Colasposoma (Falsonerissus) grande insulare, Zoia, 2012

Zoia, Stefano, 2012, Eumolpinae (Coleoptera: Chrysomelidae) of Socotra Island, Insect biodiversity of the Socotra Archipelago (Acta Entomologica Musei Nationalis Pragae 52), pp. 449-501 : 455-457

Colasposoma (Falsonerissus) grande insulare subsp. nov.

( Figs. 8–14 , 109–110 , 140 )

Type locality. Yemen, Socotra Island, Noged plain (sand dunes), Sharet Halma vill. env., 12°21.9′ N, 54°05.3′ E.

Type material. HOLOTYPE: J, ‘ Yemen, Socotra Island, Noged plain (sand dunes), Sharet Halma vill. env., 12°21.9′N, 54°05.3′E, 20 m, 10-11.xi.2010, L. Purchart lgt. [printed white label]; Holotypus Colasposoma (Falsonerissus) grande ssp. insulare n. S. Zoia det. 2012 [printed red label]’ ( NMPC). PARATYPES (64 spec.): ‘ Yemen, Socotra Island, Delisha vill. env., 8.vi.2012, Jatropha unicostata shrubland, at light, 12°41.2′N, 54°07.7′E, 36 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (1 ♀ JBCB); ‘ Yemen, Socotra Island, Sheq vill. env., 8.vi.2012, Croton socotranus + Jatropha unicostata shrubland, 12°39.7′N, 54°03.8′E, 15 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (1 ♀ NMPC); ‘ Yemen, Socotra Island E, Kesa env., 220-300 m, N 12°39′37″, E 53°26′42″, 28-29.i.2010, L. Purchart lgt’ (1 ♀ NMPC); ‘ Yemen, Socotra Isl., 4-5.vi.2010, Qualentiah env., slopes 5km SE from Quaysoh, N 12°39.691′, E 053°26.658′, V. Hula & J. Niedobová leg.’ (1 J 1 ♀ NMPC); ‘ Socotra, dint. Detwa lagoon, 26.II.09, leg. P. Lo Cascio & F. Grita’ (1 ♀ PLCL); ‘N Sokotra, isld., Qadab loc., 25–III–2009, Leg. Saldaitis / Achat Saldaitis I.G.31.268’ (1 ♀ IRSN); ‘Sokotra Island N, Haghier Mts. Ayhaft loc., 04–III–2008 h– 500m I.G.31.496 / Leg. A. Saldaitis’ (1 ♀ IRSN); ‘N Sokotra Isld., Haghier Mt. Ayhft valley, 20–III–2009 / I.G.31.268, Leg. Saldaitis / Achat Saldaitis’ (1 ♀ IRSN); ‘ Yemen, Socotra Island, Wadi Ayhaft, 12°36.5′N, 53°58.9′E, 200m, J. Bezděk leg., 7-8.xi.2010 ’ (1 ♀ JBCB); same data, but Jiři Hájek leg. (1 J, NMPC); ‘ Yemen, Socotra Isl., Lahas, GPS 12.646N, 54.091E, 69 m, 17.-18.xi.2000, leg. V. Bejček & K. Šťastný’ (1 J, JBCB; 1 ♀ SZCM); ‘Sokotra Island N, Di Hamri env., 01–III–2008 – I.G.31.496, Leg.A. Saldaitis’ (1 ♀ IRSN); ‘ Yemen, Socotra, Gabbach di-Net, 28.x.2010, at light, Ron Felix’ (1 J 1 ♀ RBCN); ‘W Sokotra, Shuab Loc., Coast Line, Mangrove, 24–III–2009 /I.G.31.268, Leg. Saldaitis/Achat Saldaitis’ (5 JJ 8 ♀♀ IRSN; 2 JJ 2 ♀♀ SZCM); ‘ Yemen, Socotra Island, ca. 3 km NE of Shuab, Avicennia marina mangrove; sand dunes, 20.-21.vi.2012, 12°34.1′N, 53°23.9′E, 3 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (2 JJ 2 ♀♀ NMPC; 1 ♀ SZCM); ‘ Yemen, Socotra Island, Halla area, Arher, freshwater spring in sand dune, 9.-10. + 15.vi.2012, 12°33.0′N 54°27.6′E, 5 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (2 JJ NMPC; 1 J SZCM); ‘ Yemen, Socotra Island, Kaza Kazihon vill. env., 12°31′13″N, 53°55′36″E, 900 m, 5.vi.2012, V. Hula & J. Niedobová leg.’ (1 J NMPC; 1 J JBCB); ‘ Yemen, Socotra Island, Noged plain, Abataro, border of sand dunes and shrubland, 12.-13.vi.2012, 12°22.1′N, 54°03.4′E, 20 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (1 J 1 ♀ NMPC; 1 J JBCB; 1 ♀ SZCM); ‘ Yemen, Socotra Isl., Neet, x.2000, leg. V. Bejček & K. Šťastný’ (1 J 1 ♀ NMPC; 2 JJ 1 ♀ SZCM); ‘ Yemen, Socotra Isl., Hhalmi beach, N 12°21.324′, E 54°04.780′, 16.VI.2009, V. Hula lgt.’ (1 ♀ NMPC); same data, but L. Purchart lgt. (1 J JBCB); ‘ Yemen, Socotra Island, Noged plain (sand dunes), Sharet Halma vill. env., 12°21.9′ N, 54°05.3′E, 20 m, 10-11.xi.2010, L. Purchart lgt.’ (1 J, SZCM); same data, but J. Bezděk leg. (1 ♀ JBCB); same data, but J. Batelka leg. (1 J NMPC); ‘Sokotra isld., Ayhft valley, 22–XI–2008, Leg. Saldaitis/I.G.31.268, Achat Saldaitis’ (1 ♀ IRSN; 1 J SZCM); ‘ Yemen, Socotra Island, Sharet Halma vill. env., 12°21.9′N, 54°05.3′E, 20m, Jiří Hájek leg., 10-11.xi.2010 ’ (1 J NMPC); ‘Sokotra Island N, Haghier Mts h– 900m, Near Dicksam loc., 05–III–2008 I.G.31.496 Leg. A. Saldaitis’ (1 ♀ IRSN); ‘ Yemen W Socotra Isl. 6.-24.ix.1999, leg. V. Bejček & K. Šťastný’ (1 J 2 ♀♀ CULS).

