14 EXPLANATION OF TERMS 



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 Atomarius: with minute dots or points. 



Atrachelia: Coleoptera in which there is no visible constriction between head 



and prothorax ; Rhynchophora and some Heteromera. 

 Atrium: a chamber just within the spiracle and before the occluding structure 



to the trachea. 

 Atrocoeruleus: very deep, blackish, sky-blue. 

 Atrophied: wasted away: unfit for use. 

 Atropurpureus: dark purplish, nearly black [an admixture of mauve and 



black]. 

 Atrous: jet black. 

 Atrovelutinus: velvety black. 



Atrovirens: dark green, approaching blackish [prussian green]. 

 Attenuated: drawn out; slender; tapering. 

 Attingent: touching. 



Atus: suffix ; denotes possession of a quality or structure. 

 Atypic -ical: off type; not of the usual form. 

 Auchenorhynchus: with the beak issuing from the inferior portion of head, 



as in Homoptcra. 

 Auditory: relating to the sense of hearing. 



Auditory organs: Orthoptera; specialized structures covered by a tense" mem- 

 brane, on the anterior tibia or base of abdomen ; any structure that, functions 



as an ear. 

 Aurantiacus: orange colored; a mixture of yellow and red [chrome orange]. 

 Aurate: with ears or ear-like expansions: also = auratus. 

 Auratus: golden yellow [pale cadmium yellow]. 

 Aurelia: = chrysalis or pupa; specifically of butterflies. 

 Aurelian: a lepidopterist. 

 Aureolate: with a diffuse colored ring. 



Aureole: a ring of color which is usually diffuse outwardly. 

 Aureous-eus: gold-colored. 

 Aurichalceous: brassy yellow. 

 Auricle -cula: an appendage resembling a little ear; in Odonata the tumescent 



area at the sides of the second abdominal segment: in Andrenidm, a short 



membranous process placed laterally on the ligula. 

 Auricular: applied to the space or cavity surrounding the dorsal vessel. 

 Auriculate: with an ear-like appendage or, in antenna;, with the basal joint 



distended into a concave, plate-like ear which envelops the rest of the 



structures. 

 Auriculo-ventricular: the outer valves of the heart between the auricular 



space and the chamber. 

 Auriculo-ventricular openings: are the lateral openings into the heart by 



means of which the blood is admitted into it. 

 Auritus: with two ear-like spots or appendages. 

 Auroral spot: applied to the bright orange colored spot at the apical area of 



. Inthocharis. 

 Auroreous -eus: red, like- the aurora borealis [crimson lake]. 

 Austral: is that fauna! region which covers the whole of the United States 



