Moriosomus sylvestris Motschulsky

Erwin, Terry L. & Moore, Wendy, 2007, Taxonomic review of the Neotropical genus Moriosomus Motschulsky (Insecta: Coleoptera, Carabidae, Morionini) with notes on the way of life of the species, Zootaxa 1438, pp. 49-63 : 55-60

Moriosomus sylvestris Motschulsky

( Figs. 4 , 7 , 9)

Type specimens. According to Keleinikova (1976), three syntypes from Panamá are in the Collection of the Zoological Museum in Moscow. A lectotype has not been designated. Type material was not examined. According to Motschulsky (1855: 200, see Appendix), these specimens were collected from the virgin forests of Obispo, Panamá.

Proposed English vernacular name. Lowland robust carabid beetle.

Diagnosis. With the attributes of the genus as described above and pronotum wider than long, lateral margin with four setae; elytron with interneurs punctulate; submentum with four setae; prosternum and prosternal intercoxal process glabrous. Size relatively small for genus, SBL <14.6 mm.

Description. ( Fig. 4 ). Size relatively small, ABL = 11.5 to 14.5 mm, SBL = 11.3 to 14.3 mm, TW = 4.0 to 4.6 mm. Color: Head, pronotum and elytra black, legs very dark rufous, base of tibia and tarsomeres of middle and posterior legs infuscated. Microsculpture: Dorsal surface with microlines shallowly impressed, effaced in some areas, sculpticells transverse. Head: Frons glabrous, clypeus shallowly emarginate, with one seta on each side near anterior margin; labrum emarginate with six setae on anterior margin; mandibles large with scrobe wide, lateroventral margin of mandible explanate and rounded; submentum with two pairs of setae. Prothorax: Pronotum markedly convex, wider than long, with four setae along lateral margin, three evenly distributed in anterior 2/3 and one at hind angle, lateral margin beaded in posterior 2/3; prosternum and prosternal intercoxal process glabrous. Pterothorax: Metepisternum with lateral margins twice as long as anterior width, metasternum with one pair of setae. Elytra separate from one another. Interval 7 carinate, markedly so in posterior 1/3; interneurs punctate ( Fig. 4 ). Metathoracic wing normally developed. Abdomen: Sternum VII with a pair of setae posteriorly in males and females. Male genitalia: ( Figs. 7 a–c). Phallus slightly infuscated distally; basal bulb crested ( Fig. 7 a), subacute; ostium length less than 1/2 shaft length; ventral surface ( Fig. 7 b) distad basal opening slightly tuberculate (not apparent on illustration); apex narrowly rounded. Endophallus with one large microtrichial field; tubular without obvious margins; Parameres subequal in length; left paramere ( Fig. 7 b) in ventral aspect distinctly oblong, with distal margin broadly rounded.

Dispersal potential. This species seems to have the best dispersal potential of the three described species in the genus. Adults are fully winged and the species has a relatively wide range.

Way of life. Available evidence suggests that this species may be confined to lowland tropical forests in association with rotting logs and that its members are active in all months of the year.

