Colasposoma (Colasposoma) brevepilosum orientale, 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 : 472-473

Colasposoma (Colasposoma) brevepilosum orientale subsp. nov.

( Figs. 63–65 , 73 , 125–126 , 142 )

Type locality. Yemen, Socotra Island, Homhil protected area, 12°34′27″N, 54°18′32″E.

Type material. HOLOTYPE: J, ‘ Yemen, Soqotra Is., Homhil protected area, 28.-29.xi.2003, N12°34′27″ E54°18′32″, 364 m [GPS], leg. P. Kabátek [printed white label]; Yemen – Soqotra 2003 Expedition; Jan Farkač, Petr Kabátek & David Král [printed white label] ; Holotypus Colasposoma (Colasposoma) brevepilosum ssp. orientale n. S. Zoia det. 2012 [printed red label]’ ( NMPC).

Description. Habitus as in Figs. 125–126 ; body length of holotype 5.7 mm.

Body dark brown with some bronze metallic reflections; head, pronotum and elytra dark bronze, metallic; labrum dark brown, mandibles black, palpi yellowish; antennomeres reddish, antennomeres VII–XI dull; legs dark brown with some metallic reflections beneath.

Frons feebly convex, finely pubescent, with median glabrous impression between eyes; punctation moderately strong, punctures closer and partially confluent near eyes and in median impression of frons; surface between punctures convex, shiny; clypeus not separated from frons, punctate, distally with fine microreticulation and finer punctures, distal border concave. Antennomere I nearly 1.6 times longer than II and nearly twice as wide, feebly bent on outer side; antennomere II two times longer than wide; antennomere III nearly as long as antennomere I and nearly 4 times longer than wide; antennomeres IV and V subequal to III; antennomere VI shorter than V; antennomeres VII–X dull, feebly widened, VII little longer and wider than following ones; antennomere XI 1.3 times longer than the X, nearly of the same width.

Pronotum 2.1 times wider than long (2.8 × 1.3 mm); convexity of surface interrupted before distal border by transversal impression; sides arched and margined throughout, widest in basal fourth; base wider than distal border; angles with small tooth with bristle, distal angles visible from above; surface with moderately strong punctation, punctures stronger and partially confluent on sides; small transversal zone without punctation on basal third of disc; pubescence fine, relatively short, central area of pronotum almost bare.

Scutellum 1.5 times wider than long, rounded, punctured, finely pubescent.

Hypomeron shiny, with relatively strong and spaced punctation, almost bare; distal bor- der of prosternum regularly concave throughout, finely margined; prosternum divided from hypomeron by evident notosternal suture, strongly impressed distally; prosternum in midline little longer than wide between coxae, punctate, with long whitish pubescence. Mesoventrite one third narrower than prosternum between procoxae, its distal edge feebly incised in middle, surface finely punctured, pubescent; mesepimera not punctured, bare. Metaventrite transversely rugose, finely punctured on sides, with long and thin pubescence; metacoxae as spaced as mesocoxae; metanepisterna nearly 4 times longer than wide, punctate, with fine and close pubescence.

Elytra 1.2 times longer than wide at humeri (4.0 × 3.2 mm); surface almost regularly convex, with subhumeral impression on sides and impression laterally on basal third of the disc; elytral punctation relatively fine and close, stronger on sides; surface between punctures smooth, flat on disc, with some micropunctures; pubescence short and thin on disc, more evident on sides. Epipleura wide at base, gradually tapering from base to elytral apices, strongly angulated with elytral surface, not punctured, almost bare, smooth, shiny.

Legs (holotype damaged, only two legs are present: Fig. 125 ) moderately long; femora unarmed, feebly swollen; tibiae straight, protibial surface rough in distal half ( Figs. 73 ); protarsomeres I–II feebly widened. Claws of protarsi bifid in about one third of their length, with inner tooth short.

Dorsal side of abdomen poorly sclerotized; pygidium sclerotized, its apex rounded and pubescent; abdominal sternites roughly punctured and pubescent.

Aedeagus as in Figs. 63–64 ; two very large tracheae enter the median lobe from basal hood.

Female unknown

Differential diagnosis. A subspecies of C. (C.) brevepilosum sp. nov. characterized by stronger punctation of frons and pronotum and different shape of the apex of aedeagus.

Etymology. The specimen studied was collected in the easternmost area of Socotra.

Figures

Figs. 59–69. 59–62 – Colasposoma (Colasposoma) b. brevepilosum sp. nov. (59–60: J holotype; 61–62: J, Firmihin): 59 – aedeagus, apex, dorsal view; 60 – aedeagus, lateral view; 61 – tegmen; 62 – ventral sclerite of sternite IX. 63–65 – Colasposoma (Colasposoma) brevepilosum orientale subsp. nov. (J holotype): 63 – aedeagus, apex, dorsal view; 64 – aedeagus, lateral view; 65 – ventral sclerite of sternite IX. 66–69 – Colasposoma (Colasposoma) brevepilosum maritimum subsp.nov.(66–67, 69:J holotype; 68:J, wadi Ayhaft): 66 – aedeagus, apex, dorsal view; 67 – aedeagus, lateral view; 68 – tegmen; 69 – ventral sclerite of sternite XI.

Figs. 70–75. 70–72 – Colasposoma (Colasposoma) brevepilosum brevepilosum subsp. nov. (70: J holotype; 71–72: ♀, Zemhon area): 70 – protibia and tarsus; 71 – spermatheca; 72 – elytron, lateral view. 73 – Colasposoma (Colasposoma) brevepilosum orientale subsp. nov. (J holotype): protibia and tarsus. 74–75 – Colasposoma (Colasposoma) brevepilosum maritimum subsp. nov. (74: J holotype; 75: ♀, wadi Ayhaft): 74 – protibia and tarsus; 75 – spermatheca.

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).