Annamina xanthoptera Attems, 1937
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https://dx.doi.org/10.3897/zookeys.669.12561 |
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lsid:zoobank.org:pub:1C9D1511-C97C-4705-8FB7-FD5023118255 |
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https://treatment.plazi.org/id/49F81146-8328-4AA7-177C-902712D69B86 |
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scientific name |
Annamina xanthoptera Attems, 1937 |
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Annamina xanthoptera Attems, 1937 View in CoL Figs 1, 2, 3, 4
Type material.
NHMW: Lectotype ♂, NHMW 8936, designated herein, Tourane (= Danang), Lien Chieu, Dawydoff C. leg., 09.1931, Dawydoff/Attems 1936 don., Attems det. Paralectotypes: 4 ♂♂, 6 ♀♀, 3 heads, 3 posterior sections, several midbody sections, NHMW 8937, two slide preparations, NHMW3477, same data as lectotype. MNHN JA 108: 2 ♂♂, 3 ♀♀, Touranne (C. Annam), 18.IX.31 Lien-Chiên.
Lectotype designation was necessary so that the species is based on a complete male that fully matches the original description of A. xanthoptera by Attems (1937). Gonopods were removed and newly examined using one of the NHMW paralectotypes.
Diagnosis.
Differs from other members of the genus primarily by showing both the median lobe and the lateral process of the gonopod telopodite strongly microdenticulate-serrate. See also Key below.
Description.
Measurements (mm): Males (both NHMW and MNHN): length 24.9-29, width of midbody prozonae 1.6-1.9, width of midbody metazonae 2.35-2.6. Females (both NHMW and MNHN): length 28-31, width of midbody pro- and metazonae 1.8-2.1 and 2.5-3.2, respectively.
General coloration after many years of preservation in alcohol apparently somewhat faded, rather uniformly light to castaneous brown, without a distinct pattern, sides lighter; telson, legs and ventral parts light brown to yellowish (Fig. 1). Clypeolabral region setose, setae becoming scattered between antennae; vertigial region with 2+2 setae; epicranial suture thin, superficial.
Antennae long, slender and moderately clavate, slightly extending back behind segment 3 (♂) (Fig. 1A, B) or 2 (♀) when stretched dorsally; in length, antennomere 2 = 3 = 4 = 5 = 6> 1 = 7 (Fig. 1A, B). In width, collum = segment 3 = 4 <2 <head = 5-16 (♂); thereafter body gradually tapering towards telson on segments 17-19. Tegument generally smooth, prozonae finely shagreened, rear halves of metaterga mostly striolate; surface below paraterga microgranulate. Collum regularly rounded laterally; dorsum strongly and regularly convex, but paraterga directed ventrolaterad. Postcollum paraterga well-developed, mostly set high (at about 1/5 metazonital height measured from dorsum), subhorizontal; paraterga 2 lower than others, drawn both forward and caudad into rounded lobes, with a distinct lateral tooth in fore 1/4; following paraterga broadly and regularly rounded anterolaterally, likewise with a small, but evident tooth in fore 1/4; caudal corner subrectangular until segment 5, increasingly dentiform and well drawn caudad, but evidently projecting behind caudal tergal margin only in segments 17-19, nearly always rounded, spiniform and almost pointed only in segment 19; calluses narrow, demarcated by a complete, distinct, deep sulcus only dorsally and by a faint and somewhat incomplete one ventrally, the latter sulcus reaching only until fore lateral tooth; poriferous calluses only a little thicker than poreless ones (Fig, 1). Ozopores lateral, placed inside an elongated ovoid groove located just behind a vague tubercle at about rear 1/4 callus. Transverse metatergal sulci thin, shallow, faintly sinuate medially and beaded at bottom, nearly reaching bases of paraterga, present on metaterga 5-18 (Fig. 1). Stricture dividing pro- and metazonae thin and deep, ribbed at bottom down to paraterga. Axial line very faint, traceable in places on metaterga. Pleurosternal carina a small ventral lobule on segment 2, thereafter very faint, subtransverse, granulated ridges traceable caudally until segment 7 (♂). Epiproct (Fig. 1A) long, clearly flattened dorsoventrally, conical, emarginate at apex, subapical lateral papillae small. Hypoproct subtriangular, with a rounded apex, caudal 1+1 setae well-separated, not borne on knobs (as in Fig. 11A).
Sterna flat, sparsely setose, cross-impressions faint, without modifications other than a prominent, very high, narrow, triangular, truncate lobe between ♂ coxae 4 (as in Fig. 11B). Legs long, ca 2 times as long as midbody height, very slender in both sexes, with neither adenostyles nor ventral brushes; in length, femora> prefemora> tarsi> coxae = postfemora = tibiae (Fig. 1).
Gonopods (Figs 2-4) complex, telopodites stout. Coxite (cx) considerably shorter than telopodite, subcylindrical, densely setose distoventrally. Prefemoral (= densely setose) part (pf) short, set off from femorite (fe) by an oblique sulcus. Femorite (fe) voluminous, clearly flattened dorsoventrally, showing a prominent, spiculate-microdenticulate, mesal lobe (ml) and a smaller, rounded, hyaline, ventral lobe (vl); seminal groove running laterad along dorsal part of fe, distally detached near a subtransverse postfemoral sulcus (su) into a conspicuously short, flagelliform, coiled solenomere (sl). On ventral side, base of sl subtended by a small tooth (t) (= solenophore) devoid of membranous elements, t lying ventrally near base of a long, narrow, blade-shaped, apical process (a); the latter slightly curved laterad, with a rounded tip, much longer than a conspicuously serrate, slender, finger-shaped, lateral process (lp).
Comments.
Attems (1937, 1938) failed to indicate the number of specimens in the type series of A. xanthoptera while the only measurements he gave in the descriptions (width of pro- and metazona 1.8 and 2.5 mm, respectively) may have misleadingly been taken as concerning a single specimen. However, the type series is quite large and presently divided between the MNHN and NHMW collections. Moreover, the NHMW type material actually houses two different species of Annamina , most of which truly represents A. xanthoptera . The minor admixture, however, is described below as still another new species, the types being deposited in the NHMW.
A complete catalogue of references to A. xanthoptera is available in Nguyen and Sierwald (2013).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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