Other specimens examined. COSTA RICA: Alajuela, P.N. Guanacaste, Sect. San Ramon, 620m, 10° 52' 59” N, 085° 24' 28” W, LN318100,381900, March (K. Taylor) ( INBIO: CRI 002211334, #2763, female), E.B. San Ramon, R.B. San Ramon, 27 km N & 8 km W San Ramon, 810m, 10° 13' 04” N, 084° 35' 46” W, July (J. Ashe, R. Brooks & Z. Falin) ( KUNHM: ADP 106581, #CR1ABF00 0 76, male); CARTAGO, Turrialba, 600m, 09° 53' 0 N, 083° 39' 0 W, LN574947,208307, ( CAS: ADP 007358, male; CAS, ADP 007360, female), (O. Bryant) ( CAS: ADP 008580, female), June – July, (K.W. Cooper) ( MCZ: ADP 048515, sex unknown), Estación Barbilla, P.N. Barbilla, 2 km S Turrialba, Sendero a Rio Barbilla, 600m, 09° 58' 52” N, 083° 27' 15” W, LN5963870, 218279, February (W. Arana) ( INBIO: INB0003130187, #61588, female), IICA Experimental Station - CATIE, 1.6 km N Turrialba, Rio Reventazon, 600m, 09° 53' 0 N, 083° 39' 0 W, LN574947, 208307, June–July (K.W. Cooper) ( MCZ: ADP 048522, sex unknown); GUANACASTE, Estación Cacao, P.N. Guanacaste, SW slope, Volcán Cacao, 1000 – 1400m, 10° 59' 26” N, 085° 25' 40' W, LN323300, 375700, September (C. Chaves) ( INBIO: CRI 000331766, #87, female), Estación Pitilla, P.N. Guanacaste, 9.0 km S Santa Cecilia, 700m, 10° 59' 33” N, 085° 25' 46' W, LN330200,380200, August (C. Moraga) ( INBIO: CRI 001639919, #2322, male; CRI 002029798, #3198, female), November (C. Moraga) ( INBIO, CRI 001162525, #2449, female), July (F.A. Quesada) ( INBIO: CRI 000499872, #1, male), January (P. Rios) ( INBIO: CRI 002214592, #4358, female), February (P. Rios, C. Moraga & R. Blanco) ( INBIO: CRI 000124249, male), August ( INBIO, CRI 002051854, #3171, female); HEREDIA, Los Arbolitos, 30m, 10° 38' 36” N, 084° 00' 12” W, LN536100, 291400, March (F. Araya) ( INBIO: CRI 001676857 = ADP 087194, #1952, male), Estación Biológica La Selva, 3.0 km S Puerto Viejo, Finca La Selva, 50 – 150m, 10° 25' 55” N, 084° 00' 32” W, LN535500, 268000, July (J.C. Solomon) ( NMNH: ADP 027722, female), Estación El Ceibo, Z.P. La Selva, 400 – 600m, 10° 19' 40” N, 084° 04' 49” W, LN527700,256500, April (C. Chaves) ( INBIO: CRI 000210626, #73, male), Puerto Viejo, 5 mi. Up Sucio River, R.T. Allen 1965 ( UASM, female); LIMó N, Finca Colombiana, April (W.M. Mann) ( NMNH: ADP 007359, female), Parismina, Finca Salvadora, 10m, 10° 12' 0 N, 083° 38' 0 W, December (F. Nevermann) ( NMNH: ADP 003310, male, ADP 007354, female), Puerto Limón, Toro Amarillo, 300m, 10° 00' 0 N, 083° 02' 0 W, November (F. Nevermann) ( NMNH: ADP 003312, female; ADP 003311, female; ADP 007355, female; ADP 007357, female), Rio Reventazon, Ebene, Hamburg Farm, 10m, 10° 15' N, 083° 28' W, March (F. Nevermann) ( NMNH: ADP 003307, female), August ( NMNH: ADP 003305, female; ADP 003306, female), September ( NMNH: ADP 003300, male; ADP 003303, female; ADP 007353, female), October ( NMNH: ADP 003304, female; ADP 003301, male; ADP 003302, female), 18 km E Guapiles, Las Mercedes, 10m, 10° 10' 0 N, 083° 37' 0 W, February (F. Nevermann) ( NMNH: ADP 003309, female), nr Guapiles, La Emilia, 250 – 300m, 10° 13' 0 N, 83° 47' 0 W, September (D. Rehn) ( ANSP: ADP 068104, male), P.N. Tortuguero, Agua Fria, Sendero Real, 50m, 10° 25' 14” N, 083° 34' 52” W, LN266825, 582339, August (W. Porras, B. Gamboa, D. Brinceno, & M. Moraga) ( INBIO: INB0003871792, male), R.B. Hitoy Cerere, Talamanca, Cerro Bitarkara, 1025m, 09° 38' 25” N, 083° 08' 15” W, LS398841, 558082, October (B. Gamboa) ( INBIO: INB0003888874, #78494, female), R.V.S. Barra del Colorado, Rio Sardinas, 10m, 10° 34' 0 N, 83° 32' 0 W, LN291500, 564700, July (F. Araya) ( INBIO; CRI 000690608 = ADP 093613, female), October ( INBIO: CRI 002355209 = ADP 093613, #6336, female), R.V.S. Barra del Colorado, 30.0 km N Cariari, Sector Cerro Cocori, Finca de E. Rojas, 150m 10° 35' 29” N, 083° 42' 29” W, LN286000, 567500, January (E. Rojas) ( INBIO: CRI 001856266, #2549, female; CRI 001856293, #2549, female; CRI 001856294, #2549, male), R.V.S. Gandoca-Manzanillo, Manzanillo, 0m, 09° 38' 00” N, 082° 43' 00” W, LS398100,610600, August (K.E. Taylor) ( INBIO: CRI 000763404 = ADP 005404, female), Estacíon Hitoy