Eosembia

Poolprasert, Pisit, Sitthicharoenchai, Duangkhae, Lekprayoon, Chariya & Butcher, Buntika Areekul, 2011, Two remarkable new species of webspinners in the genus Eosembia Ross, 2007 (Embioptera: Oligotomidae) from Thailand, Zootaxa 2967, pp. 1-11 : 9-10

Key to males of Eosembia (adult males)

The identification key is modified from Poolprasert and Edgerly (2011).

1. LC1 slender, distally expanded and lobed (Figs. 5A–5G)....................................................... 2

- LC1 not abruptly lobed (Figs. 5H–5O)..................................................................... 8

2. 10LP broad (Figs. 5A–5D).............................................................................. 3

- 10LP narrow (Figs. 5E–5G)............................................................................. 6

3. 10LP parallel-sided, apex asymmetrically rounded, outer margin thin; 10 RP elongated, extensively membranous inner margin, apex with small outer hook; LC1 elongated, slightly constricted medially then expanded mesally at distal tip (Fig. 5A).................................................................................................. E. thoracica

- 10LP not parallel sided; 10 RP slender with hooked apex (Figs. 5B–D)............................................ 4

4. 10LP spoon-shaped, abruptly constricted basally, right margin arcuate, left margin sinuous; 10 RP slender, evenly tapered to apex; LC1 slender, slightly lobed (Fig. 5B)....................................................... E. hainanensis

- 10LP spatulate with strongly obtuse outer-apical angle (Figs. 5C, D)............................................. 5

5. 10LP rather broad but narrower than E. auripecta , 10 RP long, with long membranous inner margin, apex with small outer hook; LC1 more slender than in E. auripecta , slightly lobed (Fig. 5C)........................................... E. laotica

- 10LP broader than in E. laotica , 10 RP long, broadly membranous inner margin, apex with small outer hook; LC1 long, slightly lobed (Fig. 5D).............................................................................. E. auripecta

6. 10LP long, very slender, equally tapered to apex; 10 RP broad, sclerotized halfway up inner side; LC1 very long, slightly lobed (Fig. 5E).................................................................................... E. nepalica

- 10LP and 10 RP both slender and narrow (Figs. 5F, G)........................................................ 7

7. 10LP with small hook at apex; 10 RP elongated, narrow with small outer hook at tip; LC1 with enlarged lobe (Fig. 5F)................................................................................................... E. apterosa

- 10LP gradually and evenly narrow and rounded terminally; 10 RP long, gradually and equally narrowing caudally, apex with small outer hook; LC1 slightly dilated on inner side apically (Fig. 5G).................................... E. montana

8. LC1 subcylindrical (Figs. 5H–K).......................................................................... 9

- LC1 gradually expanded but not lobed (Figs. 5L–O)......................................................... 12

9. 10LP broad, tapered and arcuate caudally, apex truncate with single serration at outer angle; 10 RP long, broad, gradually narrowing caudally with small membranous inner margin; LC1 constricted, gradually expanded toward apex (Fig. 5H)...................................................................................................... E. varians

- 10LP narrow (Figs. 5I –K).............................................................................. 10

10. 10LP long, arched leftward, evenly tapered to apex; 10 RP parallel-sided except for abruptly tapered apex; LC1 constricted, gradually expanded distally (Fig. 5I).......................................................... E. aequicercata

- 10LP slender, curved with outer spine or hook at tip (Figs. 5J, K)............................................... 11

11. LP long, slightly constricted, rounded apex with a small spine on its left side; 10 RP long, broad and gradually tapered to apex; LC1 broad, slightly constricted at base (Fig. 5J)...................................................... E. garvelyi

- 10LP long, curved and slightly tapered leftward, apex with blunt outer hook; 10 RP long, expanded basally then parallel-sided with obtuse apex and membranous inner margin; LC1 elongated, constricted terminally (Fig. 5K)............... E. malaya

12. LC1 gradually incurved basally (Figs. 5L, M)............................................................... 13

- LC1 slightly dilated distally but not lobed (Figs. 5N, O)....................................................... 14

13. 10LP long, broad, spatulate, with sharp-edged obtuse outer-apical angle; 10 RP very slender, narrow with small hook at apex, inner margin mostly membranous (Fig. 5L).................................................. E. paradorni sp. n.

- 10LP very broad, scoop-like, inner side evenly arcuate, outer side straight with small, acute basal projection; 10 RP long, broad, gradually narrowing caudally, inner margin mostly membranous (Fig. 5M)........................... E. spatha

14. 10LP broad, spatulate with a sharp outer-apical angle; 10 RP long with long membranous inner margin, gradually arched rightward with small outer hook at apex; LC1 long, club-like (Fig. 5N).................................. E. lamunae sp. n.

- 10LP medium broad, inflexed, caudal margin constricted, then enlarged, outwardly slanted; 10 RP nearly straight, apex rounded with small spine on right side and mostly membranous inner margin; LC1 gradually expanded but not lobed (Fig. 5O).......................................................................................... E. myanmara