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Systematics and biology of the new genus Macrosaccus with descriptions of two new species (Lepidoptera, Gracillariidae).

Davis DR, De Prins J - Zookeys (2011)

Bottom Line: The new genus Macrosaccus Davis & De Prins is proposed for three species formerly assigned to the genus Phyllonorycter: Macrosaccus robiniella (Clemens), Macrosaccus morrisella (Fitch), and Macrosaccus uhlerella (Fitch); two new, closely related species: Macrosaccus neomexicanus Davis and Macrosaccus gliricidius Davis, are also proposed.Descriptions of the adults, pupae, larvae, life histories, and distributions are supplemented with photographs, line drawings, and scanning electron micrographs.The genus is endemic to the New World, with the invasive species Macrosaccus robiniella now widely established in Europe.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012 MRC 105, Washington, D.C. 20013-7012, U.S.A.

ABSTRACT
The new genus Macrosaccus Davis & De Prins is proposed for three species formerly assigned to the genus Phyllonorycter: Macrosaccus robiniella (Clemens), Macrosaccus morrisella (Fitch), and Macrosaccus uhlerella (Fitch); two new, closely related species: Macrosaccus neomexicanus Davis and Macrosaccus gliricidius Davis, are also proposed. Descriptions of the adults, pupae, larvae, life histories, and distributions are supplemented with photographs, line drawings, and scanning electron micrographs. Larvae of all species are serpentine/blotch leaf miners on various genera of the plant family Fabaceae. The genus is endemic to the New World, with the invasive species Macrosaccus robiniella now widely established in Europe.

No MeSH data available.


Related in: MedlinePlus

Late tissue feeding instar larva of Macrosaccus robiniella. 72 Head, ventral view (100 µm) 73 Detail of mouthparts, ventral view (20 µm) 74 Lateral view of mouthparts (50 µm) 75 Lateral view of head (100 µm) 76 Thoracic leg (20 µm) 77 Abdominal segments 9, 10, dorsal view (100 µm). (Scale lengths in parentheses).
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Figure 16: Late tissue feeding instar larva of Macrosaccus robiniella. 72 Head, ventral view (100 µm) 73 Detail of mouthparts, ventral view (20 µm) 74 Lateral view of mouthparts (50 µm) 75 Lateral view of head (100 µm) 76 Thoracic leg (20 µm) 77 Abdominal segments 9, 10, dorsal view (100 µm). (Scale lengths in parentheses).

Mentions: Head: Approximately round with full complement of mouthparts; brown; maximum width (fifth instar) 0.35 mm. Frons elongate, ~ 0.85× the distance to epicranial notch. Ecdysial line terminating near epicranial notch. Chaetotaxy (Figs 91–92) relatively complete; all three MD setae present, arising caudad to P1. P1 arising adjacent to ecdysial line. P2 reduced, arising slightly caudad to reduced L1. Setae AF1–2 absent. A2 arising near A3 in a line between P1 and A3. C1 and 2 reduced, closely adjacent. Four stemmata present. Antenna 3-segmented; first segment moderately long; sensilla as shown in Fig. 70. Labrum (Figs 68, 95) strongly bilobed with raised median portion on each lobe; M1 absent; numerous secondary spines visible from inner, ventral perimeter of labrum. Mandible (Figs 71, 96) with three large median cusps and one smaller median and two lateral cusps; mandibular setae variable (1–2) and located on anterior surface. Hypopharynx with dense, well developed dorsal spines. Maxilla as shown in Fig. 69. Spinneret a relatively short tube with a simple, rounded apex. Labial palpus with a relatively long basal segment bearing one short sensillum and a much shorter (~ 0.25× length of basal segment) apical bearing a single long apical sensillum ~ 2× length of apical segment. Thorax: Setae XD1 and 2 short, of equal lengths on prothorax (T1). SD1 elongate, immediately ventral to XD2; SD2 absent on T1, present on T2–3L group bisenose on T1–3. SV unisetose on T1–3. Legs (Fig. 76) relatively short but fully developed; coxae widely separated, with 4 coxal setae; pretarsal claw moderately curved. Abdomen: D and SD groups bisetose on A1–8, 10; unisetose on A9; L group bisetose on A1–5, unisetose on A6–10. Prolegs present on A3–5, 10; crochets of A3–5 consisting of 17–24 small hooks arranged in a uniordinal circle; anal proleg with crochets consisting of 15–18 small hooks arranged in a uniordinal semicircle opened caudally (Fig. 79). Anal plate with 4 pairs of setae.


