Glenanthe kobbe Mathis 1995

Glenanthe kobbe

DIAGNOSIS.—Wing unpatterned; palpus mostly whitish yellow, faintly darkened basally; antenna mostly yellowish; flagellomere 1 yellowish orange; postpronotum, notopleuron, and alar area lacking a gray stripe; fore basitarsomere of male unadorned; and abdomen moderately microtomentose, tan.

DESCRIPTION.—Small shore flies, length 1.25 to 1.5 mm; generally dull, densely microtomentose, light brown to gray.

Head: Frons golden, light brown, anteromedial margin sometimes silvery white. Antenna scape and pedicel mostly black; flagellomere 1 black dorsoapically, median surface basoventrally yellowish orange. Face silvery white. Palpus whitish yellow.

Thorax: Mesonotum uniformly tan; gray stripe extended from postpronotum through ventral portion of notopleuron to postsutural supra-alar area; dorsal portion of anepistenum concolorous with mesonotum. Prescutellar acrostichal setae prominent, inserted in front of transverse alignment of postalar setae, widely set apart, distance almost equal to that between basal scutellar setae. Wing unpatterned, faintly infumate, hyaline; costal vein ratio 0.19; M vein ratio 0.4. Fore basitarsomere unadorned.

Abdomen: Dorsal surface yellow tan to light brown, microtomentose, dull colored. Male terminalia (Figures 30–32): Epandrium short; surstylus (Figures 30, 31) elongate, length approximately 2.5 times that of epandrium in lateral view, distinctly spatulate apically, apex bearing numerous setulae; aedeagus tubular, slightly sinuous in lateral view; aedeagal apodeme subtriangular, hypandrium with anteromedian process, well sclerotized.

TYPE MATERIAL.—The holotype male is labeled “[Panama] Kobbe Beach[,] C[anal]. Z[one]. July 1967[,] W. W. Wirth ex mangrove.” The allotype female and 11 other paratypes (7, 4; USNM) bear the same label data as the holotype. A male paratype is from: Panama. Canal Zone: Balboa, Feb 1958, M.R. Wheeler (UTA). The holotype is double mounted, is in good condition, and is deposited in the USNM.

OTHER SPECIMENS EXAMINED.—COSTA RICA. Punta Arenas: Playa Manuel Antonio (6 km SE Puerto Quepos; sandy mudflat around mangrove inlet), 30 Mar 1988, J.M. Hill, J.M. Mitchell, W.E. Steiner, J.M. Swearingen (1, 1; USNM).

EL SALVADOR. Acajutla (Pacific coast), Dec 1953, W.B. Heed (1;UTA).

DISTRIBUTION (Figure 26.).—Neotropical: Costa Rica, El Salvador, Panama.

ETYMOLOGY.—This species is named after the type locality, Kobbe Beach, in the former Canal Zone of Panama.