Fossil Cantharidae from the Cretaceous Burmese (Kachin) amber of the Patrick Müller collection, and taxonomic information
Author
Fanti, Fabrizio
Author
Müller, Patrick
text
Baltic Journal of Coleopterology
2022
22
2
331
380
journal article
10.5281/zenodo.13203160
1407-8619
13203160
Burmomiles parisii
sp. nov.
(
Fig. 1
)
Holotype
.
Female
, adult specimen in a
Burmese
(
Kachin
) amber piece:
Catalog
number
SNHM6004 in
the
Staatliches Naturhistorisches Museum Braunschweig
(ex
Müller’s
collection number:
BUB4457
).
Type locality.
Myanmar
:
Kachin state
, Myitkyina District, Hukawng Valley.
Type horizon.
Lowermost Cenomanian (98.79 ± 0.62 Ma), midCretaceous.
Differential diagnosis.
The genus
Burmomiles
is characterized by short elytra that do not reach the last abdominal segments, tarsal formula 5 5 5, elytra with shallow but dense punctuation arranged in striae, a pronotum enlarged and rounded at sides, the head rounded, and the unequal maxillary palpomeres with the last segment securiform (Fanti et al. 2018), all features present in the new species described here. The new taxon differs from other
Burmomiles
by its much more transverse pronotum. Furthermore, the other
Burmomiles
have pectinate antennae.
Burmomiles laticollis
Yang, Geiser & Liu, 2021
has a similar pronotum, but it has shorter elytra (less punctated) and pectinate antennae (
Yang et al. 2021
).
Description.
Adult, alate, robust. Female, for the shape of last sternite and short antennae. Entirely dark brown. Body length: 3.0 mm.
Head rounded behind the eyes, partially covered by the pronotum, surface with shallow punctation. Eyes prominent, subelliptical, inserted laterally to the head. Mandibles falciform. Maxillary palps 4 segmented, with the last palpomere securiform. Labial palps 3 segmented with the last palpomere securiform. Antennae 11 segmented, filiform, inserted in the upper part of the head and not particularly close to the eyes, short, slightly surpassing the humeral zone of the elytra; scape clubshaped, very robust; antennomere II short, very wide and globular; antennomere III narrower than previous one and globular; antennomeres IV–X subequal, robust, swollen, longer than antennomeres II–III together; antennomere XI elongate, pointed apically; all antennomeres with setae. Pronotum very transverse, wider than head, anterior margin straight and slightly bordered, posterior margin almost straight, sides slightly curved and slightly bordered, surface completely flat with pubescence (just perceptible). Scutellum triangularshaped with rounded apex. Elytra wider than pronotum, robust and wide, rounded at apex, not covering the last abdominal segment, wider at humeri, surface presenting a coarse and wide punctation gathered in evident striae visible for the entire elytral length. Metathoracic wings covered by elytra, and not visible. Sternum subquadrate with almost straight posterior margin. Sternites transverse and wide, last two tergites as a caudal large appendage, last sternite rounded presenting two slender and divergent lobes (oviduct). Legs very robust and with short and fitted pubescence; coxae short, robust; trochanters elongated with rounded apex; femora slightly curved, sturdier than tibiae; tibiae thin, elongate, cylindrical and slightly flat apically, pro and mesotibiae as long as pro and mesofemora, metatibiae longer than metafemora, with a robust spur at apex. Tarsal formula 5 5 5; first tarsomere about 1.3 times longer than second; second tarsomere elongated; third tarsomere triangular, very slightly enlarged at corners; fourth tarsomere flat, wide, very slightly lobated at corners; fifth tarsomere very elongated, thin, slightly curved, slightly enlarged apically; claws simple, very long, apparently without tooth at the base (with the base slightly wider).
Fig. 1.
Burmomiles parisii
sp. nov.
in Burmese amber. A: Holotype, dorsal view; B: Holotype, ventral view.
Etymology.
Named in honor of Francesco Parisi (University of Florence,
Italy
), friend of the first author (Fanti).
Syninclusions.
Air bubbles, detritus, Hymenoptera (
0.7 mm
).
Remarks.
Piece of clear, golden amber that measures 11x10x
4.5 mm
. The inclusion is complete, but the pronotum and ventral side are not clearly visible.