Nanna ceratopygia Birket-Smith, 1965

Durante, Antonio, Apinda-Legnouo, Emelie Arlette & Romano, Chiara, 2013, Second contribution to the knowledge of the Lithosiini of Gabon: the genus Nanna Birket-Smith (Lepidoptera, Erebidae, Arctiinae), European Journal of Taxonomy 65, pp. 1-15 : 6

Nanna ceratopygia Birket-Smith, 1965

Figs 3 A-B, 4A, 5A

Nanna ceratopygia Birket-Smith, 1965: 40-42 .

Type material

Holotype

♂, BMNH, examined.

Allotype

♀, GABON: Makokou-Ipassa , 500 m, 0°30’43’’N, 12°48’13’’E, 16-28 Feb. 2012; gen. prep. n. 730/13 MAD, MSNS.

Type locality

Bitje, Ja river, Cameroons, leg. Joyce? 1915.

Other material examined

GABON: Makokou-Ipassa, 500 m, 0°30’43’’N, 12°48’13’’E, 2 ♂♂, 1 ♀, 5-10 Apr. 2010; 3 ♂♂, 19 Feb.- 11 Mar. 2011; 5 ♂♂, 1♀, 16-28 Feb. 2012; MSNS and MAD.

Description

Habitus

Wingspan: ♀ 39-44 mm. General aspect similar to the male, larger and with a bigger abdomen.

Genitalia

Seventh segment slightly sclerotized, one and a half times longer than the sixth segment; the sternite with a deep concavity in the middle of its caudal margin to accommodate the sterigma; pleurae with one triangular membranous thickness, cephalad with a shallow pouch consisting of membranous thick tissue. Eighth segment slightly sclerotized, as long as the sixth one; sternite with two membranous lateral shallow concavities and the central portion forming a well sclerotized squarish lamella postvaginalis. Anterior apophyses very short, about one third as long as the eight segment; posterior apophyses two times longer than the anterior ones. Dorsal pheromone glands a little longer than the posterior apophyses.

Ostium bursae membranous, no lamella antevaginalis. Ductus bursae almost as long as large broad, internally covered by spiculate thorns; its caudal portion naked, with a small dorsal dome-shaped appendix holding the ductus seminalis. Corpus bursae lenticular, internally covered by spiculate thorns except around the signum. Signum concave, roundish, with small thorns.

Distribution

Cameroon (type locality, Birket-Smith 1965). Nigeria ( Birket-Smith 1965); Gabon (new locality).

Remarks

This species, hitherto only known from the type locality and Nigeria, is now also reported from Gabon. The female is recorded and hereafter described for the first time (an allotype is designed in the sense of ICZN art. 72.1.3, Recommendation 72A).

Figures

Fig. 3.Adults. A. Nanna ceratopygia Birket-Smith, 1965, ♂, Gabon, Makokou-Ipassa, 500 m, 0°30’43’’N 12°48’13’’E, 19 Feb.-11 Mar. 2011. B. Nanna ceratopygia, ♀ allotype. C. Nanna eningae (Plötz, 1880), ♀ holotype. D. Nanna eningae, ♂, Gabon, Makokou-Ipassa, 500 m, 0°30’43’’N 12°48’13’’E, 19 Feb.- 11 Mar. 2011, gen. prep. n. 697/12 MAD. E. Nanna eningae, ♂, Gabon, Makokou-Ipassa, 500 m, 0°30’43’’N 12°48’13’’E, 16-28 Feb. 2012, gen. prep. n. 705/12 MAD. F. Nanna eningae, ♀, Gabon, Makokou-Ipassa, 500 m, 0°30’43’’N 12°48’13’’E, 5-10 Apr. 2010. G. Nanna semigrisea sp. nov., ♂ paratype, gen. prep. n. 709/12 MAD. H. Nanna semigrisea sp. nov., ♂ paratype, gen. prep. n. 708/12 MAD. I. Nanna semigrisea sp. nov., ♀ paratype, gen. prep. n. 699/12 MAD. J. Nanna molouba sp. nov., ♂ holotype.