Paragonophlebia patriciae, Nel, 2009

Nel, André, 2009, A new Odonata family from the Jurassic of Central Asia (Odonata: Epiproctophora), Journal of Natural History 43 (1 - 2), pp. 57-64 : 62-63

Paragonophlebia patriciae sp. nov.

( Figure 3 )

Material

Holotype male specimen PIN 4270 /873, Arthropod Laboratory , Palaeontological Institute, Russian Academy of Science, Moscow, Russia.

Etymology

Named after Patricia Nel, wife of the author.

Geological setting

Late Jurassic, Shar-Teg, Gobi-Altai Aymag, Mongolia ( Rasnitsyn and Zherikhin 2002).

Diagnosis

See that of Paragonophlebia inexpectata .

Description

Basal half of a male hind wing, 10.9 mm wide; distance between base and arculus about 4 mm, between arculus and nodus, 16.8 mm, pterostigma unknown; MAb short, 1.1 mm long, more or less aligned with distal free part of CuA; CuP separating from MP at about 3 mm from wing base; median and submedian areas free of cross-veins; subdiscoidal space very broad and transverse, posteriorly opened; anal area more or less triangular, free of cells, about 4 mm long and 2 mm wide; an anal angle, but not very acute; CuA separating from MP slightly distal, 0.2 mm of posterodistal angle of discoidal cell, CuA directed towards posterior wing margin for 1.0 mm, before its separation into CuAa and CuAb; CuAb 2 mm long, directed towards posterior wing margin, and not reaching AA; four or five rows of cells in area between CuAa and posterior wing margin in widest part; CuAa distally zigzagged and vanishing in area between MP and posterior wing margin; distance between apex of CuAa and wing base about 15 mm; area between CuA and MP with one or two rows of large transverse cells and a distal constriction; MP nearly straight, reaching posterior margin well distal of nodus level; MAa very slightly curved and distally zigzagged, more or less parallel with MP, with one row of cells in postdiscoidal area, 1.3 mm wide; two very strong primary antenodal cross-veins, Ax1 0.8 mm basal of arculus and Ax2 about 1.8 mm distal of arculus; Ax2 oblique and Ax1 perpendicular to ScP and R+MA; 11 secondary antenodal cross-veins in first row and 12 in second row; postnodal cross-veins not preserved; 13 cross-veins in area between RA and RP, between arculus and nodus; base of RP3/4 3.6 mm distal of arculus, closer to arculus than to nodus; base of IR2 well distant from that of RP3/4, 4.4 mm distally; 11 Bqs cross-veins; base of RP2 aligned with subnodus; area between MA and RP3/4 greatly widened distally, distal of nodus level.

Figures

Figure 3. Paragonophlebia patriciae sp. nov., holotype PIN 4270/873, drawing of hind wing (scale bar represents 2 mm).