fastigium


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fastigium

 [fas-tij´e-um] (L.)
1. the highest point in the roof of the fourth ventricle of the brain.
2. the acme, or highest point. adj., adj fastig´ial.

fas·tig·i·um

(fas-tij'ē-ŭm),
1. Apex of the roof of the fourth ventricle of the brain, an angle formed by the anterior and posterior medullary vela extending into the substance of the vermis.
2. The acme or period of full development of a disease.
[L. top, as of a gable; a pointed extremity]

fastigium

(fă-stĭj′ē-əm)
n.
The period of maximum severity or intensity of a disease or fever.

fas·ti·gi·um

(fas-tij'ē-ŭm)
1. [TA] Apex of the roof of the fourth ventricle of the brain, an angle formed by the anterior and posterior medullary vela extending into the substance of the vermis.
2. The acme or period of full development of a disease.
[L. top, as of a gable; a pointed extremity]

fastigium

1. The point of maximal severity of a disease.
2. The peak of a fever.

fas·ti·gi·um

(fas-tij'ē-ŭm)
1. [TA] Apex of roof of fourth ventricle of brain, an angle formed by the anterior and posterior medullary vela extending into substance of vermis.
2. The acme or period of full development of a disease.
[L. top, as of a gable; a pointed extremity]
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References in periodicals archive ?
Fastigium of vertex slightly divided by middle sulcus, tegmina wide and without a pale band in its basal half .....
Description.--Large size, short head, wide round eyes, fastigium verticis as wide as or slightly wider than scapus of antennae, in contact with fastigium frontis, fronto-genal carinae very indistinct.
- Foveolae triangular hardly reaching the fastigium of vertex; mesosternal interspaces hardly wider than long or narrow than long ........................
In the descriptions below the following conventions were adopted for specimen measurements: body length: the distance from apex of fastigium verticis to posterior margin of tenth abdominal tergite; tegmen: the visible distance from base of tegmen to the apex in lateral vew; hind femur: the distance from base of hind femur to the apex of genicular or kneelobe.
Slender, compressed, rather long-legged, pale delphacid with distinctive longitudinal dark brown to black stripes on face and several maculations on thorax and abdomen Head narrower than pronotum (1: 1.4).Vertex in dorsal view short and narrow, a little longer than wide, about 1/3 of its total length projecting beyond the anterior margin of eyes, posterior compartments as long as anterior one, with shallow depressed areas marked on both sides, lateral margin ridged and slightly elevated above eye; submedian carinae arising near anterior margin of the eyes, near to lateral carinae, meeting shortly before the fastigium, delimiting a very shallow, small sub-apical areola continued into a simple nonfurcatedmedian carina; angle of vertex to frons: ca 85-90[degrees].
Diagnosis.--Body with integument slightly or strongly tuberculate and granulated; antenna longer than head and pronotum together; head conical, irons incurved; fastigium of vertex elongate-angular and sloping forwards; frontal ridge weak, strongly constricted below lateral ocelli; eyes convex; ocelli small.
The head is large conical, frons long-ovoid, vertex arched, steeply sloping between compound eyes, fastigium of vertex small, deeply furrowed, lying between dorsal margins of antennal scrobae.
According to Ragge (1962), the genera Drepanophyllum Karsch, 1890, Stenamblyphyllum Karsch, 1896, Debrona Walker, 1870, and Tetraconcha Karsch, 1890 are a fairly well-defined group of African Phaneropterinae, in which the fore tibiae are biconchate and the fastigium of the vertex has a steeply sloping or vertical sulcus.
Fastigium of vertex nearly twice as broad as long; carinula of vertex absent, frontal ridge divergent downwards with moderately deep sulcus.