Thagria intorta, 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 : 54-57

Thagria intorta , sp. nov.

( Plate 1I , Figs. 57–64 )

Length. Male 7.00 mm; female unknown.

External morphology. Medium size, slender species. General color dark brown to black with ivory to yellowish markings on pronotum, mesonotum and forewings ( Plate 1I ); face ivory with black markings on lateral margins of clypeus and clypellus, contiguous from basal half of clypeus to apex of clypellus, lora and gena suffused with dark markings. Head narrower than pronotum, anterior margin broadly rounded; crown broad, about as wide as eye width, produced slightly distally beyond anterior margin of eyes, lateral margins slightly convergent basally, disk about even with level of eyes; eyes large, semiglobular; pronotum slightly longer than median length of crown, surface bullated; mesonotum large, about 1 ½ times longer than pronotum; forewings typical; clypeus long, broad at basal half, lateral margins constricted near middle, tapered to narrow, truncate apex; clypellus short, narrow, base flat.

Male genitalia. Pygofer in lateral view with caudoventral margin produced to short, broad lobe, caudodorsal margin with 1 pair of short, digitate lobes ( Fig. 57 ), in dorsal view digitate lobes curved ( Fig. 58 ); segment X ventral processes absent; aedeagus symmetrical, long, about ¾ as long as ventral paraphysis ( Figs. 59, 60 ); ventral paraphysis asymmetrical, in dorsal view lateral margins slightly sinuate, apex curved laterally with retrorse apical spine and 2 sharp, lateral subapical spines unequal in length, distal spine smaller ( Figs. 59, 60 ); style moderately long, reaching to near midlength of ventral paraphysis, broad in basal ¾, attenuated apically ( Figs. 61, 62 ); connective typical; dorsal connective in dorsobasal view narrowly U-shaped, stem absent, attached distally to membranous base of segment X ventral process ( Fig. 63 ); subgenital plate typical, long fine setae scattered on lateral margin, tuft of long setae apically ( Fig. 64 ).

Material examined. Holotype male. LAOS: Phongsaly prov., Ban Sano Mai , 19–26 V. 2004 ,1150 m., 21°21’N – 102° 03’E; P. Pachlatcho, leg., Collection Moraviske Museum, Brno. ( BRNO)

Etymology. The name is descriptive for the apex of the ventral paraphysis.

Remarks. This species is similar to quadrata Freytag in characters of the ventral paraphysis and can be separated by configuration of apical spines, fewer in number (3 vs. 4), by absence of segment X ventral processes and by numerous markings on the pronotum, mesonotum and forewings (absent in forewings of quadrata ).

Figures

PLATE 1. A–H. Thagria, dorsal habitus. (A) Thagria aenigmatis, sp. nov., holotype; (B) Thagria asperitas, sp. nov., holotype; (C) Thagria biretrorsa, sp. nov., holotype; (D) Thagria colorata, sp. nov., holotype; (E) Thagria coniunctionis, sp. nov., holotype; (F) Thagria constanti, sp. nov., holotype; (G) Thagria fidelitas, sp. nov., holotype; (H) Thagria freytagi, sp.

FIGURES 57–64. Thagria intorta, sp. nov. (57) pygofer, lateral view; (58) pygofer caudodorsal processes, dorsal view; (59) aedeagus and ventral paraphysis, dorsal view; (60) aedeagus and ventral paraphysis, lateral view; (61) style, dorsal view; (62) style, lateral view; (63) dorsal connective and base of segment X; (64) subgenital plate, lateral view.