urogomphus

urogomphus

[‚yu̇r·ə′gäm·fəs]
(invertebrate zoology)
In certain insect larvae, a process on the terminal segment. Also known as pseudocercus.
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Urogomphus, two segmented; proximal segment, 1.34-1.59 mm ([bar.x] = 1.44 [+ or -] 0.08 mm, n = 7) with numerous primary (ancestral) and secondary sensilla similar to that shown for N.
Urogomphus One-segmented, length 0.48- 0.60 mm ([bar.x] = 0.55 [+ or -] 0.05 mm).
Length of last abdominal segment more than 0.65 times head width; length of urogomphus more than 3.20 times head width; length of first urogomphomere less than 1.20 times length of second Anodocheilus Babington Length of last abdominal segment less than 0.60 times head width; length of urogomphus less than 2.80 times head width; length of first urogomphomere more than 1.30 times length of second Liodessus Guignot
calidus have relatively few additional primary sensilla that are restricted to femoral anteroventral surfaces and the apex of each urogomphus. Alarie et al.
Urogomphus.-Single segmented, length 1.46-1.71 mm (= 1.54 [+ or -] 0.08 mm) with 4 hair-like distal sensilla, 3 long hair-like prominent sensilla on the shaft, and one small spine near the base.
Urogomphus. -- Single segmented, length 0.81-0.90 mm ([bar.x] = 0.85 mm, n = 4) with 4 apical sensilla, 3 long hair-like prominent sensilla arising from the proximal third and one shorter sub distal spine-like sensillum near origin of urogomphus.
Urogomphus. -- Two segmented; proximal segment length 0.92-1.11 mm ([bar.x] = 1.01 [+ or -] 0.06 mm, n = 7) with 11 sensilla, including one small spine near origin and three long hair-like prominent sensilla arising distally; segment 2 subequal to proximal segment and hair-like with a hair-like sensillum arising distally.
(12.) Wolfe GW and Roughley RE: Description of the pupa and mature larvae of Matus ovatus ovatus us Leech (Coleoptera: Dytiscidae) with a chaetotaxal analysis emphasizing mouth parts, legs, and urogomphus. Proc Acad Nat Sci Phil.
1); posterior margins of tergites reddish-brown; proximal urogomphus with pronounced reddish-brown basal band, narrow less intensely pigmented band distally on some specimens.
Each urogomphus bore a small sensillum proximally and numerous, long, hair-like sensilla, arising laterally to produce a plumose appearance.