A rare diving beetle from Baltic amber:Hydrotrupes prometheusnew species reveals former widespread distribution of the genus (Coleoptera, Dytiscidae)

2014 ◽  
Vol 88 (4) ◽  
pp. 814-822 ◽  
Author(s):  
R. Antonio Gómez ◽  
Anders L. Damgaard

A new species in the extant genus,HydrotrupesSharp,H. prometheusn. sp., (Coleoptera, Dytiscidae) is described from Baltic amber (Eocene) based on examination of a single female specimen. This description represents one of a limited number of diving beetle taxa described from fossiliferous amber and is currently the oldest known fossil assigned to Agabinae. Based on this specimenHydrotrupesis at least 40 million years old. The occurrence ofHydrotrupesduring the Eocene suggests that the current disjunct distribution of livingHydrotrupesspecies occurring in western North America and eastern China is a relict of former widespread distribution in the northern continents. Considering the age of this fossil and its similarity to living members of the genusHydrotrupes, the conservation of morphology in this lineage of diving beetles is notable. Key morphological characters of the new species are illustrated, and the significance of this discovery for understanding Agabinae evolution and the biogeography of this previously hypothesized trans-Beringian lineage is discussed.

Zootaxa ◽  
2018 ◽  
Vol 4403 (3) ◽  
pp. 540 ◽  
Author(s):  
GABRIEL E. RAMOS-TAFUR

A new species of deep water alpheid shrimp, Alpheus luiszapatai sp. nov., from Arusí, Chocó, Pacific coast of Colombia is described. The single female known was collected between the discarded bycatch of deep water shrimp trawls dedicated to the commercial fisheries of the “coliflor” shrimp Solenocera spp. This new species is placed putatively in the Alpheus brevirostris (Olivier, 1811) species group, and share some external morphological characters with Alpheus hephaestus Bracken-Grissom & Felder, 2014. It can be differentiated by the shape and ornamentation of major and minor chelipeds, the propodi and dactyli of third to fifth pereopods, the diaresis of uropodal exopod, the length of the rostral carina, color in life and bathymetric distribution. Additional comparison with another congeners pertaining to this species group complex from the eastern Pacific, western Atlantic and other oceanographic regions is discussed. A key for Alpheus brevirostris species group from the eastern Pacific is presented. 


Zootaxa ◽  
2012 ◽  
Vol 3221 (1) ◽  
pp. 48 ◽  
Author(s):  
JOHN E. McCOSKER ◽  
DOUGLAS J. LONG ◽  
CAROLE C. BALDWIN

We describe Bythaelurus giddingsi sp. nov. based on 7 specimens collected using the submersible Johnson Sea-Link fromdeepwater (428–562 m depth) areas of the Galápagos Islands. It is presumed to be endemic to the archipelago. The newspecies differs from its congeners in its coloration, the length of its anal-fin base, and in other morphological characters. The disjunct distribution of species of the widely-distributed Indo-Pacific genus Bythaelurus is discussed.


ZooKeys ◽  
2020 ◽  
Vol 931 ◽  
pp. 35-48
Author(s):  
Sujian Pei ◽  
Huiqin Ma ◽  
Haipeng Liu ◽  
Yanmin Lu ◽  
Xiaojie Hou

Lithobius (Ezembius) varioporussp. nov. (Lithobiomorpha, Lithobiidae), recently discovered from Longquanguan Town, Fuping County, Baoding City, Hebei Province, China, is described. Morphologically it resembles to Lithobius (Ezembius) laevidentata Pei, Ma, Hou, Zhu & Gai, 2015 from the Xinjiang Autonomous Region, but can be easily distinguished from the latter by the Tömösváry’s organ, slightly smaller than the adjoining ocelli, no secondary sexual modifications on male tibia 14 and 15, posterior accessory spine of legs 14 and 15 present and the number of coxal pores varying considerably from three to eight. The main morphological characters of the known Chinese species of the subgenusEzembius Chamberlin, 1919 based on adult specimens are presented.


Zootaxa ◽  
2021 ◽  
Vol 4985 (1) ◽  
pp. 81-90
Author(s):  
JERRY L. COOK

The family Pleidae is represented in Australia only by members of the genus Paraplea. Paraplea brunni (Kirkaldy, 1898) has a widespread distribution in Australia and is also known from New Guinea. Paraplea halei (Lundblad, 1933) appears to be an endemic species occurring only in the southeastern part of Australia. The widespread species P. liturata (Fieber, 1844) occurs in Australia but only in the Northern Territory and Western Australia. The description of P. bifurcata n. sp. documents a fourth pleid species, being known only from the Northern Territory. Paraplea bifurcata n. sp. is easily differentiated from other species of Paraplea by having a bifurcated abdominal keel. An identification key and discussion of morphological characters of the four species of Paraplea from Australia is given. 


