Jacobsonina

Wu, Keliang, Yue, Qiaoyun, Qiu, Deyi & Liu, Dexing, 2014, One new species in the cockroach genus Jacobsonina Hebard 1929 (Blattodea, Ectobiidae, Blattellinae) from Mainland China, Zootaxa 3847 (2), pp. 275-282 : 276-277

Key to the species* of Jacobsonina (males)

1. Hind margin of hypandrium asymmetrical ( Figs. 6 , 18–22)..................................................... 2

- Hind margin of hypandrium symmetrical (Figs. 23, 24, 26)..................................................... 6

2. Hind margin of hypandrium with a quadrangular medial protrusion ( Figs. 6 , 18–20)................................. 3

- Hind margin of hypandrium not as above (Figs. 21, 22)....................................................... 5

3. Body black. Medial protrusion of hind margin of hypandrium oblique to the left, and bearing some strong spinules on each cor- ner of ventral surface ( Fig. 6 )............................................................... J. erebis sp. nov.

- Body not black. Medial protrusion of hind margin of hypandrium not oblique, and strong spinules on the margin not as above (Figs. 18–20)........................................................................................ 4

4. Body pale reddish. Hind margin of protrusion of hypandrium rhomboidal, weakly directed to the left, left side slightly concave, without spinules on the ventral surface (Fig. 18)....................................................... J. parva

- Body light brown. Hind margin of protrusion of hypandrium subrectangular, left side nearly truncate and right side slightly concave, some strong spinules on the ventral surface of whole hind margin (Figs. 19, 20).................... J. platysoma

5. Left lateral angle with inverse L-shaped incision with some minute setae, right lateral angle smoothly rounded (Fig. 21)................................................................................................. J. tortuosa

- Hind margin of hypandrium with a pair of projections forming a deep U-shaped excavation, the left corner of hypandrium pro- trudent and the right side smooth (Fig. 22)......................................................... J. tricaudata

6. Hypandrium subtrigonal, lateral sides weakly concave, apex narrowly truncate (Fig. 23)....................... J. aliena

- Hind margin of hypandrium roundly convex (Figs. 24, 26).................................................... 7

7. Hypandrium strongly convex, hind margin extending beyond to supra-anal plate (Figs. 24, 26)........................ 8

- Hypandrium short, not long extending beyond to hind margin of supra-anal plate................................... 9

8. Supra-anal plate apical margin shallowly concave. Hind margin of hypandrium bearing relatively few setae. Median phallom- ere terminating in a curved spine and with a small preterminal extension (Figs. 24, 25).................. J. chiangmaiensis

- Supra-anal plate apical margin more deeply concave. Hind margin of hypandrium bearing densely setose membrane. Median

phallomere apical region acute, with a preapical dark spine (Figs. 26, 27)................................. J. excavata 9. Abdominal tergum specialized (Figs. 28, 29)............................................................... 10

- Abdominal terga unspecialized.......................................................................... 12

10. Seventh abdominal tergum specialized, with a pair of round depressions scattered with minute setae and with a triangular elevation between the fossae (Fig. 28)................................................................. J. simplex

- First abdominal tergum specialized, with a pair of large, dense, narrowly separated groups of setae (Fig. 29)............ 11

11. Accessory median phallomere consisting of 2 small sclerites, one of which is broad at the base and curves posteriorly becoming filamentous, the other small and bearing some spine (Fig. 30).................................. J. albomarginata

- Accessory median phallomere consisting of 2 small sclerites, one becomes very slender and filamentous, the other small and bearing many long setae (Fig. 31)................................................................ J. myitkyina

12. Median phallomere with a large preapical spur. Accessory median phallomere becomes very slender and filamentous (Figs. 32, 33)......................................................................................... J. spinifera

- Median phallomere without preapical spur. Accessory median phallomere with just one brush-like sclerite (Figs. 34, 35)............................................................................................... J. arca

Figures

FIGURES 5 – 10. Jacobsonina erebis sp. nov. male genitalia. 5. supra-anal plate, ventral view; 6. hypandrium, ventral view; 7. left phallomere and appendage sclerite of left phallomere, dorsal view; 8. median phallomere, dorsal view; 9. appendage sclerite of median phallomere, dorsal view; 10. right phallomere, dorsal view.