Structure Of Aedeagus Research Articles

More than Olceclostera bifenestrata: New species and morphology of immature stages of Olceclostera Butler, 1879 (Lepidoptera: Bombycoidea, Apatelodidae)

Apatelodidae is a family of Neotropical bombycoids that still needs to be studied in several aspects, as many groups of species have not yet undergone a careful systematic revision. On the other hand, recent studies showed that some species known to be widely distributed in fact form species complexes. Until now, Olceclostera bifenestrata Schaus, 1912, described from Costa Rica, supposedly has a wide distribution, reaching the south of Brazil. We reviewed specimens from South America identified as O. bifenestrata. Using morphological data and DNA barcodes, we discovered that South American specimens belong to four new species: Olceclostera jairanasp. nov., Olceclostera quilombolasp. nov., Olceclostera xetasp. nov. and Olceclostera wayanasp. nov. The four species can be distinguished mainly by characters of genitalia, mostly in aedeagus structures. However, wing characters (number of hyaline spots) and abdomen characters (number of patches of larger scales) may be useful for classifying species groups in Olceclostera. Additionally, we illustrate and describe for the first time all the life stages of an Olceclostera species, including its chaetotaxy and life history, and provide the first SEM images of the egg of an Apatelodidae species. We present a discussion about the morphological characters of adults and immatures and their relevance to the systematics of Apatelodidae.

New species of the genus Carpelimus Leach, 1819 (Coleoptera: Staphilinidae: Oxytelinae) from Moluccas

Carpelimus (Trogophloeus) nigerfrontis sp. n. is described and illustrated from the Moluccas (Indonesia). By flattened body and light brown head with a black anterior frons the new species is similar to species of the closely related genus Mendaxinus Gildenkov, 2004 but according to the structure of the 3-segmented tarsus, aedeagus and spermatheca it undoubtedly belongs to the genus Carpelimus Laech, 1819. The new species differs from all known species of Carpelimus by the structure of aedeagus.

New species of the genus Thinodromus Kraatz, 1857 (Coleoptera: Staphylinidae: Oxytelinae) from southeastern China

Thinodromus (s. str.) stockyus sp. n. is described and illustrated from Fujian province of China. New species has a great similarity with representatives of Thinodromus sericatus species group, however, differs by stockier body, by rather narrow pronotum, and by absence of a tooth on its lateral margin at the base. Moreover, it differs from majority species of this group by the rather distinct punctation of body. New species reliably differs from all known species of Thinodromus Kraatz, 1857 by the structure of aedeagus.

The King's Lace Bug Recaredus rex Distant, 1909 (Hemiptera: Heteroptera: Tingidae): Systematic Position, First Palaearctic and Afrotropical Records, and Ecological Niche Modelling.

Simple SummaryLace bugs (Tingidae) are known for their spectacular bodily appearance; the pronotum and hemelytra of the adult specimens are lacelike, with a delicate network of areolae that resemble lace. The species are phytophagous and always feed on a specific plant or groups of closely related plants. Therefore, they are recognised as mono- or oligophagous bugs, whose feeding activities may cause significant injury to plant pods and leaves. Lace bugs are distributed worldwide and reported in all continents except Antarctica. Although most of the lace bug species are distributed in a particular zoogeographical region, some genera are widely known from the Holarctic region. However, species with a Palaeotropical distribution are scarce. In this study, based on new records and ecological niche modelling, we indicate that Recaredus rex, one of the most enigmatic lace bugs, has a possible Palaeotropical distribution. Moreover, we hypothesise that R. rex is an oligo- or polyphagous species. In addition, the systematic position of the genus Recaredus is discussed.The systematic position and actual distribution of Recaredus rex, for a long time one of the most enigmatic lace bug genus and species, is very obscure because only the type specimen and three other individuals from India are known to date. In the present paper, we report the first records of R. rex from the Palaearctic region (Iran) and tropical Africa (Ghana). Based on the occurrence localities and climatic variables, we predict potentially useful ecological niches for this species using Maxent software. The areas with the best environmental conditions for R. rex indicated in our studies suggest its possible Palaeotropical distribution. Moreover, we regard these results as a good starting point for further searches for specimens of this species. This might help verify the hypothesis of the broad Palaeotropical distribution of R. rex and its oligo- or polyphagy. In addition, the lace bug genus Recaredus, based on the diagnostic characteristics provided for the tribe Acalyptaini, and the structure of aedeagus, is transferred from the tribe Ypsotingini to the Acalyptaini. A key to all genera currently included in the latter tribe is also provided.

