scholarly journals Two species with ventral receptacles in Trichocera MEIGEN (Diptera: Trichoceridae)

2020 ◽  
Vol 63 (1) ◽  
pp. 1-7
Author(s):  
Ewa Krzemiñska

The ventral receptacle is a kind of a sperm storage shaped as an elongated pouch and positioned at the ventral side of female genitalia. It is a novelty and an alternative system to the spermathecae present in a vast majority of Diptera, and insects in general. Among the Diptera the ventral receptacle is present in the families of Brachycera Acalyptrata; the subgenus Trichocera (Staryia) is the only taxon among the entire Diptera Nematocera known to date in which the ventral receptacle was found. The subgenus comprises 13 species known from northern and central Europe. In this paper two new species of Staryia are described, one from Switzerland, and the other from Scandinavia. Additionally, a revised description of a female of T. (Metatrichocera) gigantea DAHL, 1967, is provided, based on specimens from the far eastern locality in Siberia.

2019 ◽  
Vol 42 (1) ◽  
pp. 113-119
Author(s):  
Oleksiy Bidzilya ◽  
Ole Karsholt

Spiniphallelusebertisp. nov. (Iran) and Spiniphallellusnaumannisp. nov. (Afghanistan) are described. The position of the genus within the subfamily Anomologinae is briefly discussed, as is the degree of development of the gnathos in the male genitalia of two species within the same genus. A key to all Spiniphallellus species is given, and adults and male and female genitalia of the new species are illustrated. Introduction The genus Spiniphallellus was established for three species of Gelechiidae, respectively from the deserts of Kazakhstan, Uzbekistan and Turkmenistan (S.desertus Bidzilya & Karsholt, 2008), mountains of Kazakhstan (S.stonisi Bidzilya & Karsholt, 2008) and mountains of Turkey (S.fuscescens Bidzilya & Karsholt, 2008). Recently an additional new species, S.chrysotosella Junnilainen, 2016, was described from Bulgaria, Turkey and Georgia. The first three species are externally very similar, but can easily be separated by their genitalia. S.chrysotosella looks externally quite distinct from the other species both by its wingspan and wing pattern, but its genitalia match well the configuration for the genus, being most similar to those of S.fuscescens. The host plant is known only for S.desertus, whose larva feeds on Rheum sp. (Polygonaceae) in Kazakhstan (Falkovitsh and Bidzilya 2009). The adults of S.chrysotosella were observed around Jasminumfruticans L. (Oleaceae) in all three localities where this species was recorded (Junnilainen 2016). As a result of studying collected material in the Staatliches Museum für Naturkunde in Karlsruhe, five plain coloured, rather narrow-winged greyish black specimens of Gelechiidae were discovered amongst material from Afghanistan and Iran. Their assignment to the genus Spiniphallellus was proved by the study of the genitalia. It turned out that they represent two different species, which do not match any known species in the genus. Their description is given below.


Zootaxa ◽  
2018 ◽  
Vol 4379 (2) ◽  
pp. 295
Author(s):  
AIHUAN ZHANG

Six species of Pseudacroclita Oku are reported from China, two of which are described as new: P. damingshana, sp. nov., and P. mastoidea, sp. nov. Photographs of the adults and genitalia of the two new species are provided. Two keys to Chinese species of Pseudacroclita are given, one based on male genitalia and the other on female genitalia. Non-deciduous spiculate cornuti in the phallus are reported for the first time in Pseudacroclita. All specimens examined are deposited in the Insect collection, Nankai University, Tianjin, China. 


Phytotaxa ◽  
2015 ◽  
Vol 231 (3) ◽  
pp. 260 ◽  
Author(s):  
BING LIU ◽  
SAÚL BLANCO ◽  
BANGQIN HUANG

Two new species in the diatom genus Nitzschia were found in the middle intertidal zone, Xiamen Bay, southern China. Both new taxa belong to the subgenus Nitzschia, as inferred from the presence of a canal-raphe-conopeum system. The valves of both new species are dorsiventral. In Nitzschia arierae sp. nov., the raphe system is positioned centrally, the conopea fuse to the valve face at supporting points, and the zone of valve face subtended by the conopeum has areolae. In Nitzschia gaoi sp. nov., the raphe system is centrally positioned or slightly eccentric, two large conopea extend out from near the raphe while two small conopea extend out from each transverse costa and cover the striae, most part of the zone of valve face subtended by the conopeum has no areolae, and there are two long produced rostrate apices that both arch toward the ventral side or one apex arches and the other is straight. Both new species are epipelic forms inhabiting the coastal environment.


1969 ◽  
Vol 59 (1) ◽  
pp. 77-80
Author(s):  
J. D. Bradley

Two species of Lepidoptera reared from galls caused by a Thysanopteran, Vuilletia houardi (Vuillet), on the shrub Guiera senegalensis (Combretaceae) in Northern Nigeria are described as new. One is named Eublemma guiera sp. n. and belongs in the subfamily Eustrotiinae of the Noctuidae, and the other Anarsia guiera sp. n. and belongs in the Gelechiidae. The adults and male and female genitalia of both species are illustrated.


