Thagria trimaculata, NIELSON, 2013

NIELSON, M. W., 2013, <strong> New records of Antarctic and Sub-Antarctic sea anemones (Cnidaria, Anthozoa, Actiniaria and Corallimorpharia) from the Weddell Sea, Antarctic Peninsula, and Scotia Arc </ strong>, Zootaxa 3625 (1), pp. 1-105 : 71

Thagria trimaculata , sp. nov.

( Plate 2I , Figs. 124–131 )

Length. Male 6.90–7.00 mm; female unknown.

External morphology. Medium size, slightly robust species. General color ivory and dark brown. Crown ivory to yellow; eyes dark brown; pronotum and mesonotum yellow; forewings dark brown in basal and apical third, large ivory spot near middle and on each side in coastal area separated by dark brown stripe ( Plate 2I ); face entirely pale ivory, sometimes lightly embrowned medially. Head narrower than pronotum, anterior margin somewhat conical; crown broad, about as wide as eye width, produced about 1/3 entire median length, lateral margins convergent basally, slightly depressed medially; eyes large, semiglobular; pronotum large, about as long medially as crown, surface sparsely rugulose basally; mesonotum large, about as long medially as pronotum; clypeus long, broad, lateral margins nearly parallel; clypellus short, base broader next to clypeus, inflated, abruptly narrowed near middle, apex rounded.

Male genitalia. Pygofer in lateral view with caudoventral lobe moderately long, abruptly angulate apically, in lateral and dorsal views caudodorsal margin with paired short digitate processes ( Fig. 124, 126 ); segment X with concealed ventral process ( Fig.125 ); aedeagus symmetrical, long, nearly reaching base of subapical process of ventral paraphysis ( Figs. 127, 128 ); ventral paraphysis in dorsal view asymmetrical, broad in basal 2/3, constricted at apical 1/3, with long lateral subapical spine and short recurved apical spine ( Figs. 127, 128 ); style moderately long, reaching to about midlength of paraphysis, broad in basal half, very narrow in distal half ( Figs. 129, 130 ); connective typical; dorsal connective in dorsobasal view narrowly Y-shape, stem short, rami long, nearly parallel, attached distally to mesal side of ventral processes of segment X ( Fig. 125 ); subgenital plate with small tuft of long setae apically ( Fig.131 ).

Material examined. LAOS-NE, Hua Phan prov., 20° 12’ – 104° 01’E, Phu Phan Mt. , 1500–1900 m., 17 v.– 3vi.2007, Vit Kuban, leg. Entomological expedition, Laos, 2007, Moravian Museum, Brno, Czech Republic ( BRNO). Paratype male, same data as holotype ( MLBM)

Etymology. The name is descriptive for recurved apical process on the ventral paraphysis.

Remarks. This species is similar to several species with apical processes on the central paraphysis and is nearest to circumcincta (Jacobi) . From this species, trimaculata can be distinguished by the much longer and more robust, subapical lateral spine, by the shorter style and by the distinctive color patterns which are absent in circumcincta .

Figures

PLATE 2. A–H. Thagria, dorsal habitus. (A) Thagria intorta, sp. nov., holotype; (B) Thagria iuxta, sp. nov., holotype; (C) Thagria lobata, sp. nov., holotype; (D) Thagria longicatilla, sp. nov., holotype; (E) Thagria malenovskyi, sp. nov., holotype; (F) Thagria oldfieldi, sp. nov., holotype; (G) Thagria paraunca, sp. nov., holotype; (H) Thagria quadrimaculata, sp. nov., holotype.

FIGURES 124–131. Thagria trimaculata, sp. nov. (124) pygofer, lateral view; (125) pygofer base, dorsal connective and segment X ventral processes, dorsal view; (126) pygofer caudodorsal processes, dorsal view; (127) aedeagus and ventral paraphysis, dorsal view; (128) aedeagus and ventral paraphysis, lateral view; (129) style, dorsal view; (130) style, lateral view; (131) subgenital plate, lateral view.