scholarly journals Comparative morphology of the endophallic structures of the genus Laius (Coleoptera, Melyridae), with the descriptions of three new species

Author(s):  
Hiroyuki Yoshitomi

The endophallic structure of the genus Laius is studied and discussed based on the examination of 19 species from Asia to the Indian Ocean. The structure contains two primary sclerites (named gonoporal piece and ligula), a secondary sclerite on the basal part of the gonoporal piece (named additional sclerite) in some species, and a membranous basal area closely covered with many spines (named spinous area). Five species groups are recognized based on the morphology of the endophallic sclerites. The sympatric species have different body sizes and quite distinguishable endophallic sclerites (= different species group), while the allopatric species have overlapping body sizes and similar endophallic sclerites (= same species group). Three new species are described and six previously known species are redescribed with endophallic sclerites, and the descriptions of endophallic sclerites of the remaining ten species are added. The larva of Laius rodriguesensis sp. nov. is also described. The genus Nossibeus Evers, 1994 is synonymised with Laius Guérin-Méneville, 1830.

Crustaceana ◽  
1997 ◽  
Vol 70 (6) ◽  
pp. 653-675 ◽  
Author(s):  

AbstractThree new species of the family Pontellidae, Labidocera javaensis, L. muranoi and Pontella labuanensis, are described and illustrated from specimens collected in coastal waters of Java, Indonesia, and their relationships to related species are discussed. Labidocera javaensis, which belongs to the Labidocera pectinata-group, is distinguishable from other species of this group by a combination of characters of the genital complex and the fifth legs in the female and of the fifth metasomal somite, the first urosomal somite, and the fifth legs in the male. It seems to be a neritic species inhabiting coastal waters shallower than 15 m in depth, and within 1 km offshore. Labidocera muranoi, which was collected from Cilacap Bay, a mangrove estuary facing the Indian Ocean, belongs to the Labidocera kroyeri-group and is distinguished from other species of this group by the urosomal somites and the fifth legs in the female and by the fifth metasomal somite and the fifth legs in the male. This may be an endemic species which has a preference for low salinities. Pontella labuanensis does not belong to any of the known three species-groups of Indo-West Pacific Pontella, in having the symmetrical genital somite and the exopods of the fifth legs virtually naked in the female, and the rostrum with double convex lenses and the exopods of the fifth legs with two subequal thumbs, in the male. The establishment of a new species-group, the P. labuanensis-group, is proposed.


Zootaxa ◽  
2021 ◽  
Vol 5061 (2) ◽  
pp. 340-352
Author(s):  
MARCOS FIANCO ◽  
OSCAR J. CADENA-CASTAÑEDA ◽  
NEUCIR SZINWELSKI ◽  
LUIZ R. R. FARIA

Three new species of Anaulacomera are described, Anaulacomera (Anaulacomera) mariellae sp. n. and Anaulacomera (Anallomes) arlindoi sp. n., belonging respectively to the Inermis and Lanceolata species group, and Anaulacomera angelinae sp. n., placed as incertae sedis. The individuals were collected at the Iguaçu National Park and adjacent small fragments of Atlantic Forest, in southwestern Paraná state, Brazil. The description was based on external morphology of males. We also present distribution maps for the species of the Inermis and the Lanceolata species groups.  


Zootaxa ◽  
2021 ◽  
Vol 4942 (4) ◽  
pp. 583-591
Author(s):  
FABIANO STEFANELLO

The giant water bug fauna from tropical South America remains poorly known. Three species of Belostoma Latreille (Belostoma fittkaui De Carlo, B. sayagoi De Carlo and B. hirsutum Roback & Nieser) have been cited only a few times in the literature. These three species are remarkable since they represent an extreme variation for the genus, with article II of the labium distinctly shorter than article III. Here, the synonymy of B. hirsutum with B. sayagoi is proposed based on examination of type material and additional specimens. Further, B. fittkaui and B. sayagoi are redescribed, including discussion about comparative morphology with congeners. A new species group is proposed for these species and a key to the Belostoma species groups is provided. Distribution records are also updated. 


Zootaxa ◽  
2009 ◽  
Vol 2213 (1) ◽  
pp. 1-46 ◽  
Author(s):  
MATTHEW J. COLLOFF

The morphology of the genus Scapheremaeus Berlese, 1910 is reviewed and characters of taxonomic utility delineated. Based on the morphological review, some 13 species-groups are outlined based on major morphotypes. There are two main categories: i) species that have a complete circumdorsal scissure with plicate microsculpture on the circumnotogastral plate and strongly contrasting microsculpture (foveolae, ridges or tubercles) on the centrodorsal plate (plicate species-groups), and ii) species with the circumdorsal scissure complete, incomplete or absent but with little or no contrast in microsculpture between the central and lateral regions: typically both regions foveolate or reticulate (non- plicate species-groups). A catalogue of world species of Scapheremaeus is provided. Scapheremaeus petrophagus (Banks, 1906) is not a Scapheremaeus but belongs to an undetermined genus in the Ameronothroidea. Cymbaeremaeus cyclops Oudemans, 1915 is recombined to Scapheremaeus. Five new species are described (S. angusi sp. nov., S. cheloniella sp. nov., S. ewani sp. nov., S. lambieae sp. nov., and S. pulleni sp. nov.) from soil and litter habitats in semi-arid Mallee eucalypt vegetation at Bookmark Biosphere Reserve, South Australia. These are the first members of the genus Scapheremaeus to be described from Australia, though undescribed species have been recorded previously. All the new species are morphologically closely-related and belong to a single species-group: Carinatus.