Systematics and biology of the new genus Macrosaccus with descriptions of two new species (Lepidoptera, Gracillariidae).

Davis DR, De Prins J - Zookeys (2011)

Late tissue feeding instar larva of Macrosaccus robiniella. 72 Head, ventral view (100 µm) 73 Detail of mouthparts, ventral view (20 µm) 74 Lateral view of mouthparts (50 µm) 75 Lateral view of head (100 µm) 76 Thoracic leg (20 µm) 77 Abdominal segments 9, 10, dorsal view (100 µm). (Scale lengths in parentheses).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3095132&req=5

Figure 16: Late tissue feeding instar larva of Macrosaccus robiniella. 72 Head, ventral view (100 µm) 73 Detail of mouthparts, ventral view (20 µm) 74 Lateral view of mouthparts (50 µm) 75 Lateral view of head (100 µm) 76 Thoracic leg (20 µm) 77 Abdominal segments 9, 10, dorsal view (100 µm). (Scale lengths in parentheses).
Mentions: Head: Approximately round with full complement of mouthparts; brown; maximum width (fifth instar) 0.35 mm. Frons elongate, ~ 0.85× the distance to epicranial notch. Ecdysial line terminating near epicranial notch. Chaetotaxy (Figs 91–92) relatively complete; all three MD setae present, arising caudad to P1. P1 arising adjacent to ecdysial line. P2 reduced, arising slightly caudad to reduced L1. Setae AF1–2 absent. A2 arising near A3 in a line between P1 and A3. C1 and 2 reduced, closely adjacent. Four stemmata present. Antenna 3-segmented; first segment moderately long; sensilla as shown in Fig. 70. Labrum (Figs 68, 95) strongly bilobed with raised median portion on each lobe; M1 absent; numerous secondary spines visible from inner, ventral perimeter of labrum. Mandible (Figs 71, 96) with three large median cusps and one smaller median and two lateral cusps; mandibular setae variable (1–2) and located on anterior surface. Hypopharynx with dense, well developed dorsal spines. Maxilla as shown in Fig. 69. Spinneret a relatively short tube with a simple, rounded apex. Labial palpus with a relatively long basal segment bearing one short sensillum and a much shorter (~ 0.25× length of basal segment) apical bearing a single long apical sensillum ~ 2× length of apical segment. Thorax: Setae XD1 and 2 short, of equal lengths on prothorax (T1). SD1 elongate, immediately ventral to XD2; SD2 absent on T1, present on T2–3L group bisenose on T1–3. SV unisetose on T1–3. Legs (Fig. 76) relatively short but fully developed; coxae widely separated, with 4 coxal setae; pretarsal claw moderately curved. Abdomen: D and SD groups bisetose on A1–8, 10; unisetose on A9; L group bisetose on A1–5, unisetose on A6–10. Prolegs present on A3–5, 10; crochets of A3–5 consisting of 17–24 small hooks arranged in a uniordinal circle; anal proleg with crochets consisting of 15–18 small hooks arranged in a uniordinal semicircle opened caudally (Fig. 79). Anal plate with 4 pairs of setae.

Bottom Line: The new genus Macrosaccus Davis & De Prins is proposed for three species formerly assigned to the genus Phyllonorycter: Macrosaccus robiniella (Clemens), Macrosaccus morrisella (Fitch), and Macrosaccus uhlerella (Fitch); two new, closely related species: Macrosaccus neomexicanus Davis and Macrosaccus gliricidius Davis, are also proposed.Descriptions of the adults, pupae, larvae, life histories, and distributions are supplemented with photographs, line drawings, and scanning electron micrographs.The genus is endemic to the New World, with the invasive species Macrosaccus robiniella now widely established in Europe.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012 MRC 105, Washington, D.C. 20013-7012, U.S.A.

ABSTRACT
The new genus Macrosaccus Davis & De Prins is proposed for three species formerly assigned to the genus Phyllonorycter: Macrosaccus robiniella (Clemens), Macrosaccus morrisella (Fitch), and Macrosaccus uhlerella (Fitch); two new, closely related species: Macrosaccus neomexicanus Davis and Macrosaccus gliricidius Davis, are also proposed. Descriptions of the adults, pupae, larvae, life histories, and distributions are supplemented with photographs, line drawings, and scanning electron micrographs. Larvae of all species are serpentine/blotch leaf miners on various genera of the plant family Fabaceae. The genus is endemic to the New World, with the invasive species Macrosaccus robiniella now widely established in Europe.

No MeSH data available.


Related in: MedlinePlus