Camptocerus major (Eggers)

Smith, Sarah M. & Cognato, Anthony I., 2010, A taxonomic revision of Camptocerus Dejean (Coleoptera: Curculionidae: Scolytinae), Insecta Mundi 2010 (148), pp. 1-88 : 28-31

Camptocerus major (Eggers)

(Fig. 18)

Camptocerus major (Eggers) 1929: 60 ( Loganius ).

Holotype: female, PERU: [Junín]:

Chanchamajo, Eggers Collection (NHMW).

Diagnosis. The female is distinguished by the

strigulate apical third of pronotum and punctate

posterior two-thirds; by the declivital interstriae

bearing short, fine setae and by the striae bearing

shorter, thinner setae.

Redescription (female). 3.4 mm long (mean = Figure 18. Camptocerus major , 3.4 mm, holotype female. 3.4 mm; n =1); 2.3 times as long as wide. Color Lateral (A), dorsal (B); head anterior (C), anterior oblique (D).

uniformly dark brown, nearly black.

Epistoma impressed, less than a quarter length

of head, unarmed; surface shagreened, covered with 4-5 rows of setae. Frons unarmed and flat, with the median area slightly impressed; surface shagreened, punctures separated by a distance of 1-3 times diameter of punctures, those on lateral margins larger and deeper; 4-5 rows of setae lateral to the median line. Each gena with a circular mycangium (Fig. 4c). Antennal scape elongate and narrowly rounded distally; segments 5-7 of funicle bearing setae on dorsal margin and segments 3-7 of funicle bearing setae on ventral margins, these less than length of 5 segments; anterior face of the club setose with a partial septum.

Apical pronotal margin broadly rounded (Fig. 6a), area between eyes bearing scales; apical third strigulate; basal two-thirds smooth, shining with minute, shallow punctures; apical fourth bearing stout setae (sometimes abraded); base weakly bisinuate (Fig. 8c); carina on lateral margin type E (Fig. 7e).

Scutellum shape type E ( Fig. 12e ).

Elytral sides parallel, narrowing to a serrate apex; base tumid from interstriae 7-9; surface smooth. Declivital with each interstriae bearing a row of uniseriate, minute, pale setae, these 2-3 times length of

Hosts. Unknown liana.

Biology. Unknown.

Diagnosis. Adults of both sexes are recognized by the larger, deeper pronotal punctures, by the strial and interstrial punctures equal in size and with their bases flat, never elevated and by the declivital interstriae bearing uniseriate, narrow scales.

Redescription (male). 2.2-3.6 mm long (mean = 2.9 mm; n = 17); 2.0-2.4 times as long as wide. Head, antennae, thorax, and elytra dark brown to black. Gena, abdomen and legs light to dark brown.

Epistoma impressed, expanded to greater than quarter length of head, unarmed; surface shagreened; lateral margins with a vertical sub-acute carina; 4-5 rows of setae lateral to the median line; basal epistomal margin armed with a strongly developed, sub-acute, arcuate carina (Fig. 2c). Frons strongly excavated, with the excavation bordering the ocular margin; surface shagreened; 5-6 rows of erect pale setae lateral to the median line. Antennal scape elongate and narrowly rounded distally, bearing setae on distal two-thirds, those equal to length of scape; segments 2-7 of funicle bearing brushes of setae 1.5 times the length of scape; segments 1-7 of funicle bearing setae on dorsal margin less than length of 6 segments; anterior face of the club setose with a partial septum.

Apical pronotal margin broadly rounded (Fig. 5a), area between eyes bearing scales; strigulate; shining with dense, shallow punctures; apical fourth bearing stout setae (sometimes abraded); base weakly bisinuate (Fig. 8c); carina on lateral margin type E (Fig. 7e).

Scutellum shape type E ( Fig. 12e ).

