Anthidiellum (Pycnanthidium) rasorium

Anthidiellum (Pycnanthidium) rasorium (Smith, 1875) Anthidium rasorium Smith, 1875: 50. Anthidium rufpies Smith, 1879: 85. Diagnosis. Differs from D. ramikrishnae with following characters: markings yellow rather than white, mesoscutum with punctures large and not contiguous, and female hind basitarsus relatively slender (length ~2.0x width). Floral Associations: unknown Flight period: Unknown. Distribution. Reported from southern and West Bengal, India. Material examined. None. Comments. Diagnostic characters are largely taken from study of the types of A. rasorium and A. rufipes conducted during an earlier study of Sri Lankan anthidiines (Griswold 2001).Published as part of Belavadi, Vasuki V., 2017, The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini), pp. 436-468 in Zootaxa 4317 (3) on page 440, DOI: 10.11646/zootaxa.4317.3.2, http://zenodo.org/record/88469

FIGURE 9 in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 9. Female Eoanthidium salemense (Cockerell) A) Face B) Mandible C) Scopa D) Dorsal view E) Ventral view

FIGURE 6 in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 6. Male Anthidium sp 1 A) Face B) Tergal apical segments C) Genitalia D) Dorsal view E) Ventral vie

FIGURE 17 in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 17. Female Pseudoanthidium flaviventre (Cameron) A) Face B) Mandible C) Scopa D) Dorsal view E) Ventral view

FIGURE 10 in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 10. Male Eoanthidium salemense (Cockerell) A) Face B) Tergal apical segments C) Genitalia D) S 8 E) Dorsal view F) Ventral view

FIGURE 13. Female Euaspis edentate Baker A in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 13. Female Euaspis edentate Baker A) Face B) Mandible C) Tergal apical segments D) Sternum apical segments E) Dorsal view F) Ventral view

FIGURE 20 in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 20. Male Pseudoanthidium rotundiventre (Pasteels) A) Face B) Tergal apical segments C) Genitalia D) Dorsal view E) Ventral view

FIGURE 14. Male Euaspis edentate Baker A in The Resin and Carder bees of south India (Hymenoptera: Megachilidae: Anthidiini)

FIGURE 14. Male Euaspis edentate Baker A) Face B) Sternum apical segments C) Genitalia D) S 8 E) Dorsal view F) Ventral view

FIGURES 5 – 11 in A new species of the genus Discoelius Latreille, 1809 (Hymenoptera: Vespidae: Eumeninae) from India

FIGURES 5 – 11. Discoelius vasukii sp. nov., ♀, 5. Posterior portion of mesosoma; 6. Mesosoma, lateral view; 7. Posterior portion of propodeum; 8. Lower lateral portion of propodeum; 9. T 1, dorsal view; 10. T 2, dorsal view; 11. Posterior metasomal segments, dorsal view

Life Span Changes of Coffee White Stem Borers, Xylotrechus quadripes (Coleoptera: Cerambycidae) in Response to Directed Homosexual and Heterosexual Interactions

Our study on coffee white stem borers, Xylotrechus quadripes investigated the influence of different sex-based clustering factors on beetle survivorship and life spans. Our experiments involved various groups, including individually isolated virgin males, individually isolated virgin females, groups of only males, groups of only females, and mixed-sex groups. First, survivorship reached 100% within the initial 15 days for all groups except for isolated virgin males. In contrast, the survivorship rates of both groups involving only virgin females and only virgin males ranged from 80% to 90% compared to the maximum survival duration.  Notably, in scenarios with males in groups or mixed-gender groups, survival dropped to zero percent after 45 days. Our study also highlighted the comparable costs incurred by males engaging in both homosexual and heterosexual interactions. Males interacting with females and other males exhibited similar survival curves, displaying shorter median life spans compared to isolated virgin males, suggesting that both courting and mounting behaviors, regardless of the recipient's sex, might affect the life span of males. Furthermore, our research revealed that female-female interactions, while less costly than male-male interactions, still reduced survival periods in only the female group. These findings highlight the cost possibly associated with same-sex interactions and shed light on the dynamics of mating behaviors in this beetle. In conclusion, our findings underscore the significance of studying behavioral and life history traits in different environmental contexts. Social circumstances and ecological factors significantly influence sexual differences in lifespan and highlight the complexity of the interplay between reproductive strategies and survival rates in Xylotrechus quadripes