Microlarnaca dicrana (Bey-Bienko, 1962)

Lu, Xiangyi, Bin, Wei & Bian, Xun, 2021, Contribution to the knowledge of Chinese Gryllacrididae II: Study of the genus of Microlarnaca (Orthoptera:) with description one new species from Yunnan, China, Zootaxa 5061 (2), pp. 353-360 : 357

Microlarnaca dicrana (Bey-Bienko, 1962)

ḴẊ小Dzō

Figs 6–9 , 10A

Diagnosis. The apical area of male ninth abdominal tergite not contorted ( Fig. 6H–I ), the processes of tenth abdominal stergite slender and longer than styli ( Fig. 6F, G, H, L ); ventral process of basal margin of female subgenital plate narrower and not surpassing the posterior margin of subgenital plate, subgenital plate about 2 times as wide as long ( Fig. 8F ).

Additional description. Male. Radius with forks in subapical area into two veins. Media anterior of left tegmen arises from radius behind mid-length of tegmen; media posterior fuses with cubitus anterior in basal area, then divides into MP and CuA, shortly after fused and then divided again ( Fig. 7C ). On the right tegmen, media and cubitus anterior with common base, media anterior gives rise to MP+CuA near end of basal quarter, then MP+CuA forks behind mid-length of tegmen into MP and CuA ( Fig. 7D ). Both tegmina: cubitus posterior simple, free throughout; with 4 anal veins.

Female. Left tegmen ( Fig. 9C ): Media leaning on the radius and temporarily fused with in subbasal area and divided again; media posterior absent. Right tegmen ( Fig. 9D ): media fused at base with radius; cubitus forks between basal third and mid-length of tegmen into two branches, the first branch makes a curvature and receives a very short oblique connection vein from radius but remains single-branched as M+CuA1, the second branch undivided.

Material examined. 2 males, Mengjiao, Cangyuan, Yunnan, 5 June , 2021, coll. by Jing Liu ; 1 female, Nantianmen, Gengma , Yunnan, July 24, 2021, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang ; 1 male, Nantianmen, Gengma , Yunnan, July 26, 2021, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang ; 2 females, Nangunhe, Cangyuan , Yunnan, August 10, 2021, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang ; 1 female, Nangunhe, Cangyuan , Yunnan, August 12, 2021, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang ; 1 female, Nangunhe, Cangyuan , Yunnan, August 14, 2021, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang ; 1 female, Nangunhe, Cangyuan , Yunnan, August 15, 2021, Nangunhe, Cangyuan, Yunnan, coll. by Xiangyi Lu, Xiaojuan Huang & Zhenyong Huang .

Figures

FIGURE 6. Microlarnaca dicrana (Bey-Bienko, 1962). Male: A. head in frontal view; B–C. head and pronotum: B. lateral view, C. dorsal view; D. second and third abdominal tergites in lateral view; E–F, H–J, L. apex of abdomen: E. lateral view, F. dorsal view, G. apico-dorsal view, H–I. apico-ventral view, J. latero-ventral view, L. ventral view; K. processes of tenth abdominal tergite in apical view.

FIGURE 7. Microlarnaca dicrana (Bey-Bienko, 1962). Male: A–B. habitus in lateral view; C–D. tegmina in dorsal view: C. left tegmen, D. right tegmen.

FIGURE 8. Microlarnaca dicrana (Bey-Bienko, 1962). Female: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. second and third abdominal tergites in lateral view; E–F. apex of abdomen: E. lateral view, F. ventral view.

FIGURE 9. Microlarnaca dicrana (Bey-Bienko, 1962). Female: A–B. habitus in lateral view; C–D. tegmina in dorsal view: C. left tegmen, D. right tegmen.

FIGURE 10. Microlarnaca spp. A. Microlarnaca dicrana (Bey-Bienko, 1962), male; B. Microlarnaca zhengi Lu & Bian sp. nov., female.