1990 ◽  
Vol 21 (4) ◽  
pp. 405-414
Author(s):  
Bengt Å. Bengtsson

AbstractThe Scythris fuscoaenea species-group of Scythrididae, exclusively confined to Europe, is defined and reviewed. It includes the following species: fuscoaenea (Haworth, 1828), parafuscoaenea sp. n., vartianae Kasy, 1962, tenuivittella (Stainton, 1867), vittella (O. G. Costa, 1836), dissimilella (Herrich-Schäffer, 1855), derrai sp. n. and traugotti sp. n. Scythris parafuscoaenea sp. n. is closely related to fuscoaenea and is found in Spain and France. The other two new species are hitherto only recorded from isolated localities, A. derrai sp. n. from Sardinia and A.traugotti sp. n. from southern Spain. Male and female genitalia of all species are illustrated.


Zootaxa ◽  
2007 ◽  
Vol 1434 (1) ◽  
pp. 51 ◽  
Author(s):  
ANNA MURRAY ◽  
GREG W. ROUSE

Two new species of Terebrasabella Fitzhugh & Rouse, 1999 are described from eastern Australia. Terebrasabella hutchingsae sp. nov., was found from preserved coral rock debris collected in 1977 on the outer Barrier Reef near Lizard Island, Queensland. Terebrasabella fitzhughi sp. nov., was found alive in burrows in and among spirorbin serpulid tubes on intertidal rocks in Tasmania in 1996. Both species were found in mucoid tubes, and brood their young in a manner similar to the only other described species of Terebrasabella, T. heterouncinata Fitzhugh & Rouse, 1999. Terebrasabella hutchingsae sp. nov., is exceptional as it possesses a type of thoracic neurochaetal uncinus different from the other two species, and which is similar to the notochaetal acicular “palmate hook” seen in Caobangia. Descriptions of both species are given, and the diagnosis for Terebrasabella is emended. Larval and chaetal morphology and relationships among of the three known Terebrasabella spp. are discussed.


1898 ◽  
Vol 30 (1) ◽  
pp. 12-14 ◽  
Author(s):  
J. D. Tinsley

Orthezia cheilanthi, n. sp.—Adult ♀ Length, 3.5 mm. Width, 3-3.5 mm. Length + ovisac, 6-8 mm. Width of Ovisac 3-4 mm. Body above covered with whtie secretion, which forms lateral and sub. dorsal longitudinal keels. A well-defined subdorsal furrow between the keels and the lateral margin formed by 3 or more rows of paltes; these are smaller than the projecting marginal plates, which are flattened; caudal plate and the 3 or 4 plates on each side of it very little longer than the lateral plates. The structure of the secretion is compact; in most of the other species of Orthezia it is fluffy.


Author(s):  
Carol Simon ◽  
Guillermo San Martín ◽  
Georgina Robinson

Two new species of South African Syllidae of the genusSyllisLamarck, 1818 are described.Syllis unzimasp. nov. is characterized by having unidentate compound chaetae with long spines on margin, a characteristic colour pattern and its reproduction by vivipary. Vivipary is not common among the polychaetes, but most representatives occur in the family Syllidae Grube, 1850 (in five otherSyllisspecies, two species ofDentatisyllisPerkins, 1981 and two species ofParexogoneMesnil & Caullery, 1818).Syllis unzimasp. nov. differs from the other viviparous species in having large broods (>44 juveniles) which develop synchronously. Development of the juveniles is similar to that of free-spawningSyllisspecies, but the appearance of the first pair of eyespots and the differentiation of the pharynx and proventricle occur later inS. unzima.Syllis amicarmillarissp. nov., is characterized by having an elongated body with relatively short, fusiform dorsal cirri and the presence of one or two pseudosimple chaeta on midbody parapodia by loss of blade and enlargement of shaft.Syllis unzimasp. nov. was found in high densities on culturedHolothuria scabraJaeger, 1833 with single specimens found on a culturedCrassostrea gigasThunberg, 1793 and on coralline algae, respectively, whileS. amicarmillariswas found mainly in sediment outside an abalone farm and less frequently on culturedHaliotis midaeLinnaeus, 1758. We discuss the possible benefits of the association withH. scabratoS. unzimasp. nov.


Zootaxa ◽  
2021 ◽  
Vol 4958 (1) ◽  
pp. 34-44
Author(s):  
DAN A. POLHEMUS

Two new species of Ocyochterus are described, O. graziae from Ecuador, and O. gilloglyi from Panama, and compared to the other two Andean species previously known in the genus. Dorsal habitus and anterior head photos are provided for all described species of Ocyochterus, and photomicrographs are provided for the male genitalic structures of O. graziae and O. gilloglyi. A distribution map is provided for all species in the genus. 


Zootaxa ◽  
2005 ◽  
Vol 851 (1) ◽  
pp. 1 ◽  
Author(s):  
HEOK HEE NG ◽  
KELVIN K.P. LIM

The identity of the poorly known bagrid catfish Pseudomystus moeschii (Boulenger, 1890) is clarified and the species redescribed. Two new species of closely related bagrid catfishes are also described: Pseudomystus carnosus from the Way Seputih River drainage in the province of Lampung in the southern tip of Sumatra, and P. fumosus from the Pahang River drainage in eastern Peninsular Malaysia. Pseudomystus carnosus, P. fumosus and P. moeschii can be distinguished from congeners in having an enlarged posterior process of the post-temporal, presence of long hair-like epithelial projections on the skin and long tubular extensions of the sensory pores. Pseudomystus carnosus differs from the other two species in having a pointed (vs. rounded) tip of the nuchal shield, while P. fumosus differs from the other two species in having very well developed procurrent caudal rays which are sinuously curved along the anterior edges (vs. less developed procurrent caudal rays that slope evenly along the edges). A lectotype is designated for P. moeschii.


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