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Fig. 10 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 10. Male genitalia of Lucanus derani fukinukiae Katsura et Giang, 2002 from Yunnan, China. a – abdominal tergite VIII; b – abdominal sternite VIII; c–e – abdominal segment IX; f–h – aedeagus; (a, d, g – dorsal view; b, c, f – ventral view; e, h – lateral view). Scale bar = 1.0 mm.

Fig. 8 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 8. Male genitalia of Lucanus pesarinii Zilioli, 1998 from Vietnam. a – abdominal tergite VIII; b – abdominal sternite VIII; c–e – abdominal segment IX; f–h – aedeagus; (a, d, g – dorsal view; b, c, f – ventral view; e, h – lateral view). Scale bar = 1.0 mm.

Fig. 5 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 5. Lucanus zenghuae sp. n., male habitus of holotype. a – dorsal view; b – ventral view; c – lateral view. Scale bar = 1.0 cm.

Fig. 1 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 1. Lucanus niu sp. n., male habitus. a–c – large size, holotype; d–f – moderate size, paratype; g–i – small size, paratype; (a, d, g – dorsal view; b, e, h – ventral view; c, f, i – lateral view). Scale bar = 1.0 cm.

Fig. 3 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 3. Male habitus of Lucanus vitalisi Pouillaude, 1913 from Yunnan, China. a–c – large size; d–f – moderate size; g–i – small size; (a, d, g – dorsal view; b, e, h – ventral view; c, f, I – lateral view). Scale bar = 1.0 cm.

Fig. 2 in Two new species of Lucanus Scopoli, 1763 from Yunnan, Southwest China (Coleoptera, Lucanidae, Lucaninae)

Fig. 2. Lucanus niu sp. n., male genitalia of holotype. a – abdominal tergite VIII; b – abdominal sternite VIII; c–e – abdominal segment IX; f–i – aedeagus (penis removed in g); (a, d, h: – dorsal view; b, c, f, g: – ventral view; e, i: l– ateral view). Scale bar = 1.0 mm.

Figure 3 in Two new species of microdispid mites (Acari: Heterostigmata: Pygmephoroidea) associated with Lucanus ibericus (Coleoptera: Lucanidae)

Figure 3 Premicrodispus gorganiensis sp. nov., female. A – leg III, B – leg IV.

Figure 2 Premicrodispus gorganiensissp. nov., female. A – leg I, B – leg II in Two new species of microdispid mites (Acari: Heterostigmata: Pygmephoroidea) associated with Lucanus ibericus (Coleoptera: Lucanidae)

Figure 2 Premicrodispus gorganiensissp. nov., female. A – leg I, B – leg II.

Figure 6 in Two new species of microdispid mites (Acari: Heterostigmata: Pygmephoroidea) associated with Lucanus ibericus (Coleoptera: Lucanidae)

Figure 6 Neomicrodispus lucani sp. nov., female. A – leg III, B – leg IV.

Figure 5 in Two new species of microdispid mites (Acari: Heterostigmata: Pygmephoroidea) associated with Lucanus ibericus (Coleoptera: Lucanidae)

Figure 5 Neomicrodispus lucani sp. nov., female. A – leg I, B – leg II.

opencc-zeroApr 2023View details →

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Genomic tools for comparative conservation genetics among three recently diverged stag beetles (Lucanus, Lucanidae)

<p>We are witnessing a rapid decline in global biodiversity. International protocols and local conservation laws have been installed to counter such an unprecedented rate of decline. However, quantitatively evaluating how much biodiversity has been lost due to climatic and anthropogenic effects and how much biodiversity has been restored due to conservation efforts remain challenging. We applied a comparative conservation genomic approach to statistically and quantitatively address these questions using three geographical taxa from a stag beetle species complex. We found that the three sky-island taxa formed three independently evolving units without detectable post-divergence gene flow; furthermore, the three taxa, which have been divergent from each other since the mid-Pleistocene, have experienced episodes of demographic decline in the past. More importantly, even though idiosyncratic anthropogenic exploitations have been hypothesized to impact the recent demographic history (< 100 years) differently, we found a shared pattern of continuous decline in effective population size among the three geographical taxa. We argue that future empirical studies should include more taxa, in addition to the focal species, that may or may not be affected by the focal historical events to avoid making biased conservation plans.</p>

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Genomic tools for comparative conservation genetics among three recently diverged stag beetles (Lucanus, Lucanidae)

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publicJun 2023View details →

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Data from: Modeling the effects of anthropogenic exploitation and climate change on an endemic stag beetle, Lucanus miwai, of Taiwan

