Hainanmezira latiscutellata, Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2011
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( Fig. 1View FIGURES 1 – 6., photo 3,4)
Material examined. Holotype, 3, labelled. China, Hainan, Ledong / Jianfengling / 2009 IV 28 Zhang & Yang / ent. Mus. CAU, Beijing // Holotype 3 / Hainanmezira n. gen. / latiscutellata n.sp. / des. Bai,Heiss,Cai 2011 ( CAU); paratype: 1 Ƥ collected with holotype ( CAU); 1 Ƥ China, Hainan, Jianfeng / Chahekou / 217m / 2007 VIII 20 Bai XS / ent. Mus. CAU, Beijing ( EMIH); 131 Ƥ China, Hainan, Wuzhi montain / 2008 V 8 Bai XS / Ent. Mus. Imnu. Huhhot ( EMIH); They are designated and labelled accordingly.
Description. Male, brachypterous; colouration dark brown, surface of head thorax, mtg I+II and median elevation of tergal plate granulate.
Head. Slightly longer than width of head (22 / 21); genae produced over clypeus leaving a cleft; antenniferous lobes diverging anteriorly with blunt apex reaching 1 / 3 of antennal segment I; antennae 1.78 x as long as width of head (37.5 / 21); segment I thickest slightly bent at base, II –III more slender, II shortest and III longest, IV fusiform with pilose apex; eyes oval inserted in head; postocular lobes straight converging posteriorly toward collar; vertex granulate at middle with ovate smooth callosities laterally; rostrum arising from a slit-like atrium, as long as head, rostral groove deep with carinate lateral margins, closed posteriorly.
Pronotum. 2.6 x as wide as long (24 / 9); collar ring-like and carinate; lateral margins roundly converging anteriorly its anterolateral angles not reaching anterior margin of collar; disk with an inverted T-shaped groove flanked by 2 (1 + 1) ovate callosities and granulate ridges laterally; posterior margin elevated and sinuate.
Mesonotum. Consisting of a scutellum about 6 x as wide as long (29 / 5), roundly humped at middle and 2 (1 + 1) subtriangular wing pads laterally; these depressed on their inner angle, carinate and raised along exterior margin; slit-like metathoracic scent gland canals visible from above; posterior margin sinuate and fused to metanotum.
Metanotum. Round median elevation granulate nearly as high as mesonotal elevation, laterally sloping and smooth, then granulate; posterior margin sinuate fused to mtgI.
Mtg I+II. Fused to each other and to tergal plate without distinct sutures; mtg I forming transverse ridge at middle, this high as mesonotal- metanotal elevation, laterally sloping toward smooth depressed lateral parts; mtgII only slightly raised at middle, lateral parts with flat round callosities.
Abdomen. Tergal plate flat roundly elevated at mtg III –IV and around dorsal scent gland on mtg IV –V; apodemal impressions sourrounded by thin carinae; deltg II –VI laterally reflexed, deltg II+III fused all others separated by sutures; tergite VII raised medially for reception of pygophore.
Venter. As described for the genus, spiracles II –VI ventral and not visible from above, VII and VIII lateral and visible.
Legs. Unarmed, femora slightly attenuated at base and apex, tibiae cylindrical; claws with long setiform pseudopulvilli.
Genitalic structures. Pygophore conical with rugose surface; ptg VIII small, reaching of pygophore; the only male was not dissected for the study of parameres.
Female. Generally as male but of larger size and more ovate abdomen, its lateral margins evenly rounded; tergite VII raised posteriorly with two transverse ridges on posterior half, ptg VIII strongly transverse shorter than truncate tergites IX+X.
Measurements. Holotype: length 5.3 mm; length of antennae 1.87 mm; width of abdomen 2.55 mm; paratype Ƥ: Length 6.3 mm; length of antennae 2.0 mm; length of antennae / width of head 1.74; length of antennal segments I/II/III/IV = 11 / 7.5 / 13.5 / 8; width of abdomen across tergite IV 3.25 mm.
Etymology. From> latus <(Latin) wide, referring to the strongly transverse scutellum.
Distribution. So far recorded from Central Hainan on Wuzhishan and Jianfengling.
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