Praetextatus typicus Distant, 1901

Ahmad, Imtiaz & Zahid, Muhammad, 2006, Redescription Of The Caystrine Genus Praetextatus Distant Along With Its Type Species P. Typicus Distant (Hemiptera: Pentatomidae) With Referance To Their Unknown Characters Of Metathoracic Scent Auricle And Genitalia And Key To Its Known Species And Their Relationships, Int. J. Biol. Biotech. 3, No. 1, pp. 1-5 : 2-4

Praetextatus typicus Distant

(Figs.1-4)

Praetextatus typicus Distant 1901: 584 ; 1902: 134; Kirkaldy 1909: 208; Rider et al. 2002: 144

Colouration:

Body above with legs and labium dark brown, of chocolate colour; corium a little paler in hue, membrane fuliginous; antennae piceous with apical segment stramineous; body beneath black; pronotum with two small central pale spots on anterior disc; dorsally thickly punctuate; scutellum transversely wrinkled.

Head:

Anteocular region longer than posterior of head including eyes; length of antennal segments I 0.6mm, II 0.9mm, III 1.3mm, IV 1.7mm, V 1.8mm, antennal formula 1>2>3>4>5; labium reaching mesocoxae (Fig. 2); length of anteocular region 1.1mm; length of remainder of head 0.9mm; width of head including eyes 3.1mm.

Thorax:

Pronotum distinctly more than 2x broader than its length, anterior margin distinctly wider than head width, lateral margins slightly sinutate, length 2.7mm width 7.2mm; scutellum slightly longer than broad with sub rounded apical lobe, length 4.7mm, width 4.4mm; metathoracic scent ostiole round, auricle thumb-like (Fig. 3); distance base scutellum-apex clavus 3.8mm; apex clavus-apex corium 2.3mm; apex corium-apex abdomen including membrane 2.2mm; apex scutellum- apex abdomen including membrane 3.4mm.

Abdomen:

Convex beneath, connexiva distinctly exposed at repose; total length 13.0mm.

Female genitalia:

Posterior margin of 7 th abdominal sternum concave laterally, medially weakly convex; posterior margin of first gonocoxae convex, overlapping each other; 9 th paratergites with lateral margin distinctly sinuate and passing beyond posterior margin of fused 8 th paratergites; posterior margin of proctiger weakly concave.

Material examined:

Holotype female, Burma, Distant coll., “type” at BMNH, London

Comparative note:

P. typicus could easily be separated from P. chinensis in having much longer body measuring 13.0mm and of dark brown colour in contrast to much shorter body measuring 9.0-10.5mm and body light coloured in P. chinensis .