Cactophagus gasbarrinorum Anderson

Anderson, Robert S., 2002, The Dryophthoridae of Costa Rica and Panama: Checklist with keys, new synonymy and descriptions of new species of Cactophagus, Mesocordylus, Metamasius and Rhodobaenus (Coleoptera; Curculionoidea), Zootaxa 80, pp. 1-94 : 30-34

Cactophagus gasbarrinorum Anderson , new species

( Figs. 11­12 , 19­22 )

Identification.—This species is easily recognized by its large size (16­17 mm in length), pattern of elytral coloration ( Figs. 11­12 ), and large deep irregular punctures on the basal one­half of the rostrum (especially laterally) ( Fig. 19 ), the pronotal disc and the elytra ( Fig. 11 ). It bears some similarlity to C. validirostris which has more obvious dorsal punctation than most species of Cactophagus , although the punctures are not as deep and large as in C. gasbarrinorum . In some aspects it approaches the form of the species of Cactophagoides .

Description.— Male, not known. Female, length, 16.0­ 16.8 mm; width 6.7­7.6 mm. Color black except for narrow, transverse red band at base of elytra, band extended posteriorly from humerus along lateral margin to anterior one­third of elytral length whereupon directed inwardly to interval 8 (faintly also onto intervals 7 and 6), also with irregular broken band of elongate, dark red markings at apical one­quarter on intervals 2, 6 and 8, that on interval 2 long and narrow, extended almost to elytral apex.

Rostrum slightly longer than pronotum; elongate, robust, subcylindrical, evenly curved; coarsely, densely punctate in basal one­half (especially laterally in front of and behind point of antennal insertion), punctures finer, sparser towards apex, apical one­quarter virtually impunctate, glabrous; base of rostrum expanded, basal expanded area about one­third total rostral length. Rostrum glabrous ventrally; peduncle flat, bilamellate. Scrobe with posterior margin about three times width of base of scape from anterior margin of eyes. Antenna with scape moderately long, about one­half length rostrum; club slightly laterally compressed, elongate­oval; apical pilose part subequal in length to basal glabrous part. Pronotum with lateral margins slightly convergent in basal one­half, moderately convergent to subapex, apex tubulate; sparsely but deeply and irregularly punctate throughout; moderately but irregularly transversely impressed subbasally; disc with three irregular, low swellings at middle. Elytra with length one and one­half times length pronotum; with striae with large, deep punctures encroaching well into elytral intervals, intervals distinctly punctate, punctures smaller, shallower but denser than on striae; intervals somewhat rugose at about midlength elytra; base of intervals 2 –4 slightly swollen. Scutellum “V” shaped, length one and one­third times width at base, flat. Pygidium with apical onehalf vaguely carinate and setose, not tumescent; lateral margins at apex also setose; apex subtruncate. Ventrally with front coxae separated by slightly more than one­third width of coxa; prosternum coarsely, deeply punctate, slightly swollen between front coxae; flat anterior to coxae. Meso­ and metasterna and ventrites with large deep but sparse punctures, punctures smaller and shallower medially; last ventrite of female with small, flat, subapical area, not setose. Legs elongate, matte, with moderately large shallow punctures throughout; femora clavate, long and moderately narrow, hind femur almost reaching midlength of pygidium; inner margins of all tibiae and femora with only very short, sparse setae; all tibiae straight. Tarsi each with third article widely dilated, almost completely pilose ventrally except for very narrow, subbasal midline; all tarsi with third articles symmetrical and apical margins truncate.

Material Examined.—Female HOLOTYPE labelled “ Panama. Chiriqui Pr. / Reserva La Fortuna / Cont. Div. Trail / 18 Jan 92; El 1300m / H.P. Stockwell (CMNC). PARATYPE (1). PANAMA. CHIRIQUI PROVINCE. Cuenca Fortuna, Aoki Camp, 7.V.1985, R.W. Flowers (1). Paratype in CWOB.

Distribution.— Panama (Chiriqui).

Natural history.—The only known specimens were collected at or near 1300m in the vicinty of the La Fortuna Dam in Chiriqui in Panama. The habitat along The Continental Divide Trail and surrounding areas is a wet cloud forest.

Derivation of specific name.—Through his support of the Nature Discovery Fund at the Canadian Museum of Nature, this species is named after Ausilio "Silvio" Gasbarrino originally of Montreal, Canada.

