Colasposoma (Colasposoma) purcharti, 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 : 463-465

Colasposoma (Colasposoma) purcharti sp. nov.

( Figs. 37–44 , 119–120 , 143 )

Type locality. Yemen, Socotra Island, Firmihin, 12°28′27.9″N, 54°0′54.2″E.

Type material. HOLOTYPE: J, ‘ Yemen, Socotra Isl., Firmihin , 400-500 m, N 12°28′27.9″, E 54°0′54.2″, 22.-25.vi.2009, L. Purchart lgt. [printed white label] ; Holotypus Colasposoma (Colasposoma) purcharti n. sp. S. Zoia det. 2012 [printed red label]’ ( NMPC). PARATYPES (73 spec.): ‘ Yemen, Soqotra Is. , Homhil protected area, 28.-29.xi.2003, N 12°34′27″ E 54°18′32″, 364 m [GPS], leg. P.Kabátek’ (1 ♀ NMPC) ; ‘ Yemen, Socotra Island, wadi Ayhaft , 12°36.5′N, 53°58.9′E, 7-8.xi.2010, L. Purchart lgt’ (1♀ JBCB) ; ‘ Yemen, Socotra Island, wadi Ayhaft , 12°36.5′N, 53°58.9′E, 200 m, J. Bezděk leg., 7-8.xi.2010 ’ (1 ♀ SZCM) ; ‘ Yemen. Socotra Island, Hagher Mts , wadi Madar, montane shrubland with Cephalocroton socotranus , 18.vi.2012, 12°33.2′N, 54°00.4′E, 1170 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (4 JJ 1 ♀ NMPC; 1 J JBCB; 1 J SZCM) ; ‘ Yemen, Socotra Island, Dixam plateau, wadi Zerig, 2.vi.2012, 12°29.6′N, 53°59.5′E, 655 m, V. Hula & J. Niedobová leg.’ (13 JJ 9 ♀♀ NMPC; 3 JJ 3 ♀♀ JBCB; 4 JJ 4 ♀♀ SZCM) ; ‘ Yemen, Socotra Island, Dixam plateau, wadi Zerig , pools, Juncus marsh ; Dracaena trees; cave, 13.-14.vi.2012, 12°29.6′N, 53°59.5′E, 655 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (8 JJ 4 ♀♀ NMPC; 1 J 1 ♀ JBCB; 2 JJ 1 ♀ SZCM) ; ‘ Yemen. Socotra Island, Dixam plateau, 14.-15.vi.2012, Firmihin, Dracaena woodland, 12°28.6’N, 54°01.1”E, 490 m, Socotra expedition 2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg.’ (1 ♀ NMPC) ; ‘ Yemen, Socotra Island, Shibhon , 680 m, N 12°28′1.5″, E 53°58′31.4″, 13.vi.2009, L. Purchart lgt.’ (2 ♀♀ NMPC) ; ‘ Yemen, Socotra Island, Zemhon area , 270-300 m, N 12°30.58′, E 054°06.39′, 16.- 17.6.2010, V. Hula leg.’ (1 J, NMPC) ; ‘ Yemen, Socotra Isl. , 4.- 5.vi.2010, Qualentiah env., slopes 5 km SE from Quaysoh, N 12°39.691′, E 053°26.658′, V. Hula & J. Niedobová leg.’ (1 J, JBCB; 1 J, SZCM) ; ‘ Sokotra isld., Ayhft valley, 22–XI–2008, Leg. Saldaitis / I.G.31.268 Achat A. Saldaitis’ (2 JJ, IRSN; 1 J, SZCM) ; ‘ W Sokotra, Shuab Loc. , Coast– Line, Mangrove, 24–III–2009 / I.G.31.268, Leg. Saldaitis, Achat Saldaitis’ (1 J, IRSN) .

Description. Habitus as in Figs. 119–120 ; body length of holotype 4.0 mm, of paratypes 3.6–4.6 mm (JJ), 3.6–4.9 mm (♀♀). Body dark metallic cupreous with some greenish reflections, seldom completely green; head, pronotum and elytra dark, metallic, with some cupreous (dorsum) and greenish (mostly on head and elytral sides) reflections, seldom totally metallic green; labrum reddish, mandibles black, palpi yellowish; antennae reddish, antennomeres VII–XI slightly darkened; legs, including tarsi, dark reddish, with some metallic reflections.

Frons regularly convex, on whole surface with confused, moderately strong punctures and fine pubescence, surface between punctures smooth, shiny; punctation stronger and confluent between eyes; clypeus not separated from frons, bare, with punctation finer than on frons, its distal border concave. Two apical palpomeres oblong, penultimate nearly two thirds of ultimate in length, 1.5 times longer than wide. Antennomere I nearly 1.5 times as long as II and nearly twice as wide, feebly bent on outer side; antennomere II two times longer than wide; antennomere III nearly as long as I and more than 3 times longer than wide; antennomeres IV and V subequal to III; antennomere VI shorter; antennomeres VII–X dull, feebly widened, VII a little longer than the following ones; antennomere XI one fourth longer than X.

