Coctilelater minimus from Brazil (Pará) is described and illustrated. This new species is mainly characterized by small size and coloration pattern.Coctilelater minimus sp. nov., coletado no Brasil (Pará) é descrita e ilustrada. Essa espécie é caracterizada principalmente pelo pequeno tamanho e pela coloração geral do corpo

ROSA, Simone Policena

Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)

36 Rosa
Revista Brasileira de Entomologia 53(1): 36-37, março 2009
Simone Policena Rosa1
The Neotropical genus Coctilelater was described by Costa
(1975) to include two species, C. corymbitoides (Candèze,
1900) and C. sanguinicollis (Candèze, 1878), which were
described in Pyrophorus Billberg, 1820, a genus which
comprised all bioluminescent Agrypninae. Coctilelater was
included in the tribe Heligmini Costa, 1975 (pre-occupied name,
replaced by Cleidecostini Johnson, 2002) with several other
species closely related to bioluminescent agrypnines, but
without bioluminescent organs. In a cladistic analysis of the
Pyrophorini (Rosa, 2007) Coctilelater is among the
descendants of the most recent ancestor of Pyrophorini and
the absence of bioluminescent organs is due to the loss of
this character. In fact, at least C. corymbitoides has a pair of
yellow nebulous spots on the pronotal posterior margin similar
to the bioluminescent organs of some Pyrophorini. However,
until now, there is not any report of the luminescent emission
capability in that species.
Coctilelater species are mainly characterized by small size
(6.0-12.9 mm), subserrate antennae, small eyes and mandibles
without subapical tooth. The purpose of this work is to describe
Coctilelater minimus sp nov., from Brazil (Pará). The types are
deposited in the Museu Paraense Emílio Goeldi (MPEG) and
Museu de Zoologia da Universidade de São Paulo (MZSP).
Coctilelater minimus sp. nov.
(Figs. 1–9)
Etymology. Latin: minimus = the smallest; in reference to the
relative size of the species.
Description. Male (Fig. 1). Body narrow, parallel-sided,
weakly convex, densely covered with fine, short, dense and
semidecumbent yellowish setae. Integument bright, head,
antennae and prosternum dark brown to black; pronotum,
hypomera and epipleurae yellow; elytra and legs light brown,
ventral pterothorax and abdomen light brown slightly darker
Description of Coctilelater minimus sp. nov.
(Coleoptera, Elateridae, Agrypninae)
1Museu de Zoologia da Universidade de São Paulo, Avenida Nazaré 481, 04263-000 São Paulo-SP, Brazil. simonepr@usp.br
ABSTRACT. Description of Coctilelater minimus sp. nov. (Coleoptera, Elateridae, Agrypninae). Coctilelater minimus
from Brazil (Pará) is described and illustrated. This new species is mainly characterized by small size and coloration
pattern.
KEYWORDS. Amazonian Forest; bioluminescence; Brazil; click beetles; Neotropical Region.
RESUMO. Descrição de Coctilelater minimus sp. nov. (Coleoptera, Elateridae, Agrypninae). Coctilelater minimus sp.
nov., coletado no Brasil (Pará) é descrita e ilustrada. Essa espécie é caracterizada principalmente pelo pequeno tamanho
e pela coloração geral do corpo.
PALAVRAS–CHAVE. Bioluminescência; Brasil; Floresta Amazônica; Região Neotropical; vaga-lume.
than elytra. Total length: 6.0 – 6.8 mm; elytra 3.4 times longer
than prothorax; humerus 1.0 – 1.1 wider than prothorax.
Head. Frons concave, rectangular (1.3 times wider than
long) with punctation strong, dense and umbilicate. Frontal
carina complete, weak; frontoclypeal region steeply declivous
to base of labrum, 5 times wider than long. Antennae with 11
antennomeres, weakly serrate from antennomere IV, surpassing
the hind angles of pronotum on the antennomere XI;
antennomere III 0.8 times as long as the II; antennomere IV 2.2
times longer than III. Eyes small, Indices of eye prominence
ca. 0.32 (ventral) and 0.24 (dorsal). Mouthparts directed antero-
ventrally. Labrum strongly sclerotized, semielliptical, strongly
punctate with long setae. Mandibles with latero-dorsal face
coarsely punctate, with long setae; inner margin without a
subapical tooth and base with a row of short setae. Maxilary
palpi 4-segmented, last segment securiform. Labial palpi 3-
segmented, last segment securiform.
Prothorax (Fig. 2). 1.1 times as wide as long, parallel-sided,
lateral margins entirely carinate. Pronotum slightly convex;
homogeneously punctate, punctation of medium size, dense.
Fore angles of pronotum acute; hind angles flat, elongate,
slightly divergent, weakly unicarinate. Hypomera (Fig. 2)
glabrous on the posterior third; anterior 2/3 densely pilose
with punctation of medium size, dense and umbilicate; posterior
margin with two small spines. Notosternal suture straight.
Prosternum (Fig. 2) elongate, produced forwards to form “chin
piece”; homogeneously punctate, punctation of medium size,
dense and umbilicate.  Prosternal process with a weak
subapical tooth. The length of the subsequent area to the
tooth corresponds to 10% of the total length of the process.
Scutellum pentagonal and abruptly elevated above the
level of mesoscutum. Mesoventrite (Fig. 3) slightly sloping up
