Systematic position of Trichadenotecnum enderleini (Roesler) (Psocodea: "Psocoptera": Psocidae)

Abstract

Trichadenotecnum enderleini (Roesler, 1943) is the only native species of the genus known from Australia to date. However, its exact systematic position is not firmly fixed mainly due to the lack of information on taxonomically and phylogenetically important morphological characters. In this study, T. enderleini is examined morphologically to clarify further its systematic position. The forewing markings and male terminal structures clearly show that the species lacks all apomorphies of Trichadenotecnum Enderlein, 1909 and is thus only distantly related to the genus. Therefore, T. enderleini is excluded from Trichadenotecnum. Ptycta floresensis Endang, Thornton & New, 2002 from Indonesia is considered to be the closest relative of T. enderleini, and T. enderleini is consequently transferred to the genus Ptycta Enderlein, 1925. As a result, Australia is excluded from the distributional range of Trichadenotecnum, except for T. circularoides Badonnel, 1955 considered to be introduced

Redefinition of Ptycta Enderlein (Psocodea: “Psocoptera”: Psocidae) and taxonomic revision of the Japanese species

“…Although the boundary between Copostigma and Ptycta remains unclear, the two genera are strongly united by the morphology of the male terminalia. The basal paraproct lobe described by Thornton (1984), Smithers (1985) and Yoshizawa and Smithers (2006) is a prominent synapomorphy of the two genera (e.g. Fig.…”

“…Moreover, the paraproctal basal process of Trichadenotecnum extends from the ventral margin of the anterior region of the paraproct, whereas the basal paraproct lobe of Copostigma–Ptycta is usually apart from the ventral margin of the paraproct (Fig. 6; see also Yoshizawa & Smithers 2006). A similar paraproct lobe is also observed in some species of Hyalopsocus (K. Yoshizawa, pers.…”

Molecular phylogeny reveals genital convergences and reversals in the barklouse genus Trichadenotecnum (Insecta: Psocodea: ‘Psocoptera’: Psocidae)

“…62 The species of Trichadenotecnum are superficially very similar to 63 each other; without examining the genital characters, species iden-64 tification is difficult even between rather distantly related species. 65 Nevertheless, the species of Trichadenotecnum and even the genus 66 itself were once diagnosed only by superficial similarities in forew-67 ing markings and venation, which caused much taxonomic confu-68 sion (e.g., Roesler, 1943Roesler, , 1944Thornton, 1961;New, 1978;69 Yoshizawa, 1998;Yoshizawa and Smithers, 2006). Recently, the 70 genus was redefined by a combination of apomorphies including 71 male and female genital characters (Yoshizawa, 2001(Yoshizawa, , 2003.…”

“…The 55 genus consists of more than 200 species distributed in all zoogeo-56 graphical regions (summarized in 57 Lienhard, 2011Lienhard, , 2015Yoshizawa and Lienhard, 2015) except for 58 the Australian Region, where only one introduced species is known 59 (Yoshizawa and Smithers, 2006). Several additional species have 60 been distinguished but are not yet described; some of them are 61 included in the present analyses (see Table 1).…”

Psocids from Malta (Insecta: Psocodea: ‘Psocoptera’), with new synonymy for Peripsocus stagnivagus based on the discovery of its first Palaearctic male

“…The high potential for dispersal of this species is probably largely due to its predominantly parthenogenetic reproduction. Another example of an extremely widespread parthenogenetic psocid is Trichadenotecnum cicularoides Badonnel (thelytoky demonstrated by Mockford 1974), which has been recorded from all zoogeographical regions (see Smithers 2002 andSmithers 2006).…”