Paleotelmatoscopus, a proposed new genus for some fossil moth flies (Diptera Psychodidae, Psychodinae) in Eocene Baltic amber, with description of a new species
Author
Curler, Gregory R.
0000-0002-6052-4960
Mississippi Entomological Museum, Mississippi State University, 100 Old Highway 12, P. O. Drawer 9775, Mississippi State, MS 39762 - 9775, USA. gcurler @ gmail. com; https: // orcid. org / 0000 - 0002 - 6052 - 4960 & Research Collaborator, Smithsonian Institution
gcurler@gmail.com
Author
Skibińska, Kornelia
0000-0002-5971-9373
Institute of Systematics and Evolution of Animals Polish Academy of Sciences, Sławkowska street 17, 31 - 016 Kraków, Poland. yukisiak @ gmail. com; https: // orcid. org / 0000 - 0002 - 5971 - 9373
yukisiak@gmail.com
text
Zootaxa
2021
2021-02-16
4927
4
505
524
journal article
8080
10.11646/zootaxa.4927.4.2
0aa851eb-552a-43c4-b4dd-1dcc0a1297df
1175-5326
4543045
77145FDD-2036-4794-8336-9735F017E1BE
Pericoma speciosa
Meunier, 1905
Pericoma speciosa
Meunier, 1905
, p. 244
.
Diagnosis
. Species known only from Eocene Baltic amber. Male with the following combination of character states: head capsule with antennal scape and pedicel globular, flagellomeres fusiform (
Fig. 25
); wing profile ovate, with bluntly pointed apex (
Figs. 25–26; 28
).
FIGURE 25.
Photomicrograph of
Pericoma speciosa
Meunier, 1905
, lectotype male [Z2726/GZG BST 6177], lateral view. Scale bar: 0.25mm
Description. Male.
Eyebridge comprised of three facet rows; labellum bulbous, conspicuous; palp with segments cylindrical, nondescript; scapus globular, slightly larger than pedicel; pedicel globular; flagellomeres uniform in shape, fusiform, twice as long as wide; ascoids not visible in specimen; Thorax without remarkable characters; legs approximately equal in length, with proportions of femora, tibiae and tarsi of fore-, mid- and hindleg roughly equal; wing with C nearly twice as thick compared to longitudinal veins; radial fork placed slightly apical to medial fork. Terminalia with gonostylus straight, slightly inflated at base, evenly tapered from inflated part to apex; surstyli moderately elongate, slightly curved dorsally, inflated at base, without noticeable tapering from base to apex; cluster of more than 10 tenacula inserted dorsoapically.
FIGURES 26–28.
Photomicrographs of 26.
Pericoma speciosa
Meunier, 1905
, male, frontal view [MZ 17325]. 27. Female, lateral view [LACM 340462]. 28. Male abdomen and left wing, dorsal view [MZ 17325]. Scale bars: 0.50mm
Type material.
A male specimen originally examined by
Meunier (1905)
numbered Z2726 (
GZG
.BST-06177) is here designated as
lectotype
.
Other material examined.
See
Table 1
and the corresponding folio in Morphobank: http://morphobank.org/ permalink/?F897. An additional female specimen, probably congeneric with
P. speciosa
, is placed in a separate folio in Morphobank: http://morphobank.org/permalink/?F907
Comments.
Generic classification of this species is currently inadequate, as it is not
Pericoma
, but also can not be confidently assigned to another genus or described as new. Few specimens are available for study and the
lectotype
male shows only a lateral view of the genitalia. Unfortunately, a second male specimen (MZ17325) with ovate wings and fusiform antennal flagellomeres agreeing to
P. speciosa
can only be tenusouly identified as such. The eye bridge is obscured and genitalia is visible in partial dorsoventral view. Additional specimens of this type are needed to clarify the genus and species-level taxonomy.