Trichadenotecnum jambiense

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

Trichadenotecnum jambiense n.sp.

Figs. 72–77

Material examined. HOLOTYPE ♀, Sumatra: West , Jambi , Leter W , 1°12'S 101°10'E, citrus , 1320 m, 19.VI.1997, ESK ( ZMB).

Male unknown.

Female

Colouration (after about 4 years in alcohol). Head ground colour buff. Epicranial suture pale. Confluent brown patches each side of epicranial suture across posterior margin of vertex, and mesial to each orbit. Eyes black. Ocelli pale, black centripetally. Frons with median light brown mark. Antenna pale except scape and pedicel dark brown. Gena with dark brown patch. Epistomal suture light brown. Postclypeus buff with brown striations, darkened ventrally. Dorsal and ventral of anteclypeus brown, basally and distally, otherwise medially pale. Labrum and maxillary palp dark brown; intersegmental regions of maxillary palp pale. Thorax: dorsal lobes of mesothorax buff and of metathorax brown; thoracic pleura buff with brown patches. Fore wing (Fig. 72) with dense pattern of small dark brown markings. Hind wing (Fig. 73) suffused brown. Legs, coxa and second tarsal segment dark brown, otherwise light brown.

Morphology. IO:D 2.5. Fore wing venation as in Fig. 72. Subgenital plate (Fig. 74): short trapezoidal posterior lobe with long setae apically; field of moderately long setae about midline of lobe; main plate with lateral sclerotized areas and median dark sclerotized transverse bar. Gonapophyses (Fig. 75) ventral valve elongate, pointed apically; dorsal valve broad with long acuminate apical spine; outer valve with long setae and short posterior lobe. Spermapore plate heavily ornamented, as in Fig. 76. Epiproct (Fig. 77) with long apical setae. Paraproct (Fig. 77) with field of about 18 trichobothria.

Dimensions. B 2.5; FW 3.4; HW 2.6; F 0.69; T 1.37; t 1 0.1; t 2 0.33; t 1 /t 2 3.3; Ct 19 (t 1) 3 (t 2); f 1 0.8; f 2 0.6; f 1 /f 2 1.33.

Remarks. Trichadenotecnum jambiense has a Loensia -type fore wing pattern. In genitalic features, it resembles T. medium Thornton from Hong Kong, in that the subgenital plate has a short posterior lobe and a transverse sclerotized bar on the main plate. The dorsal valve of the gonapophyses, however, is broader in T. jambiense than in T. medium. Trichadenotecnum jambiense is also similar to T. taenianum Li & Yang from China (placed in Loensia by Li, 1999, 2002) in having a short posterior lobe to the subgenital plate, but the subgenital plate of the latter lacks the transverse median sclerotized bar on the main plate and the ventral gonapophysis valve is shorter than that of T. jambiense. See comment under T. proctum, above.