Neochlamisus (Karren, 1972)
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publication ID |
https://doi.org/ 10.1111/j.1096-3642.2007.00343.x |
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persistent identifier |
https://treatment.plazi.org/id/862A87D5-FFB2-FFFB-008A-F969FD592A63 |
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treatment provided by |
Felipe |
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scientific name |
Neochlamisus |
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DESCRIPTIONS OF NEOCHLAMISUS View in CoL CASES
Neochlamisus bebbianae ( Brown, 1943) I:
Salix bebbiana host form ( Figs 3–5 View Figure 3 View Figure 4 View Figure 5 )
Egg case ( Fig. 3 View Figure 3 ): Size (N = 8): length (L), 1.87– 2.68 mm, width (W) at roof, 0.95–1.05 mm. Colour: dark brown with longitudinal ridges lighter brown. Shape: bell-like, symmetrical in lateral aspect. Apex: conical, transverse in lateral aspect; flange uneven. Egg stalk: present ( Fig. 3B View Figure 3 ), coiled and narrowed, colour translucent white. Roof: slightly convex in lateral view; texture coarse. External surface: texture of walls coarse; faeces arranged as overlapping plates ( Fig. 3C View Figure 3 ). Plates: quadriform, slightly domed medially, with basal edges exposed; longitudinal ridges present, arising from multiple plates of variable lengths, with heights also variable but generally short. Trichomes: present, simple, incorporated deeply into plate matrix; decumbent, some slightly protuberant at surface ( Fig. 3C View Figure 3 ). Internal surface: texture rough, but smoother than external surface, lacking apparent plates and ridges; slight space between case wall and egg.
Larva-I case ( Figs 3A View Figure 3 , 4A View Figure 4 ): Size (N = 9): L, 1.98– 2.12 mm; W at base opening, 0.91–1.09 mm. Colour: unevenly dark-brown–black. Egg case: mostly intact, distinguishable from new larval section by width, colour, wall thickness texture, trichome placement, and patterning of faecal deposit; egg stalk present or absent. Walls of larval section: slightly wider and thicker than those of egg case. Larval faeces granular: deposited in rows, not in plates. Ventral wall: with suture continuous, extending subapically from egg case through larval section to opening; faecal rows few in number, positioned obliquely; dark triangular wedge spanning ventral suture. Lateral and dorsal walls: with transverse faecal rows. Base opening: slightly oblique in lateral view; basal margin simple. External surface of larval section with trichomes unevenly distributed, protruding as dense fur-like patches in some sections. Internal surface: smooth, lacking apparent plates and ridges.
Larva-II case ( Figs 3 View Figure 3 , 4 View Figure 4 ): Size (N = 8): L, 2.41– 3.48 mm; W at base opening, 1.32–1.58 mm. Shape: tubular, slightly asymmetrical in lateral aspect with dorsal wall longer than ventral wall. Apex: rounded; egg stalk absent. Egg case: generally intact, except for ventral suture; position, shape, colour and other characteristics as above. Larval case additions during phases I and II: not distinguishable; similar in colour and surface texture characteristics. Ventral suture: extended from apex through egg case to base opening. Trichomes present, as in case of instar I. Internal surface: smooth.
Larva-III case ( Fig. 3 View Figure 3 ): Size (N = 10): L, 3.66– 3.91 mm; W at base opening, 1.82–1.91 mm. Colour of larval sections I, II, and III: generally dark, unevenly striate. Shape: tubular; egg case apparent, position inclined ventrad. Trichomes of sections I, II, and III of medium density.
Larva-IV younger case ( Figs 3 View Figure 3 , 4E–G View Figure 4 , 5 View Figure 5 ): Size (N = 9): L, 4.06–6.07 mm; W at base opening, 3.53–3.95 mm. Colour: medium to dark brown, striated appearance, sections deposited by each larval instar not distinguishable. Shape: tubular; apex elongate and conelike; shape asymmetrical in lateral aspect, ventral wall shorter than dorsal wall and egg case inclined ventrad. External surface texture: coarse, with fine rows of faecal deposits and dense trichomes ( Fig. 4D–F View Figure 4 ). Ventral wall: with large triangular insertion around ventral suture, flattened in lateral view; wall thickened, slightly protuberant from adjacent wall; suture not particularly protuberant; faecal deposit at suture lighter brown than in wall. Lateral wall: expanded to twice original width as a result of faecal insertion into ventral wall. Dorsal wall: with evenly tapered lateral margins, rounded at apex; surface generally rounded in lateral view, with transverse, even faecal rows. Base opening: oblique, margin simple. Internal surface texture ( Fig. 4G View Figure 4 ): smooth, trichomes not apparent. Larva densely covered in trichomes, evenly distributed.
Larva-IV older case ( Fig. 5 View Figure 5 ): Size (N = 2): L, 4.60– 7.04 mm; W at base opening, 3.59–4.00 mm. Case slightly longer than younger instar-IV case, but two times wider, greatly expanded below egg and instar-I sections. Shape: barrel-like; egg case reduced to a small apical nipple. Trichomes: increasingly dense with age in instar-IV section, eventually with furry appearance; dense trichomes span dorsal and lateral walls, but not ventral wall.
Pupal case ( Fig. 3A View Figure 3 ): Size (N = 8): L, 6.07–6.54 mm; W at base opening, 3.53–3.95 mm. Colour: medium to dark brown, striated; seal, lighter brown. Shape: barrel-like; base opening obliquely angled, sealed by flattened circular disc. External surface and basal seal surface: rough, trichomes sparse. Ventral wall: flattened in lateral view, striated longitudinally. Lateral walls: symmetrical, evenly widened below apex and slightly narrowed at basal margins. Dorsal wall: striated transversely. Internal surface: smooth.
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