Chauvinia ganota Pos & Claridge & Diller & Noort & Giovanni 2023, sp. nov.
Creators: name: Pos, Davide Dal
name: Claridge, Brandon
name: Diller, Erich
name: Noort, Simon Van
name: Giovanni, Filippo Di
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Chauvinia
Chauvinia ganota

description: Chauvinia ganota Claridge sp. nov.
urn:lsid:zoobank.org:act: E12B92E3-4C41-4E8E-9F21-96E087EE9F8E
Figs 10–11, 12A–B, 13A, 14
Differential diagnosis
Chauvinia ganota sp. nov. can be distinguished from the other species of Chauvinia by the following combination of characters: (1) second tergite approximately 3× as long as apically wide (approximately 2 × in C. nitida and C. nyanga) (Fig. 10C); (2) female predominantly brownish-orange, with dorsal margin of pronotum predominantly yellowish-white (female predominantly black in C. nyanga, dorsal margin of pronotum orange to yellowish-orange and concolorous in C. nitida and C. pelecinoides) (Figs 10B, 11A); (3) female antenna with incomplete yellowish-white annulus from 9 th to the 11 th flagellomeres (annulus starting at the 7 th /8 th flagellomeres in C. nitida and C. pelecinoides) (Fig. 10B); (4) male overall lighter in colour than males of C. nyanga and with mesopleuron predominantly yellowish-white (mesopleuron predominantly black in C. nyanga) (Fig. 13A); (5) male face with less distinct and less impressed punctures (more distinct and deeply impressed in C. nyanga) (Fig. 12A).
Etymology
From the Greek ‘ ganotos ’ meaning ‘polished’ or ‘brightened’ as this species is overall lighter in colour compared to the species to which it is most similar, Chauvinia nyanga Rousse & van Noort, 2013.
Type material
Holotype
KENYA • ♀ “[Offwhite label] Karen, Nairobi, Kenya / Sept. 1972 2000± m./ C’ngham-vanSomeren”; EMUS ENT00006497.
Female, in very good condition.
Paratypes
KENYA • 1 ♀, 5 ♂♂; same collection data as for holotype; Aug. 1972; B. Claridge des.; EMUS; • 16 ♀♀, 11 ♂♂; same collection data as for holotype; Sep. 1972; EMUS • 4 ♀♀, 10 ♂♂; same collection data as for holotype; Oct. 1972; EMUS • 1 ♀, 10 ♂♂; same collection data as for holotype; Nov. 1972; EMUS • 1 ♀, 5 ♂♂; same collection data as for holotype; Dec. 1972; EMUS • 1 ♀; same collection data as for holotype; Mar. 1973; EMUS • 2 ♂♂; same collection data as for holotype; Sep. 1971; 6000 ft a.s.l.; EMUS • 1 ♂; near Nairobi; Jan. to Mar. 1972; 6000 ft a.s.l.; C. van Someren leg.; B. Claridge des.; EMUS.
Description
Female
MEASUREMENTS. Body length: 7.5 mm; fore wing length: 4.3 mm.
HEAD (Figs 11A, 12A). Subquadrate in frontal view (slightly higher than wide), overall shining; face transverse, more than 3× as wide as medially high, very finely, sparsely punctate with punctation denser laterally, medio-apically protruding in a very distinct blunt tubercule immediately ventral to antennal sockets, median field present, weakly convex, and delimited by indistinct carinae on the ventral part of the face; antennal socket slightly projecting into a small flange; dorsal tentorial arm pit distant from antennal sockets by less than 2× the diameter of the pit; frons and vertex almost completely smooth, with extremely sparse and superficial punctuation; ocellar triangle indistinct; occipital carina distinct and complete, meeting hypostomal carina before the base of the mandible; temples slightly rounded in dorsal view; gena, in lateral view, weakly inflated and nearly impunctate except for a few scattered, fine, superficial punctures; clypeus moderately convex, shining, and nearly impunctate except for a few scattered, fine, superficial punctures, particularly near ventral and dorsal margins; malar space short, about 0.6× basal width of mandible; mandible with sparse setiferous punctures in the central area, teeth rather stout with the ventral tooth shorter (about 0.7 ×) than the upper tooth; antenna subclavate with apical flagellomeres short and wide; flagellum with 23 flagellomeres, the 2 nd flagellomere about 0.8× length of 1 st, preapical flagellomeres slightly wider than long.
MESOSOMA (Fig. 11A–B). Overall shining; pronotum smooth and impunctate; epomia small but well-developed; propleuron finely punctate, with sparse hairs, projected into a blunt flange ventro-apically; mesoscutum smooth and impunctate except for a few scattered, fine, superficial punctures, notauli obsolete; scutellum flat and impunctate, carinated only at the base; mesopleuron smooth and impunctate except for a few scattered, fine, superficial punctures, speculum smooth; epicnemial carina slightly raised between fore coxae, laterally ending at anterior edge of mesopleuron; sternaulus distinct on anterior fourth; posterior transverse carina of mesosternum widely obsolete in front of mid coxae; metapleuron smooth and impunctate, juxtacoxal carina strong; propodeum long in lateral view, gently sloping posteriorly; propodeal carinae well-developed except for the posterior transverse carinae obsolete between median longitudinal carinae and subobsolete between median and lateral longitudinal carinae; propodeum overall smooth and sparsely punctate laterally, medially with confluent area consisting of area petiolaris, and area superomedia transversely rugulose, becoming coarser and denser posteriorly.