Descriptions and Comparison of Aedeagus and Spermatheca of Five Turkish Chrysomela Linnaeus, 1758 Species

The Aedeagus and spermatheca structures of Chrysomela collaris Linnaeus, 1758, Chrysomela populi Linnaeus, 1758, Chrysomela saliceti (Weise, 1884), Chrysomela tremula Fabricius, 1787 and Chrysomela vigintipunctata (Scopoli, 1763) species, widespread in Turkey, have been studied. Relationships between species by observing the structure of aedeagus and spermatheca which allow their accuracy species-level identification are detaily included in the study. A dichotomous key for the species of the genus Chrysomela Linnaeus,1758 present in Turkey, the first one for the country, is also provided (including genitals photos). Accordingly to what was observed in this study, aedeagus and spermatheca related characters can be used to easily distinglush the species of the genus Chrysomela present in Turkey.

Редкие и неизвестные ранее виды двукрылых рода Bibio Geoffroy, 1764 (Diptera, Bibionidae) Дальнего Востока России

The paper presents new data on the distribution of species from the genus Bibio Geoffroy, 1764 in the Far East of Russia. In particular, it examines a detailed imaginal morphology of 11 species from the genus Bibio. It is discovered that the position of the wing eye on the radial section of the wing, chaetotaxy of tergite 9 and cercus and the structure of aedeagus are effective additional diagnostic elements. Two new species for the fauna of Russia are registered: B. nigriclavipes Hardy et Takahashi, 1960 and В. singularis Hardy et Takahashi, 1960. The paper also provides an original key to the examined species.

Three new species of Rabigus Mulsant & Rey (Coleoptera, Staphylininae, Philonthina) from China

The paper reports three new species of the genus Rabigus Mulsant Rey from China, namely, Rabigus cuspus Fei Zhou, sp. nov. from Sichuan, Rabigus sagittus Fei Zhou, sp. nov. from Shanxi, Rabigus triquetrus Fei Zhou, sp. nov. from Beijing and Shanxi. For all species included we provide color plates of general morphology and detailed aedeagus structures.

A Taxonomic Position of Palpaenidea and an Identity of Galleruca pallipes (Coleoptera: Chrysomelidae: Galerucinae)

The primary type specimens of all three species classified to date in PalpaenideaLaboissière, 1933 were examined. Palpaenidea labeonisLaboissière, 1933 is synonymized with P. facialis (Jacoby, 1895). The type locality of P. facialis is discussed. Palpaenidea pallipes (Fabricius, 1801) is transferred to SermyloidesJacoby, 1884 and synonymized with Sermyloides pallicornis (Fabricius, 1801). Having cavitous head and enlarged maxillary palps, Palpaenidea is very similar to Palpoxena Baly, 1861, but the structure of aedeagus and male last abdominal ventrite show Palpaenidea closely related to Cerophysa Chevrolat, 1836 and its allies.

New and recent records of hawk moths (Lepidoptera: Sphingidae) from Seychelles, with a description of a new insular subspecies

In this study, we examine a recent sample containing two hawk moth species (Lepidoptera: Sphingidae) from Praslin and Mahé, Seychelles. It was widely accepted that the hawk moth species Temnora peckoveri (Butler, 1876) has a disjunctive range covering Madagascar and the Inner Seychelles. However, the Seychelles population of what was thought to be Temnora peckoveri shares a set of diagnostic morphological differences from both this species and T. fumosa (Walker, 1856) in the male genitalia structure. In particular, it remotely resembles Temnora fumosa based on the structure of aedeagus but differs from T. fumosa and T. peckoveri with respect to the harpe shape. Based on this evidence, we describe Temnora fumosa seychellensis Bolotov & Spitsyn ssp. nov. as a subspecies with restricted range, being endemic to the Inner Seychelles. The range of this subspecies covers Praslin (first record), Mahé, Silhouette, La Digue, Cousine, and Denis. Additionally, we report on recent occurrences of Agrius convolvuli (Linnaeus, 1758) from Praslin (second record) and Mahé. The adult moths were recorded feeding on inflorescences of Dracaena reflexa var. angustifolia Baker (Asparagaceae) for the first time. Finally, we present a complete list of Temnora fumosa seychellensis ssp. nov. and Agrius convolvuli occurrences from Seychelles.

