Catalog of the genus Plocia Newman, 1842 (Cerambycidae: Lamiinae: Apomecynini) of the Philippines with the description of a new species from Davao De Oro Mindanao Island

Abstract

This paper presents the catalog of the genus Plocia Newman 1842 of the Philippines including a description of P. maglanai sp. nov. a new species from Davao De Oro Philippines. The Philippines has four species and three non-nominal subspecies of Plocia wherein majorly are mainly distributed in the Luzon region and two in Mindanao Island. New distribution records of Plocia diverseguttata s. str. Heller, 1924 is also noted.

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Baltic J. Coleopterol. 23(1) 2023
https://doi.org/10.59893/bjc.23(1).008 ISSN 1407 – 8619
75
Catalog of the genus Plocia Newman, 1842 (Cerambycidae:
Lamiinae: Apomecynini) of the Philippines with the descrip-
tion of a new species from Davao De Oro Mindanao Island
Milton Norman D. Medina, Eleuterio Jr. C. Avergonzado, Jules T.
Loguinsa, Monsur M. Macosang, Jenie Ann M. Panangcad
Medina M.N.D., Avergonzado E. Jr.C., Longuinsa J.T., Macosang M.M., Panangcad
J.A.M. 2023. Catalog of the genus Plocia Newman, 1842 (Cerambycidae: Lamiinae:
Apomecynini) of the Philippines with the description of a new species from Davao
De Oro Mindanao Island. Baltic J. Coleopterol., 23(1): 75 - 83
This paper presents the catalog of the genus Plocia Newman 1842 of the Philippines
including a description of P. maglanai sp. nov. a new species from Davao De Oro
Philippines. The Philippines has four species and three non-nominal subspecies of
Plocia wherein majorly are mainly distributed in the Luzon region and two in Min-
danao Island. New distribution records of Plocia diverseguttata s. str. Heller, 1924 is
also noted.
Key words: Beetles, new species, catalog, Philippine beetles
Milton Norman D. Medina.
1
Faculty of Agriculture and Life Sciences and University
Research Complex (URESCOM), Davao Oriental State University, Mati City,
Philippines;
Philippine National Museum, Ermita, Manila Philippines;
Orcid: https://orcid.org/0000-0001-6858-8048
Corresponding author:miltonnormanmedina@gmail.com
Eleuterio Jr. C. Avergonzado. Biology Program, Faculty of Agriculture and Life
Sciences, Davao Oriental State University, Mati City, Philippines;
Jules T. Loguinsa. Biology Program, Faculty of Agriculture and Life Sciences,
Davao Oriental State University, Mati City, Philippines;
Monsur M. Macosang. Biology Program, Faculty of Agriculture and Life Sciences,
Davao Oriental State University, Mati City, Philippines;
Jenie Ann M. Panangcad. Biology Program, Faculty of Agriculture and Life
Sciences, Davao Oriental State University, Mati City, Philippines.

