Exaggerated female genitalia in two new spider species (Araneae: Pholcidae), with comments on genital evolution by female choice versus antagonistic coevolution

2005 ◽  
Vol 36 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Cristina Rheims ◽  
Bernhard Huber ◽  
Antonio Brescovit
Keyword(s):  
Female Choice ◽  
External Genitalia ◽  
Female Genitalia ◽  
Cooperative Behaviour ◽  
Male And Female ◽  
Spider Species ◽  
Antagonistic Coevolution ◽  
Morphological Findings ◽  
Competing Models ◽  
Female External Genitalia

AbstractTwo new species are described that are remarkable in having exaggerated female genitalia: Mesabolivar samatiaguassu sp. n. and M. cuarassu sp. n.. Comparative evidence as well as size measurements of male and female structures suggest that the exaggerated female external genitalia correlate functionally with elongated male cheliceral apophyses. These morphological findings are discussed in the light of competing models of genital evolution. Luring mating acts, female cooperative behaviour and morphology, as well as the probable costs associated with the female structures argue against the antagonistic coevolution model and favour sexual selection by cryptic female choice.

scholarly journals Two new species of the genus Oryctopterus (Orthoptera: Stenopelmatidae: Oryctopinae) from India, with some notes on biology

2021 ◽  
Vol 748 ◽  
Author(s):  
S.R. Hiremath ◽  
K.D. Prathapan
Keyword(s):  
New Species ◽  
Food Habits ◽  
External Genitalia ◽  
Female Genitalia ◽  
Male And Female ◽  
Two New Species ◽  
And Behavior ◽  
First Time ◽  
Female External Genitalia

The genus Oryctopterus Karny, 1937 (Orthoptera, Stenopelmatidae, Oryctopinae) is reported from India for the first time and two new species, Ot. varuna sp. nov. and Ot. yeshwanthi sp. nov. are described. Male and female external genitalia of Ot. varuna sp. nov. and female genitalia of Ot. yeshwanthi sp. nov. are figured and described. Notes on seasonality, food habits and behavior of Ot. varuna sp. nov. are provided.

A new species group in Edessa Fabricius, 1803 (Heteroptera: Pentatomidae: Edessinae)

Zootaxa ◽  
2012 ◽  
Vol 3313 (1) ◽  
pp. 12 ◽  
Author(s):  
VALÉRIA JULIETE DA SILVA ◽  
JOSÉ ANTÔNIO MARIN FERNANDES
Keyword(s):  
Body Shape ◽  
External Genitalia ◽  
Ventral Surface ◽  
Species Group ◽  
Male And Female ◽  
Line Drawings ◽  
Shape Pattern ◽  
Heteroptera Pentatomidae ◽  
Female External Genitalia ◽  
A New Species

The caldaria group of Edessa is proposed to include four species: Edessa caldaria Distant, 1890, Edessa pantherina Bergroth,1891, Edessa rufomaculata sp. nov. and Edessa costaricensis sp. nov. Diagnoses, line drawings of the metasternal process,male and female external genitalia, digital habitus photographs and distributional maps are provided. This group can be identi-fied by rounded to ovate body shape, pattern of maculae on connexivum and stripes on ventral surface. The following syn-onyms are proposed: Edessa pacifica Breddin, 1903 = Edessa pantherina Bergroth, 1891. The lectotype of Edessa caldaria is designated.

scholarly journals A taxonomic study of six species of the genus Junonia Hübner, [1819] (Insecta: Lepidoptera: Nymphalidae) from the northwestern Himalayan region in India

2018 ◽  
Vol 10 (7) ◽  
pp. 11934
Author(s):  
Deepika Mehra ◽  
Jagbir Singh Kirti ◽  
Avtar Kaur Sidhu
Keyword(s):  
External Genitalia ◽  
Himalayan Region ◽  
Wing Venation ◽  
Taxonomic Study ◽  
Male And Female ◽  
Morphological Variations ◽  
Identification Keys ◽  
Female External Genitalia

Characters of external genitalia are considered as one of the important criteria to understand the taxonomy of insects.  In the present study, various taxonomic characters of the male and female external genitalia and wing venation of six species under the genus Junonia Hübner viz., orythia (Linnaeus, 1758), iphita (Cramer, [1779]), almana (Linnaeus, 1758), lemonias (Linnaeus, 1758), hierta (Fabricius, 1798), atlites (Linnaeus, 1763), have been described and illustrated in detail.  Besides, brief diagnoses and identification keys based on external genitalia, morphological variations and taxonomic remarks have been given for all taxa.   