posteriorly, with anterior articulating surfaces grooved and
divided in two parts, one ventral and the other dorsal, the last
visible beyond the ventral part; ventral part curved, sloping
down outwards. Mesoventral cavity deep, approximately 2.4
37Description of Coctilelater minimus sp. nov.
Revista Brasileira de Entomologia 53(1): 36-37, março 2009
times longer than mesocoxal diameter with borders parallel-
sided convergent between mesocoxae. Floor of mesoventral
cavity with a median, short and narrow groove densely lined
with short, golden setae above an elongated, narrow and shiny
median band. Mesepisternun (Fig. 3) with a circular depression
on the anterior margin, which is carinate posteriorly. Mesocoxal
cavities slightly traverse, oblique, closed by mesepimeron and
mesepisternum; mesotrocantin exposed. Metaventrite finely
punctate, punctation moderately dense and umbilicate, denser
on lateral margins; discrimen long. Metacoxal plates well
developed, slightly oblique, gradually narrowed outwards.
Elytra. Striae with a row of strong and dense punctation;
interstices flat, finely and densely punctate; parallel-sided up
to apical third then tapering to apices conjointly rounded.
Abdomen gradually tapering apicad; punctation fine,
moderately dense, larger and denser on lateral margins and on
last ventrite. First abdominal sternite entirely membranous.
Tergite VIII  (Fig. 9) evenly sclerotized, densely covered with
microsetae, with a few long and stout setae on latero-distal
and distal margins. Sternite VIII (Fig. 8) partially membranous;
transverse, proximal margin straight, posterior margin notched
at middle, with short setae latero-posteriorly. Sternite IX and
tergite X fused basally; sternite IX (Fig.7) elongate, acute at
apex; apex with elongate stout setae. Tergites IX and X (Fig. 6)
partially fused, tergite IX with anterior margin straight,
posterior margin bilobate with several microsetae and a few
elongate stout setae latero-posteriorly; tergite X covered with
microsetae.
Legs narrow and pilose. Femur and tibia compressed
laterally, tibial apex with two small and subequal spurs and a
row of spiniform setae on outer and inner margins; tarsomeres
simple, ventrally densely pilose. Tarsal claws simple, with one
strong elongate setae arising from the outer flat portion and a
few ones finer and shorter on lateral and dorsal surfaces;
empodium slightly sclerotized with two strong setae.
Fig. 1. Coctilelater minimus sp. nov. Dorsal habitus of male, total
length 6.8 mm.
Received 29/04/2008; accepted 22/09/2008
Figs. 2–9. Coctilelater minimus sp. nov. 2, prothorax (lateral); 3,
mesothorax (latero-ventral); 4, 5, aedeagus (ventral, dorsal); 6, tergite
IX and X; 7, sternite IX; 8, sternite VIII; 9, tergite VIII.
0.5 mm 0.5 mm
0.1 mm
0.1 mm0.1 mm
2 3
4 5
6 7
8
9
Aedeagus (Figs. 4, 5). Phallobase wider than long with
anterior margin emarginated at middle, connected to parameres
by a transparent membrane. Parameres with apex obliquely
truncate with latero-dorsal carina, with short setae ventrally
and one elongate seta dorsally; dorsal median bases
articulated to dorsal sclerite of penis through a median process
notched at middle. Penis with dorsal and ventral sclerites;
dorsal sclerite with strongly curved basal struts 0.25 as long
as its total length; lateral margins almost straight, tapering to
apex; ventral sclerite well developed, tapering to apex.
Holotype (male). BRAZIL. Pará: Serra Norte, N1- Floresta , 31.X
– 2.XI.1985, J. Dias coll., malayse trap (MPEG). Paratypes.  BRAZIL.
Pará: Serra Norte, N1- Floresta , 31.X – 2.XI.1985, F. F. Ramos coll.,
malayse trap, 1 male (MPEG); same locality, M1-Mata, 25 – 28
.X.1985, W. França coll., malayse trap, 1 male (MZSP).
Taxonomic discussion. Females of Coctilelater minimus
sp. nov. are unknown. This species is similar and sympatric to
C. sanguinicollis; both are narrow and parallel-sided. However,
C. minimus is the smallest species and can be distinguished
from the other ones of the genus by the color pattern of body,
the longer antennae and the flatter weakly carinate posterior
angles of the pronotum.
Acknowledgments. To Orlando Tobias Silveira and Roberta de Melo
Valente (MPEG) for the loan of the material and the paratype retained.
To Fundação de Amparo à Pesquisa do Estado de São Paulo for Research
Grant 07/56202-0.
REFERENCES
Costa, C. 1975. Systematics and evolution of the tribes Pyrophorini
and Heligmini with description of Campyloxeninae, new subfamily
(Coleoptera, Elateridae). Arquivos de Zoologia 26: 49–191.
Rosa, S. P. 2007. Análise filogenética e revisão taxonômica da
tribo Pyrophorini Candeze, 1863 (Coleoptera, Elateridae,
Agrypninae) . Tese (Doutorado). Instituto de Biociências da
Universidade de São Paulo. Departamento de Zoologia. xii + 240p.


Descrição de Coctilelater minimus sp. nov. (Coleoptera, Elateridae, Agrypninae)

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Descrição de Coctilelater minimus sp. nov. (Coleoptera, Elateridae, Agrypninae)

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