Papuaepilachna tenmana (Bielawski)

Szawaryn, Karol & Tomaszewska, Wioletta, 2013, Two new genera of Epilachnini Mulsant from New Guinea and Aru Islands (Coleoptera: Coccinellidae), Journal of Natural History (J. Nat. Hist.) 47 (37 - 38), pp. 2427-2457 : 2447-2450

Papuaepilachna tenmana (Bielawski)

( Figures 9A–G , 10A–H , 15B )

Afidentula tenmana Bielawski, 1965: 47 .

Material

Papua New Guinea: North-east Telefomin August 1973, Abid Beg Mirza collector, Bishop Museum (1 male: BPBM) .

Diagnosis

The body distinctly heart-shaped makes Papuaepilachna tenmana most similar to P. wiebesi and P. watalai . It is distinguished from both these species by mandibular teeth provided with additional denticles and labrum with anterior margin more deeply emarginate medially. Additionally P. tenmana can be separated from P. wiebesi by having whole prothorax black while from P. watalai by antennomeres 6–8 at most as long as wide or transverse and male ventrite 5 truncate apically.

Description

Length 8.3 mm; TL / EW = 1.28; PL / PW = 0.45; EL / EW = 0.98; EW / PW = 1.97.

Body ( Figures 9G , 15B ) heart-shaped, convex; surfaces covered with short, white, appressed pubescence; black with mouthparts, antennomeres 2–8 and anterior angles of pronotum yellowish-brown.

Antenna ( Figure 9A ) with antennomeres 4 and 5 elongate, longer than antennomere 6; antenomere 6 subquadrate; antennomere 7 and 8 weakly transverse; antennomere 8 widened anteriorly. Mandibles ( Figure 9C, D ) with two apical and first subapical teeth large, sharp, triangular in shape with numerous additional denticles; second subapical tooth small and sharp. Labrum emarginate ( Figure 9B ). Labium ( Figure 9E ) with palpomere 1 short, subquadrate, longer than half length of palpomere 2; terminal palpomere about 1.5 times longer than palpomere 2. Terminal maxillary palpomere large, securiform about as long as wide ( Figure 9E ).

Prosternal process ( Figure 9F ) subtruncate at apex, weakly expanded apically; width of prosternal process about 1.8 times greater than length of prosternum in front of procoxae. Mesoventral process about 0.85 times as wide as coxal diameter at the same position ( Figure 9H ).

Legs with hind femora protruding from outer margin of elytral epipleuron ( Figure 9G ).

Abdominal postcoxal lines regularly curved ( Figure 10A ); male ventrite 5 as long as ventrite 4, apical margin of ventrite 5 truncate ( Figure 10A ), ventrite 6 narrowly, deeply emarginate, tergite VIII rounded ( Figure 10B, C ).

Male terminalia and genitalia ( Figure 10D–H ). Tergite IX not divided dorsally. Tergite X rounded at apex. Penis guide slightly longer than parameres; apex bent, subacute from outer view; penis guide with several setae at outer surface. Parameres weakly widening anteriorly. Tegminal strut shorter than penis guide and basal piece combined. Penis long, straight throughout most of its length, with sides parallel and apex rounded.

Female not known.

Figures

Figure 9. Papuaepilachna tenmana (Bielawski). (A) Antenna; (B) head, dorsal; (C) mandible, dorsal; (D) mandible, ventral; (E) head and mouth parts, ventral; (F) prosternal process; (G) habitus, ventral; (H) mesoventral process.

Figure 10. Papuaepilachna tenmana (Bielawski). (A) Abdomen, male; (B) ventrite 6, male; (C) tergite VIII, male; (D) male genital segment, ventral; (E) male genital segment, dorsal; (F) tegmen, inner; (G) tegmen, lateral; (H) penis, lateral.

Figure 15. Habitus: (A) Papuaepilachna wiebesi (Bielawski); (B) Papuaepilachna tenmana (Bielawski); (C) Lalokia aruensis (Crotch); (D) Papuaepilachna watalai (Jadwiszczak); (E) Papuaepilachna kapuri (Bielawski); (F) Papuaepilachna nasti (Bielawski); (G) Papuaepilachna bivakana (Bielawski).