Coeloides flavus Wang et Chen

Wang, Yi-Ping, Chen, Xue-Xin, Wu, Hong & He, Jun-Hua, 2006, The genus Coeloides Wesmael of subfamily Braconinae (Hymenoptera: Braconidae) in China, Zootaxa 1239, pp. 1-17 : 8-9

Coeloides flavus Wang et Chen , sp. nov. ( Figs. 12–17 )

Material studied. Holotype female: CHINA, Heilongjiang, Dedu, 19. vii. 1980, Yu Chengming, No. 810016, ex. Ips subelongatus Matschsky ( ZJUH).

Description (female). Length of body 4.8 mm, fore wing 4.5 mm, ovipositor 4.4 mm.

Head: Antennae with 37 segments; scapus suboblique, dorsally longer than ventrally and 1.8 times as long as its apical width; pedicel 0.4 times as long as scapus; first flagellomere longer than pedicel, apex ventro­laterally flared; length of first flagellomere 1.4 times its maximum width; second flagellomere 1.2 times as long as first one, its apex ventro­ laterally slightly flared; third flagellomere not flared, 1.3 times longer than second one; face finely punctated with elongate raised area medially, and largely smooth and shiny laterally; malar suture deep and distinct; height of clypeus: distance inter­tentorial: distance tentorial­ocular= 2: 8: 9; length of maxillary palp 0.7 times height of head; length of eye in dorsal view 0.9 times temple; temple smooth and densely setose; frons between antennal sockets and ocelli distinctly impressed; minimum distance posterior ocelli: minimum diameter of posterior ocelli: minimum distance between posterior ocellus and eyes= 3: 2: 9.

Mesosoma: Length of mesosoma 1.4 times its maximum height; pronotum and propleuron smooth; mesoscutum setose; notauli shallow anteriorly, and flattened posteriorly; scutellar sulcus deep, crenulate, narrow medially and wide laterally; metanotum with distinct medio­longitudinal carina; propodeum glabrous medially, densely long setose laterally, without medio­longitudinal carina or furrow.

Wing: Fore wing: length of veins r: 3­SR: SR1 = 5: 10: 31; length of veins 2­SR: 3­ SR: r­m = 7: 10: 6; vein cu­a distinctly postfurcal; Hind wing: length of veins SC+R: 1r­m = 13: 6, vein 2­SC+R longitudinal, short and about 0.3 times as long as vein 1r­m.

Leg: Length of femur, tibia and tarsus of fore leg = 17:20:31; length of femur, tibia and basitarsus of hind leg = 24: 35: 15, and 3.3, 7.0 and 5.1 times their maximum width, respectively; tibia of hind leg without lateral furrow.

Metasoma: Metasomal tergites smooth. First metasomal tergite slightly narrowed. First metasomal tergite largely smooth and shiny, and with a strongly raised carina medioposteriorly and areolate laterally, 1.2 times as long as its apical width; second metasomal tergite with a pair of distinctly diverging grooves sub­laterally, smooth except for a striolate medio­basal area; suture between second and third metasomal tergites narrow, deep medially and shallow laterally, weakly crenulate; remainder of metasomal tergites smooth and shiny, without antero­lateral carina or grooves; hypopygium short and acute, but not protruding beyond the apex of apical metasomal tergite; length of ovipositor 1.2 times that of metasoma, and 0.9 times fore wing.

Colour: Body uniformly yellow.

Diagnostic characters: This species is related to Coeloides ungularis Thomson , but can be distinguished from the latter by having the vein cu­a of fore wing distinctly postfurcal, the notauli shallow anteriorly, and flattened posteriorly, and the head, mesosoma and metasoma reddish­yellow.

Biology: Parasite of the larvae of Ips subelongatus Matschsky ( Coleoptera : Scolytidae ).

Etymology: From flavus, Latin for yellow, referring to the body colour of this species.

Figures

FIGURES 1 – 17. Coeloides abdominalis (Zetterstedt): 1. head, dorsal aspect; 2. basal antennal segments; 3. First, second and third metasomal tergites, dorsal aspect; 4. part of fore wing; 5. Coeloides bostrichorum Giraud: 5. First, second and third metasomal tergites, dorsal aspect; 6 – 11. Coeloides changbaiensis sp. nov.: 6. Head, frontal aspect; 7. head, dorsal aspect; 8. mesoscutum, dorsal aspect; 9. first, second and part of third metasomal tergites, dorsal aspect; 10. basal antennal segments; 11. fore wing. 12 – 17. Coeloides flavus sp. nov.: 12. Head, frontal aspect; 13. head, dorsal aspect; 14. mesoscutum, dorsal aspect; 15. first, second and part of third metasomal tergites, dorsal aspect; 16. basal antennal segments; 17. fore wing. Scale bars: 6, 7, 8, 12, 13, 14 = 0.83 mm; 9, 15 = 0.63 mm; 10, 16 = 1.05 mm; 11, 17 = 1.10 mm. (Figs. 1 – 5 redrawn after Yang, 1996).