the thorax, but differs in the absence of velvety-black spots on the frons, the presence of two strong facial setae, and in the one-color wings. The new species is also very similar to N. phaea Hendel in the structure of the genitalia, but differs in the striped coloration, larger body, and apically widened surstyli. A key to the Oriental species of Notiphila is given.     

维螨属2新种记述(蜱螨亚纲:中气门目:维螨科)

记述维螨属2新种:河南维螨Veigaia henanensis sp.nov.和福建维螨Veigaia fujianensis sp.nov.     

A new blind loach, <Emphasis Type="Italic">Oreonectes elongatus</Emphasis> sp. nov. (Cypriniformes: Balitoridae) from Guangxi,China

A new loach, Oreonectes elongatus sp. nov. is described based on collections from Mulun Township, Huanjiang County, Guangxi in China. It is distinguished from its congeners by the combination of the following characters: most elongate body (body depth/SL 8.62–10.68%), blind, a forked caudal fin, obvious adipose dorsal crest and ventral crest; entire body naked and de-pigmented. Although the new species has a similar distribution with O. macrolepis, it can be distinguished by scales (absent in O. elongatus vs. present in O. macrolepis), shape of snout (elongate vs. round), the opposite position of the dorsal and pelvic fins origins (behind vs. front). The new species shares the same possession of dorsal and ventral crests, a forked caudal fin, eyeless, naked body and incomplete lateral line with O. translucens, but can be distinguished from the latter by caudal fin crest (more developed and translucent in O. translucens), longer anterior nostril tube and barbel, extreme of pectoral fin reaching 2/3 of the distance between origin of pectoral and pelvic fins, more vertebrae (4 + 38–39 vs. 4 + 32).     

派伦螨属1新种和革板螨属1新种及都匀革板螨雄螨描述(蜱螨亚纲:中气门目:派盾螨科)

记述派伦螨属1新种:遵义派伦螨Parholaspulus zunyiensis sp.nov.和革板螨属1新种:江西革板螨Gamasholaspis jiangxiensissp.nov.,并描述都匀革板螨Gamasholaspis duyunensis Chen,Guo et Gu,1994雄螨.     

Review of naupliar development among Miraciidae (Copepoda,Harpacticoida) with a naupliar description of <Emphasis Type="Italic">Paramphiascella</Emphasis><Emphasis Type="Italic">choi</Emphasis> sp. nov. from Thailand

Both genders of Paramphiascella choi sp. nov. were collected from the green alga Enteromorpha clathrata in Rayong province, Thailand. P. choi shares with other species of the genus: cylindrical body shape, rostrum not bifid, eight-segmented antennules, three-segmented exopodal antenna, and female P5 exopod with five setae. The new species distinguished from other conspecific species by: three-segmented exopodal antenna, inner edge of basis of male P1 and P2 bear a bare ovate-knob each. Enp-1 very elongate, Enp-2 of male P2 transformed into a large, strong, slightly curved and tapering attenuation with two central chitinous ridges, and bearing one medially directed knob close to enp-1. At the base of this knob arise three plumose setae of unequal length. These characters are suggested to be autapomorphies of the new species. Six naupliar stages are obtained and described a key for the identification of stages is provided. Nauplius I has one pair of caudal setae; three-segmented antennules; antenna consists of a coxa, basis, endopod and exopod; mandible has a coxa, basis, endopod and exopod; hindbody bears two caudal setae. Nauplius II develops one aesthetasc on the antennule; antenna has added an arthrite arising from the coxa; mandible has a row of tiny spinulose setae. Nauplius III has added two pairs of caudal setae. Nauplius IV bears bilobed bud of the maxillule armed with two setae and four pairs of caudal setae. Nauplius V bears a multilobed bud of the maxillule with three setae and five pairs of caudal setae. At Nauplius VI, the buds of swimming legs 1 and 2 are added.     

A new species of <Emphasis Type="Italic">Eurycletodes</Emphasis> Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera

This paper deals with taxonomy and phylogenetics of the genus Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae). Samples, collected from the southeast Atlantic on board RV “Meteor” during the cruises DIVA-1 (M48/1) and DIVA-2 (M63/2), contain specimens of Eurycletodes. Eurycletodes is characterized as a monophylum by A1 segments III + IV fused, basal seta of md palp lost, exp of md palp reduced to 1 seta or completely lost. Similarly, the subgenera Eurycletodes (Eurycletodes) and Eurycletodes (Oligocletodes) are characterized as monophyletic by the loss of the inner seta on P1 exp2 (apomorphic to E. (E.)) and the absence of the inner seta on P5 endopodal lobe (apomorphic to E. (O.)). Eurycletodes profundus is renamed as E. (O.) profundus. Eurycletodes ephippiger is the only species of the genus without subgeneric designation. Eurycletodes (O.) diva sp. nov. is described. The new species differs from described species of the genus by a larger body size, P5 endopodal lobe only slightly protruding, last segment of A1 with 2 outer setae, furcal rami elongated between setae VII and IV. The occurrence of 2 specimens of Eurycletodes (O.) diva sp. nov. at 2 sites separated by the Walvis Ridge supports the hypothesis that geographic obstacles do not prevent harpacticoid copepods from spreading in the deep sea.     

