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58 results for “Lebanese amber”
Fig. 1 in A new deinopoid spider from Cretaceous Lebanese amber
Fig. 1. Anatomy of extant deinopid spiders. A. Avella sp. male (WAM 97/2350). Pedipalp, ventral (A1) and lateral (A2) views; eyes, anterior view (A3). B. Menneus camelus male (NCP 95/241). Pedipalp, ventral (B1) and lateral (B2)views; eyes, anterior view (B3). C. Deinopis sp. male (NCP 2000/480). Pedipalp, ventral view (C1); eyes, anterior view (C2). D. Avellopsis capensis juvenile male (MRAC 207.457), eyes, anterior view. For the structure of the mature male pedipalp of A. capensis see Lehtinen (1967: fig. 37). Scale bars: A1, A2, B1, B2, C1, 0.2 mm; A3, B3, C2, D, 1.0mm. Abbreviations: ALE, ante − rior lateral eye; AME, anterior median eye; c, conductor; cy, cymbium; e, embolus; PLE, posterior lateral eye; PME, posterior median eye; t, tegulum.
Fig. 2 in A new deinopoid spider from Cretaceous Lebanese amber
Fig. 2. Palaeomicromenneus lebanensis gen. et sp. nov. Holotype male. Cretaceous Lebanese amber, MHNP 723A. A. Dorsal view. B. Ventral view. C. Calamistrum on metatarsus 4. D. Carapace, dorsal view. E. Spinneret region. F. Pedipalps in lateral view as seen from below. G. Left pedipalp in lateral view showing diagnostic features. Scale bars: A, B, D, 1.0 mm; C, F, G, 0.5 mm; E, 0.1 mm. Abbreviations: ALE, anterior lateral eye; as, anterior spinneret; at, anal tubercle; c, conductor; cal, calamistrum; car, carapace; cy, cymbium; e, embolus; mt4, metatarsus 4; op, opisthosoma; p, pedipalp; PME, posterior median eye; ps, posterior spinneret; t, tegulum.
FIGURE 1 in A New Bethylid Wasp in Lebanese Early Cretaceous Amber (Hymenoptera: Chrysidoidea), with Comments on other Mesozoic Taxa
FIGURE 1. Microphotographs of the holotype female of Holopsenella primotica, new genus and species (AMNH L-924), in Lebanese Early Cretaceous amber (scale bars = 1 mm). A. Dorsal view. B. Ventral view. C. Lateral view.
FIGURE 2 in A New Bethylid Wasp in Lebanese Early Cretaceous Amber (Hymenoptera: Chrysidoidea), with Comments on other Mesozoic Taxa
FIGURE 2. Holotype female of Holopsenella primotica, new genus and species (AMNH L-924), in Lebanese Early Cretaceous amber (scale bars A, B, D = 1 mm; C = 0.5 mm). A. Lateral view. B. Dorsal view. C. Forewing (d = discoidal cell; sd = subdiscoidal cell). D. Lateral, ventral-oblique view of metasoma.
Figs 18–20 in New chironomid flies in Early Cretaceous Lebanese amber (Diptera: Chironomidae)
Figs 18–20. Cretadiamesa arieli gen. et sp. n., male, holotype 365: (18) general habitus, scale bar = 0.5 mm; (19) wing, scale bar = 0.3 mm; (20) details of male genitalia, scale bar = 0.1 mm.
Figs 15–17 in New chironomid flies in Early Cretaceous Lebanese amber (Diptera: Chironomidae)
Figs 15–17. Libanodiamesa deploegi gen. et sp. n., holotype 66: (15) general habitus; (16) forewing; (17) details of forewing venation. Scale bars = 0.5 mm.
Figs 1–3 in New chironomid flies in Early Cretaceous Lebanese amber (Diptera: Chironomidae)
Figs 1–3. Libanopelopia cretacica gen. et sp. n., holotype HAR 2: (1) details of general habitus; (2) wing; (3) general habitus. Scale bars = 1 mm in Figs 1, 3 and 0.5 mm in Fig. 2.
Fig. 9 in New chironomid flies in Early Cretaceous Lebanese amber (Diptera: Chironomidae)
Fig. 9. Lebanorthocladius furcatus gen. et sp. n., holotype 5B, general habitus, scale bar = 0.5 mm.
Figs 4–6 in New chironomid flies in Early Cretaceous Lebanese amber (Diptera: Chironomidae)
Figs 4–6. Cretapelopia salomea gen. et sp. n., holotype 309: (4) details of general habitus, scale bar = 1 mm; (5) wing, scale bar = 0.5 mm; (6) male genitalia, scale bar = 0.2 mm.
Figs 9–11 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 9–11. Neazonia tripleta sp. n.: (9) Abdomen and end of body in dorsal view; (10) Ventral portion of abdomen; (11) Pygofer from below. Scale bars = 1 mm.
