Maculocris yixiani Dai, Yao, & Ren, 2025
|
publication ID |
https://doi.org/10.4202/app.01186.2024 |
|
DOI |
https://doi.org/10.5281/zenodo.17259812 |
|
persistent identifier |
https://treatment.plazi.org/id/03AD285F-FF89-DA1C-9FAF-A9E0FA7137BF |
|
treatment provided by |
Felipe |
|
scientific name |
Maculocris yixiani Dai, Yao, & Ren |
| status |
sp. nov. |
Maculocris yixiani Dai, Yao, & Ren sp. nov.
Figs. 1–3 View Fig View Fig View Fig .
Zoobank LSID: urn:lsid:zoobank.org:act:.
Etymology: Derived from the Yixian Formation, where it was discovered.
Type material: Holotype CNU-HET-LB2024010 , male, well preserved bodies, antennae and forewings. Paratypes: CNU-HET-LB2024011 , male; CNU-HET-LB2024012 – 15 female; CNU-HET-LB2024016–19 , male; well preserved bodies, labium, leges and ovipositor from the type locality and horizon.
Type locality: Huangbanjigou , Chaomidian Village, Beipiao City, Liaoning Province, China.
Type horizon: Yixian Formation , lower Aptian, Lower Cretaceous .
Diagnosis.—Body large ( Fig. 1A View Fig ). Head nearly rounded pentagonal, as long as wide ( Fig. 2B View Fig ). Eyes relatively small, anterior almost adjacent to margin of pronotum ( Fig. 1A View Fig ). Length of antennomere II less than the combined length of antennomere III and IV ( Fig. 3B View Fig 4). Bucculae reaching at the midline of compound eyes, half the length of head ( Fig. 2B View Fig ). Labium reaching metacoxae ( Fig. 1C View Fig ). Ocelli situated closer to eyes than to each other ( Fig. 2A View Fig ). Pronotum impunctate; callosities well-developed, oval; posterior angles rounded ( Fig. 2A View Fig ). Scutellum punctate, triangular without sharp vertices, covered part of abdominal ( Fig. 3C View Fig ). Forewings corium with two rounded markings ( Fig. 1A View Fig ). Ovipositor long, bisecting the last four abdominal segments ( Fig. 1C, D View Fig ).
Description.—Body elongated, about 2.76 times as long as wide.
Head pentagonal, slightly shorter than pronotum, length about equal to width. Mandibular plates not projecting past midpoint of clypeus. Antenna four segments, slender, slightly shorter than half of body, antennomere I shortest, slightly exceeding the apex of head, antennomere II longest, antennomere III and IV subequal in length; antennomeres I–III subcylindrical, antennomere IV fusiform. Labium four-segmented, straight, appressed to venter, reaching metacoxae, labiomere I longest, 2.05 times as long as labiomere II, labiomere II–III subequal in length, labiomere IV shortest, tapering apically. Compund eyes relatively small, anterior almost adjacent to margin of pronotum. Ocelli present, closer to eyes than to each other, interocular gap narrower than the diameter of the ocelli.
Thorax smooth. Pronotum 1.56 times as wide as long, lateral margin convex, posterior angles feebly rounded. Pronotal collar and carinae absent. Pronotum with two large callosities on anterior area, callus broader than intercallus space. Scutellum subequilateral triangular; about 0.93 times as long as pronotum at midline, 0.85 times as wide as long.
Hemelytron poorly preserved, membrane venation not visible. Corium relatively small, almost 1/3 length of hemelytron. Corium with two obvious rounded markings, one of oval shapes in 1/3 length middle of corium, the other one nearly circular and relatively small on posterior margin of corium. R, M and Cu fuse in the basal of corium. Clavus well developed, clavate, tapers from the base to the apex, claval commissure absent.
Legs slender. Femora stout, about 2 times as thick as corresponding tibiae. Hind legs longer than fore and mid legs, metafemur longest, about 1.28 times as long as mesofemur, about 1.09 times as long as profemur, metatibia longest, about 1.27 times as long as mesotibia, about 1.65 times as long as protibia. Tarsi three-segmented, second shortest, third tarsomeres 3.91 times the length of the second. Pulvilli present.
Abdomen oval, abdominal connexivum sternites II–VII visible, Ovipositor long, bisecting the last four abdominal segments, about 1/3 of body length ( Table 1 View Table 1 ).
Stratigraphic and geographic range.—Yixian Formation, lower Aptian, Lower Cretaceous of Huangbanjigou, Chaomidian Village, Beipiao City, Liaoning Province, China.
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.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
SubOrder |
Heteroptera |
|
InfraOrder |
Pentatomomorpha |
|
Family |
|
|
Genus |