Helonoton amistad Lord and Ivie, 2016

Lord, Nathan P. & Ivie, Michael A., 2016, Several New Genera and Species of New World Synchitini (Coleoptera: Zopheridae: Colydiinae), The Coleopterists Bulletin 70 (4), pp. 715-753 : 715-753

Helonoton amistad Lord and Ivie , new species ( Figs. 6 , 24 )

Diagnosis. This species is most similar to H. costaricense in possessing irregular, vermiculate elytral tubercles that cross over elytral interstrial intervals and merge with neighboring tubercles, but differs in the subtly arcuate basal third of the pronotal lateral margins, margins with small, distinct denticles, and narrower and more elongate posterior mid-lateral pronotal tubercles.

Description. Size moderate (TL = 2.4 mm), body elongate (TL/EW = 2.3), parallel-sided; light brown to dark brown; habitus as in Fig. 6 . Head: Elongate (HW = 0.4 mm), not constricted behind eyes. Antennae: 11-segmented, ending in an abrupt, 2-segmented club; antennomeres 10–11 forming distinct club, antennomere 10 transverse, trapezoidal to slightly asymmetrical, narrowest at base; antennomere 11 truncate at base, transverse, rounded apically. Prothorax: Pronotum subquadrate to elongate (PW = 0.8 mm, PL = 0.7 mm, PL/PW = 0.8), widest at apical ¼, narrowest at base. Lateral margins of pronotum sinuate, widening apically, anterior ⅓ produced into small arcuate lobe, lateral margin with constriction at middle, posterior ½ subtly sinuate, with numerous small denticles; anterior angles distinct, angulate, slightly projecting forward to about level of anterior margin; posterior angles not apparent, evenly rounded. Pronotal disc with complex patterns of ridges and depressed areas; central portion with depressed area, bordered laterally by sinuate ridge, ridge equally raised throughout; central portion bordered anteriorly by paired, short, parallel ridges that become confluent with anterior margin; basal portion of central discal area with paired, baso-laterally directed ridges that end before posterior margin, creating subtriangular baso-medial depression. Pair of short, mid-lateral carinae present between lateral pronotal margin and basal half of central sinuate tuberculate ridge, as well as a smaller pair of shorter carinae present between lateral pronotal margin and anterior portion of central sinuate tuberculate ridge. Procoxal cavities broadly open externally. Mesothorax: Scutellum well-developed, visible, ovoid to pentagonal; anterior margin rounded or truncate, posterior margin rounded to weakly angulate. Elytra: Elongate, parallel-sided, widest at middle (EL = 1.8 mm, EW = 1.1 mm, EL/EW = 1.7). Surface with elongate tubercles or short carinae and vermiculate tubercles that cross interstrial intervals and merge with other tubercles, often difficult to define. Sutural stria raised, beaded, abruptly diverging antero-laterally to form scutellary striole. Each elytral base with 3 elongate carinae; 1 st at base of elytral interstrial interval 3, raised, elongate, distinctly swollen posteriorly; 2 nd at base of interval 5, ½ as long as carina on interval 3; 3 rd at base of interval 7, beginning at humeral angle and extending towards apex, 2X as long as carina on interval 5. Interval 9 without distinctly raised carina. Remaining tubercles and raised areas irregular, vermiculate, sometimes merging with neighboring tubercles. Carinae present on elytral declivity, long, extending nearly to apex. Epipleuron present, weakly defined, incomplete to apex, ending at abdominal ventrite IV. Metaventrite: Longer than abdominal ventrite I, with paired sinuate punctate grooves directly posteriad and bordering mesocoxae, also with paired, slightly curved punctate grooves directly anteriad and bordering metacoxae. Discrimen moderate, extending to middle ½ of metaventrite, strongly impressed between and anteriad metacoxae. Metacoxae transverse, narrowly separated. Metendosternite of fully winged form as in Fig. 2g (see genus-group description). Abdomen: Intercoxal process of abdominal ventrite I triangular, apex acute. In males, ventrites III and IV with large, smooth, transverse-oval patches in lateral areas; patches occupy most of ventrite IV. Metathoracic wing: Fully developed.

Distribution. Costa Rica, Panama ( Fig. 24 ).

Biology. Specimens were collected under bark, on fungus-covered logs, and in oak litter.

Etymology. From the word “amistad” meaning friendship in Spanish, and named in honor of the Parque International de La Amistad Costa Rica- Panama, which is shared between Costa Rica and Panama and is the source of much of the type series.

