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19 results for “Ropalidia”
FIGURES 1–8. Figs. 1–2. Ropalidia binghami, female. 1. Head, frontal view. 2. Habitus. Figs. 3–4. Ropalidia parartifex, female. 1. Head, frontal view. 2. Habitus. Figs. 5–6. Ropalidia sumatrae, female. 1. Head, frontal view. 2. Habitus. Figs. 7–8. Ropalidia variegata, female. 1. Head, frontal view. 2 in Additional knowledge respecting taxonomy of the social wasp genus Ropalidia (Hymenoptera: Vespidae: Polistinae) from Vietnam, with new records of three species and an updated key to species
FIGURES 1–8. Figs. 1–2. Ropalidia binghami, female. 1. Head, frontal view. 2. Habitus. Figs. 3–4. Ropalidia parartifex, female. 1. Head, frontal view. 2. Habitus. Figs. 5–6. Ropalidia sumatrae, female. 1. Head, frontal view. 2. Habitus. Figs. 7–8. Ropalidia variegata, female. 1. Head, frontal view. 2. Habitus. Scale: 1mm
FIGURES 1–10 in A new Arthula Cameron (Ichneumonidae, Cryptinae) parasitoid of Ropalidia plebeiana Richards (Vespidae) and host of Amoturoides breviscapus Girault (Torymidae) (Hymenoptera)
FIGURES 1–10. Arthula plebeja Ubaidillah and Kojima, sp. nov. 1–8, female, holotype. 9–10, male, paratype. 1 and 9, habitus. 2, head, frontal view. 3, head, dorsal view. 4, mandibles. 5, forewing. 6, first and second metasomal segments, lateral view; 7, first and second metasomal segments, dorsal view. 8 and 10, apical part of metasoma, lateral view (OV, ovipositor). Scale bars: 1 mm, but 5 mm for figures 1 and 9.
Figure 2 in Natural history and behaviour of the primitively eusocial wasp Ropalidia marginata (Hymenoptera: Vespidae): a comparison of the two sexes
Figure 2. Comparison of residence time of Ropalidia marginata males and females. Note: Different letters on the bars signify they are statistically different from each other (t-test, p <0.05).
Figure 1 in Natural history and behaviour of the primitively eusocial wasp Ropalidia marginata (Hymenoptera: Vespidae): a comparison of the two sexes
Figure 1. Average number of Ropalidia marginata nests observed (upper panel) and average proportion of males observed (lower panel) every two months over three years.
Figure 5 in Natural history and behaviour of the primitively eusocial wasp Ropalidia marginata (Hymenoptera: Vespidae): a comparison of the two sexes
Figure 5. Comparison of feed self (FE); feed larva (FL); solicit (SC); being solicited (SS); dominance behaviour (DB); and subordinate behaviour (S–) of males and young females in Ropalidia marginata. Note: Bars carrying different letters are significantly different from each other (Mann–Whitney U-test, p <0.007).
Figure 4 in Natural history and behaviour of the primitively eusocial wasp Ropalidia marginata (Hymenoptera: Vespidae): a comparison of the two sexes
Figure 4. Comparison of feed self (FE); feed larva (FL); solicit (SC); being solicited (SS); dominance behaviour (DB); and subordinate behaviour (S–) of males and females in Ropalidia marginata. Note: Bars carrying different letters are significantly different from each other (Mann–Whitney U-test, p <0.007).
FIGURE 16. Ropalidia brevita. a in To the knowledge of Vespidae (Hymenoptera) of Pakistan
FIGURE 16. Ropalidia brevita. a, habitus; b, head, frontal view; c, head and mesosoma, dorsal view; d, metasoma, dorsal view.
FIGURE 17. Ropalidia cyathiformis. a in To the knowledge of Vespidae (Hymenoptera) of Pakistan
FIGURE 17. Ropalidia cyathiformis. a, habitus; b, head, frontal view; c, head and mesosoma, dorsal view; d, metasoma, lateral view.
Data from: Getting older, getting smarter: ontogeny of the foraging behaviour in the tropical social wasp Ropalidia marginata
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The effect of age on non-reproductive division of labour in the tropical primitively eusocial wasp, Ropalidia cyathiformis
Division of labour among workers (non-reproductive division of labour), a characteristic feature of eusocial insects enables the efficient functioning of their colonies. In many advanced insect societies division of labour is based on age (age polyethism). Primitively eusocial insects however are believed to have a weak age polyethism. Here we investigated the role of age in non-reproductive division of labour in the tropical primitively eusocial wasp, Ropalidia cyathiformis and compared it with that in Ropalidia marginata, a congeneric species that exhibits relatively strong age polyethism. Age had a significant effect on the first performance of the four tasks studied; tasks were initiated in the sequence feed larva, build, bring food and bring building material. We measured task performance as the absolute frequency of tasks performed (FTP) and the probability of performing a task relative to other tasks (PTP) and age as absolute age in days since eclosion as well as relative age compared to nestmates. FTP varied significantly with both absolute and relative age, although absolute age explained more variance. PTP varied significantly with absolute age but not always with relative age. This is contrary to R. marginata, where more variation is explained by relative age than by absolute age. There was no trade-off between intranidal and extranidal tasks in R. cyathiformis unlike in R. marginata where the frequency of intranidal tasks decreased and that of extranidal tasks increased with age. We conclude that age polyethism is weak and less flexible in R. cyathiformis compared to that in R. marginata.