Author(s):  
Hiroshi Ikeda ◽  
Hiroyuki Yoshitomi

Japanese species of the genus Intybia are revised taxonomically, with the examination of the endophallic structure. Eight species, including one new species Intybia donan sp. nov. from Yonaguni-jima, are recognized. All species are described or redescribed with a key and figures. The endophallic structure contains one primary sclerite (gonoporal piece), three secondary sclerites (ligula, semi-gonoporal piece, and spinous plate) in some species, and a membranous basal area densely covered with many spines (spinous area). Based on the structures of the endophallus, the Japanese members of the genus are divided into two species groups (the histrio and pelegrini groups). The pelegrini species group is furthermore subdivided into three subgroups (subgroups 1–3). New distributional records are as follows: I. histrio from Hachijô-jima and Tanega-shima; I. niponica from Sakhalin and I. takaraensis from Tokuno-shima and Amami-Ôshima.


Zootaxa ◽  
2007 ◽  
Vol 1633 (1) ◽  
pp. 1-38 ◽  
Author(s):  
WAN-QI XUE ◽  
WEN-HUI SONG

This paper includes a key to the Palaearctic species groups of Botanophila, characteristics of each species group (key and characteristics compiled by Michael Ackland), and keys to the species of Botanophila from China. This paper also provides the characters of the genus Botanophila and describes three new species, namely B. densispinula sp. nov., B. platysurstyla sp. nov. and B. subspinulibasis sp. nov.; Botanophila nigrifrontata (Fan & Zheng) is synonymized with B. melametopa (Fan); and B. zhuoniensis (Jin) and B. nigribella (Deng) are redescribed. The type specimens of the new species are deposited in the Institute of Entomology, Shenyang Normal University.


1955 ◽  
Vol 3 (4) ◽  
pp. 545 ◽  
Author(s):  
WB Mather

Ten species of which six are new, of the genus Drosophila are described and figured: D. cancellata, sp. nov., D. enigma Mall., D. lativittata Mall., D. opaca, sp. nov., D. maculosa, sp. nov., D. levis, sp. nov., D. serrata Mall., D. takahashii Sturt., D. dispar, sp. nov., and D. versicolor, sp. nov. Laboratory cultures of these have been set up from single females fertilized in the wild, allowing descriptions of eggs, larvae, pupae, and certain internal structures and external anatomy of the adults. These species have been assigned to subgenera and species group and their geographical distribution is recorded, together with the known Queensland distribution of D. busckii Coq., D. melanogaster Meig., D. simulans Sturt., D. ananassae Dol., D. hydei Sturt., D. repleta Woll., D. immigrans Sturt., and D. spinofemora Patt. & Wheel. These 18 species are keyed. The taxonomy of the subgenus Pholadoris is discussed, and three new species groups established, namely, coracina, maculosa, and levis. A new species group within the subgenus Sophophora, namely, dispar, is established.


1995 ◽  
Vol 73 (7) ◽  
pp. 1247-1258 ◽  
Author(s):  
Miloslav Zacharda

Three new species of rhagidiid mites, Rhagidia breviseta, n.sp., R. parvilobata n.sp., and R. distisolenidiata n.sp., from the Nearctic region are described. Their interspecific relationships are discussed and two new species-groups, gigas and quadrisolenidiata, are defined.


Zootaxa ◽  
2017 ◽  
Vol 4365 (1) ◽  
pp. 1 ◽  
Author(s):  
ALEXEY V. SHAVRIN ◽  
ALEŠ SMETANA

Three new species-groups are established for eastern Palaearctic species of the genus Anthobium Leach, 1819: Gracilipalpe-group containing A. gracilipalpe (Champion, 1920) (Uttaranchal, Nepal), A. daliense sp.n. (China: Yunnan, Diancang Shan) and A. nivale sp.n. (China: Yunnan, Gaoligong Shan). Morchella-group containing A. morchella sp.n. (China: Yunnan, Baima Shan), A. hydraenoides sp.n. (China: Yunnan, Meili Xue Shan) and A. puetzi sp.n. (China: Sichuan, Daxue Shan, Qionglai Shan). Nigrum-Group containing A. nigrum (Cameron, 1924) (Himalaya), A. anishchenkoi sp.n. (China: Gansu, Dalijia Shan), A. conjunctum sp.n. (China: Yunnan, Diancang Shan), A. densepunctatum sp.n. (China: Yunnan, Meili Xue Shan) and A. ivani sp.n. (Nepal: Bagmati; Bhutan). The species groups are defined, briefly discussed and a key to the species included in each group is given. Lectotypes are designated for Eudeliphrum gracilipalpe Champion, 1920 and Lathrimaeum nigrum Cameron, 1924. Species in each species-group are described/redescribed, illustrated and their geographical distribution is mapped. Members of the genus Anthobium are recorded for the first time from China and Bhutan, and Anthobium gracilipalpe is recorded for the first time from Nepal. 


2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Manpreet Singh Pandher ◽  
Simarjit Kaur

Three new species and one new record are added to the philopotamid fauna of India from the Indian Himalaya. The newly described species under the genus Chimarra Stephens include Chimarra butticulata sp.n. and C. gangotriensis sp.n. both from Uttarakhand and C. sangtami sp.n. from Nagaland. The record of C. nigra Kimmins (from Sikkim) constitutes the first record of that species from India, although it was previously known from Nepal. It is redescribed here from India as there are minor differences in the male genitalia from previously described species (in original paper of Kimmins only lateral view of the phallus was illustrated and in the redescribed species the ventral view of phallus is illustrated along with the lateral view). The four species belong to two different species groups and one species is unplaced in the species group. These species are distinguishable from each other as well as from the previously known allied species by consistent taxonomic features of the inferior appendages, tergite X, and the phallic apparatus of males.


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