Trichadenotecnum waykambasense

Sri Kentjonowati Endang, 2005, The Genus Trichadenotecnum (Insecta: Psocoptera: Psocidae) in Sumatra, Indonesia, With Description of Thirteen New Species, Records of the Australian Museum 57, pp. 15-38 : 34-35

Trichadenotecnum waykambasense n.sp.

Figs. 78–83

Material examined. HOLOTYPE ♀, Sumatra: SE, Way Kambas National Park , Way Kanan , 5°04'S 105°42'E, mixed secondary forest , 20 m, 30.VI.1997, ESK ( ZMB). PARATYPE ♀, same data as holotype ( AMS K196203) .

Male unknown.

Female

Colouration (c. 4 years in alcohol). Head ground colour buff. Epicranial suture dark brown; confluent brown patches each side extending to posterior margin of vertex, and mesial to each orbit. Eyes black. Ocelli pale, black centripetally. A narrow dark brown stripe from median ocellus toward each antennal socket. Antennal socket bordered with dark brown band. Antenna dark brown, pale between joints. Gena with brown markings. Frons with median brown V-shaped mark and dark brown stripe laterally. Postclypeus buff with dark brown striations darkened distally. Anteclypeus dark brown on basal quarter, otherwise pale. Labrum and maxillary palp dark brown. Thorax dark brown, buff along sutures. Fore wing with dense dark brown markings as in Fig. 78. Legs dark brown, pale between joints.

Morphology. IO:D 3. Wing venation as in Fig. 78. Subgenital plate (Fig. 79) posterior lobe long, somewhat rounded apically, with long setae along apical margin; two long setae near base of the lobe; anterior to these a narrow sclerotized bar connecting the lateral sclerotized areas on disc. Gonapophyses (Fig. 80) ventral valve long, with acuminate apical spine; dorsal valve with long pointed apex; outer valve with short posterior lobe. Epiproct (Fig. 81). Paraproct (Fig. 82) with field of about 18 trichobothria. Spermapore plate sclerotized (Fig. 83).

Dimensions. B 1.56; FW 1.9; HW 1.62; F 0.34; T 0.62; t 1 0.2; t 2 0.09; t 1 /t 2 2.22; Ct 16 (t 1) 2 (t 2); f 1 0.3; f 2 0.25; f 1 /f 2 1.2.

Remarks. Trichadenotecnum waykambasense has wing markings of the Loensia pattern. This species resembles T. gombakense New and T. soekarmanni Endang et al. in having a long parallel-sided apical lobe to the subgenital plate. However the ventral gonapophysis valve of T. waykambasense is distinctly longer than those of T. gombakense and T. soekarmanni; furthermore, the anterior sclerotized region of the subgenital plates of T. gombakense and T. soekarmanni lack the bow-like transverse sclerotized bar. Trichadenotecnum soekarmanni was attributed to Yoshizawa’s (2001) spiniserrulum group (Endang et al., 2002), but the long ventral gonapophysis valve of T. waykambasense suggests that the two species may be related only more distantly.