Hybristodryinus zaifui Chen , Olmi & Perkovsky, 2021
|
publication ID |
https://dx.doi.org/10.3897/jhr.81.57792 |
|
publication LSID |
lsid:zoobank.org:pub:6E3EC3E6-F3EF-4AA5-9B2A-10C4D719CE19 |
|
persistent identifier |
https://treatment.plazi.org/id/6455A84B-B0A6-42E6-818E-F7B4F6586BE8 |
|
taxon LSID |
lsid:zoobank.org:act:6455A84B-B0A6-42E6-818E-F7B4F6586BE8 |
|
treatment provided by |
|
|
scientific name |
Hybristodryinus zaifui Chen , Olmi & Perkovsky |
| status |
sp. nov. |
Hybristodryinus zaifui Chen, Olmi & Perkovsky sp. nov.
Figures 2 View Figure 2 , 3 View Figure 3
Diagnosis.
Female: macropterous, with disc of pronotum shaped as an isosceles triangle; notauli incomplete, reaching about 0.7 × length of mesoscutum (Fig. 2C View Figure 2 ).
Description.
Female. Macropterous (Fig. 2A, B View Figure 2 ); length 1.8 mm. Apparently completely brown-testaceous. Antenna clavate, apparently almost hairless; antennomeres in following proportions: 6:4:5:4:4:3.5:3.5:3:3:4; antenna about three times as long as head (37:12), reaching metapectal-propodeal disc. ADOs apparently present in antennomeres 6-10 (Fig. 2E View Figure 2 ). Flagellomeres longer than wide; antennomere 9 about three times as long as broad. Head excavated, apparently unsculptured; clypeus not visible; mandible not visible; face slightly concave; occipital carina complete (Fig. 2C View Figure 2 ); vertex without two longitudinal keels connecting lateral ocelli to occipital carina; occiput deeply excavated; eye normally bulging; ocellar ratio: POL:OL:OOL:OPL = 1:2:2:1; temple about twice as long as OOL (4:2); greatest breadth of lateral ocellus longer than POL (2:1); frontal line apparently complete; palpal formula probably 6/3 (labial palpus not distinct). Pronotum crossed by anterior deep transverse impression between anterior collar and disc; disc humped, apparently isosceles triangle shaped, not deeply medially longitudinally excavated; posterior collar absent; anterior surface of pronotum not sculptured by longitudinal striae; sculpture of disc not distinct; pronotum shorter than head (6:12); anterior collar of pronotum much shorter than disc (2:4); pronotal tubercle reaching tegula. Epicnemium not visible. Mesoscutum apparently unsculptured, longer than pronotum (10:6). Notauli incomplete, reaching about 0.7 × length of mesoscutum (Fig. 2C View Figure 2 ). Mesoscutellum apparently unsculptured, shorter than mesoscutum (4:10). Metanotum shorter than mesoscutellum (2:4), with sculpture indistinct. Metapectal-propodeal complex shorter than mesoscutum (5:10), with disc reticulate rugose, with areolae very broad, with posterior corners lamina shaped, strongly projected posteriorly (Fig. 2D View Figure 2 ); propodeal declivity not visible. Fore wing (Fig. 2F View Figure 2 ) apparenly hyaline, not darkened, with the usual venation of Dryininae ; pterostigma much longer than broad (10:2); second radial cell (2R1) open; stigmal vein (2r-rs&Rs) regularly curved; fore wing with usual three basal cells (C, R, 1Cu) clearly enclosed by pigmented veins. Hind wing not visible. Fore leg ratio: 7 (coxa): 5 (trochanter): 15 (femur): 9 (tibia):? (tarsus only partly visible); enlarged claw (Fig. 3A, B View Figure 3 ) slightly shorter than protarsomere 5; protrochanter very slender and long, with long and slender proximal stalk, broadened after half-way; protrochanter less than seven times as long as broad (5:1); protarsomere 3 produced into hook; rudimentary claw not visible; arolium not visible; enlarged claw apparently with one subapical tooth, with one row of lamellae (number of lamellae uncertain). Protarsomere 5 (Fig. 3B View Figure 3 ) with inner side not visible; lamellae of protarsomere 5 not visible. Mid leg ratio: 5 (coxa): 3 (trochanter): 13 (femur): 12 (tibia): 16 (tarsus). Mid trochanter short and broad. Hind leg ratio: 6 (coxa): 3 (trochanter): 18 (femur): 17 (tibia): 21 (tarsus). Metasomal petiole very short. Metasoma (excluding sting (Fig. 3C View Figure 3 )) longer than mesosoma (39:27). Tibial spurs 1/1/2.
Male. Unknown.
Material examined.
Holotype: female (CNN-HYM-MA 2017087), Myanmar: specimen in mid-Cretaceous Burmese amber (about 99 Ma). Obtained from a mine situated in Northern Myanmar, Kachin State, Tanai Township , Hukawng Valley , SW of Tanai City (CNUB).
Etymology.
The new species is named after the late Prof. Zaifu Xu (South China Agricultural University, Guangzhou, Guangdong, China), for his important contribution to the study of Chinese Dryinidae .
Remarks.
For its isosceles triangle shaped pronotal disc, H. zaifui is similar to H. nalae Perkovsky, Olmi, Müller & Martynova, 2019, H. concavifrons Perkovsky, Olmi, Müller & Martynova, 2019, H. resinicolus Engel, 2005 and H. ligulatus Perkovsky, Olmi, Müller & Martynova, 2019. However, H. zaifui has incomplete notauli (Fig. 2C View Figure 2 ), reaching about 0.7 × length of mesoscutum, whereas in the other species the notauli are complete.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.