Chelonus carinatus Provancher, 1881

Sandoval-B, Ada L., Shaw, Scott Richard, Herrera, Henri W. & Sarmiento, Carlos E., 2024, Diversity and differentiation of the Chelonus (Microchelonus) species of the Galapagos archipelago (Hymenoptera, Braconidae, Cheloninae), Journal of Hymenoptera Research 97, pp. 825-848 : 825-848

Chelonus carinatus Provancher, 1881

Fig. 1 B

Chelonus carinatus Provancher, 1881: 199 . Type locality: Canada.

Chelonus (Microchelonus) carinatus (Provancher): McComb 1968: 5, 7, 34.

Microchelonus carinatus (Provancher): Shenefelt 1973: 878. Papp 1999: 189. Papp 2010: 175. Papp 2016: 243.

Description.

Female. Body length 3.82–3.88 mm. Head black. Mandibles yellow with basal and apical areas brown. Antenna shorter than the body, penultimate flagellomere longer than wide. Scape yellow to brownish. First half of flagellomeres yellow to brownish. Carinae between ocelli and eyes present. Mesosoma black. Scutellum rugose. Foreleg: Coxa, femur, tibia and basal tarsomere brownish to yellow, trochanter light yellow, last tarsomere brownish to black. Middle leg: Coxa and trochanter brownish yellow, femur and tibia mostly brown to black with proximal and distal apex turning yellow, tarsi 1–4 yellow, last tarsomere black. Hind leg: Coxa black with apex yellow, Trochanter light yellow. Femur brown to black with proximal and distal apex turning yellow, tibia black to brownish with a proximal light-yellow band. Tarsi 1 to 3 mostly yellow, tarsi 4 and 5 brown. Fore wing stigma brown, veins RS, M, RSM and C + SCR light-yellow. Metasoma black with two lateral proximal yellow maculae, apical part also pale colored. Carapace in dorsal view with a pair of basomedially longitudinal carinae. Apical foramen of carapace absent.

Comments.

C. carinatus has been recorded as occurring widely in Canada, USA (Florida), and Central America ( Papp 2016). This is the first record of the species in the Galapagos. C. carinatus is distinguished by the carapace being long and narrow (0.4 × as wide as long in dorsal view), wings strongly infumated, and mesoscutum with dense confluent punctation. The carapace sculpture dorsally is distinctively longitudinally rugulose. The specimens collected in Galapagos present the apical part of the carapace pale colored while the descriptions provided by McComb (1968) and Papp (2016) indicated this is entirely black.

Specimens studied.

Ecuador, Galápagos – Floreana • 30 ♀♀; Cerro Pajas ; 1°17'38.256"S, 90°27'27.396W; 580 m a. s. l; 22–29 May. 2019; J. Avendaño, D. Albuja leg.; Humid zone; malaise trap; ECESPOCH- ICCDRS – Isabela • 1 ♀; 0°50'44.736"S, 91°3'22.355"W; 527 m a. s. l; 05 Jun. 2019; J. Avendaño leg.; Humid zone; swp; ECESPOCH- ICCDRS – Santiago • 1 ♀; 0°11'33.396"S, 90°47'43.008"W; 42 m a. s. l; 23–26 Jun. 2021; H. Herrera, J. Avendaño, P. Picón leg.; malaise trap; ECESPOCH- ICCDRS – San Cristobal • 4 ♀♀; 0°54'55.224"S, 89°26'2.184"W; 149 m a. s. l; 14–17 Jun. 2019; J. Avendaño, D. Albuja leg.; dry zone; PanTrap; ECESPOCH- ICCDRS – Santa Cruz • 1 ♀; 0°41'24.9"S, 90°13'18.804"W; 21 m a. s. l; 25 Sep. - 02 Oct. 2018; J. Avendaño, Y. Campaña, P. Picón leg.; malaise trap; ECESPOCH- ICCDRS .

Figures

Figure 1. Habitus of the Chelonus species found in the Galapagos islands. Chelonus buscki A Chelonus carinatus B Chelonus johni C Chelonus refluus D Chelonus sulcifera E Chelonus topali F Chelonus turgoclarus G. Scale bars: 1 mm. All are females.