Stegnoclava fumigata (Gorham, 1877)

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 : 14

Stegnoclava fumigata (Gorham, 1877)

( Figs. 15–27 , 32, 34 , 37, 38, 120 ; Map 1 )

Ichnea fumigata Gorham, 1877: 414 . Lectotype ♀. Here designated. Amazon, Bates (BMNH). (Specimen point mounted, club antennomeres and gen- der label affixed to paper point; support card; locality label affixed to support card; identification label; specimen number label; Fry collection label; Gorham type label; round type label; Opitz lectotype label; BMNH acronymic label; identification label; plastic vial with abdomen and ovipositor). Corporaal 1950.

Paralectotypes. The description of this species was based on an undetermined number of specimens.

Diagnosis. From superficially similar specimens of the two species described below, members of this species differ by having the anterior half of the elytra dark brown, except that the humeral angles are yellow. Differences in the aedeagus will also separate these species (compare Figs. 27–29 ).

Description. Size: Length 7.5 mm; width 2.0 mm. Form ( Fig. 120 ): Oblong, slightly triangular. Integumental color ( Figs. 37, 38): Cranium bicolored, lower frons and dorsolateral epicranium yellow, upper frons, vertex, and middiscal epicranium, ventrolateral epicranium black, antennae dark brown; pronotum dark brown at lower sides and centrally on disc, yellow in upper sides and along anterior margin; mesoscutellum black; legs dark brown, except yel- low in proximal half of femora. Head: HW/PW 0.9; EW/ VW 1.2; antenna as in Fig. 15 , funicle compressed, length half of eighth antennomere. Thorax: Pronotum ( Fig. 19 ) with obtuse lateral tubercle; PL / PW 0.8; elytra long rectangular, EL/ PL 4.6; EL/ EW 2.6; anterior margin of protibia with 14 spines. Male genitalia: Aedeagus as in Fig. 27 . Male mesodermal internal reproductive organs ( Fig. 34 ): Medial gland shorter than convoluted lateral gland.

Variation. Size: length 7.5–8.8 mm; width 2.0– 2.9 mm. There is considerable variation in the coloration of the elytra ( Figs. 37, 38).

Natural History. Specimens have been collected in June, August, and October. One specimen was captured at 290 m elevation.

Distribution. Distributed within the Amazonian regions of Peru and Brazil ( Map 1 ).

Specimens Examined. Eight. PERU: Loreto, Yurimaguas, Chambireyacu, VI-VIII-1985; Madre de Dios, Tambopata Wildlife Reserve , 30 km SW Puerto Maldonado, 12°50S 69°20′W, J. J. Anderson. BRAZIL: Amazonia, Tefé ; São Paulo de Olivienca, M. de Mathan: Pará, Maraba, near Bacuri, X-1974, J. F. Reinert. Specimens are deposited in BMNH and WOPC .

Figures

Map 1. Geographic distribution of Acanthocollum melanurum and Stegnoclava spp.

Figs. 15–21. Stegnoclava fumigata. 15) Antenna; 16) Head, frontal view; 17) Head, ventral view; 18) Pronotum, ventral view; 19) Forebody, dorsal view; 20) Pronotum, lateral view; 21) Mesoscutellum.

Figs. 22–31. Stegnoclava spp. 22) Maxilla of S. fumigata; 23) Mandible of S. fumigata; 24) Labium of S. fumigata; 25) Labrum of S. fumigata; 26) Metendosternite of S. fumigata; 27) Aedeagus of S. fumigata; 28) Aedeagus of S. zorropsis; 29) Aedeagus of S. velatis; 30) Forebody of S. zorropsis; 31) Forebody of S. velatis.

Figs. 32–35. Stegnoclava spp. 32) Metathoracic wing of S. fumigata; 33) Mesodermal male reproductive organs of S. velatis; 34) Mesodermal male reproductive organs of S. fumigata; 35) Mesodermal male reproductive organs of S. zorropsis.

Fig. 120. Habitus of Stegnoclava fumigata.