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53 results for “Acasta”
FIGURE 5 in Revision of the coral-inhabiting genus Conopea (Cirripedia: Archaeobalanidae) with description of two new species of the genera Conopea and Acasta
FIGURE 5. Conopea titani sp. nov., cirri and penis. (A) Cirrus IV. (B) Cirrus IV, basis and basal segments. (C) Tip of penis. (D) Base of penis with basidorsal point. Scale bars in µm.
FIGURE 8 in Revision of the coral-inhabiting genus Conopea (Cirripedia: Archaeobalanidae) with description of two new species of the genera Conopea and Acasta
FIGURE 8. Acasta vivicava sp. nov., mouth parts, cirri and penis. (A) Labrum with palps. (B), (D) Mandibles. (C), (E) Lower parts of mandibles (inferior angles). (F), (G) Maxillules. (H) Maxilla. (I) Cirrus III. (J) Base of penis. Scale bars in µm.
FIGURE 2 in Revision of the coral-inhabiting genus Conopea (Cirripedia: Archaeobalanidae) with description of two new species of the genera Conopea and Acasta
FIGURE 2. Conopea titani sp. nov., shell compartments and scuta. (A) Margin of basis showing irregular rows of deep pits for articulation with basal ribs of parietes. (B) Inner surface of carinolatus 2 showing sheath and prominent basal ribs. (C), (D) Right scutum, outer and inner view. (E), (F) Left scutum, inner and outer view. Scale bars in µm.
FIGURE 2 in The acasta conundrum: Polymorphism and taxonomic confusion within the parasitoid genus Melittobia (Hymenoptera: Eulophidae)
FIGURE 2. Variation in M. megachilis from a single culture. a–c: antennae of different first-brood males, showing range of variation. d: antenna of second-brood male. e: forewing of first-brood male. f: forewing of second-brood male. g: middle leg of first-brood male. h: middle leg of second-brood male.
FIGURE 1 in The acasta conundrum: Polymorphism and taxonomic confusion within the parasitoid genus Melittobia (Hymenoptera: Eulophidae)
FIGURE 1. Examples of Melittobia polymorphism. a: long-winged (MF) female of Melittobia digitata; b: short-winged (BF) M. digitata; c: second-brood male of M. femorata (= megachilis); d: first-brood male of M. femorata (= megachilis).
FIGURE 27. Acasta sulcata. Cirri I in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 27. Acasta sulcata. Cirri I (A̅E) and II (F̅I) (ASIZCR000369). A, rami of cirrus I (basal part broken); B, protopod and posterior ramus (anterior ramus broken); C, intermediate segments of anterior ramus; D, serrulate setae on anterior ramus; E, bifid setae on posterior ramus; F, cirrus II, pappose and plumose setae enlarged in rectangle area; G, intermediate segments of posterior ramus; H, bifid and serrulate setae on posterior ramus; I, bifid and serrulate setae on anterior ramus. Scale bars in µm.
FIGURE 29. Acasta sulcata. Cirri V in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 29. Acasta sulcata. Cirri V (A̅D), VI (E̅G) and penis (H̅J) (ASIZCR000369). A, Cirrus V; B, serrate setae on anterior ramus; C, sharp denticles on anterior ramus enlarged in rectangle area; D, 3 pairs of setae and denticles on intermediate segments; E, Cirrus VI; F, terminal segment of posterior ramus with serrate setae enlarged in rectangle area; G, 3 pairs of setae on intermediate segments; H, penis; I, long setae on tip; J, vestigial basidorsal point of penis. Scale bars in µm.
Fig. 28 in Four new sponge-inhabiting barnacles of the genus Acasta (Thoracica: Archaeobalanidae: Acastinae) from the Indo-Pacific
Fig. 28. Acasta sandwichi sp. nov., cirri (SEM, paratype). A, Left pairs of cirri with penis; B, Cirrus I; C, Annuli of rami of cirrus I; D, Terminal annuli of anterior ramus of cirrus I; E, Cirrus II; F, Middle annuli of cirrus II; G, Cirrus III; H, Basal and middle annuli of cirrus III; I, Cirrus IV; J, Basal and middle annuli of cirrus IV; K, Cirrus V; L, Middle annuli of cirrus V. Abbreviations: ar = anterior ramus, c2 to c6 = cirri II to cirri VI, lb = labrum, pe = penis. Scale bars in µm.
