Microlia panamensis Gusarov

Gusarov, Vladimir I., 2002, A revision of the genus Microlia Casey, 1910 (Coleoptera: Staphylinidae: Aleocharinae: Hoplandriini), Zootaxa 34, pp. 1-24 : 21-23

6. Microlia panamensis Gusarov , sp. nov. ( Figs. 77­79 )

Type material. Holotype: PANAMA: Darién:, Cana Biological Station, Serranía de Pirre, 1450m, 7º45’18”N 77º41’06”W, flight intercept trap (J.Ashe, R.Brooks), 7­ 9.vi.1996 ( KSEM).

Diagnosis: Microlia panamensis can be distinguished from other species of Microlia by spermatheca with numerous irregular loops ( Fig. 79 ), the absence of female accessory sclerites and by mesotarsus with 5 segments.

Description: Length 1.8 mm. Head, elytra and abdominal segments 3­4 yellowish brown, pronotum, legs, antennal articles 1­7 and mouthparts brownish yellow, abdominal segments 5­7 and antennal articles 8­11 brown.

Head surface glossy, on disk with weak isodiametric microsculpture, puncturation fine, distance between punctures ½­1 time their diameter. Eye twice as long as temples.

Pronotum strongly transverse, 1.3 times wider than head, width 0.43 mm, length 0.29 mm, width to length ratio 1.5, surface glossy, with weak and poorly visible (at x70) microsculpture; puncturation finer than on head, distance between punctures 1­2 times their diameter. Elytra wider (0.57 mm) and longer (0.47 mm, measured from humeral angle) than pronotum (pronotal length to elytral length ratio 0.61), 1.2 times wider than long, glossy, microsculpture and puncturation as on pronotum. Mesotarsus with 5 segments.

Abdominal terga glossy, with fine and poorly visible (at x70) microsculpture consisting of meshes, with fine puncturation, distance between punctures 1­3 times their diameter.

Female tergum 8 with straight posterior margin ( Fig. 78 ), sternum 8 with posterior margin forming obtuse lobe ( Fig. 77 ). Spermatheca forming multiple irregular loops ( Fig. 79 ). No female accessory sclerites.

Distribution: Known from a single locality in Panama ( Fig. 80 ).

Natural History: The only known specimen was collected with flight intercept trap.

Figures

FIGURE 80. Geographical distribution of Microlia Casey. 1 – M. silacea (Erichson); 2 – M. meticola (Casey); 3 – M. azteca (Casey); 4 – M. pentamera Gusarov, sp. nov.; 5 – M. tetramera Gusarov, sp. nov.; 6 – M. panamensis Gusarov, sp. nov.

FIGURES 77 ­ 79. Details of Microlia panamensis Gusarov, sp. nov. (holotype). 77 – female sternum 8; 78 – female tergum 8; 79 – spermatheca. Scale bar 0.2 mm.