Trichadenotecnum quaesitum, (CHAPMAN)

Yoshizawa, Kazunori, Aldrete, Alfonso Neri García & Mockford, Edward L., 2008, Systematics and biogeography of the New World species of Trichadenotecnum Enderlein (Insecta: Psocodea: ‘ Psocoptera’: Psocidae), Zoological Journal of the Linnean Society 153 (4), pp. 651-723 : 682

TRICHADENOTECNUM QUAESITUM (CHAPMAN)

Psocus quaesitus Chapman, 1930: 270 (male; not female of Psocus quaesitum Chapman, 1930: 270 ).

Trichadenotecnum slossonae (Banks) : Sommerman, 1948: 273 (female).

Trichadenotecnum quaesitum (Chapman) : Mockford, 1993: 286.

Material examined: CANADA: 1 male, Quebec, Rd. 18 nr Mascouche, N. Montreal, 21.viii.1956, ELM ( ISU) ; 1 male, USA: Indiana, Dunes State Park , 6.ix.1952, ELM ( ISU) ; 1 male, Missouri, Big Spring State Park , Carter Co., 21.vi.1959, ELM ( ISU) ; 1 male, 1 female, South Carolina, Berkeley Co., Bonneau, 3.x.1973, ELM ( ISU) .

Diagnosis: Although considerable variations in body size and some genital characters are recognized, this species can be characterized by the combination of the following character states: forewing not extensively covered with small spots ( Fig. 17C ); basal lobe of clunial arm weakly sclerotized ( Fig. 21A ); epiproct lobe nearly parallel sided ( Fig. 21B ); apex of hypandrial right arm exceeding outer margin of left process; hypandrial median tongue relatively broad, asymmetrical, slightly left skewed ( Fig. 21C ); pseudoparameres widely separated, aedeagal area wider than basal width of pseudoparamere ( Fig. 21D ). In contrast, the following intraspecific variations were observed: difference in body size, male forewing length 2.6–3.8 mm; some minute differences in hypandrium and phallosome. However, these variations are continuous and intraspecific. It is also possible that these morphological variations indicate genetic isolation between different populations, and further morphological and molecular analyses are required to clarify it. See Mockford (1993) for further description of the species.

Figures

Figure 17. Forewings of Trichadenotecnum erwini (A), T. chiapense (B), T. quaesitum (C), T. quaesitellum (D), T. cerrosillae (E), T. maculatum (F), T. neoleonense (G), T. ericium (H), T. brevicornum (I), T. concinnum (J), T. acutum (K) and T. nicaraguense (L.).

Figure 21. Male terminalia structures of Trichadenotecnum quaesitum, showing terminalia in lateral view (A), epiproct in posterior view (B), hypandrium in ventral view (C) and phallosome in ventral view (D).