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10 results for “Sepedonella”
FIGURE 10. Sepedonella nana. A–B in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 10. Sepedonella nana. A–B, third-instar larva. A, mouthhook showing position of accessory teeth and a typical sclerotized expansion. B, ventral arch with details of the anterior denticulate margin. C–D, puparium. C, dorsal view. D, lateral view. ant, anterior end; da, accessory teeth; dt, denticle; post, posterior end; s ex, sclerotized expansion.
FIGURE 8. Sepedonella nana. A–E, thoracic sensilla. A in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 8. Sepedonella nana. A–E, thoracic sensilla. A, distribution on one hemi-segment of the 1–11 sensilla. B, coeloconicum sensillum (n°4). C, ampulaceum sensillum (n°1) and Keilin organ (n°2). D, chaeticum (n°8) and coeloconicum (n°9) sensilla. E, pair of the dorsal chaeticum sensilla (n°11). F, schematic distribution of the 1–11 sensilla on each hemi-abdominal segment according to three distinct abdominal portions, ab1-ab6, ab7 and ab8. bt1-bt3, dorsal transversal bands 1–3; lt1-lt3, lateral tubercles 1–3; vt1-vt3, ventral tubercles 1–3. Sensillum:, chaeticum type; *, coeloconicum type; **, flower type. Dotted arrows show hypothesis concordance between tubercles and sensilla on abdominal segment 7 and on different parts of abdominal segment 8.
FIGURE 7. Sepedonella nana, abdominal segments. A, B in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 7. Sepedonella nana, abdominal segments. A, B, first-instar larva. A, posterior end in ventral view showing particularly the relationships between disposition of sensilla on abdominal segments 7 and 8 (dotted arrows). B, details of the spiracular disc, frontal view. C–F, second instar-larva. C, details of the spiracular disc. D, details of sensilla positioned on basal part of ventro-lateral lobe (= dotted encircled on precedent figure). E, details on a dorsal swimming tuft. F, segment ab7 in dorsal view showing sensillum distribution on both sides of abdominal axis, noted absence of the swimming tufts. Ab6, ab7, ab8, abdominal segments 6, 7, 8; ap, anal plate; dl, dorsal lobe; ip, interspiracular processes; ll, lateral lobe; lt, lateral tubercle; pr a, preanal lobe; sp, spiracular plate; ss, stigmatic scar; vl, ventral lobe; vll, ventro-lateral lobe; vt2, vt3, ventral tubercles 2, 3; Arabic numbers (including 11a), number affected to each sensillum.
FIGURE 6. Sepedonella nana. A, B, anterior spiracle. A in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 6. Sepedonella nana. A, B, anterior spiracle. A, second instar; B, third instar. C–F, first instar abdominal segments. C, dorsal subdivision in three transversal bands (bt1-bt3) of abdominal segment 1 (ab1); D, dorsolateral view of abdominal segments 6 and 7 showing mainly lateral tubercles (lt1-lt3) and placements of sensilla; E, disposition of the three ventral tubercles (vt1-vt3) on an abdominal hemi-segment; F, enlargement of ventral tubercle vt2 showing an apparent additional sensillum due to exceptional arrangement of some cuticular expansions (arrow) delimiting the ventral tubercle. ab1, ab6, ab7, ab8, abdominal segments 1, 6, 7; as, anterior spiracle; bt1-3, transversal band 1–3; lt1-3, lateral tubercles 1–3; mb, membrane; pa, papilla; ss, stigmatic scar; sw t, swimming tuft; vt1-vt3, ventral tubercles 1–3; Arabic numbers, number affected to each sensillum.
FIGURE 4 in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 4. Feeding behaviour of Sepedonella nana larvae (predator) on Aulophorus furcatus oligochaete (prey). A, thirdinstar larvae (L3) attacking and eating A. furcatus inside of their tube. B, assemblage of A. furcatus attacked by different instarlarvae of S. nana. C, naked A. furcatus. D, A. furcatus escaping the assaults of the sciomyzid larva moving back out at the end of its tube. E, details on duration (in days) of immature instars and total life cycle. L1, L3, first- and third-instar larva.
FIGURE 3 in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 3. Sepedonella nana, population dynamic of the adults in temporary freshwater habitats in Benin. Two other constant sciomyzid species always found together and rainfall are indicated for each cited year.
FIGURE 1. A in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 1. A, location of the Republic of Benin in West Africa. B, Sepedonella nana, first distribution map in Republic of Benin based on our field prospection during the period 1996–2008. Only localities quoted in the present work are indicated here.
FIGURE 5. Sepedonella nana. A–C, egg. A, anterior end showing general aspect. B in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 5. Sepedonella nana. A–C, egg. A, anterior end showing general aspect. B, anterior end, ventral view noted by presence of the micropyle (mi). C, posterior end. D–G, first-instar larva. D, cephalic (I) and the two first thoracic (II, III) segments, frontoventral view. E, cephalic segmented frontal view. F, part of the first thoracic segment, latero-ventral view. G, Keilin organ. Arabic numbers, position of sensilla from ventral to dorsal on each segment; dotted lines, separation of segments. ae, aeropyles; ant, anterior extremity; ao, antennal organ; ce, cuticular expansion; dr, dorsal ridge; hx, hexagonal structure; ko, Keilin organ; lr, lateral ridge; ls, labial sensilla; m, mouth; mi, micropyle; mo, maxillary organ; pos b, post oral spinule band; Tsv B, transversal spinulated ventral band; I–III, segments 1–3; Arabic numbers, number affected to each sensillum.
FIGURE 2 in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 2. Sepedonella nana, population dynamic of the adults in permanent freshwater habitats in Benin. Two other constant sciomyzid species always found together and rainfall are indicated for each cited year.
FIGURE 9. Sepedonella nana, cephalopharyngeal skeleton. A–B in Biology of the Afrotropical Sepedonella nana (Diptera: Sciomyzidae), whose larvae feed only on freshwater Aulophorus furcatus (Oligochaeta: Naididae)
FIGURE 9. Sepedonella nana, cephalopharyngeal skeleton. A–B, first-instar larva. A, anterior part, details. B, entire view. C– I, second-instar larva. C, entire view. D, epistomal sclérite and parastomale bars. E, general disposition of épistomal slerite, parastomal bars and hypostomal sclérite (idem in follow stadium). F, mouthhook. G, ventral arch. H, lingual slerite. I, hypostomal sclerite. J–O, third-instar larva. J, entire. K, epistomal sclerite; L, mouthhook; M, ventral arch; N, lingual sclerite; O, hypostomal sclerite. da, accessory teet; dc, dorsal cornua; es, épistomal sclérite; hs, hypostomal sclerite; ls, lingual sclerite; mh, mouthhook; pb, parastomal bar; ps, pharyngeal sclérite; va, ventral arch; vc, ventral cornua.
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