Systematics and biogeography of the New World species of Trichadenotecnum Enderlein (Insecta: Psocodea: ‘ Psocoptera’: Psocidae) Author Yoshizawa, Kazunori Author Aldrete, Alfonso Neri García Author Mockford, Edward L. text Zoological Journal of the Linnean Society 2008 2008-08-31 153 4 651 723 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00398.x journal article 10.1111/j.1096-3642.2008.00398.x 0024-4082 5446195 THE ACONCINNUM GROUP Diagnosis: Forewing not extensively covered with small spots ( Fig. 36A, B ), marginal clouds apparent and dark; Rs fork obtuse; 3rd section of CuA arched. Male terminalia . Eighth venter ( Fig. 37C, G ) with large transverse sclerite medially fused with hypandrium. Epiproct ( Fig. 37A, B, E, F ) chair-shaped, postero-dorsal margin with projection at middle, epiproct lobe protruded over clunium. Hypandrium ( Fig. 37C, G ) asymmetrical, left process well developed , right process lamellate . Phallosome ( Fig. 37D, H ) asymmetrical , pseudoparameres usually needlelike, left one projected posteriorly and right one projected postero-internally ; aedeagus broadly sclerotized Figure 36. Forewings of Trichadenotecnum aconcinnum (A), T. guttatum (B), T. slossonae (C), T. barrerai (D), T. denticulatum (E), T. miffy (F), T. decui (G), T. obrienorum (H) and T. cintalapense (I). Figure 37. Male terminalia structures of Trichadenotecnum aconcinnum (A–D) and T. guttatum (E–H), showing terminalia in lateral view (A), epiproct in posterior view (B, E), epiproct in lateral view (F), hypandrium in ventral view (C, G) and phallosome in ventral view (D, H). Key to species of the aconcinnum group 1. Median tongue relatively long, about 2.5 times longer than wide ( Fig. 37C ) ............... T. aconcinnum sp. nov. – Median tongue relatively short, about 2 times longer than wide ( Fig. 37G )..................... T. guttatum sp. nov. and strongly projected posteriorly. Females of this group are so far unknown.