Parameres

Parameres

 

(1) Corresponding left-hand and right-hand organs or their parts in bilaterally symmetrical animals. One para-mere is always a mirror image of the other.

(2) Paired appendages of the copulatory apparatus of the males of certain insects.

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Male terminalia: Hypoproct slightly bilobed, wider than cercus, with pair of posterior setae; aedeagus longer than hypoproct and parameres; parameres apically with 2 to 3 short setae; gonocoxite cylindrical; gonostylus attenuate, widest at base, tapering to narrow apex, setulose basally, carinate beyond; apical tooth present.
Male genitalia: Pygofer with a digit-like process between anal tube and subgenital plates (Figure 14); subgenital plates long with a slender apex, basal portion of dorsal margin rounded (Figure 15); parameres with one subapical spines, quadrangular and truncated, directed downward, dorsal margin rounded (Figure 16); aedeagus long as slender with a pair of flattened hook-like dorsal process inserted on the median portion of the shaft (Figures 17-18).
In Luzarinae, male phallic claspers (pseudepiphallic parameres) used to hold the female copulatory papilla and keep the female attached during copulation are relatively common (de Mello 2007, Souza-Dias and Desutter-Grandcolas 2014, Souza-Dias et al.
nivalis (Fleutiaux & Germain) in size, differing in having the integument pale yellow, including the head; reduced elytral maculae; dorsal sculpture finer in diameter and depth, with the pronotal and elytral punctures larger and the interpunctural spaces wider, 1.0-1.3 time their own diameter; the frontal margin finely carinate and lacking a narrow submarginal impression; and the aedeagal parameres shouldered and attenuate, with a long apical seta each (Fig.
The abbreviations used in measurement are AL for abdominal length, HL for head length, GL for genital length, GW for genitalia width at parameres articulation, PAW for preantennal width, PL for pronotal length, PtL for pteronotal length, PtW for pteronotal width, PW for pronotal width, TL for total length and TW for temporal width.
Parameres somewhat shorter than median lobe, moderately thick, slightly compressed at base along rounded tips and provided with short hairs on dorsal side and apex (Fig.
Aedeagus: parameres reduced with large and rounded apical margin, basal piece with a deep V-shaped notched in the medial region (ventral view).
La genitalia masculina presenta el lobulo medio mucho mas largo que los parameres y finaliza con una papila mamiliforme.
4'.--Pterostigma uniformly whitish; parameres pointed apically (Fig.
Aedeagus asymmetrical through 90[degrees] inversion of distiphallus; with two parameres, and these carrying a rugose morphoventral projection (Fig.
Phallosome simple, open anteriorly, with aedeagal arch pointed and external parameres slender, incurved, bearing pores distally; lacking endophallic sclerites, but with a radula slit in the middle (Figs.
morenoi male has a pronotal quadrilobate prominence with lobes linked by thick carinae; the prominence is flanked by broad concavities (In Panama, there has been dimorphism between males with respect to prominence pronotal); the declivitous surface of the pronotum beneath the carina is smooth, without sculpturing (Figure 2b); and the parameres have a wide subapical tooth (EDMONDS & ZIDEK, 2010) (Fig.