Perileptus (Perileptus) stierlini Putzeys, 1870

Felix, Ron F. F. L., Farkač, Jan & Suleiman, Ahmed Saeed, 2012, Annotated checklist of the Carabidae (Coleoptera) of the Socotra Archipelago, Insect biodiversity of the Socotra Archipelago. (Acta Entomologica Musei Nationalis Pragae 52), pp. 75-106 : 102-103

Perileptus (Perileptus) stierlini Putzeys, 1870

Material examined (17 spec.). YEMEN: SOCOTRA ISLAND: Goeeh , 12°32′25″N, 54°10′22″E, 240 m. a.s.l., 23.x.2000, 6 spec., lgt. A. van Harten, det. M. Baehr ( HLMD) ; Wadi Esgego , Diksam plateau, 12°28′09″N, 54°00′36″E, 300 m a.s.l., 2.–3.xii.2003, 3 spec., lgt. D. Král, det. R.F.F.L.Felix ( NMPC) ; Wadi Di-Negehen , 12°38′33.0″N, 54°03′18.5″E, 20.ii.2009, 1 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Zerik , Diksam, 12°30′09.1″N, 53°49′27.8″E, 21.ii.2009, 2 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Mahaba , 12°38′53.2″N, 54°08′56.3″E, 25.ii.2009, 4 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Qalansiyah , 12°41′47.5″N, 53°29′02.8″E, 28.ii.2009, 1 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Hoq cave , 12°35′15.83″N, 54°21′16.26″E, 4.iii.2009, 1 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Zemhon area , 12°30′58″N, 54°06′39″E, 270–350 m a.s.l., 3.–4.ii.2010, 1 spec., lgt. L. Purchart & J. Vybíral, det. R.F.F.L. Felix ( NMPC) ; Wadi Ayaft , 12°36′39.1″N, 53°58′44.8″E, 26.x.2010, 3 spec., lgt.& det. R.F.F.L. Felix ( RFBE) ; Wadi Ayaft , 12°36.5′N, 53°58.9′E, 200 m a.s.l., 7.–8.xi.2010, 1 spec., lgt. Jiří Hájek, det. R.F.F.L. Felix ( NMPC) .

Diagnosis. Body length 2.3–2.7 mm. Head and pronotum reddish yellow, elytra more brownish yellow, slightly darker towards apex. Tooth on labrum indistinct or lacking.Antennomeres I–III yellow, rest of antennae somewhat darker, short. Elytra covered with setae in rows, obviously

scarcer than in P. testaceus Putzeys, 1870 . Elytral stria deep, with large punctures.

Comments on classification. Perileptus stierlini is a very small, completely testaceus species. It is similar to Perileptus rutilus Schaum, 1886 , which has larger eyes (five times as long as the temples; in P. stierlini only three times as long as the temples) and elytral punctures much more vague and superficial.

Collection circumstances. The specimen from Hoq cave was found among P. cf. testaceus and Tachyura ferrugata at dusk, at the entrance under gravel. Those from Wadi Ayhaft were collected at light.

Distribution. Known from Egypt, Sinai, Israel and Yemen. First record from Socotra Island.

Perileptus (Pyrrotachys) cf. testaceus Putzeys, 1870 Material examined (124 spec.). YEMEN: SOCOTRA ISLAND: Wadi Esgego, Diksam plateau, 12°28′09″N,

54°00′36″E, 300 m a.s.l., 2.–3.xii.2003, 5 spec., lgt. D. Král, det. R.F.F.L. Felix ( NMPC) ; Wadi Zeeriq , 12°31′08″N, 53°39′09″E, 750 m a.s.l., 3.xii.2003, 3 spec., lgt. D. Král, det. R.F.F.L. Felix ( NMPC) ; Arher , NE-coast, dunes, fresh water, 1388419N, ~224191E, 50 m a.s.l., 18.–19.ii.2008, 1 spec., lgt. & det. I. Brunk (not collected) ; Wadi Daerhu , east of Diksam plateau, 13838N, ~175060E, ~ 300 m a.s.l., 20.ii.2008, 2 spec., lgt. & det. I. Brunk ( IBCD) ; Ayheft valley , 22.xi.2008, 1 spec., lgt. Saldaitiene & Saldaitis, det. R.F.F.L. Felix ( IRSB) ; Wadi di-Negehen, 12°38′33.0″N, 54°03′18.5″E, 20.ii.2009, 6 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Zerik , Diksam, 12°30′09.1″N, 53°59′24.2″E, 21.ii.2009, 4 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayhaft , camp, 12°36′58.7″N, 53°59′30.6″E, 22.ii.2009, at light, 42 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayhaft , river, 12°36′49.1″N, 53°59′26.4″E, 22.ii.2009, 1 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Ridah (Mômi), 12°32′40.3″N, 54°17′41.1″E, 24.ii.2009, at light, 19 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Irih , 12°27′05.5″N, 54°09′16.6″E, 3.iii.2009, 12 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Hoq cave , 12°35′15.83″N, 54°21′16.26″E, 4.iii.2009, 2 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Diksam canyon, 23.iii.2009, 1 spec., lgt. Saldaitis, det. R.F.F.L. Felix ( IRSB) ; Ayeft valley , 20.i.2010, 1 spec., lgt. Saldaitis, det. R.F.F.L. Felix ( IRSB) ; Zemhon area , 12°30′38″N, 54°06′39″E, 270–350 m a.s.l., 3.–4.ii.2010, 12 spec., lgt. L. Purchart & J. Vybíral, det. R.F.F.L. Felix ( NMPC) ; Wadi di-Negehen, 12°36′55.58″N, 54°03′48.28″E, 25.x.2010, 3 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayaft , 12°36′41.1″N, 53°58′05.9″E, 171 m a.s.l., 26.x.2010, 3 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayaft , 12°36′21.7″N, 53°59′33.9″E, 265 m a.s.l., 26.x.2010, 3 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayaft , 12°36′39.1″N, 53°58′44.8″E, 26.x.2010, 2 spec., lgt. & det. R.F.F.L. Felix ( RFBE) ; Wadi Ayaft , 12°36.5′N 53°58.9′E, 200 m a.s.l., 7.–8.xi.2010, 1 spec., lgt. J. Hájek, det. R.F.F.L. Felix ( NMPC) ; Dixam plateau, Firmihin ( Dracaena forest), 12°28.6′N, 54°01.1′E, 490 m a.s.l., 15.–16.xi.2010, 1 spec., lgt. L. Purchart, det. R.F.F.L. Felix ( NMPC) .

Diagnosis. Body length 2.8–3.9 mm. Completely testaceous. Frontal furrows shallower than in Perileptus areolatus (Creuzer, 1799) . Median tooth on labrum obvious. Pronotum shorter, at base less sinuate, lateral margins of pronotum rounded before posterior angles, surface with more distinct microsculpture. Elytral striae visible. Antennae and legs rather long.

Comments on classification. A species very variable in length. It is possible that the material consists of more than one species.

Collection circumstances. The specimens from Hoq cave were collected among Tachyura ferrugata under gravel at dusk at the entrance. Those from Wadi Ayhaft were collected at light and those from Wadi di Negehen and Wadi Zerik were found in the gravel of the river bank.

Distribution. Known from Oman, Yemen, the United Arab Emirates and North and East Africa. First record from Socotra Island.