Review of the Neotropical genus Physiomorphus Pic (Coleoptera: Mycteridae: Lacconotinae), with description of the larvae of three species
Author
Pollock, D. A.
Author
Ide, S.
Author
Costa, C.
text
Journal of Natural History
2000
2000-12-31
34
12
2209
2239
http://www.tandfonline.com/doi/abs/10.1080/002229300750037875
journal article
10.1080/002229300750037875
1464-5262
4757083
Physiomorphus angustus
Pollock
sp. n.
(Figures 17, 34, 45±46, 58, 69)
HOLOTYPE
,, l labelled:`
BRAZIL
:
Mato Grosso
,
Sinop
,
Oct. 1973
M. Alvarenga’
, in
CMNH
.
PARATYPE
,, l labelled:`
BRAZIL
, ParaÂ,
BeleÂm
,
Benevides
,
Fazenda MorelaÃndia
,
3.viii.1992
; Myct. indet nr. 2; case 4a (adult 26)’, in
MZSP
.
PARATYPE
,, l labelled:`
BRAZIL
, ParaÂ,
BeleÂm
,
Benevides
,
Fazenda MorelaÃndia
,
3.viii.1992
; Myct. indet nr. 2; case 4a’, in
MZSP
.
NEPIONOTYPE (in 70% ethanol) and paranepionotype (slide mounted numbered as`lam. Myct. 03’), labelled:`
Brasil
, ParaÂ,
BeleÂm
,
Benevides
,
Fazenda MorelaÃndia
,
03.viii.1992
, Exp.
MZSP
col.’, both in
MZSP
.
NEANOTYPE (in 70% ethanol, associated with prepupal exuviae, nr. 30), labelled:`
Brasil
, ParaÂ,
BeleÂm
,
Benevides
,
Fazenda MorelaÃndia
,
03.viii.1992
, Exp.
MZSP
col.’ in MZSP.
Derivation of speci
W
c epithet
This new species of
Physiomorphus
is named for the relative narrowness of the body.
Diagnosis, adult
This species may be separated from its congeners by the following diagnostic combination: last maxillary palpomere only very slightly expanded distally; lateral margins of pronotal disc subparallel; pronotal depressions very shallow, joined together; penultimate tarsomere without conspicuous ventral lobe.
Description, adult
Characters of
Physiomorphus
, with the following speci®c features:
Body
elongate (TL/GEW 2.77±3.51), subparallel-sided.
Head
. Scape relatively short, submoniliform; antennomere 2 short, moniliform, about half length of scape; antennomere 3 sub®liform; antennomeres 4±10 moniliform, 9±10 slightly serrated; antennomere 11 short, distinctly narrowed beyond midlength; last maxillary palpomere very slightly expanded distally, not distinctly securiform.
Pronotum
distinctly wide (GPW/PL 1.55±1.64), narrower to slightly wider than head (GPW/GHW 0.93±1.13); lateral margins of pronotal disc subparallel, slightly narrowed at anterior margin; discal depressions very shallow and poorly de®ned, joined medially; punctation somewhat irregular and moderately ®ne, not umbilicate; setation very sparse.
Elytra
moderately convex, without suggestions of longitudinal costae; vestiture very sparse, not obscuring moderately dense and coarse punctation; apical binding patch slightly visible dorsally.
Abdomen
. Sexual setae long, piceous to black, at least half length of V2, directed posteriorly, almost subparallel to surface of V2; male genitalia with paramere with moderately deep sinuation, beginning slightly distal of midlength.
Colour
. Entire body piceous with ventral mouthparts and elytra slightly lighter than rest of body.
Diagnosis, mature larva
Length:
12.3 mm
, width:
1.8 mm
.
Abdomen
. A pair of longitudinal asperities on terga II±IV and on sterna II±V; asperities curvate mediad; tergal asperities with 7±9 small teeth; sternal asperities with 8±14 teeth. Urogomphal plate (®gure 20) with scattered setae; a dorsal pair of short setae on median anterior region; anterior angles rounded and slightly produced; lateral margins almost straight, converging slightly posteriad, a pair of tubercles near anterior angle; posterior margin slightly concave, bearing a bicameral pit on median region, not produced close to urogomphi; urogomphi short, apices acute.
Diagnosis, pupa
Length:
6.6 mm
, width:
1.7 mm
. Similar to pupa of
P
.
subcostulatus
but diOEering by absence of the dorsal setae on the abdomen.
Other material examined
BRAZIL
.
ParaÂ
:
BeleÂm
,
Benevides
,
Fazenda MorelaÃndia
,
03.viii.1992
, Exp.
MZSP
leg., one mature larva, one (
MZSP
).