Cactophagus lineatus Anderson , new species ( Figs. 13­14 , 23 )

Identification.—The single known specimen of this species can be easily recognized by the laterally incised pronotal margins, pattern of elytral coloration and the lack of any pronounced elytral sculpture ( Figs. 13­14 ). The pygidium is at most convex with the median line not distinctly raised or carinate. In addition, the prosternum in front of the coxae is flat, but sloping anteriorly.

Description.— Male not known. Female, length, 14.5 mm; width 5.8 mm. Color black, pronotal disc and flanks with irregular dark orange maculations among punctures, elytra with four yellow­orange stripes, one throughout length of interval 4, two along Rostrum about two­thirds length pronotum; elongate, cylindrical, evenly curved, densely, coarsely, deeply punctate dorsally at base and laterally at point of antennal insertion; apical one­half glabrous and very finely punctate, shining; base of rostrum expanded in dorsal view, basal expanded area long, about one­third total rostral length; in dorsal view with deep median sulcus in basal expanded area; in lateral view with deep irregular sulci (formed by coalescent punctures) behind point of antennal insertion. Peduncle convex, deeply bilamellate. Scrobe with posterior margin about four times width of base of scape from anterior margin of eyes. Antenna with scape about one­half length rostrum; club elongate­oval; apical pilose part very slightly longer than basal glabrous part. Pronotum with lateral margins subparallel to slightly divergent, abruptly constricted subapically, tubulate to apex; pronotum at constriction behind eyes somewhat excavate; moderately densely, deeply, irregularly punctate on disc and flanks; disc moderately deeply impressed subbasally at middle. Elytra with length one and one­third times length pronotum; intervals impunctate, convex; striae deeply impressed, impunctate. Disc laterally transversely creased or plicate at basal one­third and again at apical one­third; bases of intervals 2 and 3 slightly swollen and expanded; scutellar area depressed. Scutellum small, “V” shaped, length slightly greater than width at base. Pygidium slightly convex; coarsely deeply punctate throughout; apex subtruncate; with median row of short sparse setae in apical one­half and across apical margin. Ventrally with front coxae separated by only width of scape; prosternum moderately densely, irregularly punctate, flat but sloping anteriorly. Lateral portions of metasternum with large irregular punctures, otherwise venter moderately densely, irregularly shallowly punctate; punctures smaller medially on metasternum and ventrites 1­5; last ventrite flat, punctate. Legs moderate in length, moderately densely, shallowly punctate; femora clavate, hind femur reaching apical one­third of ventrite 5; front coxae with inner faces subtuberculate; inner margins of all tibiae slightly sinuate subbasally; inner margin of all tibiae with only short, sparse, peglike setae. Tarsi each with third article widely dilated, pilose ventrally except in broad fusiform median area in basal one­half; all tarsi with third articles symmetrical and apical margins truncate.

Material examined.—Female HOLOTYPE labelled “ Costa Rica, Prov. San Jose, / Estacion Santa Elena. 1300­1400m. / 15 FEB 1996 M. Segura. / L_S_371500_508500 #7678”, INBio barcode 2466110 (INBC).

Distribution.— Costa Rica (San Jose).

Natural history.—No information is available on natural history of this species.

Derivation of specific name.—This species is named after the linear pattern of elytral markings.

Figures

FIGURES 7 - 14. Cactophagus species. 7 - 10. Cactophagus dragoni Anderson. 7. Dorsal habitus, immaculate form. 8. Lateral habitus, immaculate form. 9. Dorsal habitus, maculate form. 10. Lateral habitus, maculate form. 11 - 12. Cactophagus gasbarrinorum Anderson. 11. Dorsal habitus. 12. Lateral habitus. 13 - 14. Cactophagus lineatus Anderson. 13. Dorsal habitus. 14. Lateral habitus.

FIGURES 19 ­ 22. Cactophagus gasbarrinorum Anderson. 19. Lateral view of head, female. 20. Antenna. 21. Hind leg, female. 22. Pygidium, female.

FIGURES 23 ­ 24. Cactophagus species. 23. Cactophagus lineatus Anderson, lateral view of head, female. 24. Cactophagus morrisi Anderson, lateral view of head, female.