Zootaxa ◽  
2011 ◽  
Vol 2734 (1) ◽  
pp. 63 ◽  
Author(s):  
ARTHUR ANKER

A miniature alpheid shrimp, Leslibetaeus caribbaeus n. sp., is described on the basis of a single female specimen collected in Sandy Bay, Tobago, in 1992. The new species is closely related to L. coibita Anker, Poddoubtchenko & Wehrtmann, 2006 from the Pacific coast of Panama, the type species and the only other known species of Leslibetaeus Anker, Poddoubtchenko & Wehrtmann, 2006, differing from it in several morphological characters. With the discovery of L. caribbaeus n. sp., Leslibetaeus becomes a genus with transisthmian (= amphi-American) distribution. In addition, L. coibita is reported for the first time since original description and its range is extended by 400 km southwards. The generic diagnosis of Leslibetaeus is slightly emended.


ZooKeys ◽  
2020 ◽  
Vol 974 ◽  
pp. 23-29
Author(s):  
Zhuomiao Li ◽  
Tingting Yao ◽  
Zhihong Xu ◽  
Ling Meng ◽  
Baoping Li

A new species, Cheiloneurus nankingensissp. nov., from Eastern China is described. It is similar to C. arabiacus Hayat but distinct from it in a number of morphological characters. It is a hyperparasitoid with the encyrtid wasp Aenasius arizonensis Girault, 1915 as the primary host and the cotton mealybug Phenacoccus solenopsis Tinsley, 1898 (Hemiptera: Pseudococcidae) as the secondary host. A key to all seven species of Cheiloneurus known from China is presented.


2020 ◽  
Vol 45 (2) ◽  
pp. 328-333
Author(s):  
Camila Alcantara ◽  
Gleison Soares ◽  
Francisco de Assis Ribeiro dos Santos ◽  
Marccus Alves

Abstract—Justicia rubrobracteata, a new species from northeastern Brazil, is described and illustrated. The new species is morphologically similar to J. aequilabris due to its shrubby habit, and terminal and axillary spicate inflorescences with red flowers. However, J. rubrobracteata is differentiated mainly by the shape and color of its bracts and bracteoles as well as an orangish macula in the corolla, and a torulose capsule. In addition, J. rubrobracteata is only known from northeastern Brazil, from the states of Paraíba and Rio Grande do Norte, while J. aequilabris is widely distributed in Bolivia, Brazil, and Paraguay. A table with the main morphological characters of both species is included, as well as photographs, a key to species of Justicia for the states of Paraíba and Rio Grande do Norte in northeastern Brazil, a distribution map of both species, and conservation data for the new species.


2020 ◽  
Vol 29 (1) ◽  
pp. 138-154
Author(s):  
R.V. Smirnov ◽  
O.V. Zaitseva ◽  
A.A. Vedenin

A new species of Pogonophora obtained from one station at a depth of 25 m from near the Dikson Island in the Kara Sea is described. Galathealinum karaense sp. nov. is one of the largest pogonophorans, the first known representative of the rare genus Galathealinum Kirkegaard, 1956 in the Eurasian part of the Arctic Ocean and a highly unusual finding for the desalted shallow of the Yenisey Gulf. Several characters occurring in the new species are rare or unique among the congeners: under-developed, hardly discernible frills on the tube segments, extremely thin felted fibres in the external layer of the tube, and very faintly separated papillae in the anterior part of the trunk. Morphological characters useful in distinguishing species within the genus Galathealinum are defined and summarised in a table. Diagnosis of the genus Galathealinum is emended and supplemented by new characters. Additionally, three taxonomic keys are provided to the species of Galathealinum and to the known species of the Arctic pogonophorans using either animals or their empty tubes only, with the brief zoogeographical information on each Arctic species.


2011 ◽  
Vol 20 (1) ◽  
pp. 85-95 ◽  
Author(s):  
S.A. Belokobylskij ◽  
T.S. Kostromina

Two braconid genera from the subfamily Alysiinae, Lodbrokia Hedqvist, 1962 and Asyntactus Marshall, 1898, are recorded in the fauna of Russia and in the Asian continent for the first time. A new species Lodbrokia uralica sp. nov. is described from the Urals, and a key to species of this genus is provided. Redescriptions of the female and male of Asyntactus rhogaleus Marshall, 1898 with information about the level of variability of its morphological characters are given. Asyntactus sigalphoides Marshall, 1898 is synonymised with A. rhogaleus Marshall, 1898 (syn. nov.).


2019 ◽  
Vol 27 (4) ◽  
pp. 238-247
Author(s):  
Massoud Ranjbar ◽  
Narges Rahchamani

Scrophularia dianatnejadii Ranjbar & Rahchamani, a new species from Tehran Province in northern Iran, is described and illustrated. It is closely related to S. amplexicaulis Benth. and shares with it some diagnostic morphological characters such as habit, plant indument, phyllotaxy, and corolla shape and color. Both species are placed in Scrophularia L. sect. Mimulopsis Boiss. Macro- and micromorphological characters of the two are examined and compared. Pollen morphology of these species is investigated using SEM. Detailed descriptions, illustrations, distribution maps, and conservation status of both species are provided.


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