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Manual of the New Zealand Coleoptera (Volume pt. 1-2) online

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more slender than, but nearly as long as, the second ; sixth obconical,
shorter than fifth ; club large, rather loosely articulated, its basal joint
longer than broad, obtriangular, the next shorter, sub-obtriangular, the
terminal joint largest, obtuse. Head subovate ; labrum very transverse,
emarginated, and ciliated ; epistome emarginated in front, with raised
margins ; eyes large, prominent, their greatest bulk above, narrowed
below. Prothorax convex, margined, transversal, narrowed anteriorly ;
its apex bisinuated or emarginated, the base with a slight sinuation at
each side of the middle. Scutellum triangular. Elytra (in the typical
species) very convex, obovate, considerably narrowed posteriorly,
broader than the thorax, and rather more than twice its length.

Legs long and rather slender ; femora somewhat compressed ; tibia
straight, spinose, with rows of short spines ; tarsi elongate, pilose under-
neath ; second joint and fifth longest, about equal, fourth shortest ;
claws toothed at base ; anterior tarsus with the four first joints obtri-
angular ; front tibia with hooks at apex.

Front coxa contiguous. Meso sternal process triangular, elevated in
front only, and forming an almost linear projection between the inter-
mediate coxae ; metasternum a little elevated at the middle, straight
behind, except where it is slightly produced between the hind coxae.
Abdomen with six segments, the last small. Epipleurce attenuated
behind, projecting below the body.

NOTE. The above description is from specimens in my own collec-
tion, agreeing tolerably well with White's specific description, but his
generic diagnosis is so meagre and inaccurate (for instance, he says the
antennae are apparently eight-jointed) that I thought it better to re-
describe the insect. The genus is placed by Lacordaire with the
Amarygmides, owing, no doubt, to his having been misled by the
characters given by Mr. White.

147- R. modestus, White; Voy. Er. Terr., Ins., p. n.
Head, thorax, scutellum, under-side and legs black; elytra of a
deep metallic green, with ten longitudinal, finely punctured striae, the
marginal not reaching the base, those nearest the suture deepest ; head
in front of eyes, with two impressed dots, above very finely punctured ;
thorax with the side-margin somewhat hollowed above, hind-margin
with two distant impressed points.

NOTE. No size is given ; my specimens, when set out, measure 2 J
lines in length by i J in breadth. The elytral striae do not always attain
the base, those on the disc are the most shallow, and the interstices are
punctated ; the prothorax is finely and distantly punctured ; the legs
and palpi are piceous, the body is finely pilose underneath ; and the
colour of the body is variable, sometimes exhibiting a reddish hue.

148. R. pedinoides, White; Voy. Er. Terr., Ins., p. 12.
Bronzy black ; elytra with ten longitudinal strise, rather deeply
grooved, finely punctured and running up close to the base ; clypeus
straight in front ; thorax somewhat flattened on the sides, with two
distant impressed points behind.



OF NEW ZEALAND. 8 1

In this species the legs are shorter than in R. modestus, and the
elytra are^less attenuated behind.

New Zealand. (Under stones).

NOTE. The above is all the information given by White, so that the
name might with advantage be dropped into oblivion, as no one could
identify the insect without reference to the type in the British Museum.

149. R. incertus, n.s. Oblong-oval, only moderately convex,
shining, blackish-green, the side margins brownish, legs reddish,
with paler tarsi, palpi and antennae fuscous, club dull, with excessively
fine pubescence. Palpi stout, rather short ; the sixth antennal joint
short and broad. Head a good deal rounded ^anteriorly ; epistome
feebly emarginated, its margins elevated, leaving a depression at each
side in front \ its surface is finely and remotely punctured, and there
are two punctiform impressions near the middle in front of the eyes.
Prothorax transverse, moderately convex, with finely margined expla-
nated sides, it is narrowed in front, with rounded angles, and it is
emarginated at the apex ; its surface is moderately punctured, the dis-
coidal punctation much less apparent than the lateral, there are two
punctiform impressions in front of the middle, and two more obvious
and distant ones near the base. Scutellum punctated. Elytra oblong,
transversely convex, obtusely rounded behind and distinctly margined ;
each elytron bears ten rather strongly punctured striae, of which the five
inner approach the base; the interstices are very finely punctated.
Legs scarcely shorter than those of R. modestus.

Length, 3 lines ; breadth, i \.

Described from one example found near Whangarei Heads. It is a
much broader and less convex insect than the typical one, and, appa-
rently, closely allied to R. pedinoides, from which it differs (supposing
White's description accurate) in its longer legs and coarser sculpture,
the punctation of the elytral striae being coarser than that seen in R.
modestus.