700: Immunolocalization of Estrogen Receptor Subtypes α and β in Human Fetal Male and Female External Genitalia

2005 ◽  
Vol 173 (4S) ◽  
pp. 191-191
Author(s):  
Ellen Shapiro ◽  
Hongying Huang ◽  
Rachael J. Mash ◽  
Deborah E. McFadden ◽  
Xue-Ru Wu
Keyword(s):  
Estrogen Receptor ◽  
External Genitalia ◽  
Receptor Subtypes ◽  
Male And Female ◽  
Female External Genitalia

scholarly journals Pentatomiana beckerae gen. nov. and sp. nov., a new Neotropical Pentatomini (Hemiptera, Heteroptera, Pentatomidae)

2004 ◽  
Vol 21 (2) ◽  
pp. 283-285 ◽  
Author(s):  
Jocélia Grazia ◽  
Aline Barcellos
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
New Genus ◽  
External Genitalia ◽  
Santa Catarina ◽  
Male And Female ◽  
Heteroptera Pentatomidae ◽  
Female External Genitalia ◽  
A New Species

A new genus, Pentatomiana, and a new species, P. beckerae, are described, based on specimens from Rio de Janeiro and Santa Catarina States, Brazil. Brachyptery is present in the males of the new species. Pentatomiana gen. nov. is compared with Lojus McDonald, 1982, which also presents brachyptery in one of the species, but in females. Illustrations of male and female external genitalia are provided.

A new group of species of Edessa Fabricius, 1803 (Hemiptera: Heteroptera: Pentatomidae)

Zootaxa ◽  
2011 ◽  
Vol 3019 (1) ◽  
pp. 63 ◽  
Author(s):  
JOSÉ ANTÔNIO MARIN FERNANDES ◽  
LOURIVAL DIAS CAMPOS
Keyword(s):  
New Species ◽  
External Genitalia ◽  
Distinct Species ◽  
Species Group ◽  
Male And Female ◽  
Heteroptera Pentatomidae ◽  
Three New Species ◽  
Female External Genitalia

Three new species of Edessa (E. metallica sp. nov., E. preclara sp. nov., E. splendens sp. nov.) are described which form a distinct species group. The metallica group is characterized by a metallic blue or green dorsal color. Edessa preclara sp. nov. and E. splendens sp. nov. have an Andean distribution, having been collected above 1000 meters in Ecuador and Colombia respectively. Edessa metallica sp. nov. has been collected in Panama. Illustrations of the metasternal process and male and female external genitalia, photographs of the habitus, and descriptions are provided.

scholarly journals Characterization of Female External Genitalia and Eggs of Four South American Species of the Triatoma Laporte, 1832 Genus (Hemiptera: Reduviidae: Triatominae)

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 537
Author(s):  
Tiago Belintani ◽  
Jader Oliveira ◽  
Heloisa Pinotti ◽  
Kaio Cesar Chaboli Alevi ◽  
Juliana Damieli Nascimento ◽  
...  
Keyword(s):  
Vector Potential ◽  
External Genitalia ◽  
Sensu Stricto ◽  
Female Genitalia ◽  
South American ◽  
South American Species ◽  
Female External Genitalia

Triatoma is the most diversified and one of the most important genera from an epidemiological perspective. Given the difficulty in identifying some species of the Triatoma genus, morphological, histological, and morphometric studies were performed to provide new characters that make it possible to differentiate T. garciabesi, T. guasayana, T. patagonica, and T. sordida sensu stricto, triatomines that overlap geographically and have vector potential. Through the external female genitalia, as well as morphology, morphometry, and histology of eggshells, it was possible to discriminate the four species. In addition, this study reinforces the taxonomic validity of T. garciabesi and provides new data for discussion on systematic issues of T. guasayana and T. patagonica.

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