Three new species of the genus Nazeris (Coleoptera, Staphylinidae, Paederinae) from China.

This paper reports three new species of the genus Nazeris Fauvel, 1873 from mainland China, namely Nazeris mahuanggouensis Su, Li and Zhou, sp. nov. and Nazeris zhouhaishengi Su, Li and Zhou, sp. nov. from Sichuan Province, Nazeris wuluozhenensis Su, Li and Zhou, sp. nov. from Guizhou Province. For all species included we offer color plates of normal light photos for general morphology and detailed aedeagus structures.

Six new species of the genus Nazeris (Coleoptera, Staphylinidae, Paederinae) from China.

This paper reports six new species of the genus Nazeris Fauvel, 1873 from mainland China, namely Nazeris lushanensis sp. nov., N. cuscutus sp. nov., N. baoxingensis sp. nov. and N. megalocephalus sp. nov. from Sichuan Province, N. fulongensis sp. nov. from Guangxi Province, and N. tarandoides sp. nov. from Hubei Province. For all new species included we offer color plates of normal light photos for general morphology and detailed aedeagus structures and one plate of heads of scan electromicroscope photos.

Tropiorhynchus annandalei (Coleoptera: Scarabaeidae: Rutelinae), a new species from Maharashtra, India.

Tropiorhynchus annandalei new species (Coleoptera: Scarabaeidae: Rutelinae: Anomalini: Anisopliina) from Bhimshankar Wildlife Sanctuary, Pune district, Maharashtra State, India is described, diagnosed, and illustrated. The new species is compared with all its congeners: Tropiorhynchus orientis (Newman, 1838), T. podagricus (Burmeister, 1844), and T. umbrinus Machatschke, 1954. The newly described species differs from all its congeners by the unique structure of aedeagus, sculpturing of pronotum, medially smooth pygidial surface, and elytral markings. An illustrated key to the species of the genus Tropiorhynchus Blanchard, 1851 is also provided.

A new species of the genus Aspidiotes Schoenherr, 1847 (Coleoptera: Curculionidae: Tanymecini) from Middle Anatolia (Turkey).

A new species of Aspidiotes Schoenherr, 1847 (Curculionidae: Tanymecini) from Turkey is described and illustrated. Aspidiotes (Phaenognathus) candani sp. nov. is closely related to A. anatolicus (Colonnelli) but can be separated by eye shape, form of pronotum, form of setae on disc of elytra, surface morphology of scales, structure of aedeagus (in dorsal view) and form of spermatheca.

Two Omaliine Species (Coleoptera: Staphylinidae) New to Korea

A taxonomic study of two omaliine genera Acruliopsis Zerche and Omalium Gravenhorst in Korea is presented. Two species (Acruliopsis ussuriensis Zerche and Omalium japonicum Sharp) are reported for the first time in Korea. Diagnoses of those two genera with redescriptions of the species are presented. Acruliopsis ussuriensis is distinguished by more or less short elytra, a pair of conspicuous processes on male sternite VII and emargination of outer lateral margin of paramere at base. Omalium japonicum is distinguished by brown elytra and structure of aedeagus with swollen median lobe and expanded paramere. Habitus photographs and illustrations of diagnostic characters are provided.

Two New Species of the Tribe Helopini (Coleoptera: Tenebrionidae) from Artvin Province, Turkey

Abstract. Cylindrinotus tchorokhicus sp. nov. and Probaticus (Pelorinus) banaszkiewiczae sp. nov. are described from northeastern Turkey (Artvin Province). The first species is similar to C. constrictus (Seidlitz, 1896), but differs from it by flattened lateral sides of pronotum, strongly thickened outer margins and base of pronotum, more shining body and structure of aedeagus. The new species of Probaticus Vauloger, 1900 is close to P. corrugatus (Seidlitz, 1896), but differs from it by the structure and punctation of pronotum and propleura, structure of elytra and genitalia of male, and pubescence on anal sternite.

A new species of the weevil genus Theodorinus Korotyaev, 1982 (Coleoptera: Curculionidae: Ceutorhynchinae) from Spain

Theodorinus (Atlantonyx) lopezcoloni sp. nov. is described from Spain, closely related to Th. latipennis (Pic, 1905) from Algeria and Morocco, but differing in the noticeably narrower body, uniformly flat elytral intervals, narrower tarsi with 3rd tarsomere only slightly wider than 2nd, somewhat less convex scales, and absence of erect setae in the depression on anal ventrite in male. In the shape of body, evenly flat elytral intervals, position of the tubercle on 5th interval, and absence of erect setae on male anal ventrite the new species is more similar to the Moroccan Th. peyerimhoffi Korotyaev, 1994. It differs, in addition to the structure of aedeagus, in the broader, more widely overlapping scales on the body, much narrower odd-numbered elytral intervals than even-numbered ones, and, prima facies, in the still more advanced denticle on the 5th interval of elytra.

