32 M. •W. NIELSON 



2 (i) Aedeagus with or without long processes, if present, on dorsal appendage only. 



never on ventral appendage (Text-figs 103, 141, 147) THARRA Kirkaldy (p. 34) 

 - Aedeagus with long processes on ventral appendage, never on dorsal appendage 



(Text-fig. 512) .... HARANTHVS gen. n. (p. 191) 



Genus NEOTHARRA gen. n. 



(Text-figs 64-72) 

 Type-species: Neotharra ventrospiculata sp. n. 



Small, slender leafhoppers. Similar in general habitus to Tharra. Colour fuscous with 

 ochre along middle of commissural line and costa of elytra; scutellum ochreous. 



Head narrower than pronotum; crown produced distally beyond proximal margin of eyes, 

 somewhat declivous anteriorly, broad apically, tapered basally, disk elevated above eyes; 

 ocelli small, near lateral margin of crown; eyes medium size, occupying about half the total 

 dorsal area of head; pronotum long, median length about as long as median length of head, 

 lateral carina dorsad of costal margin of elytra, surface minutely knobbed; scutellum large, 

 length exceeding median length of pronotum; elytra well developed, venation prominent, 

 outer anteapical cell large, about one-half length of middle anteapical cell, five long apical cells; 

 hind wings well developed; clypeus long, constricted medially; clypellus short, lateral margins 

 expanded apically. 



Male genitalia symmetrical; pygofer small with prominent process on caudoventral margin; 

 aedeagus a single appendage traversed by gonoduct and with small spines on shaft, articulated 

 basally with connective; gonopore terminal; style small, apex clawed; plate segmented sub- 

 basally, very narrow basally, broadly expanded at apical three-fourths. 



Female seventh sternum about twice length of penultimate segment, posterior margin 

 produced distally along middle. 



Neotharra is a monotypic genus and is closely related to Tharra in general habitus 

 and genitalic characteristics. The former can be easily distinguished from the 

 latter genus by the unipendulate aedeagus and the crown which is declivous 

 anteriorly. It is presently known from New Guinea. 



Neotharra ventrospiculata sp. n. 



(Text-figs 64-72) 



Length: <$ 5-00-5-20 mm, 9 5 '50-5-80 mm. 



Colour generally fuscous. Crown marked with fuscous band anteriorly and posteriorly, 

 interconnected by longitudinal fuscous line medially; eyes fuscous to deep ochre; pronotum 

 with ochreous band along anterior margin, fuscous below; scutellum ochreous; elytra fuscous 

 except for narrow fused ochreous band along commissural line and middle of costal margin; 

 face and venter light ochre. 



Head with anterior margin of crown declivous; crown produced beyond anterior margin of 

 eyes, striate radially, slightly carinate laterally, disk elevated above eyes; pronotum with median 

 length equal to median length of crown; scutellum large, median length greater than median 

 length of pronotum; clypeus long, broad basally, tapered apically, constricted near antennal 

 sockets, surface finely granulose; striate along anterior margin; clypellus long, lateral margins 

 expanded apically. 



Male pygofer in lateral aspect with very long process arising from caudoventral margin, 

 pygofer process lanceolate, extending beyond dorsal margin of pygofer with small spine 

 subbasally; aedeagus in lateral aspect a single appendage with a prominent ventral curved 



