The presence of the recurrent veinlet in the Middle Jurassic Nymphidae (Neuroptera): a unique character condition in Myrmeleontoidea Author Makarkin, Vladimir N. Author Yang, Qiang Author Shi, Chaofan Author Ren, Dong text ZooKeys 2013 325 1 20 http://dx.doi.org/10.3897/zookeys.325.5453 journal article http://dx.doi.org/10.3897/zookeys.325.5453 1313-2970-325-1 Daonymphes bisulca sp. n. Figs 1, 2, 6A Diagnosis. As for the genus. Description. Forewing 29 mm long as preserved (estimated complete length about 40 mm), 11.5 mm wide. Costal space relatively broad for entire length, narrowed basally. Humeral veinlet recurrent, with one short branch. Subcostal veinlets somewhat curved, mostly forked once or twice, shallowly, few deeply; several proximal veinlets simple. ScA well developed, terminating on ScP within humeral area. Subcostal space narrow, with several scarce crossveins. RA space relatively narrow, slightly narrowed towards wing apex, with relatively numerous crossveins. RP with nine preserved branches, becoming more closely spaced towards wing apex. Crossveins rather numerous over entire radial space, irregularly spaced. M forked distal of origin of RP. MA incomplete, simple for entire preserved length. MP distally pectinate, with six preserved branches, most of these forked once or twice; no crossveins detected between branches. Cu divided into CuA, CuP rather far from wing base. CuA distally pectinate, with six preserved branches, all forked once or twice; one series of crossveins between branches of CuA, continued CuP ( 'pseudo-CuP' ). CuP long, strongly pectinately branched with nine long branches; of four proximal-most branches, two forked; all distal branches dichotomously forked; no crossveins detected. Eleven crossveins between CuA, CuP rather irregularly spaced. AA3+4 and its posterior branch deeply forked. Basal crossvein between CuP, AA3+4 very short; distal crossvein strongly oblique. AP1+2 deeply forked. AP3+4 not preserved. Membrane around one crossvein between MA, MP near MP and three crossveins between CuA, CuP near CuA broadly heavily shaded; most crossveins between RA, RP apparently broadly shaded, pale fuscous. Figure 1. Daonymphes bisulca gen. et sp. n. Holotype CNU-NEU-NN2011119 as preserved. Scale bar = 10 mm. Figure 2. Daonymphes bisulca gen. et sp. n. Forewing venation of the holotype CNU-NEU-NN2011119. Scale bar = 10 mm. Material. Holotype CNU-NEU-NN2011119, deposited in CNUB; an incomplete forewing. Type locality and horizon. Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China. Jiulongshan Formation, Middle Jurassic. Etymology. From the Latin bisulcus,-a,-um, forked, divided into two parts, in reference to its forked subcostal veinlets.