Camptocerus distinctus Smith and Cognato, 2010

Smith, Sarah M. & Cognato, Anthony I., 2010, A taxonomic revision of Camptocerus Dejean (Coleoptera: Curculionidae: Scolytinae), Insecta Mundi 2010 (148), pp. 1-88 : 68-69

Camptocerus distinctus Smith and Cognato , new species

(Fig. 44, 71)

Type Material. Holotype: male, 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 613

( USNM held in trust for MECN). Paratypes: EC-

UADOR: 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 613, 2F ( USNM); 1M, 1F ( MSUC).

Diagnosis. This species is solid black. The male

is distinguished by the shining, black elytra, by

each elytron with 8 rugae on the discal sutural

interstriae and extending to the second discal

interstria and each rugae bearing a single setae

that arises from the center, by the conical median

tubercle on the apical epistomal margin, by the

lateral epistomal margins bearing vertical cari-

nae, by the basal epistomal margin tumid above

scape insertion (Fig. 2b), by the erect frontal se-

tae, and by the absence of a transverse groove on

the basal pronotal margin.

The female is distinguished by the 8 shallow

rugae on the discal sutural interstriae of each

elytron, each rugae bearing a single setae that

arises from the center and by the reticulate frons.

Description (male). 5.3 mm long (mean = 5.3 mm; n = 2); 1.9-2.1 times as long as wide. Color Figure 44. Camptocerus distinctus , 5.3 mm, holotype uniformly shining black. male. Lateral (A), dorsal (B); male head anterior (C),

anterior oblique (D); female head anterior (E), anterior Epistoma strongly excavated, expanded to

oblique (F). greater than quarter length of head; surface reticulate; bearing a few short setae; each lateral margin with a sub-acute vertical costa pointing; apical margin armed with a conical median tubercle 1.5 times longer than base width; basal margin tumid above scape insertion. Frons strongly excavated; reticulate; bearing moderately dense, erect, fine, pale hair-like setae; excavation borders the ocular mar-

gin; excavation margins rounded and bearing a single row of long hair-like setae. Antennal scape elongate, expanded distally, glabrous on proximal quarter, ventral half bearing setae, these equal to 1/3 length of scape; segments 2-7 of funicle bearing brushes of setae, these equal to the length of scape; segments 2-7 of funicle bearing setae on dorsal margin, these less than length of 3 segments; anterior face of the club setose, with a partial septum.

Apical pronotal margin broadly rounded (Fig. 5a), area between the eyes glabrous; glabrous, smooth, shining, minutely punctured; base recurved (Fig. 8a), without a transverse medial groove; carina on lateral margin type B (Fig. 7b).

Scutellum shape type H ( Fig. 12h ).

Elytral sides parallel, narrowing to a smooth apex; base never tumid from interstriae 7-9. Glabrous, smooth, shining. Discal sutural interstriae bearing 8 rugae to the second interstria of each elytron, each rugae bearing a single setae arising from its center, striae not impressed; strial punctures small, interstrial punctures minute, half size of those of striae and strongly confused. Tenth interstriae with a carina shorter than metepisternum. Metepisternum shape type B ( Fig. 9b ); setae bifid. Mesosternum shape type A ( Fig. 10a ).

Male genitalia. Median lobe flat, lateral and apical margins with moderate sclerotization; lateral folds thick, uniformly arcuate; apex flat; lateral margins of median lobe folded dorsally, forming a broad point on apical third. Median struts stout, laterally compressed and wider basally, more than a third of body length. Internal sac central area and seminal valve membranous; sensory claspers heavily sclerotized, equal in size, dorsoventrally flattened and broadly rounded at base, laterally compressed medially, dorsoventrally flattened and scythe shaped apically; apex of left clasper projecting right, subducted under right clasper, apex of right clasper projecting left ( Fig. 71). Tegmen semi-circular, ventral side elongated proximally. Spicule destroyed in dissection.

Female. Similar to male except epistoma less than a quarter length of head, bearing a small median tubercle with height one half of the base width; moderately covered with setae; basal margin tumid above scape insertion. Frons flat, bearing sparse, short, fine setae; reticulate, with moderately sized, deep punctures; a triangular impressed area originating near the vertex and terminating at the distal and lateral epistomal margins, the triangle is bisected by a shallow carina on the median line. Each gena with a crescent-shaped mycangium (Fig. 4b). Segments 5-7 of funicle bearing setae on both ventral and dorsal margins, those less than the length of 2 segments. Each elytron with 8 shallow rugae on the discal sutural interspace to second interstriae, each rugae with a single setae arising from its center.

Specimens examined. (2M, 3F)

Distribution. Ecuador (Napo).

Hosts. Unknown.

Biology. Unknown.

Etymology. Distinctus (L) = distinct. This species possesses numerous distinct autapomorphies and is very different from other Camptocerus species.

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).