Grylloblatta newberryensis, Marshall, Christopher J. & Lytle, David A., 2015

Marshall, Christopher J. & Lytle, David A., 2015, Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953, Zootaxa 3949 (3), pp. 408-418 : 414-415

Grylloblatta newberryensis , n. sp.

Material examined. Holotype male, OSAC #0000583191, in ethanol vial; “ OR: Surveyors Ice Cave lava flow; S. of Newberry Crater; Marshall & Lytle, 18April2009 ”; code number “11001” written in ink on reverse; separate label with “ HOLOTYPE ” written in ink. Holotype locality is 43.6226°N, - 121.3105°W. Specimen in ethanol, deposited at OSAC. Extracted genomic DNA OSAC #0000583191: DNA:01. Two paratype females, same data as holotype, OSAC #0000115119//11003, OSAC #0000583192//11004.

Description. Neotype 15.5 mm long (measurements taken on ethanol-preserved specimen). Antenna with 32 segments on left and 31 right. Male supra-anal plate borne asymmetrically; right posterior apical corner acute, less than 90º; bearing several major setae. Right gonocoxite pubescent, with approximately four major setae on surface ( Fig. 3 B); bearing a distinct dorsal finger and lacking a pronounced concavity. Right gonostylus borne laterally on basal half, bearing three or four major setae on posterolateral edge; longest setae exceeding width of gonostylus. Abdominal tergites finely pubescent, with several strong setae regularly arranged along posterior margins. Cerci shorter than abdomen; 9-segmented; first cercal segment subdivided in some individuals; right cercus length 5.1 mm. Head width 3.3 mm, length 2.8 mm. Pronotum length 3.2 mm, width 2.8 mm. Interocular distance 2.3 mm, eye width 0.7 mm. Right hind femur length 4.9 mm, width 1.1 mm. Right hind tibia length 5.3 mm.

Female ovipositor with dorsal valvula longer than ventral valvulae. Individual segments of female cerci notably elongate, and cerci significantly longer than ovipositor.

Diagnosis. G. newberryensis is slightly larger than either G. rothi or G. chintimini . The female cerci, while still short for the genus, are much longer than in G. rothi or G. chintimini .

Distribution. The type series has been selected from a single location, Surveyors Ice Cave lava flow on Newberry Volcano. It is likely that this species encompasses a population reported in Kamp’s dissertation from South Ice Cave, also in the vicinity of Newberry Volcano ( Kamp, 1973, p. 233). Other specimens collected near Newberry Crater and identified as G. rothi (Schoville & Graening 2013) may also prove to be G. newberryensis .

Figures

FIGURE 3. Grylloblatta newberryensis n. sp. A, female, lateral view of ovipositor and cercus showing the dorsal valvula (dv); B, male, lateral view of right gonocoxa (gcx-r) and right gonostylus (gst-r); C, male, anterodorsal view of primary copulatory sclerite (pcs); D, male, anterior view of primary copulatory sclerite and secondary accessory sclerite (sas); E, male, anterodorsal view, detail of secondary accessory sclerite.