Arthrolytus keltoni, Doğanlar, 2018

Doğanlar, Mikdat, 2018, World species of Arthrolytus (Hymenoptera Pteromalidae, Pteromalinae), with description of new species, Linzer biologische Beiträge 50 (1), pp. 255-289 : 282-283

Arthrolytus keltoni nov.sp. ( Figs 1o , 3o )

T y p e m a t e r i a l s: Holotype ♀, USA: North Carolina, Highland , 27.viii. 1957, Leg. L. A. Kelton, deposited in the CNC.

E t y m o l o g y: The name is derived from the name of Dr. P.C. Kelton who collected the holotype.

D i a g n o s i s: ♀: Malar space 0.36x length of an eye; Antenna with combined length of pedicel plus flagellum 2.52x as long as scape; anelli plus F1 1.63x as long as pedicellus; F1 2.25x as long as width; F2-F4 distincly longer than width; F5-F6 quadrate, club 1.3x as long as F1. Forewing with costal cell of fore wing 8.4 times as long as broad; submarginal vein 1.32x as long as marginal vein; and marginal vein 1.2x stigmal vein; post marginal vein 1.12x as long as marginal vein 1.46x as long as stigmal vein. Propodeum with lateral carina complete, transverse costula present midway between base and apex of propodeum; surface of propodeum anterior to this costula sculptured, surface posterior to costula with some carinae; strong median carina present. Body black, metasoma without black spot, 0.33 longer than mesosoma.

D e s c r i p t i o n: The diagnostic characters of this species are given above and need not be repeated here. Some additional characters are the following:

♀: Length 3.5 mm. Body black, Metasoma without black spot; Body black, antennal scape pale, flagellum brown; pedicel and legs beyond coxae yellow, F1 and club testaceous; Fore wing shaded behind marginal vein; forewing with black spot. Fore wing shaded behind marginal vein.

Head in dorsal view 2.1 times as broad as long; with clypeal margin slightly forwarded, minute, closely set slightly irregular rugae converging on anterior mouth opening; Right mandible with 4 teeth, left mandible with 3 teeth; POL 1.5x OOL; Antenna inserted low, slightly above level of ventral edge of eyes; Antenna ( Fig. 1o ) with combined length of pedicel plus flagellum (116) as long as 1.12x width of head; Relative measurement of antenna: scape 46:7; pedicel 13:6; second anellus twice as long as first anellus; F1 18:8; F2 13:9; F3-F4 12:10; F5-F6 10:10; club 21:12. Linear sensillae on F1 1+ 3 in 2 rows; F2-F3 2+ 3 in 2 rows; F4 3+ 4 in 2 rows; F5-F6 4+ 5 in 2 rows, C1-C2 5+ 6 in 2 rows, C3 5 in a row.

Mesosoma 1.4x as long as width; 0.82x as wide as head; scutellum 1.15x as long as width; 1.87x as long as propodeum. Forewing ( Fig. 3o ) with Relativ measurements of m: pm: st= 60: 67: 46.

Metasoma slightly wider than mesosoma; gastral terga 1-2 completely bare dorsally, 3- 5 th terga with a few setae near lateral margins, 6 th and 7 th with moderately dense, dorsal bristles.

♂: Unknown.

C o m p a r a t i v e n o t e s: Arthrolytus keltoni nov.sp. is similar to Arthrolytus maculipennis ( WALKER 1835) in having antenna inserted low, slightly above level of ventral edge of eyes; malar space hardly one third length of an eye; forewing with black spot; F1 2.2x as long as width. But it differs from A. maculipennis in having forewing with costal cell of fore wing 8.4 times as long as broad; antenna with anelli plus F1 1.63x as long as pedicellus; F2-F4 distincly longer than width; F5-F6 quadrate, club 1.3x as long as F1 (in A. maculipennis forewing with costal cell of fore wing 10.5-11 times as long as broad; sometimes relatively longer; antenna with anelli plus F1 2.4x as long as pedicellus; F2 slightly longer than width; F3 quadrate; F4 slightly, F5-F6 distinctly transverse. club 0.88x as long as F1).

D i s t r i b u t i o n: USA: North Carolina, highland.

Figures

Fig. 1: Arthrolytus spp. ♀♀ antennae: (a) A. oezbecki DOĞANLAR, 1978); (b) A. ocellus (WALKER, 1834) (GRAHAM, 1969); (c) A. nanus ASKEW & NIEVES ALDREY, 1982; (d) A. glandium BOUCEK, 1967 (BOUCEK & RASPLUS, 1991); (e) A. magarsosensis nov.sp.; (f) A. discoideus (NEES, 1834); (g) A. usubai KAMIJO, 1981; (h) A. yazicioglui nov.sp., (i) A. gurderei nov.sp., (j) A. slovacus GRAHAM, 1969; (k) A. kahvecii nov.sp., l-n. A. maculipennis (WALKER, 1835), (l) (BOUCEK & RASPLUS 1991), (m) (GAHAN 1933), (n) (GRAHAM 1969), (o) A. keltoni nov.sp.

Fig. 3. Arthrolytus spp. Forewings: (a) A. oezbeki DOĞANLAR, 1978; (b) A. oswaldpecki nov.sp.; (c, d) A. ocellus (WALKER, 1834) (c) from BOUCEK (1967); (d) from BOUCEK & RASPLUS (1991); (e. A. glandium BOUCEK (BOUCEK 1967); (f1) ♀ of A. nanus ASKEW & NIEVES ALDREY, 1982; (f2) ♂ of A. nanus; (g) A. magarsosensis nov.sp.; (h) ♀ of A. discoideus (NEES, 1834), (i). ♂ of A. discoideus; (j) A. usubai KAMIJO, 1981; (k) A. yazicioglui nov.sp., (l) A. gurderei nov.sp.; (m) A. kahvecii nov.sp.; (n) A. maculipennis (WALKER, 1835) (GAHAN, 1933); (o) A. keltoni nov.sp.; (p) A. geyrazensis nov.sp.; (q) A. incisus ASKEW & NIEVES ALDREY, 1982; (r) A. nenehatunae nov.sp.; (s) A. nuridemiragi nov.sp.