A taxonomic revision of the genus Baldorhynchus (Di Marco & Osella, 2002) stat. n. (Coleoptera, Curculionidae, Entiminae)
Author
Bello, Cesare
Author
Osella, Giuseppe
Author
Baviera, Cosimo
text
Zootaxa
2016
2016-01-27
4070
1
1
101
journal article
31380
10.11646/zootaxa.4070.1.1
058a8983-7310-4a2a-ade4-66ed90de8a06
1175-5326
1054428
75CBEFC1-FFC8-4D35-857B-55DD2596BC8C
Baldorhynchus saccoi
Bellò & Osella
sp. n.
(
Figures 30, 30a, 30b, 30c, 30d, 30e, 30f
,
87
,
119
)
Type locality.
“Monte Pizzoccolo,
500 m
circa, Maderno, Brescia”.
Diagnosis.
A
Baldorhynchus
of small size belonging to the
B. kahleni
group. Within the species group, it is distinguished by the oblong conical rostrum (briefly conical in the other species), longer elytra (length/width ratio 2.1), and robust antennae having the last five segments moniliform or transverse. Punctation of the pronotum coarse, irregularly scattered, sparse and not deep. Punctation of the elytra small, isodiametric, deep and regularly arranged along the entire surface. Total length:
3.85 mm
. Elytra with length/width ratio 2.06. Pronotum length
0.78 mm
with length/width ratio 1.15.
Type series.
Holotype female: [transparent label with genitalia]// ♀ [white, printed]// "BS, Maderno, M. [onte] Pizzoccolo, m. 500 circa, ceduo latifoglie,
19. I. 1997
, Tagliap.[ietra] & Zan.[etti]" [white, printed]// “collezione Cesare Bellò” [green, printed] // "
Baldorhynchus saccoi
sp. n.
, Holotype, det. Bellò & Osella, 2015" [red, printed] (GOS).
Paratype
: " I,
Brescia
,
Val d’Archesane
, westl.
Palazzo
,
900 m
,
Hasel
wurzeln, 3. 11. ’89, leg.
Kahlen
" (
TLMF
): one female.
The
genitalia of both female
types
were examined
Holotype.
Female. Total length:
3.85 mm
. Rostrum strongly elongate and covered by yellowish pubescence; more twice longer than the head; dorsum convex; mesorostrum slightly gibbous; a dozen epistomal setae thin, curved, semi-erect. Antenna slightly robust and short with long, semi-erect, thin setae; scape clavate and robust as funicle. Scape length:
0.75 mm
; funicle length:
0.75 mm
. Scape length/funicle length ratio: 1.00. Funicle with club ratios as follows: 9: 6: 3: 3: 3: 4: 3: 22 (club); fusiform club with first segment flat, longest of last six funicle segments, at least twice wider than funicle. Head smooth on disc, short, conical.
Supraorbital area
partially covered by yellowish pubescence.
Vertex
width / mesorostrum width: ratio 1.60.
Vestigial
eyes present, visible, partially covered by yellowish pubescence. Pronotum (length:
0.78 mm
, width:
0.68 mm
, ratio: 1.15) sub-cylindrical, slightly sinuate at the base, longer than wide, wider in the anterior third; short golden erect seta inserted in center of hole; punctation not deep, different widths and not uniformly arranged; smooth central area on disc. Scutellum small, slightly excavated, triangular. Elytra convex, strongly elongate with high suture (length:
2.20 mm
, width:
1.07 mm
, ratio: 2.1), strongly rounded on sides, widest at middle. Punctation of striae slightly deep, isodiametric but of different widths, only some with a minute and short seta; interspaces between strial punctation regular and less wide than hole. Interstriae less wide than striae, flat, smooth with sparse, short and erect setae. Legs sligltly thin and elongate, with rather long golden setae. Femora clubbed and edentate. Tibiae with six/seven little toothlike tubercles on inner edge; protibia slightly curved in side view, metatibia and mesotibia straight. Sternite VIII with sides sub-rounded of lamina and with apical margin fused. Spermatheca with cornu developed, ramus and nodulus inconspicuous (
Fig. 26f
). Ovipositor weakly sclerotized, gonocoxites tapered, with short styli and several more or less long setae.
FIGURES 30–30f
—
Baldorhynchus saccoi
Bellò & Osella
sp. n.
holotype
♀
from “Monte Pizzoccolo,
500 m
circa, Maderno, Brescia”: 30—habitus, dorsal view (scale bar:
1 mm
); 30a—habitus, lateral view; 30b—rostrum, lateral view; 30cpronotum; 30d—elytra punctuation; 30e— funicle and club; 30f—spermatheca.
Variation.
The
paratype
is similar to
holotype
only differing in size. Total length: 4.25. Elytra length 2.50 and elytra width 1.23: ratio 2.03.
Distribution.
See
Fig. 131
. Italian endemic. Known only from “Mount Pizzoccolo” from 500 to 900 meters of elevation.
Etymology.
Named after our friend and colleague Francesco Sacco for his photos that illustrate this work so well and as a gift for valuable collaboration.
Ecology/Phenology.
The
holotype
was collected sifting the leaf litter in a coppice while the
paratype
was collected sifting roots of
Corylus
sp..
Reproduction.
Probably amphigonic like the other species of this group.