Thagria longicatilla, 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 : 60-63

Thagria longicatilla , sp. nov.

( Plate 2C , Figs. 80–85 )

Length. Male 7.50 mm; female unknown.

External morphology. Medium size, slightly robust species. General color light brown with translucent spots on forewings. Crown yellow; eyes black; pronotum light brown anterior half, brown reticulations in posterior half; mesonotum light brown with dark brown triangular spot near each lateral angle; forewing light brown with 4 translucent spots subapically, apex translucent ( Plate 2C ); face light yellow, 2 broad, longitudinal stripes on clypeus. Head narrower than pronotum, obtusely rounded; crown broad, wider than eye width, produced distally about 1/3 its entire median length, disk depressed, forming slight carina anteriorly, lateral margins nearly parallel, convergent in basal 1/6; eyes semiglobular; pronotum short, about as long medially as median length of crown; mesonotum slightly longer than median length of pronotum; clypeus long, slightly narrow, lateral margins excised near antennal sockets; clypellus short, base slightly narrower than apex of clypeus, not inflated.

Male genitalia. Pygofer in lateral view with long narrow caudoventral lobe, caudodorsal margin with pair of prominent processes, basal half very broad with distinctive, subbasal ventral spine, apical half tapered to sharp point, toothed subapically ( Figs. 80 ); segment X with paired exposed ventral processes (apex broken off) ( Fig. 81 ); aedeagus symmetrical, long, reaching to about midlength of ventral paraphysis ( Figs. 82, 83 ); ventral paraphysis symmetrical, broad in basal half, narrow in distal half in lateral and dorsal views, toothed apically, base with pair of prominent spines ( Figs. 82, 83 ); style very long, reaching to near apex of ventral paraphysis, inflated apically in lateral view ( Fig. 83 ); connective typical; dorsal connective in dorsobasal view broadly V-shape, stem not apparent, rami attach to base of ventral processes of segment X ( Fig. 84 ); subgenital plate atypically long, narrow with numerous long, microsetae setae on distal half of lateral margins ( Fig. 85 ).

Material examined. Holotype male. INDONESIA: Sulawesi Utara, Dumoga Bone National Park, Paniki Trail (240 m.), X. 1985, Station 036, Project Wallace, Leg R. Bosmans & J. Van Stalle, I.G. n.:26.977 ( IRSNB)

Etymology. The name of the species is descriptive for the long subgenital plate.

Remarks. From T. sarawakensis Nielson to which it is most similar in male genitalia features, longicatilla can be distinguished by the ventral subbasal spine on caudodorsal processes of the pygofer (absent in sarawakensis ), by the very long subgenital plate and by the translucent markings on the apical 1/3 of the forewings (absent in sarawakensis ).

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 80–85. Thagria longicatilla, sp. nov. (80) pygofer and segment X ventral process (broken off distally); (81) pygofer caudodorsal processes and segment X ventral processes (broken off distally); (82) aedeagus and ventral paraphysis, dorsal view; (83) style, aedeagus and ventral paraphysis, lateral view; (84) dorsal connective, dorsobasal view; (85) subgenital plate, lateral view.