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1,150 results for “Genitive”
FIGURES 66–70 in From the Ethiopian Bale Mountains hotspot-Filopalpinae subfam. nov., a new taxon of Laniatorean harvestmen based on external and genital morphology (Arachnida, Opiliones, Assamiidae)
FIGURES 66–70. Filopalpus niger sp. nov. Female paratype. Habitus in lateral view (66) and dorsal view (67). 68. Pedipalp in retro-lateral view. 69–70. Chelicera in retro-lateral view (69) and pro-lateral view (70). Scales: 66–67: 0.6 mm, 68: 0.5 mm, 69–70: 0.3 mm.
FIGURES 58–65 in From the Ethiopian Bale Mountains hotspot-Filopalpinae subfam. nov., a new taxon of Laniatorean harvestmen based on external and genital morphology (Arachnida, Opiliones, Assamiidae)
FIGURES 58–65. Filopalpus altomontanus sp. nov. Female holotype. 58–60. Habitus in dorsal (58), ventral (59) and lateral view (60). 61–62. Chelicera in pro-lateral-view (61) and retro-lateral view (62). 63. Pedipalp, retro-lateral view. 64. Pedipalpal tibia and tarsus, retro-lateral view. 65. Apophysis and sensory hair on pedipalpal tarsus. Scales: 58–60: 0.6 mm, 61–62: 0.3 mm, 63: 0.5 mm, 65: 0.025 mm.
FIGURE 9. Atopida, female genital tract. A in Revision of Atopida White, 1846 (Coleoptera: Scirtoidea: Scirtidae)
FIGURE 9. Atopida, female genital tract. A) A. insularis sp. nov., B) A. villosa. Abbreviations: bscl—bursal sclerite, gla— gland, sVIII—sternite VIII, tVIII—tergite VIII.
FIGURE 1. Protrelleta floridana Chitwood, 1932. Female. A. Oesophageal region, lateral view. B. Cephalic end, optical section. C. Tail, lateral view. D. Egg. E. Genital tract, lateral view. F in Morphological and molecular characterization of two species of nematodes (Oxyuridomorpha: Thelastomatoidea: Protrelloididae, Thelastomatidae) parasitic in the cockroach Blaberus discoidalis Serville (Blattaria: Blaberidae) from Cuba
FIGURE 1. Protrelleta floridana Chitwood, 1932. Female. A. Oesophageal region, lateral view. B. Cephalic end, optical section. C. Tail, lateral view. D. Egg. E. Genital tract, lateral view. F. Habitus, lateral view.
Dataset for Xia et al.: Reproductive isolation via divergent genital morphology due to cascade reinforcement in Ohomopterus ground beetles
<p><span>Secondary contact between incipient species and selection against maladaptive hybridization can drive reinforcement between populations in contact and result in reproductive character displacement (RCD). Resultant divergence in mating traits within a species may generate downstream reproductive isolation between populations with </span><span>d</span><span>isplaced and non-displaced traits, referred to as the cascade reinforcement hypothesis. We examined this hypothesis using three allopatric populations of the ground beetle </span><span>Carabus maiyasanus</span><span> with</span><span> a genital lock-and-key system. This species shows RCD in male and female genital morphologies in populations in contact with the sister species C. iwawakianus. In a reciprocal mating experiment using three allopatric populations with differences in male and female genital sizes, insemination</span><span>failure increased as the difference in genital size increased. Based on the reproductive isolation index, insemination failure w</span><span>as the major postmating-prezygotic isolation barrier, at least in one population pair with comparable total isolation to those of other species pairs. By contrast, there was</span><span> only incomplete premating isolation among populations</span><span>. </span><span>These results suggest that RCD in genital morphologies drives incipient allopatric speciation, supporting the cascade reinforcement hypothesis. These findings provide insight into the roles of interspecific interactions and subsequent trait diversification in speciation processes</span><span>.</span></p>
FIGURE 2 in Psaironeura jeronimoi (Odonata: Zygoptera: Coenagrionidae) sp. nov. from the Brazilian Amazon rainforest, with a key for species of tenuissima group, and discussion on the significance of the genital ligula to the taxonomy of the group
FIGURE 2. Dorsal view of head and lateral view of thorax of: (a, b, c) Psaironeura jeronimoi sp. nov. male holotype; (d, e, f) Psaironeura bifurcata (Sjödsted, 1918), male; (g, h, i) Psaironeura tenuissima (Selys, 1886), male. Scale bar = 1 mm.
FIGURE 1 in Psaironeura jeronimoi (Odonata: Zygoptera: Coenagrionidae) sp. nov. from the Brazilian Amazon rainforest, with a key for species of tenuissima group, and discussion on the significance of the genital ligula to the taxonomy of the group
FIGURE 1. Psaironeura jeronimoi sp. nov., male holotype: (a) lateral view of habitus; Psaironeura bifurcata (Sjödsted, 1918), male: (b) lateral view of habitus; Psaironeura tenuissima (Selys, 1886), male: (c) lateral view of habitus. Scale bar = 5 mm.
FIGURE 6 in Psaironeura jeronimoi (Odonata: Zygoptera: Coenagrionidae) sp. nov. from the Brazilian Amazon rainforest, with a key for species of tenuissima group, and discussion on the significance of the genital ligula to the taxonomy of the group
FIGURE 6. (a−b) Habitat of Psaironeura jeronimoi sp. nov., in type locality of vicinity of Alto Maués ecological station.