Type Material. 20 specimens. Holotype, male (pointed, CNCI): PAN: Chiri ; 2200m; 2km E Cerro Punta; 1.vi.77, S&J. Peck; Ber 377,oak litter . Paratype (pointed, CNCI): PAN: Chiri; 1360m; Lagunas, 5km NW; Hato del Volcan ; 22.v.77, S&J. Peck; Ber 372, u. bark . Paratype (pointed, CNCI): PAN: Chiri; 1550m; 15kmNW HatoVolcan; Hartmann Finca ; 25.v.77, S&J. Peck; Ber 369, u. bark . Paratypes (2 pointed, one partially dissected, genitalia and abdomen in glycerine in genitalia vial pinned underneath specimen, CNCI): PANAMA, Chiriqui; Prov. 2km N. Sta.; Clara , 1300m, 8°51′N,; 82°46′W Hartmann’ s; Finca 30-31.V.77; H. & A. Howden . Paratype (pointed, KSEM): PANAMA: Chiriquí; 27.7 km W Volcan,; Hartmann’ s Finca , 1650-1700 m; 8°51′48″N, 82°44′36″W; 18 Jun

1996; J. Ashe,; R.Brooks PAN1AB96 194; ex: fungusy log / [label with barcode] SM0050555; KUNHM-ENT. Paratype (pointed, missing head and prothorax, KSEM): PANAMA: Chiriquí; 27.7 km W Volcan; Hartmann’ s Finca, 1450 m; 8°51′48″N, 82°44′36″W; 17 Jun 1996; J. Ashe,; R. Brooks PAN1AB96 168; ex: fungusy log / [label with barcode] SM0042129; KUNHM-ENT. Paratype (pointed, KSEM): PANAMA : Chiriquí; 27.7 km W Volcan; Hartmann’ s Finca, 1450 m; 8°51′48″N, 82°44′36″W; 17 Jun 1996; J. Ashe,; R. Brooks PAN1AB96 168; ex: fungusy log / [label with barcode] SM0042121; KUNHM-ENT. Paratype (pointed, KSEM): PANAMA : Chiriquí; 27.7 km W Volcan; Hartmann’ s Finca, 1650-1700 m; 8°51′42″N, 82°44′48″W; 17 Jun 1996; J. Ashe,; R. Brooks PAN1AB96 164; ex: fungusy log / [label with barcode] SM0049750; KUNHM-ENT. Paratype (pointed, KSEM): PANAMA : Chiriquí; 27.7 km W Volcan; Hartmann’ s Finca, 1650-1700 m; 8°51′42″N, 82°44′48″W; 17 Jun 1996; J. Ashe,; R. Brooks PAN1AB96 164; ex: fungusy log / [label with barcode] SM0049743; KUNHM-ENT. Paratype (pointed, CNCI): PAN ., Chiriqui,; Las Lagunas ,; 1300m., 4.5 Km.; WSW Hato del Volcan, 22.V.; 1977, S&J Peck / Ber. 372, frass; under bark; and fungi. Paratype (pointed, KSEM): PANAMA : Chiriqui Prov ; 27.7 km W. Volcan ; Hartmann’ s Finca; 08°45′N, 82°48′W; 1450m, 16 VI 1995; J. Ashe & R.Brooks #226; ex: fogging fungusy log. Paratype (pointed, KSEM): COSTA RICA : Puntarenas Prov.; Las Alturas Biol. Sta. , 1660m; 08°56.17′N, 82°50.01′W; 1-VI-2004. J.S. Ashe, Z. Falin,; I. Hinojosa. Ex: fungus covered; logs. CR1AFH04 069 / [label with barcode] SM0610417; KUNHM-ENT. Paratypes (4 pointed, KSEM) : same data as previous specimen, but barcode numbers 0611823, 0611863, 0611876, and 0611973. Paratype (pointed, KSEM): COSTA RICA : Puntarenas Prov.; Las Alturas Biol. Sta. , 1660m; 08°56.17′N, 82°50.01′W; 3-VI-2004. J.S. Ashe, Z. Falin,; I. Hinojosa. Ex: fungus covered; logs. CR1AFH04 093 / [label with barcode] SM0613007; KUNHM-ENT. Paratype (pointed, partially dissected, genitalia and abdomen in glycerine in genitalia vial pinned underneath specimen, KSEM) : same data as previous specimen, but barcode number 0613057. Paratype (pointed, MNCR): COSTA RICA , Prov . Puntarenas. Coto ; Brus. Z.P. Las Tablas. Cotoncito.; 1400-1500m. 10-14 SEP 2006. R.; Gonzáles Tenorio. Tp. Luz.; L_S_321800_596700 #87457 / [label with barcode] INB0004041909; INBIOCRI COSTA RICA

Figures

Figs. 5–8. Synchitine Colydiinae, dorsal habitus. 5) Globotrichus harti, paratype (KSEM); 6) Helonoton amistad, holotype (CNCI); 7) Helonoton ashei, paratype (CMNC); 8) Helonoton bituberculatum, holotype (CMNC). Scale bars = 1 mm.

Figs. 23–24. Distribution maps of Helonoton species. 23) Species in Mexico, Guatemala, El Salvador, and Honduras;

Fig. 2. Helonoton costaricense. a) Head, ventral view, b) Labium, ventral view, c) Maxilla, ventral view, d) Antenna, e) Fore leg, f) Mandible, ventral view, g) Metendosternite, ventral view, h) Prothorax, ventral view, i) Pterothorax, ventral view, j) Abdominal ventrites I–V, ventral view, k) Aedeagus, dorsal view, l) Aedeagus, lateral view.