Fig. 15 in Four new sponge-inhabiting barnacles of the genus Acasta (Thoracica: Archaeobalanidae: Acastinae) from the Indo-Pacific
Fig. 15. Acasta clausa sp. nov., shell, general view and compartments (holotype: A, B, D–K; paratype: C from Taiwan). A, B, Complete shell, left and right side; C, Complete shell, left side; D, E, Rostrum, external and internal surface; F, G, Carina, external and internal surface; H, I, Carinolatus 1, external and internal surface; J, K, Carinolatus 2, external and internal surface. Abbreviations: ba = basis, ca = carina, cl1 = carinolatus 1, cl2 = carinolatus 2, r = rostrum, sc = scutum, te = tergum. Scale bars in µm.
Fig. 6 in Four new sponge-inhabiting barnacles of the genus Acasta (Thoracica: Archaeobalanidae: Acastinae) from the Indo-Pacific
Fig. 6. Acasta turriformis sp. nov., maxillae and penis (SEM, paratype). A, Maxillae, lateral view; B, Distal part of maxilla; C, Serrated setae on proximal part of maxilla; D, Biserrate setae and combs of fine setae in basal part of maxillae; E, Stub setae in upper-lateral part of lower lobe; F, G, Basal and terminal parts of penis; Abbreviations: c2 to c6 = cirri II to cirri VI, pe = penis. Scale bars in µm.
Figure 1 from: Gonzalez J, Cusumano A, Colazza S, Vinson S (2012) First report of Melittobia australica Girault in Europe and new record of M. acasta (Walker) for Italy. ZooKeys 181: 45-51. https://doi.org/10.3897/zookeys.181.2752
Figure 1 - Males of Melittobia parasitoid wasps: a Melittobia acasta b Melittobia australica. Scale: 0.5 mm
Non-invasive 3D visualization of the sponge-inhabiting barnacle Acasta sulcata (Crustacea: Cirripedia: Balanomorpha) from the Moluccas, Indonesia
<p>We present a digital reconstruction (video) of non invasive microCT scans of barnacle specimens (<em>Acasta sulcata</em>; catalogue number MZB Cru Cir 185, Indonesia) embedded in their sponge host (<em>Spongia</em> sp.) from the Indonesian island Saparua, Moluccas (for details see Pitriana et al. 2020; doi: <a href="http://dx.doi.org/10.14203/treubia.v47i2.3968">10.14203/treubia.v47i2.3968</a>). </p> <p>The sponge specimen, which was supposed to host barnacles, was subjected to micro-tomographic analysis at the Museum für Naturkunde Berlin, using a Phoenix nanotom X-rays tube at 90 kV and 150 µA, generating 1440 projections. The specimen was fixed with foam in a sealed plastic tube in an ethanol-saturated atmosphere. Cone beam reconstruction was performed using the phoenix/x-ray datos/x version 2.3.3 software (GE Sensing and Inspection Technologies GmbH). Effective voxel size, i.e. resolution in three-dimensional space, is 13.33 µm. Data were visualized in VG Studio Max, version 3.1. In the video, barnacles are shown as an isosurface in red color, the surrounding sponge tissue as volume rendering in grey color (original length of sponge host 10 cm; length of barnacles approx. 2.5 mm).</p> <p>This study is part of Pipit Pitriana's PhD project (<a href="https://refubium.fu-berlin.de/handle/fub188/29031">https://refubium.fu-berlin.de/handle/fub188/29031</a>) funded by the Ministry of Research, Technology and Higher Education, the Republic of Indonesia within the Program for Research and Innovation in Science and Technology (RISET-Pro), World Bank Loan No. 8245-ID. We thank Kristin Mahlow and Johannes Müller for their support at the MfN Berlin and Frank Riedel (FU Berlin) for his general support.</p>
Figure 2 from: Gonzalez J, Cusumano A, Colazza S, Vinson S (2012) First report of Melittobia australica Girault in Europe and new record of M. acasta (Walker) for Italy. ZooKeys 181: 45-51. https://doi.org/10.3897/zookeys.181.2752
Figure 2 - Male antennae of Melittobia acasta a and Melittobia australica b. Scale: 0.25 mm.
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