LEGS (Fig. 10B). All coxae finely, densely punctate; hind coxa without tooth-like projection or carina. Hind femur about 3.1–3.2 × as long as medially high. Tarsal claws without pecten.
WINGS (Fig. 10B). Fore wing with 3rs-m present, areolet pentagonal; 1cu-a opposite M&RS, CU between 1m-cu&M and 2cu-a about 2.7 × as long as 2cu-a. Hind wing with distal abscissa of CU absent.
METASOMA (Fig. 10C). Tergites smooth and impuctate; gastrocoeli and thyridia obsolete; 2 nd tergite approximately 3× as long as apically wide; ovipositor straight, slightly projecting.
COLORATION (Figs 10B, 12A). Head with face, clypeus, mandibles (except for black mandibular apex) pale yellow; inner eye orbit and postero-dorsal section of eye orbit yellow; remainder of head light brownish-orange ventrally and brownish-orange dorsally. Antenna with scape brownish-yellow ventrally, becoming dark orange-brown dorsally; pedicel brown; flagellum dark brown, becoming darker apically, except for 9 th to 11 th flagellomeres yellowish-white medio-dorsally. Mesosoma with pronotum light brownish-orange except for posterior 0.7 of dorsal margin yellowish-white; prosternum brownish-yellow; mesonotum brown medially and dark brown laterally and medially at anterior margin; scutellum orange-brown; mesopleuron light brownish-orange except for longitudinal yellowish-white area immediately dorsal to sternaulus; propodeum brownish-orange except for anteriorly dark brownish. Fore and mid legs with coxae, trochanters and trochantelli yellowish-white; femora light brownish-orange; tibiae light brownish-orange ventrally and dark orange-brown dorsally; tarsi dark orange-brown except for 4 th –5 th tarsomeres dark brown. Hind leg with coxa light brownish-orange ventrally and brown dorsally; tarsus dark brown except for 1 st –3 rd tarsomeres orange-brown basally. Metasoma brownish-orange with anterior and posterior areas of 1 st –4 th tergites lighter and 6 th –7 th tergites dark orange-brown; ovipositor sheath dark reddish-brown.
VARIATION (based on the 24 paratypes). Posterior transverse carina between median longitudinal carinae varying from obsolete (20 specimens) to subobsolete (1 specimen) such that area superomedia partially distinct; incomplete white banding on flagellum ranging from 8 th /9 th to 10 th /11 th flagellomeres.
Male (Figs 12B, 13B)
As in female, except for: head transverse, slightly wider than high; face finely, sparsely punctate; 2 nd –7 th tergites densely, finely punctate with punctae becoming progressively finer and sparser at posterior tergites; metasoma shorter than in female. Coloration: head with face, clypeus, mandibles (except for black mandibular apex), ventral 0.3 of gena, inner eye orbits, postero-dorsal section of eye orbit yellowish-white, remainder of head varying from brown to black. Antenna with scape yellowish-white ventrally and remainder dark brown; scape and flagellum dark brown. Mesosoma with pronotum varying from brown to dark brown except for entirety of ventral margin and 0.7–0.8 of dorsal margin yellowish-white; prosternum yellowish-white; mesonotum varying from entirely black to black with irregular brown submedial longitudinal areas; scutellum predominantly yellowish-white with variable light to dark brown area medially; mesopleuron with large yellowish-white area approximately spanning area ventral to speculum and dorsal to sternaulus except for small light to dark brown area at anterior margin along sternaulus, remainder varying from brownish-orange to dark brown, propodeum usually entirely dark brown to black, occasionally lighter and with small yellowish to yellowish-white mark immediately lateral to propodeal apophyses. Fore and mid legs with coxae, trochanters and trochantelli yellowish-white; tarsi light yellowish-brown except for 5 th tarsomere dark brown. Hind leg with coxa having large yellowish to dark brown spot on basal and ventral area, remainder yellowish-white; trochanter dark brown except yellowish-white apex; trochantellus yellowish-white; femur brown to dark brown except for basal 0.2 light brownish dorsally; tibia brown to dark brown dorsally and brown ventrally except for basal 0.2 dark brown to black; tarsus dark brown except 1 st tarsomere lighter ventrally. Metasoma with 1 st tergite dark brown; 2 nd –7 th tergites brown to dark brown with extreme apical margins yellowish-white.
Host
Unknown.
Distribution
Kenya (Fig. 14A–B).
description: Published as part of Pos, Davide Dal, Claridge, Brandon, Diller, Erich, Noort, Simon Van & Giovanni, Filippo Di, 2023, Still counting: new records, nomenclatural notes, and three new species of Phaeogenini (Hymenoptera, Ichneumonidae, Ichneumoninae) from the Afrotropical region, pp. 1-71 in European Journal of Taxonomy 868 on pages 26-31, DOI: 10.5852/ejt.2023.868.2105, http://zenodo.org/record/7891587