150. R. Oblong"US, n.s. This species is of a decidedly more
oblong form than the preceding, with much larger elytra, which are
widest behind the middle and obtusely rounded behind; it is trans-
versely convex, with a comparatively small ovate head ; it is of a reddish-
brown colour, with the epistome and margins reddish, the legs are red,
the tarsi, palpi, and antennae are yellowish, and the club of the latter dull.
Head a little uneven but without well-defined depressions, closely
punctured, the margins plane, epistome feebly emarginated. Prothorax
relatively very short, about one-third of the length of the elytra,
bisinuated at the base and apex, much more strongly in front than
behind, moderately convex, rounded towards the front, and finely mar-
gined ; the slope towards the sides is gradual, so that there are no
marginal hollows ; its surface is rather densely and finely punctured, the
punctation least distinct on the middle, and with two distant fovese
near the base. Elytra long, slightly incurved laterally near the middle,
broader than the thorax, and finely striated, the striae with rather small

L



82 COLEOPTERA

punctures, and the interstices distinctly and closely punctated so as to
appear rugulose ; the margins are a little explanated toward* the apex.
Legs rather short. The fourth and fifth joints of the antenna are rather
short, almost obconical.

Length, 3^ lines ; breadth, if.

I found one mutilated individual at Tairua.



151. R. OpimuS, n.s. Dark shining green, the head and thorax
darkest, legs pitchy-red, palpi and antennae pitchy-brown, the club of the
latter dull and very finely pubescent. Head distinctly, but rather finely
and closely punctured ; epistome quite straight in front, with raised
anterior margin ; there is a rounded impression behind, and an irregu-
larly curved line in front of the eyes. Thorax transverse, finely mar-
gined, slightly rounded laterally and a good deal narrowed anteriorly ;
the apex is sinuously emarginate, and the base has an obtuse central
lobe and a sinuation at each side of it ; the front and hind angles are
rounded, the disc is moderately convex transversely, sloping gradually,
but leaving a broad lateral space, which, however, is not concave ; there
are two distant punctiform impressions near the base and a larger one
between them ; the discoidal portion is very finely and distantly punc-
tured, beyond it is much more coarsely and closely impressed. Scutellum
rather long, distinctly punctured and infuscate. Elytra convex, large,
widest behind, obtusely rounded posteriorly, with somewhat explanated
margins ; they bear finely punctured striae ; these are most evident near
the sides and apex, only the five sutural reach the base, and the inter-
stices are more distinctly punctated than is the case in R. incertus,
but the striae are much more finely punctured than in that species.
The legs are moderate, the inner side of the tibia are grooved, and the
second and fifth tarsal joints are about equal.

Under-side brownish-black, punctated, and finely pilose. Meta-
sternum a little elevated in the middle, terminating between the hind
coxae in a bifid process ; mesostermim rather depressed, with a narrow
process separating the intermediate coxse ; front coxae contiguous.

Length, 3! lines; breadth, z\.

The insect is larger and broader than R. incertus, and seems to me
to agree more accurately with the description of R. pedinoides. White,
than does the former. I received one specimen, quite recently, from
Captain Hutton, who found it at Queenstown, Otago.



Group SPHERIDIIDJE.



The two lobes of the maxilla coriaceous or sub-membraneous.
Second joint of maxillary palpi, more or less enlarged. Antennce. with
eight or nine joints. ProtJwrax of the same width as the elytra at the
base, narrowed anteriorly. Tarsi not natatorial ; the first joint of the
posterior very much longer than the others.



OF NEW ZEALAND. 83

Cyclonotum.

(Dej.) Erichson; Lacord. Hist, des Ins. Coleop., Tom. \.,p. 471.

Mentum transversely quadrate, sometimes concave in front. Ligula
bilobed, its lobes rounded and ciliated. Labial palpi short, their last
joint snorter than the penultimate, obtusely acuminate ; the maxillary
palpi moderate, their last joint a little larger than the preceding, sub-
cylindrical, obtuse at the end. Mandibles coriaceous, hairy inwardly,
bidentate at the extremity. Labrum concealed by the epistome, hollow-
ed and hairy in front. Head deflexed, orbicular, with the epistome
more or less truncated. Antenna nine-jointed ; basal joint rather large,
somewhat clavate, second sub-globular, joints three to six very short,
very compact, widening gradually, seven to nine forming a large, elongate,
loosely articulated club. Scutellum rather large, triangular. Elytra con-
vex, sub-hemispherical, or oblong-oval. Legs short, femora wide, tibiae
furnished with small spines, in rows ; tarsi short, a little compressed, the
first joint of the posterior a little longer than the three following joints
taken together. Mesosternum narrow, perpendicular, provided with a
blade behind, which, between the intermediate coxae, joins an analogous
metasternal one.