Description. Habitus as in Figs. 109–110 ; body length of holotype 5.2 mm, of paratypes 5.1–6.3 mm (JJ), 5.1–7.1 mm (♀♀).

Body dark brown to black; head, pronotum and elytra brown, usually with feeble metallic bronze reflections which are sometimes more evident, head and pronotum darker; labrum and palpi reddish; antennae reddish at base, usually darkened starting from antennomere V or VI; mandibles dark brown to black; legs dark brown.

Frons weakly convex, with confuse punctures and relatively long silvery pubescence; clypeus not divided from frons, with finer and more spaced punctures and shorter pubescence. Antennomere I one fourth longer than antennomere II and nearly twice as wide; antennomere II 2.5 times longer than wide, feebly bent; antennomere III one third longer than antennomere II; antennomeres IV and V slightly shorter than antennomere III and longer than antennomere VI; antennomeres VII–X feebly widened, antennomere VII slightly longer than the following ones; antennomeres VI–X 1.6–1.7 times longer than wide; antennomere XI nearly 2.5 times longer than wide.

Pronotum 1.6–1.7 ( JJ), 1.7–1.8 (♀♀) times wider than long (2.4 × 1.4 mm in holotype), at base nearly as wide as or little wider than at distal border ; sides regularly arched and margined throughout, widest in middle; surface densely punctate, sometimes with longitudinal not punctured short stripe on disc; surface between punctures smooth and shiny, narrower than diameter of punctures; pubescence moderately long, fine, silvery, in large part recumbent.

Scutellum wider than long, rounded distally ( Fig. 14 ), pubescent.

Hypomeron punctured throughout, with moderately long pubescence; prosternum with moderately long pubescence; mesepimera bare, not punctured; metanepisterna five times longer than wide, with short pubescence.

Elytra oblong, 1.3 times longer than wide at humeri (3.6 × 2.7 mm in holotype), feebly impressed dorsally in basal fifth; sides subparallel in basal half (J) or feebly widened toward rear till three fourths of their length (♀), then regularly curved to elytral apices, which are in right angle; humeri weakly prominent; punctation slightly finer than on pronotum, irregular, finer on apical slope; pubescence shorter than on pronotum, fine, suberect. Epipleura gradually tapering toward rear, reaching elytral apices.

Legs moderately long; femora with very small median tooth, sometimes unarmed, moderately swollen; tibiae nearly straight, sometimes protibiae feebly bent; pro– and mesotarsomere I feebly widened in J. Claws bifid, starting from their midlength, with short internal tooth.

Abdomen dorsally poorly sclerotized, with exception of last visible segment.

Aedeagus as in Figs. 8–9 .

Spermatheca as in Fig. 12 ; coxites ( Fig. 13 ) moderately sclerotized in their distal portion, spiculum ventrale moderately long and thin, vagina without any sclerotization.

Variability. Some examined specimens ( Socotra: Gabbach di-Net and Sharet Halma vill.) show a shorter and more recumbent dorsal pubescence and shorter antennomeres, although other characteristics (genitalia included) perfectly match with those of specimens from other localities.

Differential diagnosis. Colasposoma (Falsonerissus) grande insulare subsp. nov. is characterized by shorter antennomeres VII–XI (twice longer than wide in C. (F.) grande grande ), stronger punctation of the pronotum, elytral sides subparallel in the proximal half (feebly widened toward rear in the basal half in C. (F.) grande grande ) and apex of aedeagus more elongated ( Figs. 8–9, 15–16 ).

Etymology. The name underlines the differentiation of the population of Socotra from the nominal form in Yemen mainland.

Figures

Figs. 8–18. 8–14 – Colasposoma (Falsonerissus) grande insulare subsp. nov. (8–11, 14: J holotype; 12–13: ♀, Shuab): 8 – aedeagus, apex, dorsal view; 9 – aedeagus, lateral view; 10 – tegmen; 11 – ventral sclerite of sternite IX; 12 – spermatheca; 13 – coxite; 14 – scutellum. 15–18 – Colasposoma (Falsonerissus) grande grande (Lefèvre, 1890) (Lectotype): 15 – aedeagus, apex, dorsal view; 16 – aedeagus, lateral view; 17 – ventral sclerite of sternite IX; 18 – scutellum.

Figs. 105–116. Habitus, dorsal and lateral view of: 105–106 – Colasposoma (Falsonerissus) socotranum (Gahan, 1903) (♀, wadi Ayhaft); 107–108 – C. (F.) grande grande (Lefèvre, 1890) (J lectotype); 109–110 – C. (F.) grande insulare subsp.nov.(J holotype); 111–112 – C. (F.) distinguendum sp. nov. (J holotype); 113–114 – C. (F.) villosum sp. nov. (J holotype); 115–116 – C. (Colasposoma) austerum sp. nov. (J holotype).

Figs. 139–144. Distribution maps of the species based on the studied material (in Fig. 142, question marks indicate a possible montane form of C. (C.) brevepilosum sensu lato, see species description).