Description of the tadpole of Leptodactylus pustulatus Peters, 1870(Anura: Leptodactylidae)

Zootaxa ◽  
2007 ◽  
Vol 1523 (1) ◽  
pp. 49-58 ◽  
Author(s):  
RAFAEL O. DE SÁ ◽  
REUBER BRANDÃO ◽  
LORENA DALL’ARA GUIMARÃES
Keyword(s):  
Parental Care ◽  
Species Group ◽  
External Morphology ◽  
Oral Disc ◽  
Gosner Stage ◽  
Oral Anatomy

The external morphology and oral disc of the tadpole of Leptodactylus pustulatus Peters, 1870, are described and illustrated for Gosner stage 39. The internal oral anatomy was analyzed with SEM at Gosner stage 36 whereas chondrocranial anatomy is reported for Gosner stage 35. The overall characteristics do not depart from those known for the genus Leptodactylus and they particularly agree for those of the melanonotus species group. The labial tooth row formula is 2(2)/3. Observations are presented that suggest that L. pustulatus engages in larval parental care.

A survey of the internal oral features and external morphology of Physalaemus larvae (Anura, Leptodactylidae)

Zootaxa ◽  
2012 ◽  
Vol 3200 (1) ◽  
pp. 1 ◽  
Author(s):  
JOICE RUGGERI ◽  
LUIZ NORBERTO WEBER
Keyword(s):  
Interspecific Variation ◽  
External Morphology ◽  
Oral Disc ◽  
Species Groups ◽  
Oral Anatomy

There are 45 species currently described for the genus Physalaemus that are allocated into seven morphological groupsand 29 of them have their tadpoles described, of which 12 have information on their internal oral anatomy. In order to helpresolving taxonomic and systematic problems, tadpoles from this genus had their external and internal oral morphologiesstudied, described and compared. During this study, it was noticed that different terms are sometimes used to refer to thesame character and a standardized nomenclature is suggested. This study is divided into two parts. First, we describe theoral cavity anatomy of the tadpoles of Physalaemus aguirrei, P. atlanticus, P. camacan, P. cicada, P. gracilis, P. irroratus,P. maximus, P. rupestris, P. signifer and P. soaresi. Second, we present a comparison among tadpoles of these ten speciesplus the tadpoles of P. albifrons, P. angrensis, P. centralis, P. crombiei, P. cuvieri, P. henselii, P. jordanensis, P. marmora-tus, P. moreirae and P. spiniger. This study adds information on tadpoles of the genus Physalaemus that corroborates someof the species groups proposed for adult specimens, but also shows that although they have a typical pond-living externalmorphology, being very similar to one another, the oral disc and the internal oral morphologies present many features with interspecific variation that may be used to identify the specimens.

Comparative larval morphology in Madagascan frogs of the genus Mantella (Amphibia: Mantellidae)

Zootaxa ◽  
2009 ◽  
Vol 2124 (1) ◽  
pp. 21-37 ◽  
Author(s):  
OLGA JOVANOVIC ◽  
JULIAN GLOS ◽  
FRANK GLAW ◽  
ROGER-DANIEL RANDRIANIAINA ◽  
MIGUEL VENCES
Keyword(s):  
Parental Care ◽  
Dna Barcoding ◽  
Species Identification ◽  
Intraspecific Variation ◽  
Phylogenetic Relationships ◽  
Species Group ◽  
Larval Morphology ◽  
Oral Disc ◽  
Tree Hole ◽  
First Time

We describe and compare the tadpole morphology of nine species of frogs of the endemic Madagascan genus Mantella based upon specimens identified through DNA barcoding or captive bred. The tadpole morphology of M. crocea/ milotympanum-hybrids, M. madagascariensis, M. pulchra, M. viridis, M. baroni, M. bernhardi and M. betsileo is described for the first time. In general, Mantella have small and generalized tadpoles with a uniform dark colouration. The oral disc is elliptical, emarginated, and positioned anteroventrally. In M. laevigata the oral disc is rounded, not emarginated, and positioned ventrally; eyes are positioned and directed dorsally, while in other species they are directed dorsolaterally. Labial tooth row formulas of Mantella tadpoles differ among some species, and in M. aurantiaca and M. crocea/milotympanum they also show intraspecific variation. Species identification is difficult when considering only morphometric variables. Tadpoles within each species group of the genus do not cluster together (except for some clustering of species belonging to the M. madagascariensis group), confirming that the larval morphology in closely related Mantella species is not suitable for determining phylogenetic relationships. Mantella laevigata, distinguished by tree-hole breeding and parental care, shows the most distinguished larval morphology.

