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 sl'its or 



notches in Coccidce. 



Incisure: an impressed line marking the junction of two segments: an in- 

 cision. 



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: = folliculus 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 denned 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 Locust ids; below the serosa. 



Inequal: a surface with irregular elevations and depressions. 

 Inermis: unarmed: without spines or spurs. 