Function of Prolonged Copulation in Nysius huttoni White (Heteroptera: Lygaeidae) Under Male-Biased Sex Ratio and High Population Density

Prolonged copulation as a response to sex ratio and population density has been demonstrated for a number of species but the functions behind it remain controversial. It is difficult to determine the function of prolonged copulations without examining the mechanisms of sperm transfer and storage, and fertilization success–copulation duration relationships. Here, we report our work on a polygamous seed bug, Nysius huttoni White (Heteroptera: Lygaeidae), where we manipulated the population density and sex ratio for a series of mating trials, quantified the relationship between copulation duration and ejaculate amount as well as reproductive outputs, and examined the sperm transfer and storage mechanisms. Our results suggest that males prolong copulations to increase their fertilization success relative to their rivals in response to high sperm competition intensity under male-biased sex ratio and high population density. The mechanism behind the positive correlation between copulation duration and fertilization success may be attributed to the characteristic structures of aedeagus and spermatheca in this insect, which allow direct transfer of sperm to a storage site of fixed size during copulation.

Taxonomy on the cicindeloides group of the genus Stenus Latreille (Coleoptera: Staphylinidae: Steninae) of China

We study the Stenus cicindeloides species group in China, which belongs to the subgenus Hypostenus Rey 1884 (Coleoptera: Staphylinidae: Steninae). This species group is defined and some characters like the inner structures of aedeagus are emphasized. Two new species of this group are described: Stenus (Hypostenus) primivenatus n. sp. and S. (H.) yiae n. sp. A key to all species of the cicindeloides group of China is preposed. Important morphological characters like those of 8th and 9th abdominal sternites of male, aedeagus, spermatheca and hind wings are illustrated.

A genitália externa dos machos no complexo Triatoma phyllosoma (Burm.) espécies mexicanas transmissoras da doença de Chagas (Hemiptera, Reduviidae)

Foram estudadas as genitálias externas masculinas das cinco espécies que constituem o complexo phyllosoma: Triatoma phyllosoma (Burmeister, 1835), T. pallidipennis (Stal, 1872), T. longipennis Usinger, 1939, T. picturata Usinger, 1939 e T. mazzottii Usinger, 1941, todas encontradas naturalmente infectadas pelo Trypanosoma cruzi, e, com exceção de T. picturata, colonizando no domicílio humano. São espécies muito próximas, não só pelo aspecto externo, como pela área geográfica onde ocorrem, a região ocidental do México. As estruturas constituintes dessas genitálias foram analisadas comparativamente, com o intuito de ampliar o estudo das aludidas espécies, criando informações morfológicas adicionais à taxonomia atualmente aceita. Foram evidenciadas quatro estruturas no edeago: falosoma, suporte da falosoma, processo do endosoma e vesica; uma no aparelho articular, o processo do gonoporo; e outra no pigóforo, o processo do pigóforo. Essas estruturas apresentam pequenas variações no tamanho e na forma, acentuando a proximidade das espécies entre si e a dificuldade existente para a compreensão perfeita do status taxonômico de cada uma. O trabalho completar-se-á com a discussão dos já conhecidos aspectos morfológicos externos e os evidenciados pela morfologia das genitálias.

On the taxonomy of some West European and Macaronesian Heterothops Stephens (Coleoptera: Staphylinidae)

AbstractSome important characters in Heterothops Stephens are treated: density of punctuation, chaetotaxy of the head and structure of aedeagus. Controversial taxa are critically compared which gives the following results: H. niger Kraatz is a subspecies of praevius Erichson, H. brunnipennis auct. from Sweden is not identical with H. brunnipennis Kiesenwetter but with H. minutus Wollaston from Madeira. Lectotypes are designated for H. brunnipennis and H. minutus. Macaronesian endemics are H. canariensis n.sp. (Canary Is.) and H. wollastoni n.sp. (Cape Verde Is.). Beside the species already mentioned also binotatus Gravenhorst, quadripunctulus Gravenhorst and dissimilis Gravenhorst are treated. All nine species are keyed.