Redescription of the tadpoles of three species of frogs from Uruguay (Amphibia: Anura: Leiuperidae and Leptodactylidae), with notes on natural history

Zootaxa ◽  
2007 ◽  
Vol 1638 (1) ◽  
pp. 1-20 ◽  
Author(s):  
CLAUDIO BORTEIRO ◽  
FRANCISCO KOLENC
Keyword(s):  
Natural History ◽  
Reproductive Mode ◽  
Species Group ◽  
External Morphology ◽  
Oral Disc ◽  
Single Row ◽  
Character Variation ◽  
Vent Tube ◽  
Inguinal Glands

In this work the tadpoles of the neotropical frogs Leptodactylus latinasus, Physalaemus biligonigerus and Physalaemus riograndensis are redescribed. Relevant features of L. latinasus tadpoles are a medial vent tube, labial tooth row formula (LTRF) 2(2)/3(1), and oral disc with a single row of marginal papillae interrupted by a dorsal gap, similarly to other species within the L. fuscus species group. Tadpoles of P. riograndensis have a medial vent tube, LTRF 2(2)/2(1), oral disc with single row of marginal papillae, interrupted by a dorsal gap and usually two ventrolateral gaps. The tadpole of P. biligonigerus has a dextral vent tube, the oral disc presents a single row of marginal papillae (sometimes double ventrally) with dorsal gap, and LTRF 2(2)/2(1). Although considered relevant for the taxonomy of Physalaemus, character variation of larval external morphology is incongruous with the phenetic species group arrangements proposed up to date. A reproductive mode previously unreported for P. riograndensis and P. henselii was observed: foam nests in the humid ground outside ponds. We also report the display of deimatic behavior in L. latinasus, L. ocellatus, P. henselii, and P. biligonigerus, in the last case with exhibition of the eye-like inguinal glands.

scholarly journals Differences in external, internal oral and chondrocranial morphology of the tadpole of Corythomantis greeningi Boulenger, 1896 (Anura: Hylidae)

2020 ◽  
Author(s):  
Lucas Rafael Uchôa ◽  
Claylton A. Costa ◽  
Antonia Joyce S. Santos ◽  
Rayone A. Silva ◽  
Felipe P. Sena ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Rainy Season ◽  
Single Species ◽  
The State ◽  
External Morphology ◽  
Northeastern Brazil ◽  
Oral Disc ◽  
Northeast Region ◽  
Oral Anatomy ◽  
Rule Out

ABSTRACTThe genus Corythomantis currently comprises a single species, Corythomantis greeningi, a hylid widely distributed in xerophilic and subhumid morphoclimatic regions of Brazil, mainly in the Northeast region. Recently the external morphology, internal oral anatomy, and chondrocranium of C. greeningi tadpoles were described from specimens collected in the state of Bahia, however, we observed some differences in morphology of individuals from the state of Piauí, northeastern Brazil. The tadpoles were collected during the 2019 rainy season and 14 individuals were used to describe and compare the larval characters. We observed differences in external, internal oral and chondrocranial morphology in relation to specimens previously described, especially in oral disc, number and shape of oral cavity papillae, and some chondrocranium structures, as: cartilago suprarostralis, cornua trabeculae, fontanella frontoparietalis, cartilago orbitalis e planum hypobranchiale. Our results point to the occurrence of heterochrony in C. greeningi, but we do not rule out the possibility that tadpoles belong to different species. Further studies involving a greater number of tadpoles at different stages, combined with genetic, acoustic, and morphological factors of adult specimens may establish the variation degree of C. greeningi in different regions of northeastern Brazil.RESUMOO gênero Corythomantis compreende atualmente uma única espécie, Corythomantis greeningi, um hilídeo amplamente distribuído nas regiões morfoclimáticas xerofílicas e subúmidas do Brasil, principalmente na região Nordeste. Recentimente foram descritas a morfologia externa, anatomia oral interna e condrocrânio do girino de C. greeningi a partir de espécimes coletados no estado da Bahia, no entanto, observamos algumas diferenças na morfologia dos indivíduos coletados na região norte do estado do Piauí, Nordeste do Brasil. Os girinos foram coletados durante o período chuvoso de 2019 e 14 indivíduos foram utilizados para descrição e comparação dos caracteres larvais. Observamos diferenças na morfologia externa, oral interna e no condrocranio do girino em relação ao descrito anteriormente, sobretudo no disco oral, no número e formato de papilas cavidade oral e algumas estruturas do condrocrânio, como: cartilago suprarostralis, cornua trabeculae, fontanella frontoparietalis, cartilago orbitalis e planum hypobranchiale. Nossos resultados apontam a ocorrência de heterocronia em C. greeningi, porém não descartamos a possibilidade dos girinos pertencerem a espécies diferentes. Estudos futuros envolvendo uma maior área de distribuição e maior número de indivíduos em estágios diferentes, aliados a fatores genéticos, acústico e morfológicos dos espécimes adultos poderão estabelecer o grau de variação de C. greeningi em diferentes regiões do Nordeste brasileiro.

scholarly journals The tadpole of Hypsiboas atlanticus (Anura, Hylidae) from northeastern Brazil

