Phalacridae, Leach, 1815

Gimmel, Matthew L., 2012, Phalacridae of Socotra Island (Coleoptera: Cucujoidea), Acta Entomologica Musei Nationalis Pragae 52, pp. 233-240 : 234

Key to Phalacridae of Socotra Island

1. Elytron with nine distinct, nearly complete striae ( Fig. 11 ); frontoclypeus not emarginate above antennal base. .................................................... Pseudolibrus gestroi Flach, 1889

– Elytron with one or two incomplete striae near suture, remainder of elytron smooth ( Figs. 1 , 6 ); frontoclypeus with small emargination above antennal base. ................................ 2

2. Elytron with one stria near suture ( Fig. 1 ); antenna with four-segmented club ( Fig. 5 ); metatarsus exceedingly long and slender ( Fig. 4 ). ............................................................. .......................................................................... Olibrosoma eudaimonarabiana sp. nov.

– Elytron with two striae near suture ( Fig. 6 ); antenna with three-segmented club ( Fig. 10 ); metatarsus not notably longer than other tarsi ( Fig. 9 ). ........ Olibrus socotranus sp. nov.

Figures

Figs. 11-15. Pseudolibrus gestroi Flach, 1889. 11 – dorsal habitus; 12 – tegmen, ventral; 13 – penis, ventral; 14 – metatibia and tarsus, ventral; 15 – antenna. Scale bars = 0.3 mm.

Figs. 1-5. Olibrosoma eudaimonarabiana sp. nov. 1 – dorsal habitus; 2 – tegmen, ventral; 3 – penis, ventral; 4 – metatibia and tarsus, ventral; 5 – antenna. Scale bars = 0.3 mm.

Figs. 6-10. Olibrus socotranus sp. nov. 6 – dorsal habitus; 7 – tegmen, ventral; 8 – penis, ventral; 9 – metatibia and tarsus, ventral; 10 – antenna. Scale bars = 0.3 mm.