Lispinus

Irmler, Ulrich, 2009, New species and records of the genus Lispinus with a key to the species from Peru (Coleoptera: Staphylinidae: Osoriinae), Zootaxa 2263, pp. 42-58 : 55-56

Key to Lispinus species of Peru

1. Sides of pronotum dilating posteriad or parallel, without distinct emargination anteriad posterior angle ( Figs. 10 A, 10B) .............................................................................................................................................................................. 2

- Sides of pronotum narrowing to posterior angles or with distinct emargination anteriad posterior angle ( Figs. 10 C– 10F) ............................................................................................................................................................................. 5

2. Sides of pronotum dilating posteriad, pronotum nearly twice as wide as long ( Fig. 10 A); 3rd antennomere nearly 3

times as long as 2nd ............................................................................................................. L. laticollis Erichson, 1840 - Sides of pronotum in front of posterior angles parallel, pronotum slightly wider than long ( Fig. 10 B); 3rd antennom- ere not more than 2 times as long as 2nd........................................................................................................................ 3

3. Each elytron with lateral furrow on disc ( Figs. 5–7 ); pronotum slightly narrowed at middle, but parallel in front of posterior angles; microsculpture of elytra closely and longitudinally reticulate, iridescently shiny .............................. ................................................................................................................................................ L. striola Erichson, 1840

- Elytra without lateral furrows on disk, only with two large setiferous punctures each; microsculpture of elytra net- like reticulate and not iridescently shiny....................................................................................................................... 4

4. Elytra very finely and sparsely punctate ( Fig. 10 H); 3rd antennomere less than twice as long as 2nd, paramera of aede- agus trilobed ............................................................................................................... L. laeviusculus Bernhauer, 1910

- Elytra densely and distinctly punctuate; 3rd antennomere twice as long as 2nd; paramera of aedeagus bilobed ............ .......................................................................................................................................... L. attenuatus Erichson, 1840

5. Pronotum straightly narrowed to posterior angles, without emargination in front of posterior angels ( Fig. 10 C) ...... 6

- Pronotum distinctly emarginate in front of posterior angles, emargination short in some species ( Figs. 10 D–10F). 12

6. Body larger, 5.4–5.7 mm; elytra with net-like reticulate microsculpture, fine punctation and on disc with two large setiferous punctures each .......................................................................................... L. quadripunctulus Fauvel, 1865

- Body smaller, <5.0 mm................................................................................................................................................ 7

7. Body smaller, 3.8–4.0 mm; elytra with weak, longitudinally reticulate microsculpture, surface shiny ...................... 8

- Body larger, 4.5–4.8 mm, with more distinct microsculpture of elytra ....................................................................... 9

8. Elytra quadrate, their punctation sparser, distance between punctures about the same as diameter of punctures ( Fig. 10 I) ............................................................................................................................................ L. newtoni Irmler, 1994

- Elytra longer than wide, their punctation denser and deeper, distance between punctures much less than diameter of punctures ( Fig. 7 E) .............................................................................................................................. L. minimus n.sp.

9. Elytra with weak net-like reticulate microsculpture ( Fig. 8 E); pronotum with fine and sparse punctation, distance between punctures twice as wide as diameter of punctures, surface of pronotum and elytra slightly shiny ( Fig. 8 P)... ........................................................................................................................................................... L. speciosus n.sp.

- Ground sculpture of elytra dense and longitudinally reticulate, surface of elytra dull .............................................. 10

10. Posterior angles of pronotum obtusely rounded; endophallus of aedeagus with one torsion .... L. tardus Sharp, 1887

- Posterior angles of pronotum rectangular; endophallus of aedeagus with more than one torsion ........................... 11

11. Both elytra and pronotum wider than long ......................................................................... L. listenbarthi Irmler, 1994

- Both elytra and pronotum longer than wide .............................................................................. L. lunaris Irmler, 1994

12. Depressions at posterior angles of pronotum deeply margined at outer side and with dense reticulation, their surface dull ............................................................................................................................................................................. 13

- Depressions at posterior angles not deeply margined at outer side, smoothly depressed, their surface not distinctly differing from surface of disc ..................................................................................................................................... 15

13. Body larger, 4.7 mm ............................................................................................................................ L. blandus n.sp.

- Body smaller, <4 mm ................................................................................................................................................. 14

14. Sides of pronotum rounded anteriad posterior emargination, widest in middle ( Fig. 10 E) ........................................... ....................................................................................................................................... L. bolivianus Bernhauer, 1929

- Sides of pronotum more or less parallel anteriad posterior emargination, widest near front angles ( Fig. 1 ) ................. ........................................................................................................................................................... L. peruanus n.sp.

15. Each elytron with a row of deeply impressed punctures forming more or less fine deep furrow similar to the one in L. striola .......................................................................................................................................... L. catena Sharp, 1876

- Elytra without furrows, on disc of each elytron often with one or two deeper and larger setiferous punctures than normal punctation ...................................................................................................................................................... 16

16. Punctures of pronotum and elytra deep and dense, distance between punctures less than half diameter of punctures, surface shiny, sparsely covered by short undulate micro-striae................................................ L. socialis Irmler, 1994

- Punctures of pronotum and elytra less deep and sparser, their ground sculpture more distinct and dense, their surface only slightly shiny ...................................................................................................................................................... 17

17. Elytra with transversely reticulate ground sculpture ( Fig. 10 L)................................................ L lescheni Irmler, 2001

- Elytra with longitudinally reticulate ground sculpture ............................................................................................... 18

18. Elytra about as long as wide; abdominal tergites laterally with strigae; body smaller ≤ 3.5 mm .................................. .............................................................................................................................................. L. linearis Erichson, 1840

- Elytra longer than wide; abdominal tergites without strigae; body larger, 4.0– 4.3 mm ............................................. 19

19. Microsculpture of pronotum and elytra distinct and dense, their surface dull; depression at posterior angles of prono- tum flat .................................................................................................................................. L. fungicola Irmler, 2001

- Microsculpture of pronotum and elytra weaker, their surface shiny; depression at posterior angles of pronotum deep ( Fig. 10 F) .................................................................................................................... L. sinuatocollis Bernhauer, 1942

Figures

FIGURE 10. Pronotum (A – F) and elytra (G – L) of Lispinus. A— Lispinus laticollis, B, G— L. striola, C— L. quadripunctulus, D— L. catena, E— L. bolivianus, F— L. sinuatocollis, H— L. laeviusculus, I— L. newtoni, J— L. listenbarthi, K— L. lunaris, L— L. lescheni. Scale bar: 0.5 mm.

FIGURES 5 – 8. Surface of pronotum (P) and elytra (E) of Lispinus. 5 — Lispinus peruanus, 6 — L. blandus, 7 — L. minimus, 8 — L. speciosus. Scale bar: 0.1 mm.

FIGURES 1 – 3. Details of Lispinus peruanus (1), L. blandus (2) and L. minimus (3). A—fore body; B—antenna; Cmedian lobe of aedeagus in lateral aspect; D—paramera; E—spermatheca. Scale bars: 1 mm (A), 0.5 mm (B), 0.1 mm (C – E).