Body convex, sub-globular, oval or oblong.

152. C. marginale, Sharp; Entom. Mon. Mag., June, 1876,
p. 21. Nigrum, nitidum, sat convexum, pedibus rufo-piceis, antennis
palpisque rufo-testaceis ; crebre punctatum, elytris seriebus punctorum
apicem versus profunde impressis ; tarsis posterioribus brevibus, articulo
basali secundo longitudine sequali.

Long, corp., 4j mm.

Head closely and finely punctured, and also with some larger
punctures, which are most numerous and distinct at the sides behind
the eyes. Thorax short, of the form usual in Cyclonotum^ black, with
the margins rather more dilute in colour, rather closely and finely
punctured, and rather shining. Elytra shining black, with the lateral
margins pitchy, each with ten rows of coarse punctures, which are most
deeply impressed towards the apex, the interstices are finely and
sparingly punctured, the lateral margins much explanate. Prosternum
with a large process (which is acute at its apex) in the middle in front.

Mesosternal process stout, triangular, but with the sides depressed, so
that it appears almost linear. Middle of metasternum raised, the eleva-
ted part shining and sparingly punctured, limited by two lines converg-
ing towards the hind coxse, the sides densely and finely punctured
and quite dull. Legs short, pitchy, becoming more dilute towards the
tarsi; the inner (or upper) face of the hind tibia flat, shining, with a few
punctures, without any strise ; basal joint of the hind tarsus quite equal
to the second in length (indeed, when fully exposed, it is a little longer),
third rather shorter than second.

Sent from Auckland by Mr. Lawson.

This interesting species approaches in appearance to Cyloma law-
sonus ; compared with our European Cyclonota, it is aberrant in several



84 COLEOPTERA

respects, but as the extra-European allied species are numerous and but
little known, it would be premature to make a new generic name for it.

153. C. flavicorne, n.s. Oviform, rather short, convex, shining,
black, with the thoracic margins reddish ; legs red, palpi and antennae
clear yellow, with the club of the latter dull.

Antenna with an elongate basal joint, not greatly thickened apically
and as long as joints two to six taken together; second joint ovate-elongate,
nearly as long as the three which follow ; fourth and fifth short, trans-
verse ; sixth broader than fifth, nearly as long as the fourth and fifth
conjointly, club large, not very laxly articulated, not so long as the rest
of the antennae. Maxillary palpi elongate, not much shorter than the
antennae, the terminal joint longer than the third. Head ovate, slightly
convex; epistome truncated in front; distinctly, but neither very closely
nor coarsely punctured, with rather prominent eyes. Prothorax trans-
verse, apex emarginate, base rounded, with a slight sinuation at each
side of the middle, rounded laterally, and narrowed towards the front ;
its surface is very finely and rather distantly punctured, its punctation
much finer than that of the head. Scutellum moderate. Elytra convex,
more than twice the length of the thorax, finely margined, not at all
explanated ; each elytron bears ten rows of punctures, those on the disc
least distinct, the outer rows very coarse and not attaining the base ;
the interstices are punctured in very much the same way as the head,
much more coarsely than the throat. Legs moderate, the posterior 'tibia
on the inside with rather large, elongate, punctiform impressions ; the
second joint of the tarsus is not so long as the next three conjointly,
but twice as long as the third, the basal joint short, not much exposed.
The tarsi bear yellow hairs.

Length, 2j; breadth, nearly ij lines (set out).

I found two specimens at Tairua, one of which I sent to Dr. Sharp,
who, however, has not described it.

I 54- C. gibbOSUMl, n.s. This species is verysimilar to C. flavicorne,
being of the same colour and nearly the same form, but it may be at
once known by its very convex elytra, which, in C. flavicorne are not
more elevated at the suture than elsewhere, whereas, in this species, the
sutural portion is distinctly elevated, so as to appear humped when
viewed from the front ; the third antennal joint is not appreciably
longer than the fourth ; the punctation of the thorax is more distinct,
being nearly the same as that of the head ; and the apex of the elytra
is more obtuse ; these latter are sculptured as in the previously men-
tioned species.

Length, 2 lines ; breadth, i \.

I have but a single individual, which I found near Whangarei Heads.

