USED IN EXTOMOLOGY. 145 



U 

 Uliginous: muddy, or pertaining to mud. 

 Ulnar: in Homoptera, a wing vein between the radial vein and claval suture; 



= cubitus : in Orthoptera, = cubitus ; q. v. 

 Ulnar area: in Orthoptera, = median area; q. v. 

 Ulona: the thick, fleshy mouth parts of Orthoptera. 

 Ulonata: a Fabriciar. term for Orthoptera, based on the character of the 



mouth structures. 

 Ultimate: last or final: that larval stage just before pupation. 

 Ultramarine: an intense deep blue [cobalt blue]. 

 Ultra-nodal sector: in Odonata, runs parallel with and between media 1 and 



2, or principal and nodal sectors : = postnodal sector. 

 Umbilicate: navel-shaped, or resembling a navel. 

 Umbilicus: a navel, or navel-like depression. 

 Umbonate: bossed; with an elevated knob in the centre. 

 Umbone: an embossed, elevated knob situated on humeral angle of elytra. 

 Umbones: two movable spines on the sides of prothorax in some Coleoptera. 

 Umbrosa: shaded or clouded: a cloud or shade. 

 Unarmed: without spurs, spines or armature of any kind. 

 Unarticulate: not jointed nor segmented. 



Unci: thick, hooked processes, forming the borders of the anal opening. 

 Uncinnate: hooked at the end. 

 Uncus: in Lepidoptera, Diptera, and elsewhere, the curved hook directed 



downward from a triangular dorsal plate in the <$ and shielding the penis : 



the genital hamule. 

 Undate: wavy or waved. 



Undulated: obtusely waved in segments of circles. 

 Unequal: unlike in size, form, development or other characters. 

 Ungues: the tarsal claws. 



Unguiculate: armed with a hook, nail or claw. 

 Unguiculus: a small terminal claw or nail-like process. 

 Unguis: one of the claws at the end of the tarsus: also applied to a short 



process on the 6th antennal joint in some Aphids. 

 Ungula: a hoof, claw or talon. 

 Ungulate: shaped like a hoof. 

 Uni-: one, a comDining form. 

 Unicolorous: of one color throughout. 

 Unidentate: with one tooth only. 

 Uniplicate: with a single fold or line of folding. 

 Unique: one only: unlike any other. 

 Unisexual: of one sex only: applied to Aphids and Cynipids where only 



parthenogenic females are known. 

 Upper austral zone: is divided into an eastern humid or Carolinian area, and 



a western arid or upper Sonoran area, which pass insensibly into each other 



near the 100th meridian: see Carolinian and upper Sonoran. 

 Upper field: in tegmina, = anal field ; q. v. 

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