Medina M.N.D., Avergonzado E. Jr.C., Longuinsa J.T., Macosang M.M., Panangcad J.A.M.
76
INTRODUCTION
The Philippines is an archipelagic country
that contains high species richness and en-
demism thus considered one of the mega-
diverse countries in the world (Myers et al.
2000; Suarez & Sajise 2010). The Ceram-
bycidae fauna in the Philippines is one of
the most diverse species in the world with
more roughly 1400-1500 species being
listed (Tavakilian & Chevillotte 2023) and
the presently described species constitutes
around 70% of the Cerambycidae fauna of
the archipelago (Vives et al. 2005). Hence,
hundreds more are waiting to be discovered
for Philippine fauna, particularly in unex-
plored mountains in Mindanao Island (Me-
dina et al. 2021a,b; 2022; 2023).
Davao de Oro, formerly known as Compo-
stela Valley, is a province in the Philippines
situated in the Davao region, occupying
Mindanao's south eastern section (PhilAtlas
2023). The province was covered by a total
land area of 4,666.09 square kilometers.
The province's terrain consists of flat, roll-
ing, hilly, and mountainous portions evenly
distributed throughout the area (National
Economic and Development Authority
2023). The province is part of the Eastern
Mindanao Biodiversity Corridor (EMBC), a
large old-growth secondary forest in East-
ern Mindanao which is considered as the
last frontier in terms of species diversity
and endemism in Mindanao Philippines.
Additionally, pairs of Philippine Eagles,
considered apex predators and critically
endangered species in the Philippines
(Pithecophaga jefferyi) were sighted in the
province particularly at Mt. Candalaga in
the municipality of Maragusan, proving the
province’s rich biodiversity and relatively
intact ecosystem (DENR 2022; PEF 2008).
Most of the province’s land area is convert-
ed into agricultural lands mostly banana
and coconut plantations. Despite several
threats to the forest ecosystems of Davao de
Oro, several endemic and new coleopteran
species were recorded for example in the
genus Metapocyrtus Heller 1912, e.i M.
dagtum Cabras et al. 2021, M. (O.) man-
saka Cabras et al. 2018, and M. kueli
Cabras et al. 2021. Some endemic species
of Glenea are also recorded in the province,
e.i G. versuta Heller, 1832 and G. albolin-
eata mindanaonisAurivillius, 1926 (Medina
et al. 2021b).
Apomecynini Thomson 1860, includes al-
most 1900 species distributed in 246 genera
in America, Africa, Asia, and Oceania
(Tavakilian & Chevillotte 2023). Plocia
Newman 1842 consists of 7 species and
subspecies (4 species and 3 non-nominal
subspecies) worldwide, six are endemic in
the Philippines, P. diverseguttata sensu
stricto Heller, 1924; P. diverseguttata al-
bopunctata (Breuning 1982); P. diversegut-
tata boholensis (Breuning, 1982); P. di-
verseguttata mindanaonis (Breuning 1982);
P. puncticollis Breuning, 1965; P. splen-
dens Hüdepohl 1995 and one species occur-
ring both in Taiwan and Philippines, P.
notata Newman 1842 (Tavakilian &
Chevillotte 2023). The genus is easily dis-
tinguished from other members of Apo-
mecynini for having a “conspicuous white
tomentation of the 7th antennal joint”
(Weigel & Skale 2021, p.354).
In Mindanao, there are two Plocia species
recorded, e.i P. diverseguttata sensu stricto
Heller, 1924, P. diverseguttata minda-
naonis (Breuning, 1982). One of the rec-
orded Plocia species, P. diverseguttata
mindanaonis (Breuning, 1982) is distribut-
ed in the Davao region specifically in Mt.
Apo, and the other species P. diverseguttata
sensu stricto Heller, 1924 is distributed in
Surigao and Bukidnon. However, there is
no record of Plocia species in the province
of Davao De Oro. Thus, Plocia maglanai
sp. nov. will be the first new species in the
province.

Catalog of the genus Plocia Newman, 1842 (Cerambycidae: Lamiinae: Apomecynini) of the Philippines …
77
This paper provides a list of Plocia in the
Philippines with the description of Plocia
maglanai sp. nov., a new species from Da-
vao de Oro, Mindanao, Philippines.
MATERIALS AND METHODS
Hand net and handpicking were employed
during the sampling at Sitio Maligaya, Ba-
ranggay Tagugpo, Pantukan Davao de Oro.
The specimens were killed using 70% ethyl
alcohol and temporarily stored in vials. The
collected specimens were deposited at
MMCP. Morphological characters were
observed under the Leica MZ 12.5 stere-
omicroscope. Habitus images were taken
using a Canon EOS 6D digital camera
equipped with an MP-E 65mm macro lens
mounted in Stack Shot macro rail automat-
ed with Helicon Remote version 4.3.0.w.
All images were stacked using Helicon Fo-
cus version 8.1.1 and processed using a
licensed Photoshop CS6 Portable software
version.
Measurements of the various body parts as
follows:
LB = length of body from antennal support
to apices of clothed elytra;
WH = maximum width across head from
the outer margin of a gena to that of anoth-
er;
LG = length of gena from upper margin to
lower margin;
LL = length of lower eye lobe from upper
margin to lower margin;
WL = maximum width across lower eye
lobe;
LP = length of pronotum from base to apex
along midline;
WP = maximum width across pronotum;
LE = length of elytra from the level of basal
margins to apices of clothed elytra;
WEH = width of elytra at humeri;
/separates different lines on a label; // sepa-
rates different labels.
All measurements are given in millimeters
(mm).
Comparative material and type specimens
are deposited in the following collections:
BMNH Natural History Museum, London.
EUB Ehime University and Ohbayashi
collection, Matsuyama.
MMCP Milton Medina Collections, Tagum
City, Philippines.
SNSD Senckenberg Naturhistorische
Sammlungen Dresden, Germany.
ZMB Museum fur Naturkunde–Leibniz
Institute for Evolution and Biodiversity
Science, Berlin
ZSM Zooloische Staatssammlung Des
Bayerischen Staates Munchen.
Species new distribution record*
CATALOG
Family: Cerambycidae
Sub-family: Laminae
Tribe: Apomecynini
Type species: Plocia notata (Newman,
1842)
Plocia diverseguttata sensu stricto Heller,
1924
Heller, 1924: 205; Breuning, 1949:19;
Breuning, 1960: 139; Breuning,1964:
79,80,302; Tavakilan & Jiroux, 2015: 78;
Weigel & Skale, 2021: 351.
Type information and deposition: Plocia
diverseguttata Heller, 1924, Holotype,
SNSD; Mimoplocia diverseguttata m.
plurinotata Breuning, 1964, Holotype,
SNSD; Mimoplocia diverseguttata di-
versenotata Breuning, 1964, Holotype,
SNSD.
Synonym: Mimoplocia diverseguttata m.
plurinotata Breuning, 1964; Mimoplocia
diverseguttata diversenotata Breuning,
1964

