Three new species of Platyderus from South Italy (Coleoptera: Carabidae: Sphodrini)
Author
Guéorguiev, Borislav
text
Zootaxa
2009
2268
41
51
journal article
10.5281/zenodo.190888
e8ebdec5-6c28-47c0-921d-0ce8e4456ae0
1175-5326
190888
Platyderus vignai
new species
(
Figs. 5–6
,
9
,
15, 18–19
, Table 1)
Platyderus dalmatinus
Miller, 1880
: Binaghi in
Magistretti, 1955
: 23
,
Fig. 2
.
Platyderus dalmatinus
Miller, 1880
:
Magistretti, 1965
: 421
.
Type
material
.
HOLOTYPE
: male, labelled “Monte Gargano
17.4.1907
legit M. Hilf Coll. O. Leonhard.” / “coll. Dr. J. Fodor” (
HNHM
).
PARATYPES
, a total of
2 males
and
2 females
:
1 male
, labelled “Monte Gargano
11.4.1907
legit M. Hilf Coll. O. Leonhard.” / “coll. Dr. J. Fodor” (
HNHM
);
1 female
, labelled “Monte Gargano
25.6.1907
legit M. Hilf Coll. O. Leonhard.” / “coll. Dr. J. Fodor” (
HNHM
);
1 female
, labelled “M. Gargano M. S. Angelo IV. 0 7. A. Kniz” / “
Pl
.
v.
depressus
” / “Museum Leiden
Platyderus
.
Pl
. (s.str.)
ruficollis
Marsh.
v.
roitundatus
Chaud. Det
:” (
NNM
);
1 male
, labelled “Prom. Gargano Selva Umbra 23/
31.V.1948
G. Binaghi” / “sp. n. prope
minutus
” / “
dalmatinus
ssp.
garganicus
Binaghi” (
MSNG
).
Type
locality
.
Italy
, Apulia Region, Foggia Province, Gargano Mountain.
Diagnosis
. This species is distinct from any other one from the Apennines by intervals of elytra with very fine punctuation, the three inner intervals of elytra with stronger lustre and reduced microsculpture (elytra of males with reduced microsculpture throughout), different structures of medial lobe of aedeagus (laterally widest in apical third, dorsally and ventrally with two prominent forward and aside laterodorsal lobes and apex not visible from above; see
Figs. 5
,
9
,
15, 18
) and the copulatory piece of endophallus.
Description
. A micropterous
Platyderus
species (
Fig. 19
), with distinct isodiametric microsculpture on labrum (in both sexes) and on outer intervals of elytra (in females). Colour reddish-brown to dark brown; antennomeres, palpomeres and legs paler. Lustre of tegument stronger in males, faint in female. Size measurements and ratios are shown in Table 1.
Head round, dorsal surface impunctate. Eyes moderately big, flat, not prominent. Labrum straight or slightly emarginate anteriorly. Mandibles shorter than half length of head (with mandibles). Antennae pubescent from article 4; article 11 and most part of one 10 exceeding posterior margin of pronotum. Disc smooth, frontal impressions shallow, foveate, shortly and obliquely ended backward. Pronotum subcordiform, widest before middle. Lateral, anterior (excluding medial part) and posterior margins beaded. Sides convex towards apex, straight or slightly convex towards base; anterior margin emarginate; posterior margin convex near angles, emarginate in middle. Basal impressions well-marked, linear or sublinear.
Hind
angles round but their tips more or less traceable. Disc flat, midline distinct, not reaching both anterior and posterior margin; punctuation in basal part varied (from faint to more punctate in scattered groups along lateral borders, within and around basal impression). Elytra subdepressed, widest in middle third, slightly narrower at apical third, tightly coalesced along suture. Shoulders well-marked, obtusely angulate, not denticulate. Basal bead complete; scutellar striae and scutellar SP present; elytral striae impunctate, deeper in basal part and more superficial apically, all reaching basal margin; intervals flat, with very fine punctuation.
Hind
wings reduced. Pro-, meso- and metasternum smooth; anterior and internal margins of metaepisternae of equal length. Abdomen smooth. Legs relatively long and slender.
Male genitalia (genitalia of
3 specimens
studied): Median lobe of aedeagus in lateral view thinner basally, widest in apical third, apex slightly curved ventrally (
Figs. 5
,
9
); same dorsally and ventrally narrow, relatively long, with two distinct prominent forward and aside laterodorsal lobes, apex dorsally not visible from above (
Figs. 15, 18
). Parameres depicted on
Fig. 6
. Copulatory piece convex laterally, ventrally without protruding lobe anteriorly (
Figs. 5
,
15
).
Chaetotaxy: interval 3 of each elytron with three SP (first SP closer to or in stria 3, third SP closer to or lying in stria 2, situation of middle SP varies).
FIGURE 19.
Platyderus vignai
sp. n.
, male paratype, photograph of habitus.
Sexual dimorphism
. Males with strong lustre and reduced microsculpture on elytra throughout. Females with strong lustre and reduced microsculpture only on three inner intervals of elytra; all other intervals with distinct microsculpture and faint lustre (thus giving darker colour of female elytra).
Etymology
. Dedicated to Prof. Dr. Augusto Vigna Taglianti for his important contributions to the faunistics and systematics of the Italian and European
Carabidae
.
Notes
. In 1965, Magistretti cited
Platyderus dalmatinus
from the Gargano Mt. as listing three records: “Monte Sant’Angelo”, “Montenero”, and “Foresta Umbra” (
Magistretti 1965: 421 1
). For this reason, one male and two females of the typical
P
.
dalmatinus
from
Montenegro
(“Radostak Paganetti”) have been compared with
P
.
vignai
sp. n.
It was found out that the aedeagus, left paramere and copulatory piece of both taxa are completely different. Besides,
P
.
vignai
sp. n.
possesses the pronotum superficially but very clearly punctate close to lateral and basal margins as well as within and around the basal impressions, the lustre of tegument is stronger, and the pronotum scarcely wider than long, whereas
P
.
dalmatinus
lacks punctures close to lateral and basal margins of pronotum and within and around the basal impressions, the lustre of tegument is weaker and the pronotum much wider than long. Most probably,
P
.
dalmatinus
has to be removed from the checklist of the Italian fauna.