Neoblaste cochleata, Kentjonowati, Endang Sri, 2010

Kentjonowati, Endang Sri, 2010, The subfamily Amphigerontiinae (Insecta: Psocoptera: Psocidae) in Sumatra, Indonesia, with descriptions of nine new species, Zootaxa 2436, pp. 1-27 : 4-8

Neoblaste cochleata , sp. nov.

( Figs 1–6 )

Male unknown.

Female. Coloration (after ca.5 years in alcohol). Head yellowish brown. Epicranial suture brown with light brown patches each side to posterior margin of vertex and mesial to each orbit. Eyes black. Ocelli pale, black centripetally. Frons vertex suture brown; frons with median triangular brown mark, postclypeus dark brown; anteclypeus dark brown on dorsal half otherwise pale. Labrum dark brown. First and second segment of maxillary palps dark brown, otherwise pale. Gena unmarked. Antenna brown. Thorax brown. Fore wing ( Fig.1 ) dark brown on the apical half, otherwise suffused brown, pterostigma dark brown. Hind wing ( Fig. 2 ) suffused brown. Leg brown except femur yellowish.

Morphology. IO: D 2.8. Ct 21(t1), 2(t2). Fore wing ( Fig.1 ) with pterostigma smoothly rounded, discoidal cell wide anteriorly, areola postica five-sided. Subgenital plate ( Fig. 3 ) main plate broad, posterior lobe rounded, setose. Gonapophyses ( Fig. 4 ): ventral valve elongate with very long sharp point, dorsal valve broad, pointed apically, outer valve transverse with long setae. Spermapore plate ( Fig. 5 ) with lateral sclerotisation. Epiproct ( Fig. 6 ) trapezoidal with long lateral sclerotised prongs. Paraproct ( Fig. 6 ) with field of about 26 trichobothria.

Dimensions. B 2.45; FW 2.95; HW 2.15; F 0.7; T 1.10; t1 0.35; t2 0.14; t1/t2 2.5; f1 0.48; f2 0.35; f1/f2 1.37.

Holotype female: INDONESIA, SUMATRA, Bukit Barisan Selatan National Park, Penetoh Kubu perahu Liwa, beating, mixed cultivated trees, 740m, 8.I.1996, ESK.

Remarks. This species differs from all described species of the genus in having the main body of the subgenital plate with a broad sclerotised area, and rounded setose posterior lobe. The spermapore plate also differs from other species in having lateral sclerotisation.

The specific name is derived from the Latin for ‘spoon’, referring to the shape of the subgenital plate apical lobe.

Neoblaste torquata , sp. nov. ( Figs 7–16 )

Male. Coloration (after ca.3 years in alcohol). Head yellowish, with the following brown: Epicranial suture, confluent patches each side of epicranial suture extending to posterior margin of vertex and mesial to each orbit, median circular mark on frons, frons vertex suture, striation on post clypeus, dorsal third of anteclypeus, labrum, apical segment of maxillary palp and antenna. Ventral two-thirds of anteclypeus pale. Gena unmarked. Eyes black. Ocelli pale, dark brown centripetally. Thoracic terga dark brown, yellowish along sutures. Fore wing ( Fig. 7 ) light brown. Hind wing ( Fig. 8 ) light brown. Legs pale except tibia and tarsal segments brown.

Morphology. IO:D 1.8; Ct 20(t1), 1(t2). Fore wing ( Fig. 7 ) pterostigma smoothly rounded posteriorly, discoidal cell wide anteriorly, areola postica appearing five sided. Hypandrium ( Fig. 9 ) symmetrical with two pairs of free accessory sclerites, the median ones with two pairs of pointed hooks, the lateral pair serrate, pointing towards mid-line. Phallosome ( Fig.10 ): parameres separate, long, with subapical boss and hooked posteriorly. Epiproct and paraproct ( Fig. 11 ), paraproct with field of about 25 trichobothria. Dimension s. B 1.25; FW 2.7; HW 2.0; F 0.65; T 1.10; t1 1.30; t2 0,10; t1/t2 3; f1 0.53; f2 0,43; f1/f2 1.23. Female.

Coloration (after ca.3 years in alcohol), similar to male.

Morphology. IO:D: 2.4; Ct 20(t1), 1(t2). Fore wing ( Fig. 12 ) with pterostigma smoothly rounded posteriorly, discoidal cell wide anteriorly, areola postica appearing five-sided. Subgenital plate ( Fig. 14 ) with short posterior lobe, narrowing and bearing long setae apically. Disc with Y-shaped sclerotisation.

Gonapophyses ( Fig. 15 ) ventral valve elongate pointed apically, dorsal valve with long sharp apical spine; a field of setae on the lateral edge and a field of chitinous papillae on ventral edge; outer valve transverse bearing very long setae, posterior lobe long. Epiproct and paraproct ( Fig. 16 ), epiproct trapezoidal, paraproct with field of about 21 trichobothria.

Dimensions. B 1.9; FW 3.15; HW 2.15; F 0.55; T 1.06; t1 0.32; t2 0.10; t1/t2 3.2; f1 0.52; f2 0.40; f1/f2 1.3.

Holotype male: INDONESIA, SUMATRA, North, Tapanuli Selatan, protected area Padang Sidempuan, beating, Pine, 610m, 2.II.1997, ESK. Paratypes: 1male, 1 female: same data as holotype.

Remarks. In general the male hypandrium is similar to described species in having pairs of free accessory sclerites. The parameres somewhat resemble those of N. brunnea Endang & Thornton and several Chinese species figured by Li (2002), in having a hook and a large subapical boss, but are clearly distinct from all of these. The specimens above differ also from these species in that the hypandrium has two pairs of pointed apical hooks. The female genitalia in general are similar to those of N. complexa from West Java, but differ somewhat in the shape of outer gonapophysis valve and the long sharp spine on the apex of the dorsal valve. The unusual tapered apex of the subgenital plate resembles that of N. fujianensis Li & Yang (as figured by Li 2002), but the sclerotisation pattern differs considerably.

The species name is an allusion to the spanner-like form of the male parameres.

Figures

FIGURES 1 – 6. Neoblaste cochleata sp. nov., female: 1, fore wing; 2, hind wing; 3, subgenital plate; 4, gonapophyses; 5, spermapore plate; 6, epiproct and paraproct. (Figs 1, 2 and 4 – 6 to common scales)

FIGURES 7 – 11. Neoblaste torquata sp. nov., male: 7, fore wing; 8, hind wing; 9, hypandrium; 10, paramere; 11, epiproct and paraproct. (Figs 7, 8 and 9 – 11 to common scales)

FIGURES 12 – 16. Neoblaste torquata sp. nov., female: 12, fore wing; 13, hind wing; 14, subgenital plate; 15, gonapophyses and spermapore plate; 16, epiproct and paraproct. (Figs 14 – 16 to common scale)