Prosymnus astrictus Opitz, 2016

Opitz, Weston, 2016, Classification, Natural History, and Evolution of the Korynetinae (Coleoptera: Cleridae). Part III. The African GeneraEctospinulaOpitz, New Genus, andProsymnusLaporte, The Coleopterists Bulletin 70 (3), pp. 429-446 : 429-446

Prosymnus astrictus Opitz , new species ( Figs. 22 , 30 , 36 , 38 )

Holotype. ♂. Kenya, Kibwezi , Tsavo Park,

1-XI-1981, 1300 M, leg: Rautenstrauch ( FSCA).

Diagnosis. The slender shape of the last labial palpomere ( Fig. 5 ) will distinguish the members of this species from congeners.

Description. Size: Length 7.5 mm; width 4.0 mm. Form: As in Fig. 22 . Color: Cranium and pronotum dark castaneous, antennae, pterothorax, abdomen, and legs testaceous, elytra admixture of castaneous and black coloration, most elytral punctation black. Head: Antennal capitulum lax, antennomere 9 cupuliform, antennomere 10 triangular, antennomere 11 ovoid; eyes much narrower than frons (EW/FW 40/62). Thorax: Pronotum transverse (PW/PL 170/135); elytral disc sculptured with swellings and large, randomly distributed punctation (as in Fig. 15 ), elytral interstitial spaces variable in size, smooth and shiny; 1° setae very long, 2° setae often aggregated into small tufts. Abdomen: Setal patches on 3 rd and 4 th sternites; male pygidium scutiform; aedeagus as in Fig. 30 .

Natural History. The holotype was collected in November, at 1300 m elevation.

Distribution. This species is known only from Kenya ( Fig. 38 ).

Etymology. The specific epithet astrictus (= narrow) is a Latin adjective. The name describes the slender form of the terminal labial palpomere.

Figures

Figs. 19–22. Ectospinula and Prosymnus species, habitus. 19) E. graduata; 20) P. adustus; 21) P. arsus;

Figs. 28–35. Prosymnus species, male terminalia. 28) P. adustus; 29) P. arsus; 30) P. astrictus; 31) P. brevipenis;

Fig. 36. Phylogenetic tree computed from the character matrix (Table 1) for Ectospinula graduata and Prosymnus species.

Figs. 37–40. Geographic distribution of Ectospinula graduata and Prosymnus species.

Figs. 1–8. Body structures. 1) Ectospinula graduata, metathoracic wing. Antennae: 2) Necrobia rufipes; 3) E. graduata; 4) Prosymnus rudis. Terminal labial palpomere: 5) E. graduata; 6) P. rudis. Abdominal sternites: 7) P. rudis; 8) Prosymnus mulleri.

Figs. 15–18. Elytral structures of Prosymnus rudis. 15) Anterior region of elytra; 16) Elytron; 17) Epipleuron, anterior half; 18) Epipleuron, posterior half.