Fortigryllus xiangrui, Ji & Nel & Xiao & Gorochov & Jarzembowski & Ma & Xu, 2025

Ji, Xia, Nel, André, Xiao, Chuantao, Gorochov, Andrej V., Jarzembowski, Edmund A., Ma, Zehao & Xu, Chunpeng, 2025, A new weird cricket (Orthoptera, Gryllidea) from mid-Cretaceous Kachin amber in northern Myanmar, Fossil Record 28 (2), pp. 219-230 : 219-230

publication ID

https://doi.org/10.3897/fr.28.162805

publication LSID

lsid:zoobank.org:pub:309CD056-6429-4BA6-B64E-67689036D56A

DOI

https://doi.org/10.5281/zenodo.16044623

persistent identifier

https://treatment.plazi.org/id/E6389B3D-509D-5992-A7FA-E4046A8E01E1

treatment provided by

by Pensoft

scientific name

Fortigryllus xiangrui
status

sp. nov.

Fortigryllus xiangrui sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4

Type material.

NIGP 208736 . An apterous specimen with antenna partly broken, right midleg and hindleg incomplete, and abdomen almost damaged .

Etymology.

The specific name derives from the Chinese words ‘ xiangrui ’ meaning the fortunate sign.

Diagnosis.

As for genus.

Description.

Holotype NIGP 208736 View Materials . Body about 3.8 mm long measured from head to deduced abdominal apex; head 1.5 mm long; pronotum 2.2 mm long at midline, 1.5 mm wide; compound eyes 0.5 mm long, 0.4 mm wide; foreleg (left): femur 2.7 mm long, tibia 2.1 mm long; midleg (left): femur 2.1 mm long, tibia 2.0 mm long; hindleg (left): femur 3.1 mm long, tibia 2.6 mm long (Fig. 1 View Figure 1 ).

Head (Fig. 2 View Figure 2 ). Head very short, with striking color pattern in dorsal view. Compound eyes prominent, close to subgenae. Antennae filiform with about 70 antennomeres preserved; scape robust, approximately 2.6 times the width and 1.5 times the length of the pedicel; scape as long as width of fastigium. Maxillary palpus elongate, five-segmented, covered with sparse long setae, last palpomere longer than other palpomeres.

Thorax (Fig. 1 View Figure 1 ). Pronotum wider than long. Mesonotum and metanotum well developed, both nearly as long as pronotum, not covered by pronotum, with sparse fine setae; marginal areas indistinctly demarcated.

Legs. Forelegs (Fig. 3 View Figure 3 ): trochanter cylindrical and relatively thick; femur very robust at basal mid length, covered with short setae and sparse long setae; tibia shorter and slenderer than femur, covered with short setae, two pairs of long setae, and two slightly curved apical spurs; tympana oval-shaped, located at basal one-third of tibia; basitarsus slender and straight, shorter than tibia, second tarsomere shortest, third tarsomere narrow basally and broad distally, and two relatively small and simple apical claws. Midleg (Fig. 4 A – D View Figure 4 ): trochanter roughly elliptical; femur slightly shorter than profemur, robust with sparse setae; tibia almost equal to femur in length, covered with several setae and one slightly curved apical spur; basitarsus shorter than tibia and much slenderer, densely covered with tiny setae; second tarsomere shorter than basitarsus and third tarsomere, third tarsomere narrow basally and broad distally with two small and simple apical claws. Hindleg (Fig. 4 E – H View Figure 4 ): trochanter cylindrical; femur slightly longer and stronger than fore and mid femora, conspicuously sturdy and covered with sparse setae; tibia shorter than femur in length, densely covered with short setae and with only one slightly curved apical spur; basitarsus slender and straight, covered with tiny setae; second tarsomere shorter than basitarsus and third one; third tarsomere narrow basally and broad distally with two simple and small apical claws.

Abdomen (Figs 1 View Figure 1 , 5 View Figure 5 ). Abdomen almost invisible. Cerci long with club-shaped and filiform setae on the inner basal part, and densely covered with long setae.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

SubOrder

Ensifera

InfraOrder

Gryllidea

Family

Myrmecophilidae

Genus

Fortigryllus