Chelonus chetini Beyarslan and Şahan, 2019

Beyarslan, Ahmet & B, Yasemin Bengü Şahan, 2019, A new species of Chelonini (Hymenoptera: Braconidae) from pistachio twig borer moth (Kermania pistaciella Amsel (Lep.: Tineidae )) in Gaziantep, Turkish Journal of Zoology 43 (4), pp. 388-392 : 389-391

Chelonus chetini Beyarslan and Şahan sp. nov. ( Figures 1–9 )

Material examined: Holotype: female, Turkey: Gaziantep Province: Nizip, Alahacı (36°55′10″N, 37°45′3″E, 525 m a.s.l.), 04.06.2017, 1♀; leg.: Y.B. Şahan.

Paratypes: Nizip, Alahacı (37°13′2″N, 37°46′13″E, 720 m a.s.l.), 11.04.2017, 1♀; 37°02′59″9, 37°22′11″1°1leg.: Y.B. Şahan. Gaziantep, Şahinbey (37° 02’ 59’’N, 37° 22’ 11”E), 840 m asl), 11.04.2017, 1♀; leg.: Y.B. Şahan.

Description. Female (holotype). Length of body 3.1 mm, length of head 0.35 mm, length of antenna 1.75 mm, length of fore wing 2.5 mm, length of hind wing 2.0 mm, length of mesosoma 1.3 mm, length of hind leg 2.7 mm, length of metasoma 1.6 mm, length of ovipositor 0.35 mm ( Figure 1 ).

Head. Head transverse, 2.0 times as wide as its length in dorsal view, roundly contracted behind eyes, temple 0.5 times as long as transverse diameter of eye in dorsal view. Occiput concave, ocelli small, ratios of OD: POL: OOL = 5: 12: 15. Vertex with transverse rugae behind ocelli, longitudinal diameter of eye 3.3 times height of gena; antennae short and slender, 16-segmented, slightly longer than mesosoma, pubescent; scape elongate and smooth, pedicel small and 1.7 times the width, length of 1st flagellar segment 2.6 times its width, 2nd flagellar segment as long as 3rd, shorter than 1st, apical segments almost as long as their width; face transverse in frontal view, width of face 1.4 times its height, coarsely reticulate-punctate; clypeus protuberant, denticles absent; length of maxillary palp 0.6 times as long as length of head ( Figures 1 and 4 ).

Mesosoma. Mesoscutum, scutellum and mesopleuron coarsely reticulate; propodeum coarsely sculpture, with small lateral teeth ( Figures 1 and 5 ).

Wings. Anterior margin of marginal cell of forewing shorter than pterostigma; radial cell of fore wing about as long as 2nd submarginal cell ( Figures 1 and 7 ). The hind wing very transparent and veins light yellow ( Figure 7 ).

Legs. Hind coxa coarsely punctate; length of hind femur 2.5 times its width, with minute punctures ( Figures 1 ), hind tibia longer than hind tarsus (70: 57 respectively).

Metasoma. Metasomal carapace oval, not bent apically; length of metasomal carapace 1.3 times its width in middle, densely and rather coarsely punctate, with reticule in basal, becoming weaker toward its posterior part. Metasomal carapace with a suture at distal 2/3 ( Figure 8 ). Ovipositor projecting beyond apical sternite ( Figure 9 ).

Coloration. Body black; antenna black, except brownish basal segments; maxillary palp and mandible brownish; wings slightly infuscate, basal half with pale yellowish veins, pterostigma dark brown, distal half with brown veins ( Figures 1 and 7 ); legs mostly brownish, coxae black, hind femur and partially tibia infuscate, the basis of carapace with a yellow triangular spot ( Figure 8 ).

Distribution. Turkey (Gaziantep).

Differential diagnosis. Chelonus chetini Beyarslan & Şahan sp. nov. is related to C. latrunculus (Marshall 1885) . The two species are separated by the combination of the following characters:

1 (2). Metasomal carapace with a suture at distal 2/3 ( Figure 8 ), 1.3 times as long as wide, black and with a yellow triangular spot at base, metasomal carapace without longitudinal folds; tegulae black, body 3.1 mm ................... .................................... C. chetini Beyarslan & Şahan sp. nov.

2 (1). Metasomal carapace without a suture at proximal 1/3, 1.5 times as long as wide and entirely black, longitudinal folds on abdomen fine and short; tegulae brown, body 2.5– 3 mm. .......................... C. (M.) latrunculus (Marshall 1885)

Etymology. The new species was named in honor of Turkey’s entomologist Çetin Şengonca, who led us to the systematics of Braconidae .

Male. Unknown.

BEYARSLAN and ŞAHAN / Turk J Zool

Nomenclatural acts

This work and the nomenclatural acts it contains have been registered in ZooBank. The ZooBank Life Science Identifier (LSID) for this publication is: http://zoobank. org/ urn:lsid:zoobank.org:pub:18B978C4-C0F3-4DFC-A273-FC85AD1E9C2D

Figures

Figures 1–5. Chelonus chetini Beyarslan & Şahan sp. nov.: 1- habitus, 2- head frontal, 3- head dorsal view, 4- head lateral view, 5- mesosoma lateral view.

Figures 6–9. Chelonus chetini Beyarslan & Şahan sp. nov.: 6- mesosoma dorsal view, 7- fore wing, 8- metasoma dorsal view,9- metasoma distal view.