Isoforma biguttula OPITZ, 2015

Opitz, Weston, 2015, Systematics of the checkered beetle subfamily Platynopterinae SPINOLA (Coleoptera Cleridae), Linzer biologische Beiträge 47 (2), pp. 1513-1572 : 1536

Isoforma biguttula OPITZ nov. sp.

( Figs 24-26 , 69 , 123, 124 , 154 , 175 )

Holotype: ♂. Teffe ( Ega ), Amazonas ( Brazil), M. De Mathan, 1 st Trimester, 1879 ( MNHN).

Diagnosis: The holotype has the black elytral macula extended to the anterior third of the elytral disc. No other available specimens of this genus have this characteristic. Also, only in the available specimen of this species is the cranium entirely testaceous.

Description: Size: Length 9.0 mm; width 4.0 mm. Form: As in Fig. 154 . Color: Cranium flavotestaceous; pronotum flavotestaceous; elytral disc mostly black, basal third flavotestaceous. Head: Antennal capitulum very long ( Fig. 69 ), each capitular antennomere longer than funicle; antennal carina very prominent; EW/FW 15/30. Thorax: Pronotal anterior margin linear, not projected at middle; side margins of disc rounded at middle; PW/PL 70/50; elytra conspicuously flared, discal carinae faintly developed; EL/EW 245/125. Abdomen: Male pygidium not incised at distal margin; aedeagus ( Figs. 123, 124 ) short; tegminal lobes uncinate; phallobasic rod long and broad.

Distribution ( Fig. 175 ): Known only from the type locality.

Etymology: The trivial name biguttula is a Latin adjective derived from the prefix bi- (= two) and gutta (= spot). I refer to the two black spots on the elytral disc.

Figures

Figs 16-30: Morphological organs of Isoforma goryi (16-23, 27-30) and Isoforma biguttula (24- 26). (16) Antenna, female; (17) Head, frontal view; (18) Head, ventral view; (19) Head, dorsal view; (20) Mandible; (21) Labrum; (22) Pronotum, ventral view; (23) Pronotum, dorsal view; (24) Phallus; (25) Tegmen; (26) Spicular fork; (27) Labium; (28) Maxilla; (29) Metendosternite; (30) Metathoracic wing.

Figs 62-69: Antennae. (62) Ambonoides retinoides, male; (63) A. caraguata, female; (64) Artoadenus dius, male; (65) A. regina, male; (66) Aspitonis alarutinis, male; (67) A. graminis, female; (68) A. undulicornis, male; (69) Isoforma biguttula, male.

Figs 109-132: Aedeagi. (109) Ambonoides retinoides phallus; (110) A. retinoides tegmen; (111) A. caraguata phallus; (112) A. caraguata tegmen; (113) Artoadenus dius phallus; (114) A. dius tegmen; (115) A. regina phallus; (116) A. regina tegmen; (117) Aspitonis alarutinis phallus; (118) A. alarutinis tegmen; (119) A. chiapas phallus; (120) A. chiapas tegmen; (121) A. undulicornis phallus; (122) A. undulicornis tegmen; (123) Isoforma biguttula phallus; (124) I. biguttula tegmen; (125) Platynoptera carti phallus; (126) P. carti tegmen; (127) P. flavohumeralis phallus; (128) P. flavohumeralis tegmen; (129) P.humeralis phallus; (130) P. humeralis tegmen;(131)P.lyciformis phallus;(132)P.lyciformis tegmen.

Figs 153-156: Habitus illustrations of (153) Aspitonis undulicornis, holotype; (154) Isoforma biguttula, holotype; (155) I. fritilla, holotype; (156) I. goryi, non-type.

Fig. 175: Geographic distribution of species as noted.