Caryedon sudanensis Southgate, 1971

Delobel, Alex, 2012, Bruchinae (Coleoptera: Chrysomelidae) from Socotra Island, Acta Entomologica Musei Nationalis Pragae 52, pp. 373-380 : 377-378

Caryedon sudanensis Southgate, 1971

( Figs. 5–6 )

Material examined (89 spec.). YEMEN: SOCOTRA ISLAND: Qaareh waterfall, Noged Plain, 12°20′10″N 53°37′56″E, 57 m, 5.–6.xii.2003, 1 spec., P. Kabátek leg. ( NMPC); Homhil Protected Area, 360 m, 12°34′27″N 54°18′32″E, 28.–29.xi.2003, 1 spec., P. Kabátek leg. ( NMPC); same data, 4 spec., D. Král leg. (3 spec. in NMPC, 1 spec. in CBAD); same data, 11 spec., J. Farkač leg. ( CULS); Dixam plateau, Wadi Esgego, 12°28′09″N 54°00′36″E, 300 m, 2.–3.xii.2003, 5 spec.,P.Kabátek leg.( NMPC);Dixam plateau,Wadi Zeeriq, 12°31′08″N 53°59′09″E, 750 m, 3.xii.2003, 1 spec., D. Král leg. ( NMPC); Elhe nursery, 12°18′56.7″N 54°43′14.7″E, 90 m, 19.vi.2009, 4 spec., L. Purchart leg. (2 spec. in NMPC, 2 spec. in CBAD); Elhe nursery, 12°32′3969″N 54°04′4385″E, 19.vi.2009, 3 spec., V. Hula leg. ( NMPC); Qualentiah env., slopes 5 km SE from Queysoh, 12°39.691′N 53°26.658′E, 4.–5.vi.2010, 1 spec., V. Hula & J. Niedobová leg. ( NMPC); Deiqub cave env., 10.vi.2010, 1 spec., V. Hula & J. Niedobová leg. ( NMPC); Zemhon, 12°32′17″N 54°04′12″E, 260–320 m, 20.vi.2009, 6 spec., L. Purchart leg. (3 spec. in NMPC, 3 spec. in CBAD); Wadi Ayhaft, 12°36.5′N 53°58.9′E, 200 m, 7.–8.xi.2010, 3 spec., J. Hájek leg. (2 spec. in NMPC, 1 spec. in CBAD); same data, 5 spec., J. Bezděk leg. ( JBCB);Aloove area, Hasan vill. env., 12°31.2′N 54°07.4′E, 221 m, 9.–10.xi.2010, 3 spec., J. Hájek leg. ( NMPC); same data, 5 spec., J. Bezděk leg. ( JBCB); Noged Plain (sand dunes), Sharet Halma vill. env., 12°21.9′N 54°05.03′E, 20 m, 10.–11.xi.2010, 1 spec., J. Bezděk leg. ( CBAD); Delisha vill. env., Jatropha unicostata shrubland, 12°41.2′N 54°07.7′E, 36 m, at light, 8.vi.2012, 3 spec., J. Bezděk, J.Hájek, V.Hula, P.Kment, I.Malenovský, J. Niedobová & L. Purchart leg. ( NMPC); Homhil Protected Area, open woodland with Boswellia & Dracaena trees, 12°34.5′N 54°18.5′E, 360–500 m, 10.–11.vi.2012, 3 spec., J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg. ( NMPC); Homhil Protected area, Ain Tsahrin spring, 12°34.2′N 54°18.5′E, 435 m, 11.vi.2012, 11 spec, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg. ( NMPC); Aloove area, Aloove vill. env., Jatropha unicostata shrubland with Boswellia elongate trees, 12°31.2′N 54°07.4′E, 221 m, 19.–20.vi.2012, 15 spec., J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg. ( NMPC); Dixam plateau, Firmihin, Dracaena woodland, 12°28.6′N, 54°01.1′E, 490 m, 14.–15.vi.2012, 2 spec., J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg. ( NMPC).

Distribution. Restricted to Algeria, Egypt, Erithrea, Somalia, and Sudan. First record from Socotra Island. The mention of C. sudanensis in the United Arab Emirates ( DELOBEL 2011) is erroneous and resulted from confusion with C. yemenensis Decelle, 1979 . The latter is apparently absent from the African continent and Socotra Island.

Comments. A species long confused with C. pallidus (Olivier, 1790) . The different vaginal sclerites of C. sudanensis are asymmetrical, and highly variable in size and shape, with irregular limits. There are usually four pairs of large sclerites (dorsal, anterolateral, anteroventral, posteroventral, see Figs. 5–6 ), and a pair of small rounded sclerites in posterolateral position, sometimes absent.A drawing of the vaginal sclerites of C. yemenensis , a closely related species, is provided for comparison ( Fig. 7 ). As noted by YUS RAMOS (2010), the number of sclerite pairs in C. yemenensis is only three (dorsal, anterior ventrolateral and posteroventral).

Larvae of C. sudanensis feed on the seeds of Senna alexandrina Mill. ( Caesalpinioideae : Cassieae ). In Socotra, Senna holosericea (Fresen.) Greuter is a common species, occurring on all sampled localities (P. Kment, pers. comm.). Cassieae are common in dry Sahelian areas of Africa and are hosts of several Caryedon species , such as C. cassiae (Gyllenhal, 1833) , C. gonagra , and C. pallidus .

Figures

Figs. 5–7. 5–6 – Female genitalia of Caryedon sudanensis Southgate, 1971: 5 – dorsal view; 6 – lateral view of vagina, showing dorsal (d), anteroventral (av), posteroventral (pv), anterolateral (al), and posterolateral (pl) sclerites. 7 – female genitalia of Caryedon yemenensis Decelle, 1979, dorsal view, with dorsal, posteroventral and anterior ventrolateral (avl) sclerites.