Elytral sides parallel, narrowing to a serrate apex; base tumid from interstriae 7-9; surface smooth, shining. Declivity with each interstriae bearing a uniseriate row of narrow scales; punctures equal diameter and depth of those of striae; strial punctures each with a hair-like seta arising from the basal margin, those covering puncture. Tenth interstriae with a carina shorter than metepisternum. Metepisternum shape type D ( Fig. 9d ); setae palmately divided into 4 or more filaments. Mesosternum shape type C ( Fig. 10c ).

Male genitalia. Median lobe flat, lateral and apical margins with more sclerotization, apex round, apical orifice membranous; lateral margins folded dorsally, each forming a triangle with an apex just below the apical third of median lobe; thin and arcuate distally on basal half. Median struts narrow, broader and laterally compressed basally, a third of body length. Internal sac membranous to moderately sclerotized, membranous apically and composed of 2 more heavily sclerotized narrowly elongate and curved projections on basal half ( Fig. 51). Tegmen semi-circular, ventral side elongated proximally. Spicule destroyed in dissection.

Female. Similar to male except epistoma less impressed, less than a quarter length of head, unarmed; minutely punctate; 3 rows of setae lateral to the median line. Frons weakly convex, unarmed, minutely punctate, glabrous, with the median area slightly impressed; 4 rows of setae on lateral margins. Each gena with a circular mycangium (Fig. 4c). Segments 4-7 of funicle bearing setae on dorsal margins; segments 5-7 bearing setae on ventral margins, these less than length of 4 segments.

Specimens examined. (36M, 50F)

Type Material. Holotype Camptocerus opacicollis , M ( NHMW) . Allotype Camptocerus opacicollis BOLIVIA: Cochabamba: (Germain), 1907, (H. Donckier) F ( NHMW) . Holotype Camptocerus aquilus M ( BMNH) . Paratypes Camptocerus aquilus BRAZIL: [Mato Grosso]: 12 o 31’S, 51 o 46’W, RS-RGS, 12- 18.xi.1968, (R.A. Beaver), 1M, 1F (USNM); Holotype Camptocerus uniseriatus , M ( NHMW). COSTA RICA : Holotype Camptocerus infidelis , F ( USNM) ; Paratype Camptocerus infidelis Peralta : Cartago, 1500 ft, ex. unknown vine 10.iii.1964, (S.L. Wood), 1F (USNM). Holotype Camptocerus uniseriatus , M ( NHMW) .

Other material. BOLIVIA: [ Santa Cruz ]: Oquiriquia forest, Tierra Prometida, N.E. Bolivia, ex. Xylopia sercea (Annonaceae) fogging, 1.viii.1997, (J.G. Davies), 2F (BMNH); 2.viii.1997, 1F (BMNH). BRAZIL: Amazonas: 69 km N Manaus, (G. Stevens), 3M, 3F (USNM); Reserva Ducke, 26 km NE Manaus, ex. malaise trap, i.1996, (M.G.V. Barbosa), 1F (BMNH); Bahia: ‘Bahia’, (Fry), 1F (BMNH); Goyas [= Goiás]: Jatahy, ix-xi.1897, 1M, 3F (SDEI). ECUADOR: Napo: Reserva Ethnica Waorani, 1 km S Onkone Gare Camp, -0.652778, -76.433333, 220 m, ex. canopy fogging, i.1994, (T.L. Erwin et al.), lot 610, 1F (USNM); Tiputini Biodiversity Station, -0.631944, -76.144167, 220-250 m, ex. canopy fogging, ii.1999, (T.L. Erwin et al.), lot 2034, 1F (USNM); lot 2053, 1M (USNM). PERU: Madre de Dios: Los Amigos Biological Station, -12.56916, -70.100114, 250 m, ex. Protium amazonicum , 17-25.v.2008, (Smith, Hulcr), 7M, 6F (MSUC); 26-27.v.2008, 19M, 26F (MSUC); Tampopata, 15 km NE Puerto Maldonado, Maldonado Reserva Cuzco Amazonico, 12 o 33’S 69 o 03’W, 200 m, ex. flight intercept trap, 15.vi.1989, (J. S. Ashe, A. Leschen), 1F (SMEC).

