INSECTS OF MICRONESIA Coleoptera: Platypodidaeand Scolytidae'

Wood-Platypodidae and Scolytida e
hairlike pubescence distinguish this species from the other Micronesian repr esentatives
of the genus.
19. Cryphalomorphus pumilus Wood, n. sp.
Female: Length 1.1 mm., 2.2 times as long as wide; color brown.
Frons evenly convex from epistoma to vertex, surface reticulate and sparsely, rather
coarsely punctured; vestiture inconspicuous.
Pronotum about equal in length and width ; sides almost straight and subparallel on
basal half, rather narrowly rounded in front ; anterior margin armed by six serrations,
median pair somewhat larger ; summit at middle; anter ior area finely asperate; posterior
and lateral areas dull, reticulate, rather coarsely, sparsely punctured; short vestiturevisible
only in asperate area.
Elytra about 1.4 times as long as wide, 1.4 times as long as pronotum; sides almost
straight and subparallel on basal two-thirds , rather broadly rounded behind; striae not
impressed, punctures rather large and deep; interstriae narrower than striae, rather smooth
and shining, punctures fine, rather indistinct , in uniseriate rows. Declivity steep, convex ;
striae and interstriae narrower than on disc, interstrial punctures very feebly granulate.
Vestiture consisting of rows of erect, rather widely spaced, interstrial scales, each scale
about four to five times as long as wide ; scales almost entirely confined to declivital area .
Male: Unknown.
Holotype, female (CM), north west slope, Mt . Lasso, Tinian , beating vegetation,
May 4, 1945, Dybas.
DISTRIBUTION: S. Mariana Is. (Tinian).
This species is readily distinguished from other Micronesian representative s
of the genus by the convex frons , by the reticulate and punctured posterior and
lateral areas of the pronotum , by the rather smooth and finely punctured elytral
interspaces, and by the scalelike elytral bristles .
20. Cryphalomorphus nanulus Wood, n. sp.
Female: Length 1.2 mm. (paratyp es 1.1-1.3 mm.), about 1.3 times as long as wide ;
color dark brown.
Frons convex, moderately impressed just above epistomal margin , with a rather obscure,
short, transverse elevation above impression ; surface reticulate, rather coarsely and
closely punctured; vestiture inconspicuous.
Pronotum about equal in length and width; sides almost straight and subparallel on
basal half, rather narrowly rounded in front; anterior margin armed by eight serrations
of about equal size; summit at middle, anterior area rather finely asperate ; posterior areas
with a few very fine rounded granules immediately behind summit, deeply, closely, rather
coarsely punctured in remaining areas ; vestiture short, hairlike .
Elytra about 1.4 times as long as wide, 1.4 times as long as pronotum; sides almost
straight and subparallel on basal two-thirds, rather broadly rounded behind; striae not
impressed , punctures rather large and deep ; interstriae as wide as striae , rather smooth
and shining, punctures fine, rather deep, very close, in rath er definite rows. Declivity steep,
convex ; striae and interstriae narrower than on disc, striae more strongly impressed ,
interstrial punctures feebly granulate. Vestiture consisting of moderately abundant minute
interstrial scales on declivity; and rows of longer, erect, interstrial setae on both disc and
declivity, becoming scalelike on declivity, each scale about four times as long as wide.
Male: Similar to female in all respect s, except slightly smaller .
Holotype, female (CM), Mt. Tagpochau, Saipan, 375 m., Feb . 18, 1945,
Dybas; allotype, male (CM), same data. Paratypes (CM , eNC, BISHOP):