Medina M.N.D., Avergonzado E. Jr.C., Longuinsa J.T., Macosang M.M., Panangcad J.A.M.
78
Distribution: Philippines (Luzon: Caba-
lian. Mindanao: Surigao, Bukidnon, Linda-
bon, Gingoog*, Cateel, Davao Oriental*).
Plocia diverseguttata albopunctata
(Breuning, 1982)
Breuning, 1982: 141; Tavakilan & Jiroux,
2015: 78; Weigel & Skale, 2021: 353.
Type information and deposition:
Mimoplocia diverseguttata ssp. albopunc-
tata Breuning, 1982, Holotype, EUB.
Synonym: Mimoplocia diverseguttata ssp.
albopunctata Breuning, 1982.
Distribution: Philippines (Visayas: Leyte,
Cangtoktok).
Plocia diverseguttata boholensis (Breun-
ing, 1982)
Breuning, 1982: 141; Tavakilan & Jiroux,
2015: 78; Weigel & Skale, 2021: 353.
Type of information and deposition:
Mimplocia diverseguttata ssp. Boholensis
Breuning 1982, Holotype, EUB.
Synonym: Mimplocia diverseguttata ssp.
boholensis Breuning 1982.
Distribution: Philippines (Visayas: Bohol,
Bilar).
Plocia diverseguttata mindanaonis
(Breuning, 1982)
Breuning, 1982: 142; Tavakilian & Jiroux,
2015: 28; Weigel & Skale, 2021: 353.
Type information and deposition:
Mimoplocia diverseguttata ssp. Minda-
naonis Breuning, 1982, Holotype, EUB.
Synonym: Mimoplocia diverseguttata ssp.
mindanaonis Breuning, 1982.
Distribution: Philippines (Mindanao: Mt.
Apo, Lake Agko; Baclayon- Mainit Hot
Spring).
Plocia notata Newman, 1842
Newman, 1842: 292; Thomsom, 1864: 45;
Lacordaire, 1872: 610; Gemmainger &
Harold, 1873: 3103; Heyrovsky, 1935: 19,
20; Kano, 1939: 32; Breuning, 1949: 49;
Breuning, 1960:139; Breuning, 1964: 79;
Hua, 2002: 216; Tavakilian & Jiroux, 2015:
78; Barsevskis, 2017: 185; Weigel & Skale,
2021: 351.
Type information and deposition: Plocia
notata Newman, 1842, Holotype, BMNH;
Epaphra albicornis Heyrovsky 1935, Syn-
types (4), Prague National Museum.
Synonym: Plocia notata Newman, 1842;
Epaphra albicornis Heyrovsky 1935.
Distribution: Philippines (Luzon: Manila;
Mt. Makiling, Laguna).
Plocia puncticollis (Breuning, 1965)
Breuning, 1965: 182; Weigel & Skale,
2021: 353.
Type information and deposition: Parepi-
lysta (s. s.) puncticollis Breuning, 1965,
Holotype, ZMB.
Synonym: Parepilysta (s. s.) puncticollis
Breuning, 1965.
Distribution: Philippines (Luzon).
Plocia splendens (Hüdepohl, 1995)
Hudephol, 1995: 285; Tavakilan & Jiroux,
2015: 78; Weigel & Skale, 2021: 353.
Type Information and deposition:
Mimoplocia splendens Hudephol 1995,
Holotype, ZSM.
Synonym: Mimoplocia splendens Hud-
ephol 1965.
Distribution: Philippines (Luzon: Sibuyan;
Romblon Province)
Taxonomy
Plocia maglanai Medina sp. nov.
Fig. 1.

Catalog of the genus Plocia Newman, 1842 (Cerambycidae: Lamiinae: Apomecynini) of the Philippines …
79
Fig. 1. Habitus of Plocia maglanai sp. nov.: A. Dorsal, B. Ventral, C. Lateral, D. Frons.