Cerere, R.B. Hitoy Cerere, 100m, 09° 40' 34” N, 083° 01' 33” W LN184600, 643400, March (E. Rojas) ( INBIO: CRI 002413180, #49775, male; CRI 002413179, #49775, female), March–April (G. Carballo) ( INBIO: CRI 000445411, female), R.V.S. Jaguarandi, R.V.S. Barra del Colorado, 30.0 km N Cariari, Sector Cerro Cocori, Finca de E. Rojas, 150m, 10° 32' 24” N, 083° 42' 59” W, LN286000, 567500, April (E. Rojas) ( INBIO: CRI 000768578, female; CRI 000768633, male; CRI 001786337, #2824, female); PUNTARENAS, P.F. Golfo Dulce, Peninsula de Osa, Rancho Quemado, 200m, 08° 40' 44” N, 083° 34' 00” W, LS292500, 511000, June (F.A. Quesada) ( INBIO: CRI 000861949, male; CRI 000861952, male), July ( INBIO: CRI 000736362, female), August ( INBIO: CRI 000889745, male), September ( INBIO: CRI 001190431, female), R.V.S. Golfito, Golfito, Sector El Tajo, 100–200m, 08° 40' 11” N, 083° 11' 55” W, LS291500, 551500, September (W. Porras, B. Gamboa, D. Briceno, & M. Moraga) ( INBIO: INB0003881119, #76846, male), Estación Agujas, P.N. Corcovado, Golfito, Sendero Homo, 250–350m, 08° 32' 12” N, 083° 25' 03” W, LS276750, 526650, July (R. Gonzales) ( INBIO: INB0003309842, #57250, male), Sendero Ajo, 300m, 08° 32' 12” N, 083° 25' 03” W, LS276750,526650, September (A. Azofeifa) ( INBIO: INB0003364193, #64437, female), Estación Esquinas, Peninsula de Osa, 200m, LS301400,542200, June (J. Quesada) ( INBIO: CRI 001132028, female), Estacíon Quebrada Bonita, P.N. Carara, Potero Grande, Buenos Aires, Los Angeles, 700m, 09° 03' 30” N, 083° 06' 58” W, LS334500, 560500, February (M. Ramirez, J.F. Quesada, G. Mora, & M.A.Zumbado) ( INBIO: CRI 002502016, #45471, male; CRI 002502015, #45471, female), Estacíon Quebrada Bonita, R.B. Carara, Táracoles, 50m, 09° 46' 0 N, 084° 36' 0 W, LN469850, 194500, March–April (P. Campos) ( INBIO: CRI 000545040, female), April (R.A. Zuniga) ( INBIO: CRI 001024597, female), August (R.M. Guzmán) ( INBIO: CRI 002326724 = ADP 87588, #6176, male; CRI 002326725 = ADP 87588, #6176, female), November (J. C. Saborio) ( INBIO: CRI 001969744 = ADP 087572, #2470, female), Estación Sirena, P.N. Corcovado, Peninsula de Osa, 0–100m, 08° 28' 0 N, 083° 35' 0 W, LS 270500, 508300, February (G. Fonseca) ( INBIO: CRI 000126941, female), March (G. Fonseca) ( INBIO: CRI 002441354, female), March–April (G. Fuentes) ( INBIO: CRI 000772536, male), April (G. Rodriguez) ( INBIO: CRI 000496092, female; CRI 000496120, female), June (N. Obando) ( INBIO: CRI 000278302 = ADP 087592, female; CRI 000644482 = ADP 087592, female), June (J.C. Saborio) ( INBIO: CRI 000328904, female), Estacíon Tuva, R.V.S. Rio Pior, Golfito, 0–50m, 08° 24' 21” N, 083° 20' 31” W, LS262284, 535746, September (B. Gamboa) ( INBIO: INB0003881119, #78218, female); SAN JOSé, San José, 1160m, 09° 56' 0 N, 084° 05' 0 W, (M.V. Valerio) ( NMNH: ADP 003313, male; ADP 003314, female). PANAMA: Canal Zone, Barro Colorado Island, 9° 10’ N, 079° 50’ W, May, (P.J. Darlington, Jr.) ( MCZ: ADP 0003315, male; ADP 0003316, female), January (H. Dybas) ( FMNH: ADP 0007356, male), May (R.T. Allen) ( NMNH: ADP 0011069, male; ADP 0011070, male); PANAMA, Cerro Campana, 1000m, 08° 40’ N, 079° 56’ W, December (T.L. & L.J. Erwin) ( NMNH: ADP 0003308, female). NICARAGUA: none.

Geographic distribution. The geographical range of this species extends in Lower Middle America from Panamá to Nicaragua ( Bates 1882). The distribution of this species within Costa Rica is shown in Figure 8 .

Distribution of the species of Moriosomus Motschulsky in Costa Rica: Moriosomus sylvestris Motschulsky

(open circle,).

Figures

FIGURE 4. Moriosomus sylvestris Motschulsky, male, ADP 007358, habitus, ABL = 12.8 mm.

FIGURE 7. Moriosomus sylvestris Motschulsky, ADP 003301. Male genitalia, including phallus, endophallus, and parameres – (a) dorsal aspect, (b) ventral aspect, and (c) left lateral aspect.

FIGURE 8. Moriosomus seticollis Straneo. Ventral view of female reproductive tract. bc = bursa copulatrix; co = common oviduct; sp = spermatheca; sg = spermatheca appended gland; sgd = spermatheca gland duct diverticula; gc 1 = gonocoxite- 1; gc 2 = gonocoxite- 2.