Blattodea Brunner von Wattenwyl, 1882

Patel, Raman, Rana, Rajendra Singh & Nel, Andre, 2021, First two cockroaches from the early Eocene of western Rajasthan, India (Insecta Blattodea), Zootaxa 4927 (3), pp. 445-450 : 447-448

Order Blattodea Brunner von Wattenwyl, 1882

( Figs 2–3 )

Material. Specimens GU/ R /B/G/3009 (tegmen); GU/ R /B/G/3004 (incomplete tegmen and incomplete hind wing); deposited in Department of Geology, HNB Garhwal University Srinagar Uttarakhand, India.

Horizon and Locality. Carbonaceous and maroon shale beds of the Palana Formation (early Eocene), Gurha opencast lignite mine Bikaner Rajasthan.

Descriptions. Specimen (GU/ R /B/G/3009) ( Fig. 2 ). Incomplete tegmen with postero-apical part missing; original coloration not preserved; wing 24.8 mm long, about 8.2 mm wide; ScP ends on anterior margin, 8.8 mm from wing base, with weak anterior branches; R ends at wing apex, with numerous distally forked anterior branches, all parallel; area between R and anterior wing margin 2.6 mm wide; RA and RP not well differentiated; median area rather reduced, with few branches of M; CuA with numerous parallel branches covering a broad area; CuP+PCu strongly arched and concave; veins of postcubital-anal area all parallel and ending into CuP+PCu.

Specimen (GU/ R /B/G/3004) ( Fig. 3 ). Distal halves of a tegmen and a hind wing, darkened (original color); fragment of tegmen 16 mm long, about 5.5 mm wide ( Fig. 3A ); numerous anterior branches of R and area between R and anterior wing margin broad, ca. 2.3 mm wide ( Fig. 3A ); fragment of hind wing 6.7 mm long with numerous branches of main veins ( Fig. 3B ) and a part of anal fan ( Fig. 3C ), partly folded below rest of wing so that cubital branches seem not to be parallel to anal fan.

Figures

FIGURE 2. (A) GU/R/B/G/3009; (B) features mark in GU/R/B/G/3009; (C) line diagram of GU/R/B/G/3009. Scale bars = 2 mm.

FIGURE 3. (A) GU/R/B/G/3004, part of tegmen; (B) GU/R/B/G/3004, part of hind wing; (C) GU/R/B/G/3004, part of hind wing; (D) tegmen and hind wing of modern Periplaneta banksi Hanitsch, 1931.