Channa nox, a new channid fish lacking a pelvic fin from Guangxi, China

 A new species of channid fish, genus Channa, is described from 7 specimens collected from the vicinity of Hepu, Guangxi Province, southern China. The new species, Channa nox, is distinguished from all other channid species by the following combination of characters: absence of pelvic fins, small rounded head (22.1%–26.8% SL), narrow interorbital width (19.6%–26.7% HL), short snout length (3.6%–5.1% SL), predorsal and prepectoral lengths (26.9%–28.4% SL and 24.8%–28.3% SL, respectively), 47–51 dorsal fin rays, 31–33 anal fin rays, 55–63 lateral line scales, 5.5–6.5 scales above lateral line, 9–13 cheek scales, 53–55 total vertebrae, 1 or 2 scale(s) on each side of lower jaw undersurface, the black upper half of body with 8–11 irregular (often anteriorly pointed V-shaped) bands or blotches, a large white-rimmed black ocellus on caudal peduncle and sparse white spots on the dark brown body and dorsal and caudal fins, as well as the shape of the hyomandibular process of the suprabranchial organs. Channa nox is sympatrically distributed with its morphologically most similar congener, C. asiatica. Received: January 18, 2001 / Revised: November 2, 2001 / Accepted: December 12, 2001     

A new genus and species of oribatid mites <Emphasis Type="Italic">Scarabacarus longisensillus</Emphasis> gen. et sp. n. (Acariformes,Liacaridae) from the Caucasus

A new genus and species, Scarabacarus longisensillus gen. et sp. n., of the family Liacaridae are described from the Caucasus (Azerbaijan and Abkhazia): The new genus Scarabacarus is characterized by the highly convex body, straight anterior margin of the notogaster, narrow fusiform sensilla, the lamellae situated on the lateral margins of the prodorsum, the absence of interlamellar and notogastral setae (besides one posterior pair), presence of four pairs of genital setae, and tridactylous leg tarsi.     

Vemakylindrus cantabricus, a new species of Diastylidae (Crustacea, Cumacea) from the northern Iberian coasts

Eleven species of the genusVemakylindrus Bacescu, 1961 are known at present. A hitherto unknown species is described herein asV. cantabricus, sp. nov., and is compared with the more closely related congeneric species:V. hastatus (Hansen, 1920) andV. stebbingi Day, 1980.Vemakylindrus cantabricus may be distinguished from its congeners by a combination of the following characters: (1) carapace densely covered by hooked denticles and hairs; (2) pseudorostrum shorter than carapace; (3) telson of “Diastylis type” with 5–6 pairs of lateral spines; and (4) external process of basis of third maxilliped with 4 long plumose setae.     

A new mite species of the genus <Emphasis Type="Italic">Lasioseius</Emphasis> (Acari: Gamasina: Ascidae) from central Europe

Lasioseius minor sp. n. (Acari: Gamasina: Ascidae) is described from the soil of thermophilic oak forest from south-western Slovakia. L. minor sp. n. belongs to the subgenus Crinidens having not reduced number of dorsal setae, separate metapodal platelets, epistomal margin with three well developed branches and only two small smooth pointed dorsal setae.     

A New Species of the Mayfly Genus Teloganopsis Ulmer, 1939 (Ephemeroptera,Ephemerellidae) from the South of the Russian Far East

All the developmental stages of Teloganopsis orbicularissp. n. from the Far East of Russia are described. The male imago of the new species is characterized by the rounded lobes of the penis and by broad hind wings. T e larvae have a light medial longitudinal stripe and groups of short setae on the medial longitudinal stripe on tergites IV–IX. The hypopharynx is rounded; the superlinguae are broad, ovate. The maxillae are uniformly broad with a bevel-edged fang-like top; the palpus is missing. The glossae are rounded, broad, and closely approximate. The eggs are ellipsoidal with one polar roundish cap. The chorion surface is covered with a reticulation of broad, gently sloping spongy ridges and deep round tartareous meshes. The systematic position of the new species is discussed.

     

Descriptive morphology of the eggs,larvae, and juveniles of two cyprinid fishes belonging to the <Emphasis Type="Italic">Zacco temminckii</Emphasis> species' group

 Embryonic, larval, and juvenile development of two cyprinid species belonging to the Zacco temminckii species' group, Z. temminckii (Temminck and Schlegel) and Zacco sp. (type A), are described and compared with each other from laboratory-reared and wild specimens. The eggs of both species were closely similar except in diameter [1.92–2.20 mm in Z. temminckii vs. 1.60–1.75 mm in Z. sp. (type A)], being demersal, almost spherical in shape, transparent and unpigmented, with a pale yellow yolk, and no oil globule. Hatching occurred 40–53 h after fertilization in Z. temminckii and after 47–60 h in Z. sp. (type A). The newly hatched larvae of both species [4.9–5.3 mm in body length (BL) in Z. temminckii and 3.5–4.8 mm BL in Z. sp. (type A)] also resembled each other, having a large transparent pear-shaped yolk and lacking body pigmentation. Myomere counts of Z. temminckii and Z. sp. (type A) larvae and juveniles were 24–27 + 14–17 = 41–42 and 23–27 + 14–17 = 40–41, respectively. The yolk was completely absorbed at 8.3 mm BL in Z. temminckii and at 6.6 mm BL in Z. sp. (type A). Notochord flexion was initiated and completed at 7.8 mm BL and 8.2 mm BL in Z. temminckii and at 6.3 mm BL and 6.6 mm BL in Z. sp. (type A), respectively. Aggregate numbers of all fin rays were completed at 17 mm BL in Z. temminckii and 13 mm BL in Z. sp. (type A). Although the morphology of larvae and juveniles of both species was very similar, differences in body length of each developmental stage, the duration and process of disappearance of the adipose finfold, the anal fin ray counts, and pigmentation on the lateral body surface were clearly recognized. Received: August 10, 2001 / Revised: March 14, 2002 / Accepted: March 27, 2002