Loss of biodiversity is a worldwide phenomenon and conservation of endemic species is becoming a pressing issue. However, species differ in life history characteristics, causing the best strategy for conservation to vary among species. Lucanus miwai is an endemic stag beetle of Taiwan, but the natural history and the conservation status of L. miwai have not been fully studied. Lucanus miwai adults live in forest-edge grassland habitats and are experiencing threats from anthropogenic exploitation. Additionally, climate change may threaten its long-term survival because of its specific habitat preference. Results from this study clearly indicate the need for more studies on the natural history of L. miwai and demonstrate that contemporary intensity of anthropogenic exploitation can have a negative effect on population size of this species. Future habitat loss because of global climate change, in addition, can be another major factor leading to population decline. Moreover, increasing demands on L. miwai because of population decline may lead to population extinction. In addition to protecting adult males from being collected, conservation strategies should also focus on discovering habitats utilized by individuals from different life stages, investigating the connectivity between populations, and maintaining the long-term availability of suitable habitats for L. miwai.

opencc-zeroDec 2013View details →

opennotspecifiedDec 2011View details →

FIGURES 39–41. Spermatheca. 39 in Description of two new species of Lucanus Scopoli (Coleoptera: Scarabaeoidea: Lucanidae) from southeastern Tibet, China

FIGURES 39–41. Spermatheca. 39—Lucanus imitator (Bomi, Tibet); 40—Lucanus singularis (Chayu, Tibet); 41—Lucanus cheni (Motuo, Tibet). Abbreviations: l, length of the non-curved part as shown in length of the double arrow. FIGURES 42–44. Central conjunction of the 9th tergites of female. 42—Lucanus imitator (Bomi, Tibet); 43—Lucanus singularis (Chayu, Tibet); 44—Lucanus cheni (Motuo, Tibet).

opennotspecifiedDec 2011View details →

FIGURES 27–31 in Description of two new species of Lucanus Scopoli (Coleoptera: Scarabaeoidea: Lucanidae) from southeastern Tibet, China

FIGURES 27–31. Penis in ventral view. 27—Lucanus langi (same specimen as in Fig. 8); 28—Lucanus langi (same specimen as in Fig.7); 29—Lucanus imitator (Bomi, Tibet); 30 —Lucanus imitator (Dongjiu, Tibet); 31—Lucanus singularis (Chayu, Tibet). Scale bars 1 mm for all. Abbreviations: b, end of basal belt of flagellum; w, width of one branch of the ventral sclerite in penis (showing difference between Lucanus langi and Lucanus imitator).

opennotspecifiedDec 2011View details →

FIGURES 6–9 in Description of two new species of Lucanus Scopoli (Coleoptera: Scarabaeoidea: Lucanidae) from southeastern Tibet, China

FIGURES 6–9. Lucanus langi habitus in dorsal view. 6—male holotype; 7, 8—male paratypes; 9—female paratype. FIGURES 10–13. Male head in dorsal or anterodorsal view to show clypeolabrum and details of mandibles. 10—Lucanus cheni holotype; 11—Lucanus langi paratype; 12—Lucanus langi paratype (same specimen as in Fig. 8); 13—Lucanus smithii (Kurseong, India, photo by A. Galant). Abbreviations: s, basal part of mandible swollen and serrate on inner margin; b, clypeolabrum bifurcate at tip; nb, clypeolabrum non-bifurcate; ns, basal part of mandible non-serrate and not swollen. FIGURES 14–15. Lucanus langi, part of habitus in ventral view. 14—male paratype (same specimen as in Fig. 7); 15—female paratype (same specimen as in Fig. 9).

Fig. 10 in Demographic data on a stag beetle (Lucanus cervus) population self-established in an artificial suburban habitat

Fig. 10. Yearly number of stag beetles found dead by predation at the Jagersveld CMR site during the period 2001- 2023. Areas in grey refer to predation by Corvids, areas in yellow to predation by hedgehogs. The annual sex-ratio measured on these beetle remains is indicated, as is the yearly total number of beetles killed by predators and the total number of natural deaths.

Fig. 9 in Demographic data on a stag beetle (Lucanus cervus) population self-established in an artificial suburban habitat

Fig. 9. Variation, as a function of year, of the mean and standard error of head width (KB) of males found dead at the Jagersveld CMR site. Numbers indicate the size of the samples, and letters and colors indicate samples not significantly differing in size from each other at the P = 0.05 threshold, by using the non-parametric Kruskal-Wallis test for multiple comparisons. Samples of years 1924 and 2021 were excluded from the K-W analysis.

Fig. 8 in Demographic data on a stag beetle (Lucanus cervus) population self-established in an artificial suburban habitat

Fig. 8. Box plots of total length (TL) of stag beetles measured in the order of their first appearance at the Jagersveld site during the capture-mark-recapture exercise of 2007. Median, quartiles and extremes of male sizes over successive weeks and of female sizes over successive ten-day periods.

Fig. 6 A-B in Demographic data on a stag beetle (Lucanus cervus) population self-established in an artificial suburban habitat

Fig. 6 A-B. Survivorship curves of marked male stag beetles during (A) the 2001 and (B) 2007 CMR exercises, in function of death as end event. Kaplan-Meyer step-curves with 95% upper and lower confidence bounds. The arrows indicate the medians of the known life span. A Weibull curve is drawn over the K-M curve. C: illustrating the lack of statistical difference between the 2001 and 2007 K-M curves.