Ptycta enderleini (Roesler) Yoshizawa & Smithers, 2006

Yoshizawa, Kazunori & Smithers, C. N., 2006, Systematic Position of Trichadenotecnum enderleini (Roesler) (Psocodea: “ Psocoptera ”: Psocidae), Records of the Australian Museum 58 (3), pp. 411-415 : 412-414

Ptycta enderleini (Roesler) n.comb.

Figs 1–3

Psocus conspurcatus Enderlein, 1903: 224 (type locality: Royal Botanical Gardens Sydney , NSW, Australia).— Junior homonym of Psocus conspurcatus Rambur, 1842 .

Trichadenotecnum conspurcatum (Enderlein) .— Enderlein, 1925: 105.

Psocus enderleini Roesler, 1943: 13 (new name for P. conspurcatus Enderlein ).

Psocidus enderleini (Roesler) .— Roesler, 1943: 13; Thornton, 1961: 2.

Trichadenotecnum enderleini (Roesler) .— Smithers, 1967: 115; Smithers, 1977: 290; Smithers, 1996: 75; Lienhard & Smithers, 2002: 464.

Material examined. AUSTRALIA, NEW SOUTH WALES: 1♀, Lake Cathie, nr Port Macquarie, 12.v.1977, A.S. & C.N. Smithers; 233 1♀, Trial Bay Gaol, 12.v.1977, C.N. & A.S. Smithers; 333 3♀♀, Golden Hole, 10 km S. Stuarts Pt, 13.v.1977, C.N. & A.S. Smithers; 233, Broadwater Nat. Park, 6.v.1978, C.N. Smithers; 13, Wyrrabalong Nat. Park, 27.xi.1997, L. Wilkie; 1♀, Bola Creek, Nat. Park, 6.x.1965, A.S. Smithers.

Redescription. Male. Head white in ground colour; vertical and orbital markings brown; coronal suture pale; epicranial suture bordered with narrow brown band dorsally; frons pale brown, with irregular brown spots; eye black, large, IO/D= 0.85; ocelli white, ocellar field blackish brown; gena white; antennal socket bordered with narrow brown band; postclypeus with c. 10 longitudinal rows of brown spots; anteclypeus pale brown. Antenna pale brown, scape and pedicel slightly darker. Mouth parts white, tip of fourth segment of maxillary palpus blackish brown. Thorax. Prothorax brown. Mesonotum brown except median part, anterior lobe and lateral margins of lateral lobes of scutum white; scutellum brown; postnotum blackish brown. Metanotum brown except anterior lobe of scutum white. Meso- and metapleura blackish brown except membranous regions white. Legs white; mid and hind coxae brown; all femora with blackish brown marking near distal end; 2nd tarsomere and claws brown. Forewing ( Fig. 1 ) hyaline with brown markings; distal region sparsely covered with small spots; medially with narrow brown band running from posterior corner of pterostigma through centre of discoidal cell to distal end of cell cup; basal quarter with broad band widely interrupted around vein M. Pterostigma white except distal 2 ⁄ 5; posterior margin brown. Anal cell brown in basal half. Veins blackish brown except along Rs fork, distal half of M closing discoidal cell, and CuA 2 white; Rs fork acute; areola postica almost triangular. Hindwing hyaline; veins brown except R1, basal section of Rs and Rs+M paler. Abdomen white except first segment and terminalia brown. Terminalia ( Fig. 2 ): Posteroventral region of clunium ( Fig. 2A ) widely membranous. Eighth sternum ( Fig. 2A ) without sclerite. Epiproct ( Fig. 2B ) with two pairs of long setae laterally; epiproct lobe weakly expanded dorsally. Paraproct ( Fig. 2A ) with large basal lobe dorsally and with cone-like projection posteromedial to trichobothrial field; distal process very long, strongly curved. Hypandrium ( Fig. 2C ) symmetrical, deeply incised at middle; posterodorsal arms bulbous, each with row of tiny denticles; posterodorsal region with two pairs of processes, external pair small, triangular, arising just below bulbous arms, internal pair large, each with broad and rounded base and pointed distal end; lateral region covered with denticles; median region with longitudinal row of long and transparent articulated spines just below incision; ventral region with two pairs of processes, external pair small, internal pair long. Phallosome ( Fig. 2D,E ) very long; phallobase with welldeveloped lateral process, anteroventrally rounded. Length (mm): body (B) 2.5–3.0; forewing (FW) 3.4–3.7; hindwing (HW) 2.6–2.9.

Female. Coloration and general morphology, except terminalia, almost as in male; pigmentation much paler, probably due to long alcohol preservation; eye small, IO/ D= 2.0. Genitalia ( Fig. 3 ): Egg guide of subgenital plate ( Fig. 3A ) almost as long as wide, parallel sided, apical margin almost straight, with six thick setae and many fine setae, lateral margin also with few strong setae; body of subgenital plate V-shaped but very slightly pigmented, probably due to long alcohol preservation. Ventral valve of gonapophyses ( Fig. 3B ) short; dorsal valve narrow; external valve without posterior lobe, anteroexternally with thumbshaped lobe. Internal plate well sclerotized. Length: B 2.8– 3.2; FW 3.8–4.0; HW 2.7–3.0.

Distribution. Australia (NSW).

Remarks. Ptycta enderleini is most similar to P. floresensis Endang, Thornton & New, 2002 in forewing markings (especially in the female), medially incised hypandrium, and apically elongated phallosome. In particular, the apically elongated phallosome is apomorphic and uniquely shared by P. floresensis and P. enderleini; this character state indicates their close affinity. Female structures of gonapophyses in P. enderleini, such as the narrow dorsal valve and lack of the posterior lobe of the external valve, are similar to P. verticalis Vaughan, Thornton & New, 1991 and P. merapiensis Endang, Thornton & New, 2002. However, P. enderleini can be easily distinguished from these species by the unique forewing markings and the hypandrial structures.

Figures

Fig. 1. Forewing of Ptycta enderleini, male.

Fig. 2. Male terminal structures of Ptycta enderleini. (A) Terminalia, lateral view. (B) Epiproct, dorsal view. (C) Hypandrium, posterior view. (D) Phallosome, ventral view. (E) Ditto, lateral view.

Fig. 3. Female genitalia of Ptycta enderleini. (A) Subgenital plate, ventral view, setae on right half omitted. (B) Gonapophyses, ventral view.