Callogryllus bilineatus ( Bolivar , 1900)

Sultana, Riffat, Sanam, Surriya, Kumar, Santosh, R, Sheik Mohammad Shamsudeen & Soomro, Fakhra, 2021, A review of Gryllidae (Grylloidea) with the description of one new species and four new distribution records from the Sindh Province, Pakistan, ZooKeys 1078, pp. 1-33 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1078.69850
publication LSID	lsid:zoobank.org:pub:573D4067-16A2-4E20-859D-354DFAF83B4D
persistent identifier	https://treatment.plazi.org/id/32BC6687-D252-52D3-A4F2-828FE832B053
treatment provided by	ZooKeys by Pensoft
scientific name	Callogryllus bilineatus ( Bolivar , 1900)
status

Treatment

Callogryllus bilineatus ( Bolivar, 1900)

Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 7 , 8 View Figure 8 , 9 View Figure 9 , 10 View Figure 10 , 11 View Figure 11

Material examined.

Pakistan, Sindh Prov. • 2♀; Riffat ; 25 Aug. 2019; Islamkot 24.7014°N, 70.1783°E GoogleMaps .

Description.

Medium size. Colouration brown to yellowish (Fig. 1R View Figure 1 ). Head brown, short, dome-shaped with four yellowish vertical sutures (Fig. 3G View Figure 3 ). Pronotum brown, concave anteriorly while pubescent and convex posteriorly with longitudinal rufous bands on dorsal field (Fig. 5H View Figure 5 ). Elytra scarcely extending to apex of first abdominal tergite, slightly crossing at median line with internal oblique margin, apex rounded; dorsal field plain with straight veins at regular intervals; transverse veinlets very scarce; lateral field with four curved veins (Fig. 10E View Figure 10 ). Legs yellow, brownish at base, strongly pubescent, irregular bands on dorsal field. Posterior tibiae armed with eleven external, three medio-internal spines (Fig. 7D View Figure 7 ). Abdomen yellow to dark brown, longitudinal rufous bands on each side. Ovipositor very long, straight, apical valves with dark base (Fig. 1R View Figure 1 ).

Female: LH 3.6 (mm), LP 04 (mm), LT 05 (mm), LF 13.5 (mm), LT 10 (mm), LT 03 (mm), TBL 18 (mm).

Ecology.

This species is recorded from wheat crops cultivated at Islamkot, Sindh. Weissman et al. (1980) observed that the hoppers emerged in the early days of June and continued to grow till mid-July. Adults were recorded from then to September. Peak period of species’ occurrence was noted as mid-August to end of September. Thereafter, no individuals were observed in the field. High risk was reported to Triticum (wheat) crops from different areas of Islamkot, Sindh (reference).

Global distribution.

India, Sindh, Pakistan ( Cigliano et al. 2020).

Remarks.

Chopard (1969) compiled a detailed account on this species: the head had the same pattern as C. ovilongus . The abdomen showed the longitudinal bands on both sides. The elytral length extended from the apex of the abdominal tergite. He calculated body length as 12 mm, pronotum 2.5 mm, elytra 2 mm, and ovipositor 9 mm. The collected specimens show variation in size as well as in other parameters, possibly due to geographical and feeding habitats. This species has unique characteristics, including the presence of a black band that runs from the pronotum where it makes a raised bulging cup-like structure; this black band covers the whole length of tegmen it follows a narrow straight line on the abdominal segments to the end of the last segment.