2009 ◽  
Vol 99 (4) ◽  
pp. 431-436 ◽  
Author(s):  
Filipe A. C. do Nascimento ◽  
Marcelo G. de Lima ◽  
Gabriel O Skuk ◽  
Rafael O. de Sá
Keyword(s):  
South America ◽  
Species Group ◽  
Northeastern Brazil ◽  
Oral Disc ◽  
Single Row ◽  
The Status

The tadpole of Hypsiboas atlanticus (Caramaschi & Velosa, 1996) is described from the municipality of Maceió, State of Alagoas, Brazil. At stage 36 the larvae have an overall elliptical body in lateral and dorsal views, oral disc anteroventral, spiracular tube sinistral, and labial tooth row formula 2(1,2)/3(1). The oral disc is surrounded, almost completely (anterior medial gap present) by a single row of marginal papillae. Described tadpoles of the H. punctatus species group can be differentiated by a combined disc oral features. Additional descriptions of H. punctatus (Schneider, 1799) tadpoles from populations throughout South America may be helpful in determining the status of these populations.

scholarly journals Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 2. Canuschiza minuta species group

2017 ◽  
Vol 57 (Suppl.) ◽  
pp. 77-86
Author(s):  
Richard Sehnal ◽  
David Král ◽  
Aleš Bezděk
Keyword(s):  
Male Genitalia ◽  
Species Group ◽  
Identification Key ◽  
External Morphology ◽  
Socotra Island ◽  
Males And Females

The Canuschiza minuta species group of the genus Canuschiza is revised. Canuschiza zerig sp. nov. and previously unknown female of C. minuta are described. Variability in number of antennomeres observed in females of C. minuta is briefly discussed. An identification key to males and females of the species group is provided, and photographs illustrate external morphology and male genitalia.

scholarly journals Taxonomic review of the Dichotomius (Luederwaldtinia) agenor species group (Coleoptera: Scarabaeidae: Scarabaeinae)

2021 ◽  
Vol 734 ◽  
pp. 1-64 ◽  
Author(s):  
Santiago Montoya-Molina ◽  
Fernando Z. Vaz-de-Mello
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Male Genitalia ◽  
Species Group ◽  
External Morphology ◽  
Type Specimens ◽  
Mato Grosso ◽  
New Synonym ◽  
Species Descriptions ◽  
Group D

The Neotropical D. agenor species group of the subgenus Luederwaldtinia Martínez, 1951 is taxonomically reviewed. After examination of specimens in collections, the D. agenor species group will consist of seventeen species, a leap from the former nine species: D. agenor (Harold, 1869), D. amplicollis (Harold, 1869), D. belus (Harold, 1880), D. centralis (Harold, 1869), D. deyrollei (Harold, 1869), D. sagittarius (Harold, 1869) stat. rev., D. tristis (Luederwaldt, 1923), D. triquetrus (Luederwaldt, 1923), D. validipilosus (Luederwaldt, 1931), D. fornicatus (Luederwaldt, 1931) [transferred to D. lucasi species group and to which D. bosqi (Pereira, 1941) is considered to be a new synonym], D. inachoides (Felsche, 1901) [transferred from the group fisus (Selenocopris)], D. simplicicornis (Luederwaldt, 1935) [transferred from the group fisus (Selenocopris)], D. subaeneus (Castelnau, 1840) [transferred from the D. carbonarius species group], D. rafanunezi sp. nov. from Mato Grosso, D. henripittieri sp. nov. from Venezuela and D. enioi sp. nov. from Guatemala and Costa Rica. This review was based on external morphology and characters of the male genitalia (aedeagus and internal sac). Descriptions of new species and redescriptions were made after examining the type-specimens of the already described species. Lectotype designations, species revalidations, redescriptions and new species descriptions are provided.

scholarly journals Revision of the “Lozopera” species group reveals peculiar structures on the male genitalia in moths (Insecta: Lepidoptera: Tortricidae)

2019 ◽  
Vol 2 ◽  
Author(s):  
Jose Pérez Santa-Rita ◽  
Joaquin Baixeras Almela ◽  
Boyan Zlatkov
Keyword(s):  
Light Microscopy ◽  
Male Genitalia ◽  
Species Group ◽  
External Morphology ◽  
Palaearctic Region ◽  
Valid Species ◽  
Genital Morphology ◽  
Similar Location

The “Lozopera” species group of the genus Aethes Billberg, 1820 comprises at least 26 described valid species distributed in the Palaearctic region. Most of them share similar external morphology and are identified mainly after their genitalia. The genitalia morphology of both sexes is comparatively complex and the taxa of the group are surrounded by numerous taxonomical problems. A thorough study of the genital morphology, aiming to solve some of the problems, revealed the existence of a microscopic seta on the vesica of the male phallus. SEM and light microscopy observations suggest that it is sensillum chaeticum and probably has a (mechano) receptive function. It is present in some species and absent in others, but always located near the gonopore. In some species a large acantha with similar location was found, instead. Apart from the “Lozopera” species group, such a sensillum was observed in other Aethes spp. and in other genera of the tribe Cochylini as well. Such a structure has never been reported on the vesica of a moth.

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