66 EXPLANATION OF TERMS 



those embryonic cells around and from which the organs and appendages 



of the future imago develop. 

 Imago: the adult or sexually developed insect. 

 Imbricate: arranged or appearing like the scales on a fish or the shingles on 



a roof. 

 Immaculate: destitute of spots or marks. 

 Immarginate: without an elevated rim or margin. 

 Immersed -us: inserted, imbedded or hidden in. 

 Imponderable: that which cannot be weighed. 

 Impregnate -ed: to make or made fertile or pregnant: fertilized. 

 Impressed -us: a surface with shallow depressed areas or markings. 

 Impubis: without hair. 

 Inaequalis: unequal. 



Inarticulate: not jointed or segmented. 

 Inaurate -us: golden yellow [pale cadmium yellow]. 

 Incanus: hoary. 

 Inch: the English and American standard of length in insect measurement: 



it is = 12 lines and, roughly, to 25 mm.; usually expressed in units and 



hundredths, as 1.01. 

 Incised: notched or deeply cut into. 

 Incision: any cut into a margin or through a surface: the marginal slits or 



notches in Coccidw. 

 Incisure: an impressed line marking the junction of two segments: an incision. 

 Inclinate -us: leaning or inclining. 



Inclusus : when one part is wholly or partially hidden in another. 

 Inconspicuous: not attracting attention or quickly noticeable. 

 Incrassated: thickened: rather suddenly swollen at some one point, especially 



near tip. 

 Incubate: to brood: to cause to develop; as an egg. 

 Incumbent: lying one over another: wings when they cover the dorsum 



horizontally. 

 Incunabulum: = f olliculus and cocoon; q. v. 

 Incurved -ate: bowed or curved inwards. 

 Independent: in Lepidoptera; that vein of. the wings that arises from the 



cross-vein closing the cell, and does not branch directly from any vein 



reaching the base : it is v. 5 of the numerical series in both wings and the 



media of Comstock. 

 Indeterminate: not defined nor well marked; obscure: of no constant form or 



shape. 

 Indigote: a very deep indigo blue. 

 Indirect: applied to metamorphosis = complete. 

 Indumentum: a covering of hairs, scales or tufts. 

 Indurated: hardened. 

 Indusium: the case made by an insect larva: a membranous layer of the 



embryo of Locustidce below the serosa. 

 Inequal: a surface with irregular elevations and depressions. 

 Inermis: unarmed: without spines or spurs. 



