Trichadenotecnum aconcinnum, Yoshizawa & Aldrete & Mockford, 2008

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 : 702

TRICHADENOTECNUM ACONCINNUM SP. NOV.

Material examined: Holotype. Male , Mexico: Chiapas, 7 km N El Bosque, 10 km S Simojovel, 1050 m, 13.viii.1975, ANGA & B. García González ( UNAM).

Etymology: The specific epithet is taken from the Latin a (= not) + concinnus (= symmetry), in reference to the asymmetrical hypandrium of this species.

Description: Male. Head. White in ground colour; vertical and orbital markings large, blackish brown; coronal suture black; frontal suture bordered with blackish brown band dorsally; frons with two pairs of pale brown bands; gena blackish brown; eye black, IO/D = 1.1; ocelli white, ocellar field black; antennal socket bordered with blackish brown band; postclypeus with eight rows of blackish brown spots, fused with each other ventrally, forming large marking, lateral margin of postclypeus blackish brown; anteclypeus blackish brown. Antenna pale brown, scape and pedicel darker. Mouth parts blackish brown.

Thorax. Prothorax blackish brown. Mesonotum brown; anterior surface of scutum blackish brown; anterior margin of lateral lobe of scutum black; posterior part of median lobe white; lateral lobe with paler oval part medially; anterior margin of scutellum blackish brown; postnotum brown. Metanotum brown, with pale oval part on posterior region of each lateral lobe of scutum; medial lobe with white spot medially; anterior margin of scutellum blackish brown. Meso- and metapleurites blackish brown except membranous region white and mesopleuron with longitudinal pale brown band.

Legs. Blackish brown; tibiae paler; fore and middle femora with pale brown portions medially.

Forewing ( Fig. 36A ). Spots in cell a 1 apparent. Opposing spots in cell r large, almost fused with each other. Proximal band broad in cell CuP but narrower in cell CuA, broadly interrupted just beyond fork of M + Cu, cell CuA including pale spot. Median spots dense, some spots fused with each other, forming larger markings. Distal band faint, broad in cell r 5, fragment of band in cell r 3 small. Spot on roof of cell m 3 small, darker than marginal cloud. Submarginal spots apparent; spots in cell r 1 and r 3 smaller than others. Marginal clouds apparent and dark. Hindwing. Hyaline with faint brown markings in cell CuP; veins brown.

Abdomen. White. Terminalia. Clunial arm ( Fig. 37A ) long and narrow, sickle-like in shape and forming free process apically. Epiproct ( Fig. 37A, B ) chair-shaped, postero-dorsal margin with strongly projected transversal ridge; epiproct lobe small, much broader than long, narrowing dorsally, posterior surface with well-developed swelling. Paraproct ( Fig. 37A ): ventro-lateral band short, triangular; distal process long, directed upward. Hypandrium ( Fig. 37C ): left process needle-like, almost straight, directed postero-internally; right process lamellate; median tongue small but long, length/width ª 2.5, gradually narrowing to rounded apex, dorsal surface covered by weak denticles. Phallosome ( Fig. 37D ): pseudoparameres long, needle-like. Aedeagus strongly projected dorsally, triangular, sclerotized region extending to endophallus opening. Phallobase broadest in the middle, anterior margin rounded.

Length. B 2.5; FW 3.2; HW 2.4.

Female. Unknown.

Distribution: Mexico.

Figures

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).