Figs 24–27 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 24–27. General appearance of Neazonia: (24) N. tripleta sp. n., dorsal view; (25) N. tripleta sp. n., ventral view; (26) N. immatura sp. n., dorsal view; (27) N. immatura sp. n., ventral view.
Figs 1–8 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 1–8. Neazonia tripleta sp. n.: (1) Anterior portion of body; (2) Face; (3) Antenna; (4) Right fore leg; (5) Right fore tarsus; (6) Right mid leg; (7) Left hind leg; (8) Set of sensory pits of abdominal segment. Scale bars: Figs 1, 2, 7 = 1 mm; Figs 4, 6 = 0.5 mm; Figs 3, 5 = 0.1 mm; Fig. 8 = 0.05 mm.
Figs 20–23 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 20–23. Neazonia immatura sp. n.: (20) Hind coxae, (21) Abdomen in dorsal view, (22) Abdominal pleural region, (23) Pygofer in dorsal view. Scale bars: Figs 20, 21, 23 = 1 mm; Fig. 22 = 0.5 mm.
Figs 12–19 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 12–19. Neazonia immatura sp. n.: (12) Face, (13) Set of sensory pits of face, (14) Right half of prothorax, (15) Right half of mesothorax, (16) Right fore leg, (17) Left hind leg, (18) Right hind leg, (19) Right hind tarsus. Scale bars: Figs 12, 14–19 = 1 mm; Fig. 13 = 0.1 mm.
Figs 28–29 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 28–29. General appearance of Neazonia imprinta sp. n.: (28) lateral view, light microscopy; (29) lateral view, SEM (courtesy Dany Azar).
Figs 30–31 in Nymphs of a new family Neazoniidae fam. n. (Hemiptera: Fulgoromorpha: Fulgoroidea) from the Lower Cretaceous Lebanese amber
Figs 30–31. SEM of Neazonia imprinta sp. n. (courtesy Dany Azar): (30) anterior part of body; (31) details of thorax. Scale bars = 100 µm.
Data from: The hatching mechanism of 130-million-year-old insects: an association of neonates, egg shells and egg bursters in Lebanese amber
Hatching is a pivotal moment in the life of most animals. Diverse chemical, behavioural and mechanical methods have evolved in metazoans to break the egg membranes. Among them, many arthropod and vertebrate embryos hatch using ephemeral, frequently convergent structures known as egg bursters. However, the evolutionary processes by which hatching mechanisms and related embryonic structures became established in deep time are poorly understood due to a nearly complete absence from the fossil record. Herein we describe an exceptional c. 130‐million‐year‐old association in Lebanese amber composed of multiple neonate green lacewing larvae, Tragichrysa ovoruptora gen. et sp. nov. (Neuroptera, Chrysopoidea), and conspecific egg remains. Egg bursters with a serrated blade bearing a short process are attached to three longitudinally split egg shells. Embryos of extant green lacewing relatives (Chrysopidae) utilize this egg burster morphotype to open a vertical slit on the egg, after which the burster is moulted and left joined to the empty egg shell. Additionally, the new larval species has extremely elongate dorsal tubercles, an adaptation to carry exogenous debris for protection and camouflage also known from other Cretaceous chrysopoids but absent in modern relatives. The present discovery demonstrates that the hatching mechanism of modern green lacewings was established in the chrysopoid lineage by the Early Cretaceous and proves through direct fossil evidence how some morphological traits related to hatching and linked behaviours, at least in insect embryos, have been subject to a high degree of evolutionary conservatism.
Data from: The hatching mechanism of 130-million-year-old insects: an association of neonates, egg shells and egg bursters in Lebanese amber
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FIGURE 1. Wadi Jezzine amber outcrop. A in Redescription of Minyohelea nexuosa (Diptera: Ceratopogonidae) based on a new specimen from Lebanese amber
FIGURE 1. Wadi Jezzine amber outcrop. A, Geological map of Wadi Jezzine amber outcrops (modified from Dubertret, 1950). J6 = Terminal Jurassic; C1 = Salima Formation (lower Valanginian); C2a = lower Barremian "Grès du Liban" sandstone; C2b = Barremian clay and oolitic deposition of the upper part of the "Grès du Liban" and oolitic deposition of the lower part of the Jezzinian; C3 = micritic part of the Jezzinian (uppermost Barremian–lowermost Aptian); C4 = Albian; C5 = Cenomanian; Q = Quaternary scree; βC2 = Barremian volcanic deposition. Thickened lines represent faults. Red arrow shows the amber outcrop locality. B, Drone general view of the site. C, Detailed view of the outcrop with the red arrow indicating the layers yielding amber.
FIGURE 2 in Redescription of Minyohelea nexuosa (Diptera: Ceratopogonidae) based on a new specimen from Lebanese amber
FIGURE 2. Minyohelea nexuosa, specimen No. JEZ-F 11. A, Total habitus. B, Male genital block. C, Drawing of right wing. Scale bars = 0.1 mm.
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