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3.
In the present paper, we review the fossil record of the Hydrometridae (Hemiptera, Gerromorpha) and present a new species from the Early Cretaceous Crato Formation of Northeastern Brazil, Christometra paradoxa gen. et sp. nov. This species is based on a new specimen (a female), as well as a previously figured one (a male), providing a rare case of preservation of sexually dimorphic features in the fossil record. This is the third species coming from this deposit, which is Aptian-Albian in age and the oldest deposit to have yielded hydrometrids so far. Only five other Mesozoic species are known, being slightly younger in age (Cenomanian). So far, phylogenetic analyses have recovered Cretaceous hydrometrids as basal relative to Cenozoic genera but, Christometra paradoxa exhibits several advanced characteristics that unite it in a clade together with the extant genera Hydrometra and Bacillometroides, in a more derived position than any previously known fossil hydrometrid. The present publication is registered in the Official Register of Zoological Nomenclature (Zoobank), under the registration number http://zoobank.org/urn:lsid:zoobank.org:pub:3CFA88AB-3CBC-4CCC-8196-698ECC863947. The registration number for the nomenclatural act of the genus is http://zoobank.org/urn:lsid:zoobank.org:act:84744426-1259-4864-8E3F-E43E0DAB2021, and that of the species is http://zoobank.org/urn:lsid:zoobank.org:act:23700AB2-F7AD-4F50-A5E7-CB28868079B2. 相似文献
7.
Seventy-five species of caddisflies were found near eight waterfalls in the Tai Rom Yen National Park and the Khao Luang National Park, within Nakhon Si Thammarat Range, in southern Thailand. Rhyacophila suratthaniensis sp. n. is described and figured, based on adult males. Rhyacophila suratthaniensis sp. n. is distinguished from other species of the genus by the shape of its paramere: their basal part is broader than the apical one and is separated from it by a step; apex of the paramere bears many strong spines, which are arranged like in a toothbrush. Occurrence of Trichoptera species in the observed and neighbouring areas is discussed. http://zoobank.org/urn:lsid:zoobank.org:pub:336401B5-DAAA-4818-90EA-5DCB1944D1F0 相似文献
15.
A new species of the dipteran family Sciomyzidae is described from Iran: Limnia kassebeeri sp. n., which is similar to L. unguicornis (Scopoli, 1763) and L. paludicola Elberg, 1965, but differs from them by the reticulate pattern on the anal cell, the presence of one small seta on the anepisternum, in addition to fine hairs and the features of the genitalia. http://www.zoobank.org/urn:lsid:zoobank.org:pub:FCD0AD91-E21D-44CA-9D11-90DE5A92F52D 相似文献
16.
Larissamya comta gen. n., sp. n., is described from Kuwait Bay, northern Arabian Gulf. The hinge is identical to that seen in Kurtiella and Montacutona but the spined dorsal margin is unique. Anatomically Larissamya differs from Kurtiella in retaining both gill demibranchs and from both Kurtiella and Montacutona in having greatly unequal adductor muscles. Co-occurrence and density data suggest that L. comta may be associated with the ophuroid Amphiura fasciata. http://www.zoobank.org/urn:lsid:zoobank.org:pub:ECCB79FC-6EB2-4693-B1D4A014CB17C6D8 相似文献
17.
A new species of the family Zerconidae, Zercon persicus sp. n., is described based on female and male morphological characters. It was collected in West Azarbaijan province (northwestern Iran). Idiosomal chaetotaxy, poroidotaxy and related notations are illustrated. The similarities and differences between the related species within the genus are discussed. Records of some other Zercon species from the province are given for the first time. http://www.zoobank.org/urn:lsid:zoobank.org:pub:3D1122C7-2B86-40D2-974E-EE69035A2413 相似文献
20.
A new species of camaenid land snail, Vulnus wallacei Páll-Gergely, Otani & Hosoda n. sp. is described from Nusa Penida and Lombok Islands, Indonesia. The new species is putatively classified into the genus Vulnus, which is only known so far from the Northern Maluku Islands. The genital anatomy, especially the presence of a well-developed penial sheath in V. wallacei, suggests a close relationship with Australian camaenids. However, the molecular phylogeny based on partial cytochrome c oxidase I, and 16S and 28S ribosomal RNA genes shows that the new species falls outside the cluster of all Australian Camaenidae. http://www.zoobank.org/urn:lsid:zoobank.org:pub:D28554D0-3578-4E95-8849-09EAFB7D30F7 相似文献
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