Account
What the sources say about this taxon, as written.
description · 
Plazi
Stridulatory file of male 1.06 mm long, with 40 teeth, maximum width of file 50 μm ( Fig. 39 J); teeth of file thick, peg-like, more densely arranged at proximal end of file. Left (upper) mirror of stridulatory apparatus as in Fig. 1 C, shorter than eye diameter. Fastigium of 1/2 to 3/4 as wide as scapus. Outer ventral edge of hind femur armed with 1-4 minute, black spines. Male cercus as in Fig. 39 B; ovipositor distinctly shorter than hind femur (ratio ovipositor/hind femur 0.62-0.71), weakly upcurved ( Fig. 2 E). Coloration .— Coloration unique, in live individuals head and anterior portion of pronotum aquamarine green or teal, posterior part of pronotum, thoracic terga and first four abdominal terga emerald green; remaining portion of abdomen of male bright orange-red, that of female reddish-brown; all femora brown, hind knees dark brown; fore and mid tibia emerald green, hind tibia dark green to brown. Dorsum of head and pronotum with wide, dark band, typical of most species of the genus ( Fig. 36 A). Coloration deteriorates considerably in preserved specimens but most of them still retain dark bluish-green coloration, unlike any other species of Conocephalus . Measurements .— Table 2 . Bioacoustics.— The call of C. angustifrons consists of a series of short chirps, produced at the rate of about 1.4- 2.0 per second (at 26°C) ( Fig. 52 C). Each chirp lasts 92- 124 ms (avrg. 116±10.3, n=10) and consists of 3-4 wingstrokes (opening and closing), with the first wingstroke being incomplete ( Fig. 52 D). Typically of the genus, the call is low Q, with most energy within the audible part of the call allocated between 6.5-16 kHz.
discussion · Plazi
Remarks.— This species is known from the Atlantic portion of Costa Rica ( Map 1 ), Panama , and Colombia . It is one of the most distinctive species of the genus and cannot be confused with any other species of Conocephalus in Costa Rica . Conocephalus angustifrons seems to be active mostly at night although males also stridulate during the day. This species appears to be predaceous, successfully hunting insects of nearly equal body size (e.g., katydids of the genus Phlugis ).