Trichadenotecnum peruense, 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 : 656-657

TRICHADENOTECNUM PERUENSE SP. NOV.

Material examined: Holotype. Male. Peru: Madre de Dios. Río Tambopata Reserved Zone , 30 km SW Puerto Maldonado, 290 m, 6.ix.1984, T. L. Erwin et al. ( SI).

Etymology: The specific epithet is taken from the type locality of this species.

Description: Male. Head. Mostly brown; narrow white band between vertical and orbital markings; coronal suture black; frontal suture bordered with brown band; frons with two pairs of white spots, median pair smaller and located dorsally, lateral pair large, extending from dorsal margin of postclypeus to frontal suture; gena white; eye black, small, interocular space/eye-diameter ratio (IO/D) = 1.6; ocelli white, ocellar field black; antennal socket bordered with brown band; postclypeus white with T-shaped blackish brown marking on ventral half, dorsal region with c. six rows of pale brown spots; anteclypeus pale brown. Antenna pale brown. Mouth parts pale brown; 4th segment of maxillary palpus dark brown.

Thorax. Prothorax brown. Mesonotum brown, with white spot posterior to anterior lobe of scutum, lateral lobe of scutum with transversal narrow white line; scutellum blackish brown; postnotum pale brown. Metanotum brown, with white spot at posterior end of anterior lobe of scutum; scutellum blackish brown; postnotum brown. Meso- and metapleurites brown except membranous region white.

Legs. Coxae brown; middle leg pale brown, tibia darker; fore and hind legs missing.

Forewing ( Fig. 1C ). Spots in cell a 1 not separated. Opposing spots in cell r absent, but similar markings, not homologous, in posterior region of cell r just proximal to proximal band. Proximal band reduced, interrupted beyond CuP and almost absent between M-CuA fork and basal section of Rs. Median spots almost absent except for some faint markings along discoidal veins. Distal band almost indistinct except for brown spot in cell r 3. Spot on roof of cell m 3 small, only distinct below distal Ms-CuA fork. Submarginal spots reduced, spots in cell r 1 and m 3 hardly visible. Marginal clouds almost indistinct except for brown spots on distal ends of vein R 2+3, R 4+5 and M 1. Hindwing. Hyaline; veins brown.

Abdomen. White, with sparse minute brown spots. Terminalia. Epiproct lobe ( Fig. 2E, F ) expanded antero-dorsally, smoothly rounded, medially with longitudinal swelling. Paraproct ( Fig. 2E ): ventro-lateral band absent; distal process short, directed posteriorly. Hypandrium ( Fig. 2G ) with wide membranous region on left side; left process well projected, arched inwardly, cylindrical; right side of hypandrium with lobe-like projection (= right process), lobe with broad membranous region near right edge, external edge of lobe covered by denticles. Phallosome ( Fig. 2H ) nearly symmetrical, only slightly left-skewed posteriorly, posterior margin wide, with papillae, postero-lateral corner with projection. Phallobase narrowing apically, with pair of projections directed anteriorly.

Key to species of the roesteri group

1. Males..............................................................................................................................................2

– Females...........................................................................................................................................6

2. Hypandrial median tongue long, length> apical width ( Fig. 3C, G )............................................................3

– Hypandrial median tongue short, length ª apical width ( Fig. 3I )........................................... T. bos sp. nov.

3. Phallosome without long processes ( Fig. 3D, H ) ...................................................................................... 4

– Phallosome with long processes arising from postero-lateral corners ( Fig. 3J ) ........................ T. sinuatum New

4. Phallosome narrowing posteriorly, with pair of short processes postero-medially ( Fig. 3D ) .............................. 5

– Phallosome broadened posteriorly, without pair of processes postero-medially ( Fig. 3H )... T. oaxacense sp. nov.

5. Hypandrial median tongue almost parallel sided................................................................. T. roesleri New

– Hypandrial median tongue strongly constricted medially ( Fig. 3C ) ......................... T. tambopatense sp. nov.

6. Body of subgenital plate broad and transverse, anterior margin with shallow and broad invagination of membranous region ..................................................................................................................................... 7

– Body of subgenital plate sinuate ................................................................................... T. sinuatum New

7. Anterior margin of body of subgenital plate with narrow notch medially ................ T. tambopatense sp. nov.

– Anterior margin of body of subgenital plate without narrow notch medially............................. T. roesleri New

Length. Body (B) 1.9; forewing (FW) 2.0; hindwing (HW) 1.5.

Female. Unknown.

Distribution: Peru.

Figures

Figure 1. Forewings of Trichadenotecnum circularoides (A), T. gonzalezi (B), T. peruense (C), T. tambopatense (D), T. oaxacense (E) and T. bos (F).

Figure 2. Male terminalia structures of Trichadenotecnum gonzalezi (A–D) and T. peruense (E–H), showing terminalia in lateral view (A, E), epiproct in posterior view (B, F), hypandrium in ventral view (C, G) and phallosome in ventral view (D, H).

Figure 3. Male terminalia structures of Trichadenotecnum tambopatense (A–D), T. oaxacense (E–H) and T. bos (I, J), showing terminalia in lateral view (A, E), epiproct in posterior view (B, F), hypandrium in ventral view (C, G, I) and phallosome in ventral view (D, H, J).