Eutettix latoides, McKamey, Stuart H., 2016

McKamey, Stuart H., 2016, A new species of Eutettix (Hemiptera, Cicadellidae, Deltocephalinae) from Wisconsin, ZooKeys 557, pp. 79-83 : 80-82

Taxon classification Animalia Hemiptera Cicadellidae

Eutettix latoides sp. n.

Diagnosis.

male with internal pygofer hook bifurcate distally, its ventral branch approximately five times wider than its dorsal branch.

Measurements.

Length of male with forewings in repose 4.4 mm, maximum width of pronotum 1.4 mm.

Description.

Head. Slightly wider than pronotum, anterior margin rounded in lateral view, with transverse striations between ocelli in anterior view, and, in dorsal view (Fig. 1) parallel margined, vertex with shallow furrow just behind anterior margin; frontoclypeal suture distinct (Fig. 3), clypeus slightly wider distally, frontoclypeus not tumid (Fig. 2); ocelli on anterior margin of head close to eyes, separated from them by nearly their width (Fig. 3). Thorax. Pronotum transversely striate, posterior margin weakly concave, lateral margin shorter than basal width of eye (Fig. 1); forewing macropterous with veins not raised, distinct appendix limited to anal margin, three anteapical cells, 2nd slightly constricted medially, venation not reticulate distally, A1-A2 crossvein absent; prothoracic femur (Fig. 3) with many small setae in row AV and intercalary row, AM1 seta present, dorsal surface rounded, not sharply carinate along AD and PD margins; metathoracic femoral apex macrosetal formula 2+2+1.

Male terminalia. Pygofer in lateral view bluntly pointed; pygofer hook (Fig. 7) arising basoventrally within pygofer, curving gradually dorsoposteriorly then abruptly ventroposteriorly, bifurcate apically, ventral branch finely serrate and gradually acuminate, approximately 5 × wider than dorsal branch, which has subparallel sides until acute apex. Aedeagus (Figs 4-6) in lateral view narrow throughout, lacking basal or median processes, bearing a pair of anterior apical leaflike processes slightly longer than half of aedeagal shaft, directed ventrolaterally, gonopore apical. Style with small basal lobe, pointed apex directed posteriorly. Connective basally broad, articulated with aedeagus, in dorsal view Y-shaped.

Color. Irregularly fuscous throughout, darker along transverse furrow on head frontoclypeal suture and vertex, on forewing cubitus apex and both r-c crossveins, and on legs setal bases.

Female. Unknown.

Distribution.

United States: central Wisconsin.

Probable host.

Quercus ellipsoidalis E.J. Hill (Northern pin oak or Hill’s oak). Because the label does not indicate how the specimen was collected from the oak, its host must be considered tentative until further specimens are collected. Nevertheless, it may indeed feed on oak. Hepner (1942) reported three other Eutettix species that have been collected from oaks: Eutettix querci Gillette and Baker, from Quercus undulata Torr. (Wavyleaf oak), and Eutettix querci albus Hepner and Eutettix prinoides Hepner, both from Quercus prinoides Willd. (Dwarf Chinkapin oak).

Holotype (USNM): male, with labels "[Wisconsin Rapids,] Wood Co., Wis. / Griffith St[ate]. Nursery / VII-22-1948 / R.D. Shenefelt Ray", "coll. from / Quercus ellipsoidalis / normal", and "HOLOTYPE / Eutettix / latoides / S.H. McKamey." Brackets indicate inferred data not on labels. Georeference: 44.3408°N; - 89.7349°W (DD).

Etymology.

The name is a combination of “latus” and the Greek suffix “-oides,” in reference to the resemblance of the new species to Eutettix latus , as discussed below.