155. C. frontale, n.s. Convex, short oval, moderately shining,
pitchy black, with the margins reddish, legs dark red ; antennae and
palpi testaceous, rather pellucid, except the club of the former, which,
owing to its excessively fine pubescence, is rather dull.

Labrum\zxgz< exposed, emarginated in front, finely punctated, and
reddish. Head subovate, subdepressed, moderately finely punctured,



UK NEW ZEALAND. 85

with two large, but indistinct, shallow impressions between the eyes,
which are not prominent ; epistome distinctly emarginated.

Prothorax convex, of the same form as that of the preceding species ;
its punctation very similar to that of the head, but a little finer.
Scutellum triangular, rather elongate. Elytra convex, quite twice the
length of the thorax, each with ten rows of punctures ; these are quite
distinct near the suture, are coarser near the sides and apex, and some
of the outer do not quite reach the base ; the interstices are much more
finely and rather closely punctured, so that the rows are very obvious ;
they are finely margined, but not dilated.

The maxillary palpi are rather stout, shorter than the antennae,
their last joint not longer than the penultimate. The basal joint of the
antennce. is not more than twice the length of the second, which is
stouter but scarcely longer than the rather elongate third joint, the latter
is nearly as long as the next two, these are stouter than the third, but
smaller than the sixth ; the club is rather longer than joints two to six
collectively.

The hind tarsus is stout, the basal joint is not much exposed, the
second is the largest, not much longer than fifth ; they are all clothed
with golden hairs ; the inner side of thejDOjsterior tibia bears some large
and other smaller punctures, th^-Jrfrrgernear the - middle, leaving an
almost smooth line near thp^uter edge ; the intermediate tibiae are
more coarsely sculpturep'^ihe anterior are punctated and somewhat
grooved near the outer^jdge.

The mesosternal /process is elevated but narrow ; the middle of the
metasternum is obtusely elevated and coarsely punctured.

Length, 2|// breadth, ij lines (set out).

I have five examples before me ; they were found near Whangarei
Harbour.

Oyloma.

Sharp.

I have not been able to refer to Dr. Shanes description of this genus,
but I have now before me a duplicate speciflln of one sent to him some
time ago, which he informs me is his Cyloma lawsonus.

The insect is somewhat similar in form to the Cydonota described
above, but the antennae are only eight-jointed ; the basal joint is sub-
cylindric and nearly as long as joints two to five ; the second is oviform,
rather narrower at the apex than at its base ; third slender at base, sub-
cylindrical, about as long as the second ; fourth short, sub-globular ; fifth
short, broader than the fourth ; club three-jointed, large, longer than
joints two to five, its basal joint smallest, longer than broad, the last
obtuse. Maxillary palpi moderate; second joint large, incrassated and
bent ; third and fourth about equal, the last sub-cylindric with the apex
obtuse. Eyes prominent ; mandibles rather long.

156. C. lawsonus, Sharp. This is a convex insect, of a
pitchy colour, with reddish margins ; the legs are pitchy red ; tarsi red ;



86 COLEOPTERA

palpi dark testaceous ; antennae reddish-testaceous, with an infuscate
club ; and there is usually an angular testaceous spot on each elytron
behind.

Head sub-depressed, rather large, with the epistome sub-truncate in
front ; its surface is rather closely punctured. Thorax very transverse,
of the form seen in Cyclonotum, with the sides margined, and its
punctation similar to that of the head. Scutellum triangular. Elytra
convex, about three times longer than the thorax, striated, the striae
obsolete on the disc, distinct elsewhere and punctured ; the interstices
are finely and closely punctured. The legs are moderate ; the inner
side of the hind tibia is grooved ; the second tarsal joint is the largest.

Length, if line (set out).

The species was first found, I suppose, by Mr. Lawson, of Auckland.
I found one at Tairua, and others near Whangarei Heads.



157. C. badium, n.s. Convex, oviform, widest in front of the
middle, of a pale testaceous brown colour, rather shining, with the
antennal club fuscous.

Labrum transversal, short, indistinctly emarginated. Head scarcely
convex, the sides in front of the eyes nearly straight, narrowed an-
teriorly ; epistome sub-truncated ; eyes moderate ; its surface with a
rather fine, dense punctation. Prothorax convex, very transverse,
hollowed near each side in front, the sides finely margined, and nar-
rowed towards the front, base sub-truncate, and its surface very finely
punctured. Scutellum triangular. Elytra convex, their side margins a
good deal explanated towards the apices, nearly three times longer than
thorax ; the disc is nearly smooth, but, towards the sides and apex, they
bear distinctly punctured striae, and their whole surface is finely punc-
tated. The legs are short and stout, the tarsi slender. The maxillary
palpi are much shorter than the antennae, their last joint longer than the
penultimate, and rather stout.