FIGURE 3 in Psaironeura jeronimoi (Odonata: Zygoptera: Coenagrionidae) sp. nov. from the Brazilian Amazon rainforest, with a key for species of tenuissima group, and discussion on the significance of the genital ligula to the taxonomy of the group
FIGURE 3. Lateral, dorsal and middorsal view of cerci of: (a, b, c) Psaironeura jeronimoi sp. nov. male holotype; (d, e, f) Psaironeura bifurcata (Sjödsted, 1918); (g, h, i) Psaironeura tenuissima (Selys, 1886). Abrevations: AaL, anteapical lobe; AaT, anteapical tooth; At, apical tooth; EB, external branch of cerci; IB, internal branch of cerci; VbP, ventrobasal process of cercus. Scale bar = 0.5 mm.
Data for: Relationships between reproductive character displacement in genital morphology and the population-level cost of interspecific mating: Implications for the Templeton effect
<p><span>Natural selection against maladaptive interspecific reproductive interactions may cause greater divergence in mating traits between sympatric populations than between allopatric populations in a pair of species, known as reproductive character displacement (RCD), evidence for the lock-and-key hypothesis of genital evolution. However, the relative importance of various processes contributing to RCD in genital morphology (e.g., reinforcement, reproductive interference, and population filtering or the Templeton effect) is not clear. Here, we examined hypotheses for RCD in genital morphology, with a special focus on the Templeton effect (which predicts that only highly differentiated populations can exist in sympatry). We examined population-level fitness costs in interspecific mating between <em>Carabus maiyasanus</em> and <em>C. iwawakianus</em> with RCD in genital morphology. A mating experiment using populations with various degrees of RCD in genital morphology showed no evidence for consistently lower interspecific mating costs in <em>C. maiyasanus</em> populations in contact with displacement in genital morphology than in remote populations, contrary to the predictions of the Templeton effect. Alternatively, interspecific mating costs varied among populations. Observed relationships between the sizes of genital parts concerning isolation and interspecific mating costs across populations suggested that population-level fitness costs do not necessarily decrease during the process leading to RCD. Our results provide insight into ecological and evolutionary processes during secondary contact in closely related species.</span></p>
FIGURES 86–91. Cloeodes redactus, male genitals. 86–88 in Contribution to the knowledge of Cloeodes Traver 1938 (Ephemeroptera, Baetidae)
FIGURES 86–91. Cloeodes redactus, male genitals. 86–88, form «nigrostriatus»; 89–91, form «pallidus». 86 and 89, subimaginal gonostyli developing under larval cuticle; 87 and 90, exuviae of subimaginal genitals; 88 and 91, genitals of male imago (gonovectes shown by interrupted line; at right half gonovectal and gonostylar muscles shown by interrupted lines; median styligeral muscle shown by interrupted lines, areas of anterior attachment of median paraproctal muscles shown by dotted lines). Abbreviations: 1, 2, 3, segments of gonostylus; m.IX-X, areas of anterior attachment of median paraproctal muscles (i.e., muscles going from sternum IX to common base of paraprocts); m.sg, median sterno-styligeral muscle; usg, unistyliger.
FIGURES 7–12. Genital structures. 7 in Description of Rhamma dawkinsi (Lepidoptera: Lycaenidae) a new mountain butterfly from Colombia
FIGURES 7–12. Genital structures. 7, Rhamma adunca male genitalia in lateral view. 8, R. adunca male genitalia in ventral view (penis removed). 9, R. adunca female genitalia 10, R. dawkinsi sp. nov. male genitalia in lateral view. 11, R. dawkinsi, sp. nov., male genitalia in ventral view (penis removed). 12, R. dawkinsi, sp. nov., female genitalia.
FIGURE 7 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 7. Dicterias atrosanguinea males (a, b) and female (c) in the field study, Pará, Brazil, 2 xi 2016, by ACR.
FIGURE 6 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 6. Heliocharis amazona, female from Rondônia, Brazil. Anal appendages in lateral view. Courtesy of Rosser W. Garrison.
FIGURE 5 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 5. Dicterias atrosanguinea, female from Pará, Brazil. Anal appendages in dorsal (a) ventral (b) and lateral (c) view.
FIGURE 2 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 2. Dicterias atrosanguinea, female from Pará, Brazil. Pterothorax dorsal (a) and lateral (b) view. Preserved specimen. Photo taken in 23 xi 2016 in Pontevedra, Spain, by DSV.
FIGURE 4 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 4. Females of Dicterias atrosanguinea from Pará, Brazil (a) taken in 2 xi 2016, by ACR and Heliocharis amazona from Chapada dos Guimarães, Brazil (b) taken in 24 x 2015, by ACR.
FIGURE 1 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 1. Distribution of Dicterias atrosanguinea (red dots) and Heliocharis amazona (yellow/black dots) throughout South America.
FIGURE 8 in Description of the female of Dicterias atrosanguinea Selys 1853, with notes on male genital ligula and male behavior (Odonata: Dicteriadidae)
FIGURE 8. Male of Dicterias atrosanguinea from Pará, Brazil (a) taken 2 xi 2016, by ACR, its genital ligula (b), the lateral lobes (c) and a detail of the subterminal part of the ligula with tiny spines (d, red arrow). Male of Heliocharis amazona from Chapada dos Guimarães, Brazil (e) taken 21 x 2016, by ACR, its genital ligula (f), the lateral lobes (g) and the subterminal part of the ligula, lacking spines (h, red arrow). SEM images taken in CACTI (Univ. de Vigo), by ACR.
Fig. 149. Linyphiidae species. Left male palp. A, prolateral view. B, dorsal view. C, expanted retrolateral view. D in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 149. Linyphiidae species. Left male palp. A, prolateral view. B, dorsal view. C, expanted retrolateral view. D, lateral view. © J. Caudron.
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