Dominance behaviour and division of labour in the tropical primitively eusocial wasp Ropalidia cyathiformis
<p>Primitively eusocial insects exhibit reproductive division of labour such that one or a small number of individuals monopolize reproduction while the remaining function as non-reproductive workers. They also exhibit non-reproductive division of labour such that some workers primarily perform the extra-nidal tasks of foraging, while others primarily perform the intra-nidal tasks of feeding larvae, building the nest and other nest maintenance activities. In some species queens regulate both reproductive as well as non-reproductive division of labour by means of their dominance behavior toward the workers. Here we show that in the primitively eusocial species <i>R. cyathiformis</i>, (1) the queen shows significantly more aggression towards the potential queen (PQ) than to the rest of the workers; (2) the PQ shows significantly more aggression towards the workers than they show to each other; (3) the activities of the workers such as bringing food and feeding the larvae continue unabated in the absence of the queen; (4) the amount of dominance received by a worker does not predict her rate of foraging; (5) there is a positive correlation between workers' rates of bringing food and the rates at which they themselves feed the larvae. We suggest that while queen (along with PQ) regulates reproductive division of labour, dominance behavior is not used to regulate the non-reproductive activities of the workers such as bringing food and feeding the larvae; these are self-regulated by individual workers by themselves.</p>
FIGURES 30, 31. Mesosoma, dorsal view. 30. Ropalidia cyathiformis. 31. R in Vespidae (Hymenoptera) of the Pothwar region of Punjab, Pakistan
FIGURES 30, 31. Mesosoma, dorsal view. 30. Ropalidia cyathiformis. 31. R. brevita.
Figures 1-6 from: Polašek O (2024) A new species of the genus Ropalidia Guérin-Méneville from central Africa (Insecta, Hymenoptera, Vespidae). African Invertebrates 65(1): 9-14. https://doi.org/10.3897/afrinvertebr.65.103539
Figures 1-6 Ropalidia chromis sp. nov., female 1 head, frontal view 2 head, oblique view 3 head, lateral view 4 T1 and T2, lateral view 5 habitus, dorsal view 6 holotype labels.
Figure 3 in Natural history and behaviour of the primitively eusocial wasp Ropalidia marginata (Hymenoptera: Vespidae): a comparison of the two sexes
Figure 3. Survivorship curve for Ropalidia marginata male (solid line) and female (dashed line).
Figure 2 from: Tan J, van Achterberg K, Chen X (2014) Pictorial key to species of the genus Ropalidia Guérin-Méneville, 1831 (Hymenoptera, Vespidae) from China, with description of one new species. ZooKeys 391: 1-35. https://doi.org/10.3897/zookeys.391.6606
Figure 2 - Ropalidia spp., habitus (♀). A Ropalidia opifex van der Vecht, 1962 B Ropalidia ornaticeps (Cameron, 1900) C Ropalidia parartifex Tan & van Achterberg, sp. n. (holotype) D Ropalidia rufocollaris (Cameron, 1900) E Ropalidia santoshae Das & Gupta, 1989 F Ropalidia scitula (Bingham, 1897) G Ropalidia stigma (Smith, 1858) H Ropalidia sumatrae (Weber, 1801) I Ropalidia taiwana Sonan, 1935 J Ropalidia variegata (Smith, 1852).
Figure 3 from: Tan J, van Achterberg K, Chen X (2014) Pictorial key to species of the genus Ropalidia Guérin-Méneville, 1831 (Hymenoptera, Vespidae) from China, with description of one new species. ZooKeys 391: 1-35. https://doi.org/10.3897/zookeys.391.6606
Figure 3 - Ropalidia parartifex Tan & van Achterberg, sp. n. A–E Female (♀): A Head, frontal view B Head and mesosoma, dorsal view C Right fore wing D Propodeum and first metasomal segment, dorsal view E Second metasomal segment to the end, dorsal view F–J Male (♂): F Head, frontal view G Head, dorsal view H Right antenna I Metasomal, latral view J Penis, lateral view.
Figure 1 from: Tan J, van Achterberg K, Chen X (2014) Pictorial key to species of the genus Ropalidia Guérin-Méneville, 1831 (Hymenoptera, Vespidae) from China, with description of one new species. ZooKeys 391: 1-35. https://doi.org/10.3897/zookeys.391.6606
Figure 1 - Ropalidia spp., habitus (♀). A Ropalidia artifex (de Saussure, 1854) B Ropalidia bicolorata van der Vecht, 1962 C Ropalidia cyathiformis (Fabricius, 1804) D Ropalidia fasciata (Fabricius, 1804) E Ropalidia flavopicta (Smith, 1857) F Ropalidia hongkongensis (de Saussure, 1854)G Ropalidia malaisei van der Vecht, 1962 H Ropalidia marginata (Lepeletier, 1793) I Ropalidia mathematica (Smith, 1860) J Ropalidia obscura Gusenleitner, 1996.
Dominance behaviour and division of labour in the tropical primitively eusocial wasp Ropalidia cyathiformis
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The effect of age on non-reproductive division of labour in the tropical primitively eusocial wasp, Ropalidia cyathiformis
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