Nallachius

Machado, Renato José Pires & Rafael, José Albertino, 2010, Two new species of Dilaridae (Insecta: Neuroptera) with additional notes on Brazilian species, Zootaxa 2421, pp. 61-68 : 66

Key to Brazilian species of Nallachius (modified from Penny, 1981)

1. In forewing, MP 2 vein fused with CuA vein ( Fig. 3 a) ................................................................................................. 2

1 ’. In forewing, MP 2 vein not fused with CuA vein ( Fig. 3 b)........................................................................................... 3

2. Forewing with apex rounded and RS vein five branched ( Fig. 3 c) ........................................................... N. maculatus

2 ’. Forewing with apex plainly asymmetrical and RS vein three or four branched ( Fig. 3 a).............................. N. adamsi

3. Labrum black, male genitalia with dorso-lateral plate of gonarcus ( Fig. 4 a).................................................... N. limai

3 ’. Labrum pale, male genitalia without dorso-lateral plate of gonarcus ( Fig. 4 d)............................................................ 4

4. Dorsal lobes of ectoprocts approximated on midline ( Fig. 2 a)..................................................................................... 5

4 ’. Dorsal lobes of ectoproct widely separated on midline ( Fig. 4 c) ................................................................................. 8

5. Forewing with RS vein four branched. Genitalia: median lobe with apex forked ( Fig. 2 c)............... N. furcatus n. sp.

5 ’. Forewing with RS vein five branched. Genitalia: median lobe with apex simple, only membrane forked ( Fig. 4 b) .. 6

6. Most distal costal crossveins forked ................................................................................................................. N. ovalis

6 ’. Most distal costal crossveins simple............................................................................................................................. 7

7. Male genitalia with lateral projections of mediuncus pointed and gonocoxites lancet-shaped ( Fig. 4 b)....... N. dicolor

7 ’. Male genitalia with lateral projections of mediuncus rounded and gonocoxites scimitar-shaped ( Fig. 4 d) .................. .............................................................................................................................................................. N. phantomellus

8. Costal crossveins unforked ........................................................................................................................ N. infuscatus

8 ’. Many costal crossveins forked...................................................................................................................................... 9

9. Body flat black, forewing with wide brown bands....................................................................................... N. prestoni

9 ’. Body white with black tubercles, forewing with narrow brown bands .............................................. N. potiguar n. sp.