718 N. C. AGR. EXP. STA. BUL. 239 
Sibovia nielsoni, NEW SPECIES 
FiGuRE 588 
Length of male 4.5-6.3 mm, of female 5.8-6.6 mm. Head moderately 
produced, anterior margin narrowly rounded in dorsal view, median length of 
crown varying from slightly more than six-tenths to approximately eight- 
tenths interocular width, and from four-tenths to slightly more than one-half 
transocular width, crown with a very weak transverse concavity before ocelli, 
clypeus usually not flattened medially, transclypeal suture obsolete at middle. 
Pronotum with width approximately equal to transocular width of head, 
lateral margin slightly concave. Male pygofer short for genus, with posterior 
margin broadly and regularly convex, with a number of macrosetae of dif- 
ferent sizes located on apical half, plates extending posteriorly as far as 
pygofer apex; style extending posteriorly to or beyond midlength of con- 
nective; connective with stem much longer than arms; aedeagus without 
processes on shaft which is broader at base than at apex, in caudoventral view 
with sides gradually convergent to rounded apex; paraphyses much shorter 
than in S. occatoria (Say). Female abdominal sternum VII as in S. carahua, n. 
sp. (above). 
Boke 
FIGURE 588.—Stbovia nielsoni, n. sp. (c, d, h, from specimen from Waspuc River, 
Nicaragua; f, g, p, from Playas, Ecuador; e, 7, from Panama; q, s, from 
Bafios, Ecuador; h from lateral view): p, Paraphyses from caudoventral 
view; qg, r, aedeagus from lateral view; s, aedeagus from caudoventral view. 

oS 
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