Calloeneis alexandra Gordon and Hanley, 2020

Gordon, Robert D., F, Guillermo González & Hanley, Guy A., 2020, South American Coccinellidae (Coleoptera), part XX: systematic revision of South American Calloeneis Grote (Cryptognathini), Insecta Mundi 2020 (766), pp. 1-25 : 15-16

19. Calloeneis alexandra Gordon and Hanley , new species

Description. Male holotype. Length 1.7 mm, width 1.6 mm; dorsal surface shiny except head strongly alutaceous. Color black ( Fig. 81 ); head yellow; pronotum with lateral 1/6 yellow ( Fig. 82 ); venter yellow except prosternum, mesosternum reddish yellow, metasternum dark brown. Head with punctures not visible; pronotal punctures small separated by a diameter or less; elytral punctures larger than on pronotum, separated by one to three times a diameter; prosternal, mesosternal punctures fine, separated by less than a diameter, metasternal punctures small separated by about a diameter medially, absent in lateral 1/3; abdominal ventrite 1 impunctate, ventrites 2–4 with fine punctures not clearly visible; ventrite 5 finely, densely punctured. Head with frons about as wide as eye, clypeus widened, clypeal apex arcuate ( Fig. 82 ); eye canthus short, about half width of eye. Prosternum with lateral carina on each side curved, extended from apex of intercoxal process to lateral margin of prosternum. Epipleuron not descending externally. Postcoxal line on basal abdominal ventrite curved, extended 3/4 distance to rear margin of ventrite. Genitalia with penis guide as long as paramere, parallel sided in basal 3/4, apical 1/4 widened, rounded laterally, apex deeply emarginate; paramere long, slender, apically rounded ( Fig. 83, 84 ); penis robust, apical 1/5 abruptly narrowed, apically attenuate, basal capsule long, inner arm apically hooked, outer arm long, apex rounded ( Fig. 85 ).

Female. Similar to male except vertex of head brown, extreme lateral margin of pronotum faintly paler than disc. Genitalia with ramus of spermathecal capsule bulbous, cornu narrowed from base to abruptly rounded apex.

Variation. Length 1.4 to 1.7 mm, width 1.3 to 1.6 mm. Female head often entirely dark brown. Type material. Holotype male: Taperina, Brazil, June, Acc. No. 2966. ( CMNH). Paratypes, 31, 1, Chapada, Brazil, Acc. No. 2966 ; 3, Corumba , Brazil, March, Acc. 2966 ; 1, Entre Rios , Brazil, Sept., Acc. No. 2966 ; 1, Macura , Brazil, Jan., Acc. No. 2966 ; 8, Rio de Jan. , July, Oct., Acc. No. 2966 ; 3, Santarem, Brazil, Acc. No. 2966 ( CMNH) ; 14, BRAZIL: Am, Reserva Ducke, 26kmNE Manaus, Barbosa, G.V., Plot B Malaise 5, October 1995, BMNH(E) 2003-84 ( BMNH) .

Remarks. Male genitalia of this species are highly distinctive and must be examined for identification.

Figures

Figures 81–94. Calloeneis spp. 81–85) Calloeneis alexandra. 81) Habitus. 82) Frons. 83) Penis guide ventral. 84) Penis guide lateral. 85) Penis. 86–90) Calloeneis brooke. 86) Habitus. 87) Frons. 88) Penis guide ventral. 89) Penis guide lateral. 90) Penis. 91–94) Calloeneis bethany. 91) Habitus. 92) Frons. 93) Penis guide ventral. 94) Penis guide lateral.