Ichnea acanthomelina Opitz

Opitz, Weston, 2010, Classification, Natural History, and Evolution of the Epiphloeinae (Coleoptera: Cleridae). Part VIII. The Genera Acanthocollum Opitz, Stegnoclava Opitz, and Ichnea Laporte, The Coleopterists Bulletin (mo 9) 64, pp. 1-65 : 24-26

Ichnea acanthomelina Opitz , new species

( Figs. 41, 144 , 158 , 187 ; Map 2 )

Holotype. ♀. Brazil, Rondônia, 62 km SW Ariquemes , nr Fzda. Rancho Grande, a second label that reads Nov. 1–7. 1997, B. K. Dozier, collector ( MZSP). (Specimen point mounted, gender label affixed to paper point; support card; locality label; collection date label; MZSP acronymic label; holotype label.)

Paratypes. Thirty specimens: Brazil: Pará, Jacareacanga , XII-1968, M. Alvarenga ( DZUP, 1; WOPC, 1). Rondônia, 62 km SE Ariquernes, 7- 18-XI-1996, W. J. Hanson ( EMUS, 5; WOPC, 2) ; idem, Fazenda Rancho Grande , 16-XI-1994, C. W. & L. O’ Brien ( JNRC, 1; WOPC, 1) ; idem, 5-16-XI- 1996, W. J. Hanson ( EMUS, 2; WOPC, 1) ; idem, 22- 31-1997, W.J. Hanson ( EMUS, 1) ; idem, Rancho Grande , 20-31-X-1997, B. K. Dozier ( WOPC, 1) ; idem, 1-14-XI-1997, B. K. Dozier ( EMUS, 3; WOPC, 2) ; idem, 1-17-1997, B. K. Dozier ( EMUS, 1; WOPC, 2) ; idem, 30-10-III-IV-1992, J. E. Eger ( WOPC, 1) ; idem, 6-15-XII-1990, D. A. Rider &

78) Protibia of Ichnea praeusta ; 79) Hindbody of I. praeusta .

J. E. Eger ( EMUS, 1). Mato Grosso, Diamantino Fazenda, Rio Arinos , II-1983, Eurides Furtado ( CMNH, 1; WOPC, 1); Vila Vera, X-1973, M. Alvarenga ( WOPC, 1); Sinop, Coordemadas, X- 1974, 350 m, M. Alvarenga ( WOPC, 1) .

Diagnosis. The more slender antennomeres of the antennal capitulum (compare Figs. 158 and 166 ) conveniently distinguish the members of this species from those of Ichnea atra Opitz , new species. Also, unlike in I. atra , the members of this species have the pronotum densely vested with golden setae.

Description. Size: Length 7.0 mm; width 2.8 mm. Form ( Fig. 144 ): Oblong subovoid. Integumental color ( Fig. 41): Cranium mostly black in upper frons, vertex, and upper epicranium, antennal apex yellow; pronotal integument mostly black, anterior angles yellow; elytra black. Head: HW/PW 1.0; frons indented; EW/VW 2.1; antennal funicle not compressed ( Fig. 158 ). Thorax: PL/PW 1.0; elytra subovoid, EL /PL 4.7; EL/EW 2.1; pronotum densely vested with golden setae; anterior margin of protibia with 11 spines. Male genitalia: Aedeagus as in Fig. 187 .

Variation. Size: Length 4.5–7.7 mm; width 1.7–2.5 mm. The extent of yellow at, and posterior to, the pronotal anterior angle varies. It extends to the posterior angle in two of the paratypes. Further- more, in some specimens there is a faint oblique fascia at the middle of the elytral disc.

Variation. Specimens have been collected during October through December, and during February; one at 350 m elevation.

Distribution. The species is known only from northwestern and central Brazil ( Map 2 ).

Etymology. The specific epithet is a Latin compound name stemming from the noun acanthus (= corner) and the adjective melina (= honey-colored) and refers to the light coloration on the anterior angles of the pronotum.

Figures

Map 2. Geographic distribution of Ichnea spp.

Figs. 142–144. Line habiti of 142) Ichnea incerta;

Figs. 157–168. Antennae of Ichnea spp. 157) I. aequinoctialis; 158) I. acanthomelina; 159) I. dimidiatipennis; 160) I. digna; 161) I. divisa; 162) I. gremia; 163) I. incerta; 164) I. plumbea; 165) I. marginella; 166) I. atra; 167) I. aterrima; 168) I. gregata.

Figs. 176–190. Aedeagi of Ichnea spp. 176) I. plumbea; 177) I. gremia; 178) I. digna; 179) I. callanga; 180) I. frenata; 181) I. procera; 182) I. opaca; 183) I. divisa; 184) I. incerta; 185) I. aequinoctialis; 186) I. gregata; 187) I. acanthomelina; 188) I. marginella; 189) I. aterrima; 190) I. lycoides.