Pronotum 1.8–1.9 times wider than long (2.2 × 1.2 mm in holotype); sides arched and margined throughout, widest in basal third; angles with small tooth with bristle; surface with relatively strong, spaced punctation, punctures stronger and partially confluent on pronotal sides in females; pubescence fine, usually absent on pronotal disc.

Scutellum a little wider than long, rounded, punctured, usually bare.

Hypomeron with spaced punctures and fine pubescence; distal margin of prosternum almost straight at sides, concave at middle, margined; prosternum separated from hypomeron by deep notosternal suture; prosternum in midline nearly as long as wide between procoxae, almost flat, finely punctate, with long whitish pubescence. Mesoventrite narrower than prosternum between coxae, its distal edge nearly straight, surface finely punctured, pubescent; mesepimera not punctured, with fine microreticulation, bare. Metaventrite finely punctured, with long pubescence, distal border concave between metacoxae, incised in middle; metacoxae little more spaced than mesocoxae; metanepisterna nearly 3.6 times longer than wide, finely punctured, rugose, with fine and close pubescence.

Elytra oblong, only little longer than wide at humeral level (2.5 × 2.4 mm in holotype); surface regularly convex in males, with elytral punctation moderately strong, spaced, partially arranged in longitudinal rows, leaving three narrow, not well defined stripes which are not punctured; surface between punctures smooth, flat, with secondary very fine punctation; in females elytral surface feebly impressed on basal third and with low carina on sides of apical slope ( Fig. 44 ), elytral punctation somewhat stronger than in males, particularly on elytral sides where it is confluent, rugose; apices at right angle; humeri not prominent, smooth, not punctured in males, moderately prominent and with scarcely visible punctation in females; elytral surface bare in both sexes. Epipleura strongly angled with elytral surface, not punctured, bare and smooth, wide at base and gradually tapering to elytral apices.

Legs moderately long; femora unarmed, feebly swollen; tibiae straight, protibial surface rough in distal half ( Fig. 43 ); pro- and mesotarsomere I–III, and metatarsomere I–II widened in males. Claws bifid in about their midlength, with inner tooth very short.

Dorsal side of abdomen scarcely sclerotized, with exception of pygidium which has more or less rounded and pubescent apex; abdominal ventrites roughly punctured and pubescent.

Aedeagus as in Figs. 37–38 ; internal sac without any evident sclerotization.

Spermatheca as in Fig. 42 ; coxites short, conical, sclerotized; spiculum ventrale relatively long and thin; vagina without any sclerotization.

Differential diagnosis. Colasposoma (Colasposoma) purcharti sp. nov. is a smaller species with dark metallic coloration, related to C. (C.) blandum Weise, 1904 from Kenya, C. (C.) subcostatum Gerstaecker, 1871 from Eastern Africa, and C. (C.) atrocyaneum sp. nov. From C. (C.) blandum, the new species differs mainly in finer punctation of dorsum, shorter elytral carina in female (in C. (C.) blandum, carina starts from the elytral humeri and is made by a series of irregular tubercles), and stronger punctures of hypomera. From C. (C.) subcostatum it mainly differs in smaller size, pubescent metanepisterna, more convex pronotum and stouter antennomeres VI–X. From C. (C.) atrocyaneum sp. nov. it differs in the pubescent and punctured metanepisterna and in smaller body size.

Etymology. I am pleased to name this species after Luboš Purchart (Brno, Czech Republic) who collected a part of the material studied.

Figures

Figs. 35–43. 35–36 – Colasposoma (Colasposoma) unicostatum sp. nov. (♀ holotype): 35 – spermatheca; 36 – side of elytron. 37–43 – Colasposoma (Colasposoma) purcharti sp. nov. (37–39, 43:J holotype; 40–41:J, Qualentiah; 42:♀, wadi Ayhaft): 37 – aedeagus, apex, dorsal view; 38 – aedeagus, lateral view; 39 – aedeagus apex, lateral view; 40 – tegmen; 41 – ventral sclerite of sternite IX; 42 – spermatheca; 43 – protibia and tarsus.

Figs. 44–52. 44 – Colasposoma (Colasposoma) purcharti sp. nov. (J holotype): elytron, lateral view. 45–52 – Colasposoma (Colasposoma) hajeki sp. nov. (45–48: J holotype; 49–52: ♀, Firmihin): 45 – aedeagus, apex, dorsal view; 46 – aedeagus, lateral view; 47 – tegmen; 48 – ventral sclerite of sternite IX; 49 – spermatheca; 50 – elytron, lateral view; 51 – claws of metatarsi; 52 – prosternum, meso– and metaventrite.

Figs.117–128. Habitus, dorsal and lateral view of: 117–118 – Colasposoma (Colasposoma) unicostatum sp. nov. (J holotype); 119–120 – C. (C.) purcharti sp. nov. (J holotype); 121–122 – C. (C.) atrocyaneum sp. nov. (J holotype); 123–124 – C. (C.) brevepilosum sp. nov. (J holotype); 125–126 – C. (C.) brevepilosum orientale subsp. nov. (J holotype); 127–128 – C. (C.) brevepilosum maritimum subsp. 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).