Nemoura neospiniloba, Sivec & Stark, 2010

Sivec, Ignac & Stark, Bill P., 2010, Eight New Species Of The Genus Nemoura (Plecoptera: Nemouridae) From Thailand And Vietnam, Illiesia 6 (21), pp. 277-287 : 280-282

Nemoura neospiniloba sp.n.

( Figs. 9-12 )

Material examined. Holotype ♂ from Huang Sai Lueng , 98° 27’ N, 18° 31’ E, 1060 m, Doi Inthanon National Park, Chiang Mai Province, Thailand, 4 April-3 May 2003, Malaise Trap ( PMSL) . Paratypes: Thailand: Chiang Mai Province, Doi Inthanon National Park, 1200 m, Bang Khun Klang , 98° 32’ N, 18° 32’ E, 29 May-5 June 1989, P. Chantaramongkol, H. Malicky, 1♂ ( PMSL) . Same site, 8-15 May 1989, 2♂, 2♀ ( PMSL) . Same site, 3-10 July 1989, 26♂, 21♀ ( PMSL) . Same site, 5-12 July 1989, 3♂, 3♀ ( PMSL) . Same site, 10-17 July, 1989, 22♂, 22♀ ( PMSL) . Same site, 17-26 July 1989, P. Chantaramongkol, H. Malicky, 3♂, 5♀ ( PMSL) . Same site, 19-26 July 1989, 14♂, 10♀ ( BPS) . Same site, 6-13 August 1988, 1♂, 4♀ ( PMSL) . Same site, 4-11 September 1988, 2♂, 5♀ ( BPS) . Same site, 12-19 September 1989, 3♂, 2♀ ( PMSL) . Same site, 25 September-8 October 1988, 1♂ ( PMSL) . Phitsanulok Province, Phu Hin Rongkla National Park, Waterwheel Falls , 101° 00’ N, 16° 59’E, 1280 m, 10-11 April 2003, Blacklight Trap, 1♂ ( PMSL) . Phitsanulok Province, Phu Hin Rongkla National Park, Huai Man Daeng Noi , 1600 m, 101° 03’ N, 16° 57’ E, 20 May-21 June 2002, 13♂ ( BPS) . Same site, 20 July-23 August 2002, 1♂ ( PMSL) . Same site, 21 October-16 November 2002, 1♂ ( PMSL) . Same site, 14 November-14 December 2002, 3♂ ( PMSL) . Same site, 17 December 2002 - 17 January 2003, 10♂ ( PMSL) . Same site, 10 January-10 February 2003, 5♂ ( PMSL) . Same site, 10 February- 17 March 2003, 6♂ ( PMSL) . Same site, 5 April-5 May 2003, 4♂ ( PMSL) . Same site, 5 May-5 June 2003, 12♂ ( PMSL) .

Adult habitus. General color brown to dark brown. First and second segment of antennae slightly darker than the rest of antennae. Head and pronotum uniformly brown. Legs faintly banded.

Male. Forewing length 6 mm. Posterior margin of tergum 9 bears a pair of rounded, spinulose lobes and tergum 10 bears a pair of small spines set on low knobs on either side of epiproct ( Figs. 9-10 ). Epiproct short, wide, apically notched with a pair of minute processes set in the notch; apices of dorsal surface armed with small scale-like spines; ventral sclerite without obvious armature. Cerci bilobed in ventral aspect ( Fig. 11 ); ventral lobe with a prominent, inwardly curved apical spine. Vesicle about twice as long as wide ( Fig. 11 ). Paraprocts simple and without armature; inner lobes small, not shown in Fig. 11 ; outer lobes large and subtriangular with rounded apices.

Female. Forewing length 8 mm. Sternum 7 produced into a truncate lobe which covers about half of sternum 8 ( Fig. 12 ). Sternum 8 mostly membranous and without posterior projection.

Larva. Unknown.

Etymology. The species name refers to the pair of spiny lobes on the mesoposterior margin of tergum 9. The prefix has been added to distinguish this name from that of N. spiniloba Jewett.

Diagnosis. Nemoura neospiniloba is similar in tergum 9 structure to N. mucronata Li & Yang and N. furcocauda Wu ( Li & Yang 2008b). In the former species, the lobes on tergum 9 are acute and bear a single large apical spine and the paraprocts have a distinct, but small, club-shaped inner lobe. The lobes on tergum 9 are separated by about twice their width in N. furcocauda and the epiproct apex in that species is distinctly trilobed. The species is tentatively placed in the Cercispinosa Complex recognized by Baumann (1975).

Figures

Figs. 9-12. Nemoura neospiniloba. 9. Male terminalia, dorsal. 10. Male left cercus, tergum 10 and epiproct, lateral. 11. Male terminalia, ventral. 12. Female terminalia, ventral.