Neoperla furcomaculata Kong & Li

Kong, Fanbin, Lv, Junfeng & Li, Weihai, 2014, Three new species of Neoperla in the montivaga group (Plecoptera: Perlidae) from China, Zootaxa 3841 (3), pp. 429-438 : 433-437

Neoperla furcomaculata Kong & Li , sp. nov.

( Figs. 5–6 )

Male. Forewing length 8.7 mm. General body color yellowish brown. Distance between ocelli narrower than diameter of the ocellus. Head brownish, with a Y-shaped dark area between ocelli and M line and a small triangular spot on the anterior frons ( Fig. 5 a); compound eyes and ocelli black; antennae and mouthparts brownish. Pronotum pale with indistinct markings ( Fig. 5 a); wing membrane subhyaline, veins brown; legs brownish. Abdominal segments pale brown, terminalia processes and cerci dark brown.

Terminalia. Process of tergum 7 small and triangular, covered by many marginal sensilla basiconica ( Figs. 5 b, c). Tergum 8 with a median patch of small spines ( Fig. 5 b). Tergum 9 with two patches of sensilla basiconica. Hemitergal processes of tergum 10 strongly sclerotized and finger like, with a slight median curve. Aedeagal tube with sclerotized dorsal band and a pair of dorsoapical spinose projections ( Fig. 5 d). Aedeagal sac nearly parallel sided, with spinules on most of the surface except the apical with an incomplete ring of large spines; an elongate basoventral projection with spinose apex and an apical membranous narrow one also present ( Figs. 5 d, 6). Etymology. The species name refers to head pattern of the holotype.

Distribution. China (Hainan Province).

Diagnosis and remarks. The male of new species is characterized by a very elongate ventral aedeagal projection and two small dorsal spinulose lobes and an incomplete spinose ring at apex of sac. Therefore, this species is tentatively assigned to the N. oculata species complex and seems similar to the Bornean N. divergens Zwick 1986 (figs. 62–63 in Zwick 1986). Neoperla furcomaculata has a basoventral projection with spinose apex but without subapical protrusions whereas the sac of N. divergens has several subapical protrusions and swellings in addition to the basoventral spinose projection (Fig. 63 in Zwick 1986).

Figures

FIGURE 5. Neoperla furcomaculata Kong & Li, sp. nov., male. a. Head and pronotum, dorsal view. b. Terminalia, dorsal view. c. Terminalia, lateral view. d. Everted aedeagus, lateral view.

FIGURE 6. Neoperla furcomaculata Kong & Li, sp. nov., male. a. Everted aedeagus, dorsal view. b. Everted aedeagus, oblique ventral view.