Length, i line.

Tairua. Two specimens in my collection.



158. C. altTllum, n.s. This is very similar to the preceding in
general appearance, but its colour is pitchy black, with the elytral and
thoracic margins reddish, as are the legs ; the palpi and antennae are
yellowish, with the club of the latter infuscate.

The/a#/ are stout, their last joint is longer than the third, and they
are nearly as long as the antennae ; the club of which is as long as all
the other joints collectively. The head is like that of C. badium, and
similarly sculptured. Prothorax convex, very transverse, considerably
rounded towards the front, and finely punctated. Scutellum triangu-
lar. Elytra rather convex, closely punctated, their striae obliterated
near the base, but distinct, and very obviously punctured elsewhere, and
with explanated margins.

Length, i J line.

Found near Whangarei Heads.



OF NEW ZEALAND. 87

FAMILY STAPHYLINIDES.

Mentum corneous, nearly always strongly transversal and entire.
Ligula membraneous, rarely horny; its paraglossae often distinct. Lobes
of the maxilla of variable form and structure ; the external often bi-
articulate. Maxillary /##/ with four joints, the terminal frequently very
small and aciculate ; the labial shorter, ordinarily tri-articulate. Elytra
usually not longer than the sternum, united when at rest by a straight
suture, and completely covering the under-wings. Abdomen very mobile,
composed of six or seven segments. Tarsi with a variable number
of joints ; terminated by simple claws.

Group ALEOCHARIDJE.

Prothoracic spiracles visible. Antenna inserted on the forehead at
the inner margin of the eyes. Labrum entire, without membraneous
border. Apical joint of the maxillary palpi very small, aciculate.
Without ocelli. Elytra leaving the abdomen entirely exposed. Abdomen
margined laterally, its seventh segment often indistinct. Anterior coxa
conical ; the posterior transversal. Tarsi with a variable number of
joints. A membraneous space underneath the prothorax.

Gyrophsena.

Mannerh. ; Lacord. Hist, des Ins. Coleop., Tom. ii.,/..43.

Mentum rather short, slightly emarginate in front. Ligula short,
rounded, entire, without paraglossae. Labial palpi bi-articulate, the first
joint cylindrical, the second a little shorter, slender, almost acuminate ;
the maxillary rather short, their second and third joints nearly equal.
Maxilla with their inner lobes membraneous inwardly, corneous ex-
ternally, obliquely shortened at the inner side, and furnished with
spiniform hairs ; the external somewhat longer, horny in the middle,
membraneous at the base and apex. Mandibles unarmed, covered by
the labrum. Labrum transversal, truncate in front. Head little narrower
than the prothorax, bent downwards. Eyes usually rather large, mode-
rately prominent. Antenna of variable length ; their two basal joints
somewhat elongate, sub-equal; joints four to eleven gradually incrassated.
Prothorax a little narrower than the elytra, transversal, its base rounded.
Elytra truncate behind. Abdomen oblong. Legs rather short, the
intermediate moderately distant at the base ; anterior tarsi with four,
the others with five joints, the basal joint of the posterior a little
elongated.

Body moderately elongate, rather broad, winged, more or less
smooth.

159. G. punctata, n.s. Antennce. moderate, the eleventh and
the two basal joints testaceous, the others obscure red ; third shorter
than second, longer than fourth, cylindrical; fourth obconical, narrower
than fifth ; tenth thickened, as well as the immediately preceding joints ;



88 COLEOPTERA

eleventh ovate, about as long as ninth and tenth. Head shining,
blackish red, with a punctiform impression on the vertex, and many
punctures along the inner side of each eye but not encroaching on the
smooth median space. Prothorax transverse, a little convex, finely
margined, widest in front, rounded towards its base ; there are two
smooth longitudinal spaces on the disc and three punctate linear spaces,
each consisting of two or more almost regular rows of punctures ; it is
shining dark brownish red in colour, and, like the head, destitute of
pubescence. Elytra broader than thorax, moderately punctured, their
pubescence cinereous ; they are a little glossy, dark chestnut red, with
the hind and side margins more or less piceous. Abdomen oblong,
castaneous-brown, not perceptibly punctate, and very sparsely pubes-
cent. Legs reddish.

Length, ij ; breadth, nearly |- line.

I have only one mutilated individual, which I found at Tairua. The
punctation of the thorax is distinctive.



Online LibraryThomas BrounManual of the New Zealand Coleoptera (Volume pt. 1-2) → online text (page 12 of 91)