Discussion. Wood (2007) recognized both C.

infidelis and C. uniseriatus as separate species.

The holotypes of these species were found to be

identical to the C. opacicollis holotype and are

placed in synonymy.

Distribution. Argentina, Bolivia (Cercado, Santa

Cruz), Brazil (Amazonas, Bahia, Goiás, Mato

Grosso, Rio de Janeiro), Costa Rica, Ecuador

(Napo), Peru (Madre de Dios).

Hosts. Hirtella sp. (Chrysobalanaceae) , Protium

sp. ( Burseraceae ) (= “Almesca branca” [ Brazil],

“Almesca vermelha” [ Brazil], “Breu branco” [Bra-

zil]) ( Beaver 1972), Protium amazonicum Swart ,

unknown 1 cm diameter tree sapling ( Wood 1969).

Biology. Beaver (1972) provides a detailed account

of life history information for C. aquilus and Wood

(1969) describes the gallery of C. infidelis , both

are synonyms for C. opacicollis . Camptocerus

auricomus aggregate in leaves around host trees

and perform maturation feeding on Protium leaves

(Smith, pers. obs.)

Figures

Figure 9. Character 35: Metepisternum shape (A) type A (state 0; Scolytus ventralis); (B) type B (state 1; Camptocerus noel); (C) type C (state 2; C. latipilis); (D) type D (state 3; C. opacicollis); (E) type E (state 4; Cnemonyx vestitus); (F) type F (state 5; Camptocerus pilifrons); (G) type G (state 6; C. auricomus); (H) type H (state 7; Cnemonyx errans (Blandford)); (I) type I (state 8; Camptocerus quadridens); (J) type J (state 9; Scolytus propinquus Blandford); (K) type K (state A; Cnemonyx boliviae); (L) type L (state B; C. insignis); (M) type M (state C; Camptocerus costatus); (N) type N (state D; Scolytus excavatus); (O) type O (state E; S. schevyrewi); (P) type P (state F; Scolytopsis peruanus); (Q) type Q (state G; Camptocerus unicornus); (R) type R (state H; C. doleae).

Figure 10. Character 36: Mesosternum shape (A) type A (state 0; Camptocerus aeneipennis); (B) type B (state 1; C. costatus); (C) type C (state 2; C. rectus); (D) type D (state 3; C. mallopterus); (E) type E (state 4; C. latipilis); (F) type F (state 5; Cnemonyx vestitus); (G) type G (state 6; C. boliviae); (H) type H (state 7; Scolytopsis peruanus); (I) type I (state 8; Scolytus propinquus); (J) type J (state 9; S. ventralis LeConte; (K) type K (state A; S. multistriatus (Marsham)); (L) type L (state B; Cnemonyx errans); (M) type M (state C; Scolytus schevyrewi); (N) type N (state D; S. excavatus); (O) type O (state E; Camptocerus zucca); (P) type P (state F; C. unicornus).

Figure 12. Character 38: Scutellum shape (A) type A (state 0; Camptocerus aeneipennis); (B) type B (state 1; C. latipilis); (C) type C (state 2; C. rectus); (D) type D (state 3; C. doleae); (E) type E (state 4; C. opacicollis); (F) type F (state 5; Cnemonyx boliviae); (G) type G (state 6; C. rugulosus); (H) type H (state 7; Camptocerus distinctus); (I) type I (state 8; C. quadridens); (J) type J (state 9; Scolytus schevyrewi); (K) type K (state A; Cnemonyx insignis); (L) type L (state B; C. errans); (M) type M (state C: Scolytus excavatus); (N) type N (state D; Cnemonyx vestitus); (O) type O (state E; Scolytopsis peruanus); (P) type P (state F; Camptocerus unicornus).