Medina M.N.D., Avergonzado E. Jr.C., Longuinsa J.T., Macosang M.M., Panangcad J.A.M.
80
HOLOTYPE female: PHILIPPINES –
Mindanao, Davao de Oro / Pantukan / Brgy.
Tagugpo / VIII.28.2023 / 800 masl.
E.Avergonzado leg. / MMCP, printed on
red card. Type specimen will be deposited
at the Philippine National Museum (PNM).
PARATYPES: 2 females, same label as
holotype, MMCP. Female: PHILIPPINES –
Mindanao, / Compostela Valley, / Maragu-
san, / New Albay, 03.2017. / local collector
leg./ Specimen deposited at Daugavpils
University Beetles Collection (DUBC).
Description. Dimensions of holotype: LB:
11.5 mm. WH: 1.5 mm. LL: 0.8 mm. WL:
1.0 mm. LP: 2-.0 mm. WP: 2.5 mm. LE:
8.5 mm. WEH: 4.0 mm.
Adult female. Teguments in the Head,
pronotum, elytra, and legs are matte black;
antennae and underside of head are dark
brown. Head dorsally wider than long;
frons, vertex, genae with puncturations and
lateral sides covered with recumbent yel-
lowish pubescence; deeper puncturations at
frons arranged in random; dorsal median
side of vertex free of yellowish recumbent
pubescence; one black erect orbital setae;
base of frons lined with 3-4 semi-erect
black setae; genae lustrous, wider than
long; clypleus lustrous, glabrous, rectangu-
lar; mandible short robust at base, covered
with few long yellowish erect setae. An-
tennae short, reaching until apical third of
elytra, densely covered with semi-erect
short yellowish setae from scape to anten-
nomere XI; scape robust, normal without
apical cicatrix, apex rounded, a little longer
than head; pedicle slightly elongated; an-
tennomere III as long as antennomere IV;
basal half of antennomere III and IV cov-
ered with whitish pubescence; antennomere
VII fully covered with whitish pubescence.
Prothorax. Pronotum and Propleuron cov-
ered with deep puncturations; pronotum
wider than long, median line of pronotum
free of yellowish pubescence, lateral sides
of pronotum to pleuron covered with yel-
lowish pubescence in line with the yellow-
ish pubescence of the head, with few erect
black setae at propleuron. Prosternum cov-
ered with fine yellowish recumbent pubes-
cence, bottle-shaped in the middle.
Elytra twice wider than long, covered with
fine semi-erect and recumbent yellowish
and whitish pubescence with pronounced
yellowish recumbent pubescence at basal
third. Elytra densely covered with punc-
turations at the basal half, apical half is de-
void of puncturations. At least 4-5 visible
striae from elytral suture, gradually dimin-
ishing from the apical half towards apex.
With a distinct lateral band of whitish pu-
bescence at the middle in line with anten-
nomere VII (fully covered with whitish
pubescence). At least five longitudinal
bands of whitish pubescence scattered at
the apical third and elytral apex. Elytral
apex caudate with a pointed sutural spine
covered with semi-erect whitish and yel-
lowish pubescence.
Legs. Coxa, underside of tibia, profemora,
and mesofemora are covered with fine yel-
lowish recumbent pubescence; dorsal side
of tibia and tarsi with semi-erect whitish
and yellowish pubescence; basal half of
metafemora with whitish recumbent pubes-
cence, apical half with yellowish pubes-
cence. Claws simple, light brown, glabrous.
Mesepimeron, metepisternum, and lateral
sides of metasternum with deep punc-
turations arranged in random, covered with
yellowish recumbent pubescence, more
pronounced at the lateral sides of metaster-
num. Mesepisternum devoid of punc-
turations, densely covered with fine black
and yellowish pubescence. Mesosternum
quadrangular, almost cube-liked, with fine
yellowish pubescence. Metasternum wider
than long, median line devoid of punc-
turations and yellowish pubescence with
prominent medial concavity. Abdominal

Catalog of the genus Plocia Newman, 1842 (Cerambycidae: Lamiinae: Apomecynini) of the Philippines …
81
ventrite I as long as wide as metasternum;
lateral sides of ventrites I to V densely cov-
ered with yellowish and bluish recumbent
pubescence; median plane of ventrites I and
II with very fine yellowish pubescence;
ventrites III and IV devoid of pubescence;
ventrite V with brownish setae with semi-
erect whitish setae at lateral side near the
apex.
Adult male. Unknown.
Differential diagnosis. The new species is
unique amongst the congeners of Plocia
spp. in the Philippines. It is distinct for hav-
ing no whitish or yellowish macules in the
elytra but having a transverse band of whit-
ish pubescence in the middle, and a head
including frons highly punctate. It is some-
what close to P. notata (Newman, 1842) for
having a whitish pubescence at antenno-
meres IV, but distinct from P. notata for
being two-toned tomentose at antennomere
III.
Etymology. Plocia maglanai sp. nov. is
named after Dr. Wenifredo Maglana, a
medical doctor and a conservationist who
dedicated his life to protecting watersheds
and natural reserves in Davao de Oro, Phil-
ippines.
Distribution. Philippines: Mindanao (Da-
vao de Oro, Pantukan, Compostela Valley).
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Accepted: 30.11.2023.