Mayatyphlus carltoni Gusarov

Gusarov, Vladimir I., 2003, Mayatyphlus carltoni Gusarov, a new genus and species of leptotyphline staphylinid beetle from Belize (Coleoptera: Staphylinidae: Leptotyphlinae), Zootaxa 165, pp. 1-7 : 4-5

Mayatyphlus carltoni Gusarov , sp. n. ( Figs. 1­18 )

Type material. Holotype:, BELIZE: Orange Walk Distr., Rio Bravo Conservation / Management Area, La Milpa Station, Chiche Trail, 17º50'22"N 89º01'12"W, lot #119, berlese (C.E.Carlton & D.Murray), 18.v.1997 ( KSEM).

Paratypes: BELIZE:, 2, same data as the holotype ( LSAC).

Diagnosis. Mayatyphlus carltoni is the only known species of the genus Mayatyphlus . If any additional species of Mayatyphlus are ever discovered, M. carltoni could be distinguished by the shape of the aedeagus, especially the apex of the median lobe ( Figs. 13­15 ), and by the shape of the female accessory sclerites ( Fig. 17 ).

Description. Length 0.7­0.8 mm.

Head with short setae arranged as in Figs. 1­2 . Second and third antennal articles as long as wide and twice as wide as article 3, articles 3­9 strongly transverse, 1.6­2.0 times as wide as long, article 10 1.5 times as wide as long, last article as long as wide ( Fig. 9 ).

Pronotum with short setae arranged as in Fig. 1 , narrowed posteriad, 1.1 times as long as wide, as wide as head and elytra ( Fig. 1 ). Elytra with short setae, with parallel lateral sides ( Fig. 1 ), 1.1 times as long as wide (length measured from humeral level).

Abdominal terga with long setae ( Fig. 1 ).

Male protarsus with adhesive setae ( Fig. 10 ). Male mesotrochanter with denticle ( Fig. 11 ). Male abdominal sternum 8 with broad apical emargination and narrow medial zone devoid of setae ( Fig. 16 ).

Aedeagus with short and narrow parameres, apex of median lobe in lateral view Sshaped, in parameral view asymmetrical, with two subapical processes pointed to the left ( Figs. 13­15 ).

Female abdominal sternum 8 as in Fig. 18 . Female accessory sclerites as in Fig. 17 .

Distribution. Known from a single locality in Belize.

Natural History. Mayatyphlus carltoni presumably inhabits soil and/or leaf litter, and was collected using Berlese funnels.

Figures

FIGURES 1 ­ 12. Details of Mayatyphlus carltoni Gusarov, gen. n., sp. n. (male paratype). 1 – forebody; 2 – head, ventral view (microsculpture shown on one side only); 3 – prothorax, ventral view; 4 – meso­ and metathorax, ventral view (microsculpture shown on one side only); 5 – left mandible, dorsal view; 6 – right mandible, dorsal view; 7 – labrum, dorsal view; 8 – right maxilla, ventral view; 9 – right antenna, dorsal view; 10 – left anterior leg, dorsal view; 11 – left middle leg, ventral view; 12 – left posterior leg, ventral view. Scale bar 0.1 mm (1 ­ 6, 8 ­ 12), 0.05 mm (7).

FIGURES 13 ­ 18. Details of Mayatyphlus carltoni Gusarov, gen. n., sp. n. (paratypes). 13 – aedeagus, parameral view; 14 ­ 15 – aedeagus, lateral view; 16 – male sternum 8; 17 – female abdominal segments 9 ­ 10, ventral view; 18 – female sternum 8. Scale bar 0.1 mm.