Trichadenotecnum guttatum, 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 : 702-703

TRICHADENOTECNUM GUTTATUM SP. NOV.

Material examined: Holotype. Male. Mexico: Chiapas, Reserva de la Biosfera El Ocote , 6.xii.1993, G. Ortega & E. Barrera ( UNAM) . Paratypes. Mexico: 1 male, Veracruz, 9.5 mi E Orizaba, Rd. 150, 7.vii.1962, F. Hill, ELM & J. Campbell ( ISU) ; 1 male, Veracruz, Rd. to El Vigía, 4 mi N Santiago Tuxtla, Hwy 180, 3 mi from Hwy. 180, 13.vii.1973, ELM ( ISU) ; 1 male, Veracruz, Rd. to Cerro San Martín from San Andrés Tuxtla , 8 mi from Hwy. 180, 14.vii.1973, ELM ( ISU) .

Etymology: The specific epithet is taken from the Latin guttatus (= drop), indicating the shape of the hypandrial median tongue.

Description: Male. Head. White in ground colour; vertical and orbital markings large, blackish brown; coronal suture black; frontal suture bordered with broad blackish brown band dorsally; frons with two pairs of blackish brown bands, internal pair narrow, external pair broad and not reaching frontal suture; gena blackish brown except eye margin white; eye black, IO/D = 0.7; 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 to form a large marking, ventro-lateral corner white; anteclypeus blackish brown. Antenna brown, scape darker. Mouth parts blackish brown.

Thorax. Prothorax blackish brown. Mesonotum pale brown; anterior surface of scutum blackish brown; anterior margin of lateral lobe and postero-lateral margin of anterior lobe of scutum black, posterolateral margin of lateral lobe and posterior part of anterior lobe white; scutellum brown, anterior margin blackish brown; postnotum brown. Metanotum pale brown, anterior lobe of scutum brown with white longitudinal line medially; scutellum brown, anterior margin blackish brown. Meso- and metapleurites blackish brown, with white longitudinal band medially.

Legs. Brown; fore leg except tarsus and hind tibia paler; all femora with pair of blackish brown spots ventrally; all tibiae with blackish brown band near distal end; middle femur with paler region medially.

Forewing ( Fig. 36B ). Spots in cell a 1 apparent. Opposing spots in cell r large, almost touching each other. Proximal band broad, broadly interrupted just beyond fork of M + Cu, strongly constricted at anterior end in cell cua, including triangular pale spot. Median spots dense, some spots fused with each other, forming larger markings. Distal band apparent, broad in cell r 5. Spot on roof of cell m 3 apparent and broad. Submarginal spots apparent; spot in cell r 1 and m 3 smaller than others. Marginal clouds apparent and dark. Hindwing. Hyaline with faint brown marking in cell cup; veins brown.

Abdomen. Mostly black ventrally, each segment with blackish band dorsally and laterally. Terminalia. Clunial arm long and narrow, sickle-like in shape and forming free process apically. Epiproct ( Fig. 37E, F ) chair-shaped, postero-dorsal margin with strongly projected transversal ridge, its median part with square-shaped thin keel; epiproct lobe long and wide, broader than long, narrowing dorsally, posterior surface slightly swelling. Paraproct: ventro-lateral band short, triangular; distal process long, directed upward. Hypandrium ( Fig. 37G ): left process needlelike, almost straight, directed posteriorly; right process lamellate; median tongue small and short, length/width ª 2, nearly parallel sided and rounded apically, dorsal surface covered by weak denticles. Phallosome ( Fig. 37H ): pseudoparameres long, needle-like. Aedeagus strongly projected dorsally, rectangular, sclerotized region extending to endophallus opening. Phallobase broadest at the middle, anterior margin rounded.

Length. B 2.5–2.6; FW 3.0–3.2; HW 2.3–2.5. 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).